welch r - americanradiohistory.com · b. prepare and file three copies of this form and all...

s

VINCENT D. WELCH EDWARD P. MOROAN ROBERT N. OREEN FoRBE5 W. BLAIR EDWARD J. STCOCMANN COWARD S.O'NCILL A. ROBERT CHCRIN PIERRE C. MAILLOUX JOHN H. MACKCS JAMES C. DAOOITT MARVIN S. ROMANOFF

WELCH c&c MO R GAN ATTORNEYS AT LAW

300 FARRAOUT BUILOINO GOO SEVENTEENTH STREET, N.W.

WASHINGTON, D. C.20006 ARCA CODO 202

296- 5151

December 12, 1966

Mr. Ben F. Waple, Secretary Federal Communications Commission Washington, D. C. 20554

Dear Mr. Waple:

Enclosed herewith, on behalf of Las Vegas Television, Inc. , are three (3) copies of an application for license to change existing station facilities in connection with File No. BPCT -3785. Also enclosed is a check in the amount of $30. 00 to cover filing fees.

Should any further information be desired in connection with this matt er, please communicate with this office.

c

Enclosures (4)

Very truly yours,

Robert N. 'Green

1

CALt AOOR[S .WASHLAW"

VINCENT B. WELCH EDWARD P. MORGAN EDWARD J. STEOEMANN A. ROBERT CHERIN PIERRE E. MAILLOUX JOHN H. MACKES GERALD S. ROURKE WALTER H. SWEENEY THOMAS M. P. CHRISTENSEN JOSEPH M. MORRISSEY RAYMOND J. SHELESKY

rr"`/1I.11

WELCH & MORGAN ATTORNEYS AT LAW

300 FARRAGUT BUILDING 900 SEVENTEENTH STREET, N.W.

WASHINGTON, D. C. 20006 AREA CODE 202

296-SIISI

REçEIVED

JUL I 1970

TV APPLICATIONS BRANCH (ENGINEFRINa)

Mr. Den F. Waple, Secretary Federal Communications Commission Washington, D.C. t0SS4

Dur Mr. Waple:

4-0+ r..,ReneT ei f..

CHARLES A. McNELIS Or COUNSEL

June l9, 1970

Re: Docket No. 17253

Transmitted herewith, on behalf of Hughes Tool Company, licensee of KLAa -TV, Channel 8, Las Vegas, Nevada, is a statement by the station's engineer concern ing its predicted Grade A and D contours as calculated pursuant to amended Rule 73.684.

Should any further information be desired in connection with this matter, please communicate with this office.

Enclosure

CABLE AOOAEeO WASHLAW"

Very truly yours,

Thomas M. P. Christensen

-,.- ì . v.;LiT: _J _.I

JUN ^ ;1970

4

CHANNEL F.IC ;Hi FOR SOUTHERN NEVADA

.1i101 't , l070

(sucraI (:ornnlliirations Commission I ')I'a NI tit roil, N. W.

I1. (7, ,'(iriri4

( ;eft I cn1it1:

EILAS TV HUGHES TOOL COMPAN'

P.O. BOX 1504

LAS VEGAS. NEVADA -8911 702 / 735 -751

RECEIVED

JUL 1 1970

TV APPLICATIONS BRANCH

(ENGINETIRING)

I I ';+,r1i\ ifÿ that after carcrf111 examination of the

prerlirtorl (,;rade nand B contours according to 73.684 as amended, that there is no change on any radial.

sincerely, .

(' (,t' ,v l''ú// William Haught Director of Engineering Hughes Tool C )mpany dha NLAS -TV

W II:jS

BROADCAST FACILITIES DIVISION

JUN 3 01970

FCC Form 302 Noverr.bar 1962

Section I

Form Approved Budget Bureau No. 62- P.01í.171 F:10 \o. L.

1G UniWd States of America CAcJT ic4:.-s post office address of applicant (Soo Instruction D)

Federal Communications Coamise%B° ,.. iir-r Las Vegas Television, Inc. APPLICATION FOR NEW BROADCAST STATION LICENSE Desert Inn Road

INSTRUCTIONS `Las Vegas, Nevada, 89109 A. This form is to be used in all cases when applying for a

:iroadcast Station License. It consists of this part, Section I, and the following sections:

Section

S o s t i on I I - B, license Application Engineering Data FM Broadcast

! O. BE SURE ALL NECESSARY INFORMATION IS FURNISHED AND ALL PARAGRAPHS ARE FULLY ANSWERED. IF ANY PORTIONS OF THE APPLICATION ARE NOT APPLICABLE. SPECIFICALLY SO STATE. DEFECTIVE OR INCOMPLETE

' APPLICATIONS MAY BE RETURNED WITHOUT CONSIDER- ATION.

FINANCIAL DATA

I I - A, License Application Engineering Data Standard Broadcast

Section II - C, License Application Engineering Data Television Broadcast

B. Prepare and file three copies of this form and all exhibits with Federal Communications Commission. Washington,D.C. 20554.. C. Number exhibits serially in the space provided in the body of the form and list each exhibit in the space provided on page 2 of this Section. Date each exhibit and each antenna pattern. D. The naine of the applicant must be stated exactly as it appears on the construction permit which is being covered. E. Information called for by this application which is already on file with the Commission need not be refiled in this ii- cation provided (1) the information is now on file in another application or FCC form filed by or on behalf of this applicant; (2) the information is identified fully by reference to the file number (if any), the FCC form number, and the filing date of the application or other form containing the information and the page or paragraph referred to, and (3) after making the reference, the applicant states; "No change since date of filing." Any such reference will be considered to incorporate into this application all information, confidential or otherwise, contained in the application or ocher form referred to. The incorporated application or other form will thereafter, in its entirety, be open to the public. F . This application shall be personally signed by the applicant, if the applicant is an Individual; by one of the partners, if the applicant is a partnership; by sti.officer, if the applicant is a corporation; byyt- member who iS -arí officer, if the applicant is an unid'ESporated as ?Onion; tiy...such duly elected or appointed offtejrtls as asompetent 1p.do so under the laws of the py¿leabl!'+l sQtcïion if the á^n'icant is an eligi- ble govern poi entity; or y licant'

r orney in case of

the applica t r'physica r of hisàl once from the United Stat ` The acto shall, in the ev?at he signs for the applica . cslparately s otth -rhe reaseQ,khy the application is no \ d by tl1JWlacant. In Q'tion, if any matter is scat r. the basis f e atto y s belief only (rather than hi t ledge), he all jately set forth his reasons for belie s/ aucpl GA are true.

'

:;oBeoa and communications with respect to this be addressed to the following -named persons at dicatod (1) above; (2) Welch &

300 Farragut Building, Wa D. C. 20006

application ate to the address in- Morgan, shington,

Faci:iùu. authorized by construction permit Froquoncy Channel No.1, Powor in l:ilowctts

"Lebtivis, aur. 180 -186 me 8

( 200 20 Hours of operation Call lettore

.¡Mon- Fri- 7:00a.m.- 1:00a. n. Sat. &Sun- 8:00a.m. -1:00ajm KLAS -TV 2. Construction permit covered by this application

File number Date

BPCT -3785 6/29/66 Construction begun

7/1/66 Construction completed

10/11/66 Is the station now in satisfactory operating condition and ready for regular operation? If not, explain

?11OGRAN1 DATA

3. Has applicant any contract, arrangement, or understanding, expressed or implied, with a network organization for the broadcasting of

't network programs?

Yes © NoEI

1 Yes U NoG

Does applicant, in the event this application is Yes granted, propose to broadcast network programs? If network programs are to be broadcast, state as Exhibit No. - - arrangements under which they are to be obtained and

attach copies of any contractual arrangement which may have boon ,1 made. If the arrangement is based on an oral undorstznding,

On; file.

101

written statomont of the arrangement should be submitted.

4. Give actual costa of making installation for which construction was author Transmitter proper

including tubes

s 66, 915.30

Antenna system, including antenna - ground system, coupling equipment, trans-

mission line

s --

_Frequency and modulation monitors

s 1,107.85

Studio technical equipment, microphones,

transcription equipment, etc.

s -- Acquiring land

s -- Acquiring or constructing buildings $2,488.00

Other items, ; state nature

$19,872.[72 rnnwar

Total

s 90, 383.87 incfa11a1;(In Air conditioning and installation 59026. 65: commercial

$6086. 15; miscellaneous supplies $648.21; Labor $4, 111.71.

1

{: í; Forre 3.

FINANCIA[. DATA (Continued)

=======milmilm. Tocclon I, f'n..,, :

S. (a) Atisch a detailed bali.r.co shoot, as at the completion date of the aut..orizod construction, showing applicant's financial position as Exhibit No. 1 (b) If the actual cost of construction materially exceeds the original estimated cost of con - sirucuon, tu.ch as Exhibit No. - - a detailed statement showing tho p:an used to fir.anco such construction. (1f applicant ( is licensee of a broadcast station having on file with the Commission an Annual Financial Report (FCC Form 324) showing its financial position within the past 12 months and the request in this application is for change in existing facilities, these

I exhibits need not be supplied provided that no substantial reduction in financial position has occurred.) 6. State changes, if any, in capitalization, and report any contracts affecting ownership not shown in the application for construction

permit. (If none, so state)

r'o ne

7. Apart from the raratus constructed, have all the terms, conditions, and obligations set forth in the abovo-doscribed application for construction permit been fully met? If 'No', state exceptions.

Yes E No 0

l 8. Is request for authority to conduct program tests part or this application? Yo Nol=3

THE APPLICANT hereby waives any claim to the use of any particular frequency or of the ether as against the regulatory power of the United States because of the previous use of the same, whether by license or otherwise, and requests an authorization in accordance with this application. (See Section 304 of the Communications Act of 1934).

THE APPLICANT represents that this application is not filed for the purpose of impeding, obstructing, or i delaying determination on any other application with which it may be in conflict.

THE APPLICANT acknowledges that all the statements made in this application and attached exhibits are considered material representations, and that all the exhibits are a material part hereof and are incorporated herein as if set out in full in the application.

CERTIFICATION I certify that the statements in this application are true, complete, and correct to the best of my knowledge

and belief, and are made in good faith.

N Signed and dated this....áthday of ...D.e.cembe.r , 19.6.íZ. pa I

EFFECTIVE JANUARY 1, 1964, INCLUDE FILING FEE WITH THIS APPLICATION.

SEE PART 1 OF FCC RULES FOR AMOUNT OF FEE.

WILLFUL FALSE STATEMENTS MADE ON THIS FORM

ARE PUNISHABLE BY FINE AND IMPRISONMENT. U. S. CODE, TITLE 18, SECTION 1001.

Las Vegas Television, Inc. (NAME.OF APPLICANT)

Title

(sIGNATURaj

a.(- J /'

EXHIBITS furnished as required by this form:

Exhibit No. i Section and Para. No. of Form

Name of officer or employee (1) by whom or (2) Official title under whose direction exhibit was prepared

(show which)

1 Sec. I, para. 5(a)

H. M. Greenspun (2) President

E Sec.II-C Robert E. Schenke (1) General Electric Broadcast Service Engineer

E-2 Sec.II -C para. 8(b)

Herschel C. McKenzie (1) Chief Engineer

,n.;cr.vt Apillca[ion FEDERAL C0`.(. CNICATIO` ;ON Sect:w l;-C Name of applicant ..iCENSE APPLICATION ENGINEERLNG DATA

TELEVf;1ON BROADCAST ( Las Vegas Television, Inc. i 1. Facilities authorized in construction permit Aurai tr..nsmitter

Call letters Channol No. File No. of construction permit :i. C. plate current in last Applied D. C. plate voltage of :ALAS -Ti 8 BPCT -3785 -adif. stage, inamperes last radio su.go, in volts

Frequency I Carrier froçuo:.cy - . 3 /..ufo in ut power to last Visual 18i 24 , ? In

4 180 186 Mcs

.lo atago in kilowatts Aural. 185._74 k., 8.450

..Tocuve Radiated Power ¡Effective Radiated Power i

';visual) (aural)

dl,.t: 23.01 ,. ,ibk: 13.01

Antenna height above average

terr f Ù 137 foci lnkw: 2OÚ (I.Ikw: 20. J

2. Station location (principal community) State City or town

Nevada I Las Vegas ¡ a. Transmitter location

State Nevada

County Clark

6500 . Efficiency factor F of trans- : n..t:cr :.t o?Mating .owor, In percent 41, 5°,0

Transmitter power output :n dbk: 5.414

3.5

RF transmission lino muter reading

100 i. Antenna and transmission lino

'antenna make and Typo No.

:eneral Electric TY28-F i /" Antenna supporting structure

Number of secuons i Powur pin in db

6 I 7.99

Ideco self- supporting City or town Hwy 91, :rnot Address (or other idslufiatioa,

ì mi. so. of as ¿50 East Desery Vegas City Limit' Inn Road :lverall height of antenna system above ground t. Main studio location a :era 241 ft. ).

State l

County / Geographical coordinates of antenna (to nearest second) `

p Nevada I Clark North latitude West longitude

'Street address 36° 07' 49" / 115 °09' 52" (250 East Desert / a

Inn Road If directional antenna is used, give full details including horizontal und vertical plane radiation patterns, as Exhibit No. - -

City or town Hwy 1

1 mi. so. of Las .Vegas City Limits

5. Transmitters Installed Visual

Make

General Electric Aural

Make Make

!General Electric

Type No. Rated power

In dbk: 15.44 TT51-Bl In kw: 35

. Is electrical or mechanical beam tilting employed? sq, describe fully in Exhibit No. - -

including horizontal and pertinent vertical radiation patterns. Slias antenna been altered to provide null fill -in? If so, describe fully in Exhibit No. - -

Yes No

Trcns:nission line

Yes DNo®

Coaxial or

Coaxial Powor loss in db for this length

.39 -.

Type No. Rated power

TT-32- In dbk: 7.4 B In kw: 5.5

Make

V Andrew

Operating constants Visual transmitter (while transmitting black)

11D. C. plate current :n last radio stage, in amperes 7.8

Applied D. C. plate voltage of last radio stage, in volts 6250

,Transmitter powor output (after 'Multiplexer loss ' vestigial sidoband filter, if used, lin db, if separate: and after multiplexor, if oombined)IIncluded i

PIndbk: 15.4 ransmitte ¡In kw: 34.8

Antenna input power in dbk:

Transmission ins power

.OAS in db:

0.39db 15.02

Antenna power gain in db:

7.99

'Input to transmission line in

dbk:

Type No.

562A Size (nominal inside transverse dimensions) in inches

3. 027 Multiplexer

Length in foot

257

Make

General Electric rIf emergency antenna or transmission line measures are provided, 1 describe in Exhibit No. - -

J

!Typo No.

IPY-16-C

'' 7. Modulation monitors 15.41 Effective rudi

!power

(a) Visual monitor or monitoring onuipmont Make RZ;A, ConraC,Type No. (or describe in Exhibit

Indbk: 23.0- General Electric No. E ) Page 2 In kw: 200 k\

Attach as Exhibit No. complete information concerning the method of power output determination. I[ power is measured at output of 'General Radio multiplexer, so state.

(b) Aural monitor Make Type No.

1183 -T2 Reading of power output meter (transmission line voltage, current 8. Frequency monitors or power; indicate which) while operatin¡y at authorized power: (a) Visual monitor

100 units Make

General Radio Type No.

1183 -T2

Normal limits of deviation of carrier frpglfepcy shown by monitor L U U high high

cps- low to + 0 cps, low

- Broadcast Application TEL::Viz :ON BROADCAST ENG:SEE : ::.'G DATA fiction 11-C, Pa, 2

S. (Continued)

(12) Aural monitor Mako

- -neral Radio ..ype No.

i83 -T2

Normal limits of deviation of carrier .

frequency shown by i,(or T2Óo high t ti UU high.

cps. to cps. low low

If either frequency monitor indicates any currier deviation in excess of tao porrnissiLle toioranco, describe in Exhibit No. - - and state the conectivo measures taken.

:f the carrier frer uoncios have been n.oasurod by other means, doscribo in Exhibit No. r. -2 , giving the dato, method usod

M or froquoncy measuring sorvico employod, the results obtained .id tho mnr..a,r rr.ui.. (hi °t.. or low) i.i the time.

0. Performance data Visual transmitter a. Attach. as Exhibit No. E data showing the following:

1. Overall attenuation versus frequoncy of the visual transmitter;

2. Fiold strength or voltage of the lower side -band for a modulating froquoncy of 1.25 mc. or groator, and of the uppor side-band for a modulating frequency of 4.75 sac. or groator;

3. A description of the equipment and technique used in making these measurements.

b. Atturli as Exhibit No. E di.ta demonstrating that the wave'ur.. of the transmitted signal conforms to that spocifiod Ly rho standards. Lfitil tho form of these measuromonts may be spociffod Lv the Commission, the character of this data is left to the discrouon u. tho applicant.

c. Attach as Exhibit No. E photograph of a test pattern taken from receiver or monitor connected to the transmitter output.

11. In what respect, if an Y. does the apparatus the permit?

Porfur:r:unco data . Aural transmitter

.. :t.ch as Exhibit No. E data, diagrams, and appra,,riato graphs to ,zethe: with description of moasurer..ont procedures and instruments with regard to the foliowing: (All moasuroraents shall .

to r.3do war. tho equipment adjusted for normal program operation and shall include all circuits between tae main studio microphone terminals and the antor.na output, including telephone lires, pro- . -.p:.asis circuits and any equalizers omployod oxcept fir micro- ...,,con, and without compression if comprossion amplifier is installed.) -

a. Audio frequency response from 50 to 15,000 cycles for approximately 25, 50 and lot) porcont modulation. Measuremonts ..hall be made on at least the following audio froquoncios: 50,

:00, 10(5, i3:ro, 10,000 und 15,060 cycles. The froquoncy response measuromonts should normally bo mado without doomphasis; t.owover, standard 75 microsocond doomphasis may be or ployod it tho measuring equipment or system providod the ac- curacy of the doomphasis circuit is sufficient to insure that tho measurod response is within tho proscribed limits. b. Audio froquoncy harmonic distortion for 25, 50 and 100 portent modulation for the fundun.ontal ir.i,uuncies of 50, 100, 400, 1000 and 5000 cyclos. Audio :rotiuency harmonics for 100 porcont modulation for fundamental froquoncios of 10,000 and 15,000 cyclos. 1lonsuromonts shall normally inelado harmonics to 30,600 cycles. Tho distortion measurements shall be made om- ploying 75 microsecond doemphasis in the moasuring c .yimont or system.

c. Output noise lovol (froquency modulation) in tho band of 50 to 000 cyclos in decibels below the audio frequency level repro -

.,inting a frequoncy swing of 25 kilocycles. Tho noise moasuro- :.ants shall be made employing 75 microsocond deempiiasis in the measuring equipment or system. d. Output noise level (amplitude modulation) in the band of 50 to 15,000 cycles in decibels below the level representing 100 percent amplitude modulation. The noise measurements shall be made employing 75 microsecond deemphasis in the measuring equipment or system.

constructed differ from that described in the application for construction permit or in

Does not differ from that described in the application for construction permit.

I certify that I am the Tochnicol Director, Chief Engineer or Consulting Engineer for the applicant of the radio station for which this application is submitted and that I have examined the foregoing statement of technical information and that it is true to the best of my knowledge and belief. (This signature may be omitted provided the engineer's original signed report of the data from which the f information contained herein has been obtained is attached hereto.)

Date December 2, 1966 / ; /./°D 4(i ,'. ,OF2ö%ñwbVOWoìroir; C hie / Engintcr7ba`fOro'sólTii3jr--iDVnWilL"

e U. S. GOVERNMENT PRINTING OFFICE: 1963 0 - 699-406

i

i

1 -`.. ..y... ...i. --

Cash: Petty ì.a. h De:.rd Deposit. in Bank

Accounts receivable: :eguîar Trade Due from Employees

C Rec. Las Vegas Sun " Claims

Less Reserve f. Bad Debts Accrued Interest Receivable Film Inventory

Total Current Assets:

57.03 2,279,82

139, 767. 82 642.4S

8,296.00 ( Q. . ' ))

:.48,018.25 :55,964.71)

Fixed Assets Equipment & Leasehold Improvements Less:Reserve f. Depreciation &

Amortization

Total Fixed Assets:

Deferred Assets Investment Tax Credit Cash Surrender Value of Insurance

on Lives of Officers Prepaid Life Insurance Premium Prepaid Insurance Prepaid Interest

Total Deferred Assets:

Other Assets Refundable Deposits Investment - Alta Corp. Intangible Assets Organization Costs Note Receivable - Alta Corp.

Total Other Assets:

TOTAL ASSETS:

CI J. ...J. _ ....

2,336.90

92,053.49 5,200.00

228 462.41

1,002,225.52 651,524.75) ;fiflxRflàx RSc

1,103.65

42, 920.89 1,325.78 21,505.36 24,865.99

202.00 9,629.53 4,994.47

10,559.83 80,000.00

328,052.88

6:';,s;r1$Ix5?6

350,700.77

91, 721.67

105,185.83

875,861.15 ##iéßí'*ií3rìb#ié

__.,%_ï(.,1 .... -- .:.. - `7 :. :._ 'T:..: 30, îc'-6 L. ' -J.. J :..,. . ,.i' . '.^.^.

_i, :,1 _. l 1 i es Notes- Accounts .P7yc.b.e:

A/C Payable able - '_race 43, 767.39 A/C Payable - L.V.Sun 131, 765.59 ., O i S ^ : .G: ` r:= .c1s Payable-

Due : itìlin One Year 1,56, 227.10 r iî,r Costs Payable - Due

Within One Year 111, 219.56 Due to Officer -

I-:.M.`rec:;sPu:: (16.009,00) 43=,970.64 Accrued. Payroll 9,897.16 Payroll Taxes -Accrued and

.-Ii thhe1c 3,440.66 Accrued Property Tax (5,445.84) Accrued Interest Payable 6,865.64 Accrued Music Fees 19,235.01

Total Current Liabilities: 465,963.29

Fixed Liabilities Notes & :cntr .ets Payable -

Due After One Year Film Costs Payable -Due After

One Year

Total Fixed Liabilities: Deferred Investment Credit Income:

292,102.45

66, 03 5.17

358,137.62 27,674.12.

TOTAL LIABILITIES: 851,775.10

NET WORTH

Capital Stock Issued, 2200 Shares, Par Value $100 Per Share 220,000.00 Less: Treasury Stock at Cost(330,156.25) (110,156.25)

Earned Surplus: Balance, January 1, 1965 and 1964, Respectively 40,721.40

Net Profit for Period, Add: 93.520.90 134.242.30

TOTAL NET ',J RTH:

TOTAL LIABILITIES A::D NET WORTH:

24.086.05

875, 861.15 *** -A;:wx**ic

EXHIBIT En

ENGINEERING REPORT

of measurements made in support of

Proof of Performance

at

KLAS -TV

Channel 8

Las Vegas, Nevada

This report prepared by:

Broadcast Service Engineering General Electric Company, Electronics Park Syracuse, New York

TABLE OF CONTENTS

Section Description Page

a Introduction and Affidavit 1

Overall Transmission System Diagram 2

1 Power Measurements 3

2 Frequency Measurements 4

3 Overall Amplitude Versus Frequency Response- Visual Transmitter 5

Tabulation of Overall Amplitude vs. Frequency Response 6

Graph, Overall Attenuation vs. Frequency 7

Lt Linearity Check -Differential Gain 8

Differential Phase 9

5 Photographs of Horizontal and Vertical Sync Intervals 10

6 Test Pattern 11

7 Diode Demonulator Response 12

Graph Diode Response 13?

8 Audio Frequency Response -Aural Transmitter lL

Audio Frequency Response 14

Audio Frequency Response 25% Mod. 15



9 Audio Harmonic Distortion Measurements 18

Graph, Audio Distortion Measurements 19

10 Aural FM Noise Measurement 20

11 Aural AM Noise Measurements 20

13 Spurious & RF Harmonic Measurements 21

Ir :troduction and Affidavit

This engineering report was prepared in support of a proof of performance of a

General Electric type TT -46 transmitter in the television service operated by

licensee of station KLAS -TV operating on assigned frequencies of 181.25 and

185.75 MHZ. The transmitter is located at 250 East Desert Inn Road, Las Vegas,

Nevada

Measurements were made by or under the direct supervision of R. E. Schenke

a General Electric Broadcast Service Engineer who has sworn the following affidavit.

State of: NPv da )

Affidavit

SS.

County of: Clark )

Robert E. Schenke being duly sworn upon oath, deposes and states that:

The General Electric Company was retained by S-TV

to prepare this engineering statement. of Las Vegas, Nevada

The engineering data was obtained by him or under his supervision and direction.

That all facts stated herein are true of his own knowledge, except for such facts as are stated to be on information and belief and as such facts he believes them to be true.

Broadcast Service Engineering

Subscribed and sworn to before me on this day of NnvPmber 1st, 1 SEE

My commission expires 10 -1 -70 Notary Public

t . 1 URSULA NDL "tR

NOTARY rUr3LIC - STATE OF NEVADA \ \ ¡ COUNTY OF CLARK ,i My Commision October 1, 1970 1

Studio Video Equipment

Color and Low Pass Filters

General Electric BC -11 -A Audio Console

General Electric TT -46 -A Visual TT -32 -B Aural Transmitter

Harmonic Filter

Conrac C Picture Monitor

PY-33-B V.S.B.

Harmonic Filter

G.E. TY -F

Diplexer `-, ,

To D. L.

RCA TM6 -C Waveform Monitor

G. E.

TV-21-C Demod.

Gen. Radio 1170 BT2 Freq. and Modulation Monitor Gen. Radio 1176AT Vis.

Freq. Mon.

Overall Transmission System

19191-H D.L.

Measurements made at KLAS -TV Date 10/27/66

2

1. Power Measurements

A. Visual Transmitter

General Electric transmitter type TT -46 -A operated into dummy load

typeRCA MI- 19191H serial # 1046 with standard black picture

with 25% sync out of transmitter.

Average Power 20.7

Peak power output + 20.7

KW measured in the dummy load.

x 1.68 - X4.8 KW

a 15.41 dbk

Peak output power indicating meter set to read at 100

power level.

PA DC Plate voltage and plate current at this power level are:

Ib 7.8 amps

Ebb - 6250 volts

Test set up is as shown below:

G.E. TRANSMITTER TYPE TT-46

COMPOSITE SIGNAL

Hrarn. Fil. PY -30 -B vSBX -55 -B

-_______4 HARMONIC FILTER

Diplexer PY -16 -F

r INPUT TERMINAL- EQUIPMENT

i"

VIDEO GENERATOR

TYPE HP 650 -A

SERIAL # PP 215

A

S'l'EP

GENERATOR TYPE Telechrome 1003

SERIAL#

FOR COLOR MEASUREMENTS

IF MADE

PAD DB

PAD DB

units for this

DUMMY LOAD TYPE MI- 19191 -H SERIAL # 1û4E

HV LINEAR

DETECTOR

}!

FOR COLOR MEASUREMENTS

LN&A1T1 MEASURING

UNIT TYPE RCA BW -7 -A SERIAL #550992

Test Set -up for Measuring Video Transmitter Characteristics Fig. 1


-3-

o

a

D

B. Transmission Line

Make Andrew Type 562A Size 3 -1/8" Length 257 '

Line loss .39 db

Diplexer power loss Negligible db

Total losses .39 db

Antenna input power 15.02 db

Antenna gain 7.99 db

Effective radiated power 23.01 dbk

200 KW

C. Aural Transmitter

DC plate voltage, final stage Ebb =

DC plate current, final stage Ib

Input power to final stage EbIb =

Output power as measured in the dummy load

Efficiency factor

6500

1.3

8450

3.5

5.414

41.5%

volts

amps:

watts

KW'

dbk

Output power indicating meter reading set to read at 100 units for

this power level.

Frequency Measurements None made.

Frequency measurements of both the aural and visual transmitter were made

on Date: by

At the time of measurements, aural and visual crystals were adjusted for operation

on the exact authorized frequencies. Frequency measurements reports are attached

at end of this report.

General Radio type - 1183 -T2 frequency monitor serial

# 1020 is used to monitor the operating frequency of visual carrier.

General Radio type 1183 -T2 frequency monitor serial

# 630 is used to monitor the operating frequency of the aural carrier.

o

o

o

3. Overall amplitude versus frequency response -visual transmitter

A. Test Equipment - The equipment was set up as shown and identified in

Figure #1.

B. Test Procedure

The visual transmitter was adjusted for CW operation at midcharacteristic

(43% of sync peak level.) It was then modulated by a signal from a type

H.P. 65aa Serial # PP215 Generator. The modulation was set

so that the excursions were approximately 70% (max.) of the reference

white to reference black region. A selective receiver

model BW7A serial # 550992

RCA

was used to select and

measure the signal level of each of the sidebands of the modulating frequency.

500 KHZ upper sideband was chosen as reference level since it

was the lowest modulating frequency that could be accurately separated from

the carrier. Measurements were made at the modulation frequencies

tabulated on page 6, and results plotted on the graph on page 7.

Measurements made at KLAAS -TV Date 10/27/66

Tabulation of Overall Amplitude vs. Freouency Response

0 Modulation Frequency

MHZ Relative Volts

.500 10 x 100

.750 9.8 x l00

1.000 9.8 x loo

1.250 9.2 x 100

1.500 9.0 x 100

i'750 8.5 x 100 2.000 8,5 x 100

2.100 8.5 x 100

2.250 8.5 x 100

2.500 8,8 x 100

2.75o 8.6 x l00

3.000 8.5 x loo

Q3.500 8.2 x 100

3.580 8.2 x loo

3.750 8.o x loo

4.000 8 , O

4.18o 7.6 x loo

4.25o 6.o x 100

4.50o 4.0 x loo

4.750 7.2 x 10

5.000 3.0 x 1

5.500 2.0

6.000 Noise

6.500 Noise

7.000 Noise

7.500 Noise

8;ctO Noise

Upper Sideband Lower Sideband

db Relative Volts

db

0 8.5 x 100

-,.02 1 6.5 x 100

-.02 3.3 x l00

4.0 x 10

5.2 x 10

2.0 x 10

1.4 x 10

-1.4

-3.7

-9.6

-28.o

-25.6

-34

-37

2.4 x :LO

3.0 x lo

-1.3

-1.4 1.5 x 10

1..1 x 10

-1.8 6.5 x 1

-1.8 5.8 x 1

-1.9 7.0

-32.4

-30.4

- 6.4

-39.2

-43.8

-44.8

-4

-2.4 -4.4

-8.0

4.5 x 1 -47

2.0x 1

-22.8 .-54

-52.6

-54.0

o

Measurements Made

At KI.As -TV

Date 10/27/66

-6--

o VISUAL TRANS MïTizzi UPPER & LOWER SZDEBA2VD RESPONSE

-4 -2 -1 0 1 2 3 4 6 - I umNsm®Mr= mmNmmmN Nmu

CARRZER Noumm uummWUM 11111=M 111=1 Nmmsmu tmNNNm = NN mNNIuu NIm m uuN NOtNNWWNNNmNN /10 sNSWÿtv NNmYWNWNNNUNN Nu M== mmNImNt uN u Nmmmu N EEE NmWNu NENN..NN uNNNgNWNNWÓttW WNR m smumN muusmmsEmt iiiiii ui uiiü%mi mmEumtt NEU tm W Mj w:üri iuuu m rv Nmmmu um Numum 1111 N MTiig-.. .\ tt t;JtNNN uEsu E t 1NINtmsu mNm m E EENmusmm uNWSNNm ñp%tÿM Np ̀ t.ttm N sEU MmN EmIilNNN -10 msumNININIm mt N N -10 muumuN1,Em Emu1 usEUum,`uuuNENi iNu Y ..Ñú1 WMÜt E mumuu UNN NuuEu1 m utmm1mEU uEEIuNE mmiEE r.u=g n.I'1EuEE -20 uuEmN,NW 1uumsEEI ,1A -20 mimmu.EEEEtEE1uu.NU taarIuMnr1 EUu'N1NN N.11 EuuEEE'uNI tM NIMM=U Rt, EUumu1 e9NI m NEu 1111 .N 1111111111 '7, tmNUtutE ItNut EI[NNNItt 115.111 ttu uISEE 111.u u7CNmCE. Es.ssE.E 3Q mmm11EmEm=muuuE 30 mE!11uu Em mum m1.1Uuummmmm turut:1111ttEu Emut uu 1l ;Iu E tE ....NE41,mmumE1u. ..s 11trIEEmmNmEEEEuNtuE1NC tEtgIumm . muNmilE umE Et ,.NmgEmt..I.m.C..... tu.. IEm ... Nt ...mE Iu -40 EE[>EumNECNtI.tE

_110 u.m tIu m m uu . Eu .Et...N; ;i:ii::.Y=..-- liE EI.id1u uNEm E Eum COLOR SUBC A

. '=' tuEu mum u 1u LIMIT : E mumsu u mN11i,iEE .. ...u.u uEusuL1tu E1:uutu. Efmum m t -50 Wm/mmmm N N.mmNmu u1mumuE mm m umum 50 /IEmsuuCmm..mt u11mum NN m.tmmCa7 sEuE :::::::::C::':::::::.:::=.:C:::=::CS::C:::::ü:d: ENImEmmmumENIuENI mEummm m mutuNI tCmmuNE uuusmmmmiutummNEUuEEu ...E...WÜÖÖVmuvüqENmuWEWÜ -b0 W mmuEmutumummEEmmEm mtmEuEEEtEU tNUmNEuuuttt uEENu EEE tEuummNUEumumumNmCNmt EtmNum.ummmsmm tEu.usuuEtN.suEtEU NmE muu smmmmEEEUummummmNNN 70 EEEummNmE EEmummEm ..msCEmsuENIEuum ....uuuEuEE tEtE m um utEEEu .WmmmEEtE.E mNNmmmuE mEmmmmENuusEt tuutEuuuu MuEumtumNuuEusE tmustmmENtusN

- - - 1 2 3 5 7 8 MBZ ABOVE AND BELOW VISUAL CARRIER

db 0

/10

'7

o Linearity Check -Differential Gain -Differential Phase

A. 'Output linearity of the transmitter was checked by modulating it with a

composite signal consisting of a stair step signal with 20% peak -to peak

3.58 MHZ superimposed on the steps (minimum of eight steps). This test

signal supplied by a Telechrcme type 1003C serial

stair step generator at rated sync and rated output power. The depth of

modulation was set to l22% of sync peak as observed on a vestigial sideband

demodulator. A photograph of this measurement as viewed on an oscilloscope

with a high pass filter inserted in the system is shown below. The test

equipment is as shown on Page 3. Readings of the relative gain of the system

are tabulated together with the phase measurements ,Page .:9: (Differential gain

and phase were measured using a high voltage linear diode).

Measurements made at KLAS -TV

o Date- 1/27/66

-8-

o

o

B. The differnetial phase was measured by employing a stair step signal as

in A. The phase and gain readings were recorded in degrees as shown in

the following table:

Step No. Phase Angle Relative Gain Burst

1 (Batik Porch) u 9.5

2 +0.5 9.0

3 +1.0 9.0

L: 41.0 9.2

5 +2.0 9.8

6 +'2.5 10

7 +3.0 9.6

8 +4+.0 9.1

9 +5.0 9.0

10 (White level) .6.0 8.6

bifferential gain = Min. Gain a d.6 Max. Gain 10

- 86%

Measurements made at KLÁS -T V Date 10/27/66

-9-

5

Q

Photographs. of Horizontal and Vertical Sync Intervals.

Photographs of horizontal and vertical sync intervals are shown below:

Horizontal Sync Interval

Vertical Sync Interval

Measurements made at KLAS -2`'V Date 10/27/66

o 6. Test Pattern

l'icturo of station test pattern through the system and detected by thv Demodulator type TV -21 -B


V

7. Diode Demodulator Response

Diode demodulator amplitude vs. frequency response was determined using

the test set up shown in Figure 2, Page 18 with the exception that the

diode demodulator output was connected to a 5240 scopec:and the output;,

read by scaling from the scope. A graph of the response is attached'on

page 13.

Tabulation of Diode Demodulator Response

Modulating Frequency Relative Voltage db

MHZ

0.20 10 0

0.50 9.8 -0.2

0.75 8.o -2.0

1.25 4.5 -7.0 1.5 44.8 -6.4

5.o -6.o 2.0

0 5.0 .-6 . 0

. 5.o -.o

2.50 ,.o -6.0

5:. 5 ''' -5.7 .

2.75 5.o -6.0 3.00 5.2 ' -.57

3.58 5.2 -5.7

3 5.n -6.o

Lt . ÓÓ 4.8 -6,4 4.5 -7.0

1.18 4.5 -7.o

4.75 Unreadable

Measurements made at Aß -TV Date 10/27/66

db

0

-2

-4

-6

-8

- 10

- 12

- 14

-16

- 18

-20

-22

-24

-26 .50 1.00 1.50 2.00 2.50 3.00

VIDEO MODULATING FREQUENCY (MHZ)

o

o o 1 00 1 o

o

:::CMCCMCCCMMCMCCCCMCCCCCMMMCCCCMCMMMMCCC:CCCMCCi:M:MiCCCMMC::MMCCMMMMCC:CMMMCMM:CMCCCCCCCM:CMCCCCCM ..........M.E..nnMnuEn.n.M.M.IEuo..nn.nI. n..nnu u.M.tCn. M nIC.nC.... .nu..nno.nt.u...M.tuE...nC.ti..tl.nnt.Cutn.uC.CM. ...., tt .n.nn.n..u t.noEnItn nnuton .o. r.ì.`: :01nEnnIM .In.n .. MMMMCCMCCCMM:C:iMCM:CMMMCCMMMMMMMMMCMCM DIODE DEMODULATOR CiMC C ..CL\.nntuntnon RESPONSE MMCMMMMMCCCMCCCCMMMn.MMCCCCCCMMCCMC nt... nIEunEon .MooIIEHuMuMMHMM i . Eut` nHM/ntnnu.tnt.n It. n .nC......... .......n.nnEnntn..IMnn.MItnIM t.MCIEMi. ECi M .......C\`/.Ctunnno.MIEInCnntC . E tEIut.M .n. EnEM..nI n . . .....t............Ht...EH.n.n.EInnnn...IOI.99M M.i.iE... 91 CCEn1//n u . nm nIu noItont un . I...nt.oM..Mnoou..p.._..t.EEnIn..nuEnn..M.,Nn.. ntMCI.CCQ.9: Q9 9EC9. MMMCCMCCMCMCQMCCMMiiQGiGìiMMCCCMCMCi:MMMM :::,CC ¡¡M.I¡ . i CMC ¡¡ i C ILL m iC= M uE 9M m t nm t.. r .!:i.t.tt. mi.tt. . N n Jill

CCCMMCCQC::MCCCCMCMCCCC-Q'."`.:::C:: :C:C:C::CQ::::C::CCCQC:C ' mi _= S99 9 Y M MCn í m .tmCu.CCuntlnt .... .... uIn...ttnt. . ... . ..IEE.nIOnn.MCnEEE.EUnCMnnMuuiI M 9C Q ' u u nH ntMCE ...ni nCMnC.ICC M.a CEMCíC .. Mmom .M.ann , .L . 0110111111111111181111 uEnEM n nnu IDEALIZED RESPONSE iM iCuuu.../ Z DIODE P,F.S_ ONSr, Q.MMMMQCMMQ Q CCC9

E E tI E . m o uut. u EEQ C Ei CCn n iCn.iCCMiHMCCCunCuCi.iCnCMEI iE . C i .. .C. . .Q . ..CQ M. ..CQC. .... ...n n . . ........ .. ... .. E IMtCCtC9ECCC.MC .C6H..MtiC.C.sCCCEC.IInoC un C n .. . u .Iuu u u ui. i umtun nI nu uE m u u n - ..nCCCC .nCE.Q noiMCCCñiMCnE . CQICCuMnM C Ci

.. . . . nEnn n.nC .. .. . ., . .Q nQ..Q = MCMMMMMM9CCMMMMMMMEC MMMQìuiiMiiMCCi° ° C .n. n . C.H9ii......i.Hú.CC.

M C. I. C.n....u.....CMInua..QiMYMi .MH. i. CCCC I :

9 C..C OEM =..._..CinCEC nnnn

MCM

.,CC mom i C . nn n n n mont n u non 'i Q CQ C

EnCC CnEQEM9 9nC o Enn tnC CC EMME___ oC 9 MCMC EnE EU nIno I E tI Cnlnn Ituu Cn au.nIICI mtn.i.CCinCCiCCn C

M iC i ..ME iu n u nnlu . I u .. iiiiiiiiQ9no CCMME iCi9CCii9iiiiiiii?iwiiiiiiiCY9CiiiiiCiiiQiö9iiCi 9 9 Ci Q9Q Q moms .................. tM uuo uoEOnECuunnoMn .E MIME .i 9 .....I.......... . n..EM... H...n.n... MMMMC/MMMCCMMCYM. C Q

t.uoInn.tn QCCCCCo.CCitCCCnin. C..CC. .. MCCMMCMMCMMMMEnC E Mn M .H t I t . 9 MnIEIIMEM M EEC nn nIEmn.nn19nnni9u M Mi C EuHEMnt m I...t9MM.E. oM9M9 E C MuC .HCC M MMMMCCMMM

mIE In I m E ir ...n inC.t.0 moon C 9 MC

Y.CE.CE..nnMCunCC..CM.H M.. M

MounQ EM ICuCm M9 C C t CM

Mi C mCtC CotiuICCC ttC

C i CCCMM9 oI u MEWS u EMS u t nE t EUttlnn .Emn .u ...EEiunnni CICiCIIC. .InCMI..tn.iECCn CE.CC CCM C

9 . ........................ u Cn.C.CI I C ..... C.......C.C..... . 9iCEns CCn......I...Cn..M.n nCC. . tMM.n ..n . .. n nos I.u.mnn ttE. I CIi nI 9 i I n ntoInnI nInu MMMuQQiMQ=C9M9MMCC9CMi6CMMCCMQ9C9MCM=CMMCCMMCMMMMMMMU.nIEEnnM..C.CQEM MCQ M.0 C9.IQ...Mi Q

1111.11111111111111111111111111111111111111111111111111111114 . . . MC MMM MMCMMMCMC M CMM C.MMMMCCMMM :Q:CMCCnCMCCMMCCCCMMCMMCMMMMMCCt C9M9 M99M

3.50 4.00 4.50 5

13

O

2

4

6

8

10

12

14

16

18

20

22

24

26

o

o

.8. Audio Frequency Response -Aural Transmitter

Test set up for measuring the overall audio frequency response is shown

in Figure 2, Page 18. The aural transmitter was modulated while operating

at rated power, to 25 %, 50 %, 100% modulation as indicated by the station

modulation monitor. A modulating tone was supplied by an audio oscillator

HP 'type 206 serial # 766 at the frequencies tabulated

below, with'.the modulation percentage held constant at 1O00 cycles

was used as a reference level and the increases or decreases in level

required to maintain the percentage modulation constant was converted to db

and tabulated. The signal was introduced at the main studio microphone

terminal and passed through the audio system to the aural transmitter.

,Limiter actions in the limiting amplifiers were disabled Tor.these tests.

Curves of these results are shown on Pages 15, 16, and 17.

Audio Frequency Response

. Frequency Mod. 50% Mod. 100% Mod.

50

100

400

.6 -2.7 2.3

-1.9 -2.2 -1.9

-0.5 -1..3 -0.9

1000 0 0 0

2500

5000 +7.4 +7.4 +7.5

7500 +10.5 +10.5 +10.3

10000 +12.2 +12.0 +12.4

15000 ' +15.0 +14.8 +15.0


-14-

16

14

12

10

8

6

4

2

a

sUEEÌ .111 1 PUEEE"IIU%ÌE 'IpggpÌlUE'IE'Up'E 1 :;I 1 1 :, 1

11111EE ii.II::Ohi..IuuIIIO E 1 11E1EE11Ii11EI : .11IEIIEEU E IIIC 11 EE .. .11111 II I I

1 .11 11111,IIIECEEE11111CCEE / n i .111I1T1 1111TI1u1 11 . 111II1 11111u 1 1 .I/ I 1II11 1111 1 1 E E EEUI11 11 / .11I111I .11E11111 1111 i i IIII1111E11111 .11 E.111111T 11111 1 I11I , E

CE 11 I 1 11 E

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. ON

.1 1 . I% 11.II E 'I n':EaU'. IE

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_ i i _ -I -1- _ i

AUDIO RESPONSE CURVE

25 % MODULATION - SOLID LINE- FREQUENCY - RESPONSE LIMITS

PRE- EMPHASIS CURVE - -: TIME CONSTANT 75

MICROSECONDS DOTTED LINE - RESPONSE

- CURVE AS MEASURED

100 1000 CYCLES PER SECOND

10,000 N

1

I 1

I

1

I

16

14

12

co

°10

Z g

a Ci)

cc 6

} 4 W

°C 2

0 o

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100 1000 CYCLES PER SECOND

111Firf N

Filar km II NB Nil

o I 1

4

, 7,14 AUDIO RESPONSE

CURVE 11% MODULATION

SOLID LINE - FREQUENCY RESPONSE LIMITS PRE - EMPHASIS CURVE - TIME CONSTANT 75 MICROSECONDS DOTTED LINE-RESPONSE CURVE AS MEASURED

- N,

S.= FI

10,000 it

_1

1

1

1

1

áI 11

i

16

14

12

8

6

4

2

- .I 111 .q I IU 11111Gl1111 111tpgggpIIIIIGqllllippqp 11 IIG7 11

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pm iiiCI1i11 ::iCCIII iiil ll il ICiiiTIIIII=:1'ú`IIilI11C::C:iililli==111II

I I i I

ull l1 I 1I= 1 C 11IIÚI .111111 11 II 1111 Illll . 11111 I1 1 1 11 IIn1I I 1 ..lIIII 1 .!l111 I 111111111111111111111111111 III 1111.1II1 n1! 1111 I VII, /1111 II.11111II1. I11I11i1111111.IIIIITIIIIII..I11111111.III11 II -C II1111 II III 111..1111 II 1111..l111111l1 1 N 1111 !II 111

1CCiiiiliiiCiiiiiliiIIIÌIIIIIIIIIÌIÌIIIIIIInÌÌI11. II ..1 a111 11T11111111.I111llliiili . 111111! 111 1.. 1 II n.1I11111 Ill! . III 1 1111111Illp1 I - ill - -- 1111Illnli111T1 d I 111 dppllnl.1i1111i11I 11111.1111 1.... 111 .. I 111 1 1I 111 C. ! 911 1R11 l111111 11 iIl 1111I1 !1 1 I IIIiI . 1111 I 1111i I 1 IC 1.II1 1110I1111I1 II

E 1 II _ n!l11111111Illlll.ICI C1111111C.IIIII IIIIII 11 111 1 p 11 111l .. 1 - _ MU TH 1l I 11 1 n l/1111 .I11111 IIl1I 11.0.1 i 1

di 1 nIllll II. IIII1111 i ..IIIhII

111pp1 IiI1iIIi1IIICIIÌ IIIT I II 1 11 ! illiiiCI 1 !1i11 N.I IIIII , 1lli 11Iil 11Ú1111fInuiiiiliiiiilliiilii IIi 1114 nullli .liuw1111u11111 AUDIO RESPONSE n1 1 .uUll. IIU 1 111111 11 I1111 I III IIII pumping I IIIIii II .II1 III =1I:IiIIl1IIIIIIIIIIIIi 11

CURVE 11 11111 111

!! I Il 111 1 l 11 o MODULATION 1I 1 I ..1I11I ilI .1/1I1 .,,11111IIIIIlllll i111. 11 I ]11L1 /o d111f.l1111 u ,

nCIIli111II111 ii11III 11 IIIII III IUI ilCill 111111111 1 I 1 SOLID LINE-FREQUENCY .. 1 I 111 1 11 .I C...... 11 I i11111111 Is 11

11p I! 11 1 ! o l 111 .!i TT111 1II ..,,an. RESPONSE LIMITS 1 . Illi. 1 11 111 1 . nosy . I 1 ... I ..IIII 1

MIMI .III 1nl1U .I1111111!lI111111111 ..Il. inn PRE-EMPHASIS CURVE- ...Inlui..eiC 11l111n I1111n ! 1 ! 111 1l Inl11nn IIIIInI/:n 1../ .n11i1I.I 11 il.1IICI IIIICIi11

Illllll1I1i11 'l' 11:. IIII TIME CONSTANT 75 1I11 11 I1I 1111.TI T11,¡.I11111.111 11= 11` 111 ugh 111111

I1111 1 1 mmHg li Siililiil11Wiiii.i:¡%i Ì i11i111Ì11tiiiiiCllilÌÌ 1 ;

11CROSECONDS I1UII1111 _ , .IIIII ..l IIIII. I Il,Illl In/1111111r11)1 111 rIII IU 11.T pup LINE-RESPONSE .IIIInI11lil1ll =11IIIC 1 IIIIIIII nip, mop, 111 II nir . I UI .lII 111 ..1I11 II 1 LI IIIII= ;.'/AÌ1 I..1 :II'1 CURVE AS MEASURED

IIÜIIIIIiIIICCIIIICIIII á Cil IIIiiii; IIIII.iI II 1%iiiiiiliiii l1.1 1..11111 1 1 l/IIII ! 1,11 'V 11 111 . 1111 .1 1 JR__ 1111 CIII, 1 lI 1191111

Milk ! i . .._§ : i_.. . j .C.IIIIII .II111 C

11 111.1I II1 .. 1 i '1111 Il1l 1 -. I `i iII111.II1III IIIII,,lCi 1 1 i ... I 1 .. 1 ..111111.,UI UIII 11111 111011.I11111. _. .I1 111.!I 11. . 1 null II11111.III1i11..11111lI 1 IC 1111 1I1i !IIII 1I II IIlli I.111111 IIIII 1.I1iU I III CI1 I III!i I 1

.11 .1 I .I l lll . II 1 ill Illli1 III . I i . iI 11 ' - i . .I ..IIC ...1111. III I1 . 111 , , =g 1 I11111 ! !

IEl.IIlisl/CiQii..nlllw.CIIIIII ...11lil ..Clllia11is.:

I

loo 1000 . 10,000

CYCLES PER SECOND

,,,

a

TRANSMITTER TYPE TT -32-B

M STUDIO EQUIPMENT General Electric BC -11 -A

VSB FILTER TYPE i; , k. HARMONIC FILTER TYPE 4 7 r1 Y

MAIN MICROPHONE INPUT TERMINALS

AUDIO OSCILLATOR

TYPE HP 206A

SERIAL # 765

H.V. DIODE

DC

VOLTMETER

SCOPE

DUMMY LOAD RCA 19191H

FREQUENCY AND MODULATION MONITOR

TYPEG.R. 117OBT

SERIAL # 610

NOISE AND DISTORTION ANALYSER

TYPE HP 330C

;SERIAL # 1341

All limiting amplifiers disabled

Test Set -up for Measuring Aural Transmitter Characteristics

Fig. 2

9. Audio Harmonic Distortion Measurements

The Audio harmonic distortion products were measured using the set up shown

in Figure 2. The aural transmitter was operated at rated power and

measurements were made for selected frequencies at 25 %, 50 %, 100% modulation.

The audio frequencies as tabulated below were supplied by an audio oscillator

H°P. 206A Serial # 766 . Audio distortion products were read directly on noise and distortion analyzer Hb F, type 330" serial # i 34:1 A graph

25% Moc

1.4

of these results is shown on Page 20.

Modulation Frequency Cycles

5o

100

400

1000

2500

5oóo'

75ob 1qÓ00

i500o

Percentage Distortion 100% Mod. 50% Mod.

-1 1.11

0.9 0.9

0.7 0,7 1.1

0.5 0.7 1.2

0... q^_ 1.2 1..8

1.0 1.5 2.0

-18-

1.3

2.e

o

iioq li 1111111.I11111.II !1.1I1111.1II1111.11=.IIIIIII.1I11111...,,1 ..IIIIII.1Ir1111. M" ' .,, u+

- .... ..IIIIII.1111t11 1 1 111111.. IIO .11 1 ..IMI .../ ..1111111n.1111111..ì111IIIr1.1111 0 1..1111...111' C, : n11111 ..111111 IIII menu mum 25/o ABODULATION 1 ..1I11111.. u1 . 111I111C1tI1111/111 ..1II1111.111 11..11n111 1 1 ... / I I .IIIIal11.1111 .111!!dsll_1 1 Y-... MY. __- .IIIItI 1II1111 1 1 .rr ....................... . ......M . , iiCiiii.Ciiiiiiii1 lì 111r11...1IIr11..1n1111nn11Ir11. IIIIlI.Clil1!_ /1

1 N In .IIIII ./I 1111....n1111111wn11111. 1111 l ./.1 iiiiiiiiii'CiliiiÜii 1 ; .111jj11Iu11111...11111n.1111111.l1í11.i' r,/u 1 ! U .IIIIIII1I11111 iiiiiiii.iiiiiii'iiiiiCiiiin ""':"riiáiìiìiiC i i i i C Hi 11 .IIIIII..111 11 1 11u 1 11,l!-- ... 111 ....1 11 . _ .IIIIII..uI111.. III ..1111Ir11..1 /1 H..1111..IIUI .... Np . I . i:Ci11111..1111u .1.111 .1/111l..1111111.111111.11111a..1 11

1 1 CiC " ;I. illl

III"

1 1 I11..11 .III .u11I1 ... 1 II...nllll..1 1111. . ' CI 1 ..1i 111...111 I. . I...1I,Il.. I11 . . 1, t .. 1 11 111 .1111111 1 ..I I 1 .1.11iI11 111 1 1 IIII 1111.1,1 ìl1.1_Ij__ ...IIIII .UIUiI.. IINI ..II IIn.II 1111.A.11/11 1 n IUI MIMEO .uu1 uu. wn .II III...IIIIIIIsII11 1111n .11/11 ..1 11 ..IIIIII.11nryn111.u1I 1II I CCC:iiiii:iÌ wi"""o"f'iiii'ÌìCÚ'iii':iiii'iiiCiiñiliii'i,lppUiiu I '" ' iiiúiiCiC'iüiiui 1 6 n1i1=.II II...I/ulì.. 9 III...iIIlurt. '.lÌìNÌ.C.1' S0°r, MODULATION

' iiiiC'i ì= C. Iá iC

1' tl 1I11 1...1 nll. MIL. ! 1l.li.r!!111.11 .a f 1 H . ^ oW .. .. 1.. 'iC"'11iiiii:ÌHii I `"` ̀ ìii Vììii`'liÌlliìiiiBliGiìiin ` 1 'uI } ` '¡¡,

j .I1111.1.IIU11. 1 IIIINI...n..1ugq.11nI1u1...IIU .. u T + fi r

1 :;111111111. 9 1

11 He.I NC n .1IIIL.n1I . t 1 4-,- f r

-1 1

_1_

ÑI" ''ÌÌ11 +111111 nn 1``1 '

1 ;";'1ÌÜ1:C 1 } ' U.IIIi1In Si

C=' üiGGi'ñüii:CCi %1° . I CHARACTERISTICS O F .N 1 I 111 1 I 0..1 1 . 1 fflIn: 1 THE AURAL CHAttNEE 111 Ii1110 1 r' i't j.! é-a: :iil(,111../I C MIN 1=11 1ru 7 i I1 I

. ii"a' i I ...1pIn.N...I,jjI 1 I. I7T I ..1 1 ..1IH ' t

t iliiH.Ci°tiii.C.1NUiiCüú'iéiiiüWl.iil CI r -- t 4 1.I nnII1I1 .1 1 11

CCii'Ilili'CÜitnii °.ii'iúiiiirii1O'iCii Ìl1""'IÌ' im 11 :C' - ...11 I.CIII 111 l 1n .r .11 111.,/ . 11 . i _t ..11 111111 mod . 11C. I C PI: 1 111111..I/IIII , 1 4 .1.I.1 1 M 1 11..ulll 1 i !OOIflff ill .111111... IIII C I1- .1 N ..I 00 l0 0DU_ATION 11 Ir/ C 1 I 1 111 11i !oll1.1eorl1.. !i !!!!11!_ eee Hip 1iti1CCiI 11I

Cl iiiììì 'ìi° 1 i'i_r.. . liii"i'j 'ììi EOM ' rii:illiii i "uC C 1 It ..u1U.C1 1.111 ,11 C" C= m Ili ..111 1 11111 11 IIIII I1IU1 1 . 1

rill I.11 .1 nll n III 1 11ì i ' 'C ....11nì1. 11 11.1 1 11111t 1 IC u111 1. 1 1 }_ iiiiiiiitiiiiitii.. Wiú1,'liiü,IIIIi 'CiI Ì IiiCCiÌÌiI'.i nl . r CÌÌ':C:iÌÌ 'C' j.. IIII..._1M ' ':C"11C" ' ' I ' .IIl1....I11111. : II.. 11..1'I'lI 1. . I ..._ _ _ .11111 1I11111 . I..C.0 11 1I111 .1 1 IIi ii:i% 1 1 .: ' .. ' .11111...111i11 111..1111..11111E!I1/E1...111IE1I11 .[! .I 1 1 C

50 100 1000 FREQUENCY IN CYCLES

10,000

a

10. Aural FM Noise Measurement

FM noise level was measured using the test set up shown in Fig. 2. A

1400 cps signal was fed in the system at main microphone input. This

was used to establish 0 db reference at 100% modulation. The signal was

removed from the aural transmitter and the transmitter input shunted by

its rated input impedance.

Residual FM noise level is 56 db below 100% modulation with 400 cps. 11. Aural AM Noise Measurements

AM noise was measured using a diode detector in the aural RF transmission

line. The RF probe was inserted in the output transmission line to give

a 4.0 VDC signal. With a noise and distortion analyzer

connected to the diode, the residual noise voltage read .005 volts (RMS).

Signal to noise ratio was 20 log10 .707 (DC Voltmeter) 55.0 db (N&D Analyzer Reading)

Measurements made by KLASWWI Date 10/27/66

-20-

13. Measurements of Spurious and RF Harmonic Measurements

RF harmonic level for the aural and visual transmitting systems were

made using the equipment set up shown in Figure #3. The aural transmitter

was operated at rated power and the visual at rated black level power. A

directional probe was inserted in the transmission line, beyond the

harmonic filter and the GR unit oscillator tuned to a frequency of

carrier frequency +30 MHZ. The probe depth was then adjusted to give a

convenient reference level and locked in that position. Fundamental

rejection filters were then inserted as shown in Figure #3 and tuned for

maximum fundamental rejection. The oscillator was then tuned to each

harmonic frequency +30 MHZ and harmonic level read in db below carrier

reference. Corrections for directional probe and fundamental filters

were made and the results of measurements on the aural and visual RF

harmonics were then tabulated below.

Harmonic Visual Transmitter Aural Transmitter db below fundamental db below fundamental

2 90 db :tettr tba:a 90

3 bStl?2" tLlL'^. 90 better 'Aar: 90

4 L_sfAdar ? arrzs3aY..î.e

5 ,:sr ea,table

6

7

8

9

10

Measurements made byK..r A.S -TV Date 10/27/66

-21-

1.

TRANSMITTER .TYPEI*_r1, 6 ! ap i =.E TT32B (ALr. )

IF AMPLIFIER TYPE 1216A SERIAL - - --

VSB TYPE p' -? -E.1

HARMONIC FILTERS TYPE

MIXER RECTIFIER TYPE 874!4R

OSCILLATOR

TYPE CSR. 1151. SERIAL 160

FI METER TYPE SERIAL

1

10 db PAD

T 10 db PAD

FUNDAMENTAL REJECTION FILTER (NOT USED WHEN MEASURING` FUNDAMENTAL LEVEL)

Ó

10 db PAD

10 db

PAD

Test Set -up for Measuring Relative Harmonic Level

Fig. 3

DUMMY LOAD

TYPFRc.A MI 19191E

SERIAL # 1046

Measurements made at KIRS -TV Date 10/27/66

-22-

EXHIBIT NO. E -2

Frequency Measurement made on December 1, 1966, 2:10 am

Equipment: Motorola T1020A Frequency Meter (Gertsch) Serial #860 Factory Calibrated March 18, 1966

Method: The T1020A Frequency Meter was allowed a 30 minute warm up period. Internal oscillator was calibrated in the normal manner.

A zero beat was obtained on the T1020A against the Visual Carrier and computed to be 181.24015 mc. The station frequency monitor indicated a minus ( -) 100 cps.

Internal calibration precedure was repeated for the Aural Frequency. With no modulation a beat was obtained against the Aural Carrier on the T1020A and the frequency was computed to be 185.74000 mc. The station frequency monitor indicated a minus ( -) 150 cps.

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