hamlarks - chchhamradio.org.nz

July 2020

7.050

Christchurch Amateur Radio Club

HAMLARKS

Christchurch Amateur Radio Club. NZART Branch 05

HAMLARKS July 2020 PAGE 2

Branch 05 Club re-occurring events

MAIN BRANCH MEETING First Wednesday of the month 7.30pm, except January. All visitors welcome. At The Clubrooms, 5 Idris Road, Fendalton. Branch 05 Website www.chchhamradio.org.nz ACTIVITIES and PROJECTS NIGHT Every Tuesday 7:30pm at 5 Idris Road, Fendalton. All visitors welcome. DAYTIME MEETING (Branch05) Meet third Thursday of month, 1PM at Branch05 clubrooms. All visitors welcome. COMMITTEE MEETING 1st Monday after branch meeting 7.30pm At 5 Idris Road, Fendalton AREC MEETINGS Normally the 2nd Wednesday of the month 7.30pm. At 5 Idris Road, Fendalton DEADLINE FOR HAMLARKS COPY 11 days before the main branch meeting. WEEKLY CLUB VHF NET Every Sunday 8:00 PM on 145.625MHz repeater if available, otherwise 147.050MHz repeater. OFFICIAL NZART BROADCAST Last Sunday of the month 8:00 PM on 147.050MHz repeater. CW PRACTICE Boyd ZL3LE every Tuesday at 8pm. 3550 kHz. Listen in your shack or come along to Branch 05 clubrooms. QUERIES REGARDING THE DELIVERY OF HAMLARKS [email protected] Views expressed in "Hamlarks" are not necessarily those of the Editor or of the Committee of the Christchurch Amateur Radio Club. The Editor reserves the right to edit articles submitted for publication for reasons of clarity or length. No part of Hamlarks may be reproduced without the express consent of the Editor.

Speaker for next branch meeting

To Be Announced

http://www.chchhamradio.org.nz/

mailto:[email protected]



From the President ZL3TAO

The past few weeks have been very busy for the clubrooms. We created nine new hams on Sunday 14th, afternoon. The Robotics Group had their first face to face meeting on Monday 15th and Tuesday nights have once again been very busy. CARDS had their meeting on Wednesday 17th. On Thursday 18th afternoon the Daytime group had their first face to face meeting for three months, and on Friday 19th morning the Museum Group started on the storeroom. Saturday 20th there was a SAR IMT training day at the Clubrooms. On Monday 22nd at 7.30pm there was a Contest & Awards meeting. Items discussed included the Memorial Contest, VHF Field Day and Jock White Field Day plus a couple of new activities. AREC had a WanderSearch lecture via Zoom on Wednesday 24th. On Thursday 25th there is a Hamcram+ session for the new Hams where we get them started on their first 50 contacts (some are well under way) and answer any questions they have. The Museum Group will be back into the storeroom on Friday morning. On Monday 29th June at 7pm is a VHF Activity Hour - no Easter Eggs on offer this time. You will probably find the new Hams on one of the repeaters. It is also an opportunity to try a new mode. Cheers, Ian

Secretary Rory’s Ramblings - ZL3HB

Well we are back into it again with meetings etc. Was an amazing time in lock down but seems we have all gone car crazy since, with vehicles everywhere and all back to normal it seems. June 13/14 weekend was another Hamcram with 9 successful candidates so that was great. Already 3 booked for next one on 26/27 September. So if you know of anyone interested pass them over to Mike ZL3MWD. Tuesday nights again in full swing with 45 the other night so you are making good use of your club. And estates sales & scrap & trading table all helping the bottom line which is good.



If you have any ideas for club projects please let committee know. There are more poles & aerials planned for more radio versatility. See you in July. Rory ZL3HB

HamCram success, again

Welcome to the new members, all passes to the HamCram exam on Sunday 14th June. I really must remember to gather their call signs for Hamlarks! Also thanks to the tutors, Mike, Steve, Don, Richard, Dave and Cath. Great work, team.



To those who have not paid - Subs reminder, please NOTE!

Annual Subscription

Chch Branch 05 Subscription for 2020

Single Membership $25 if paid by 31st March $35 if paid after 31th Mar

Family Membership $35 if paid by 31st March $45 if paid after 31st Mar

Junior Membership if still at school - free. Need parents email address Our Club Bank Account number is:

Westpac 03 0826 0145 249 00

If you pay by internet banking, please please use your Call Sign as the transaction reference number so that our treasurer can identify you.

If you are posting your Subscription, please send to: Christchurch Amateur Radio Club, P.O.Box 1733, Christchurch.

The case of the missing……

Does anyone know the whereabouts of a silver/ali attache case that was under the spare spectrum analyzer in the loft ? Not sure how long this has gone missing. This is my personal unit. I brought it in a while ago and forgot to take it back home. Thanks, Mark ZL3JVX



Sorting out which SSTV to use and why. ZL3DEM

The SSTV Handbook a has an amazing amount of information most of the links in this document are taken from here: http://www.sstv-handbook.com/ “The most popular modes of SSTV are Robot, Scottie, and Martin.” This link is a good analysis of the above 3 modes and what they look like on a waterfall https://www.sigidwiki.com/wiki/Slow-Scan_Television_(SSTV) This link is a pdf of the majority of modes and their formats extract shown: https://www.sstv-handbook.com/download/sstv_05.pdf

http://www.sstv-handbook.com/

https://www.sigidwiki.com/wiki/Slow-Scan_Television_(SSTV)

https://www.sstv-handbook.com/download/sstv_05.pdf



A very detailed list of the protocols and how they are constructed http://www.sstv-handbook.com/download/sstv_04.pdf

There’s quite a bit of reading to be done – but I’m thinking it comes town to LPM (lines per min) There doesn’t appear to be a huge difference between Robot, Scottie, and Martin

The longer the transmission the more data – so for a poor link, slower.

References from the Hombrew Talk ZL3UYJ

This is an expanded list of references from my Homebrew talk at the March club meeting. Books: Solid State Design for the Radio Amateur, Hayward and Demaw, ARRL Experimental Methods in RF Design, Hayward, Cambell and Larkin, ARRL The Art of Electronics, Horowitz and Hill, Cambrigde Press At the Christchurch Library: QRP Basics, Dobbs, RSGB Test Equipment for the Radio Amateur, Smith, RSGB The ARRL Handbook for Radio Communications, ARRL Successful Wire Antennas, RSGB QST magazine, ARRL equivalent of Break-In QEX magazine, ARRL technical magazine Practical Wireless, Warners Group Publications Plus others, search at my.christchurchcitylibraries.com for ‘amateur radio’ or ‘ham radio’

http://www.sstv-handbook.com/download/sstv_04.pdf

https://my.christchurchcitylibraries.com/



Magazines: SPRAT - GQRP club magazine www.gqrp.com VHF communications - out of print, some paper copies at Branch 05 Pick up some of the old magazines from the Branch 05 table Ham radio kits: Iler20/40 - www.qrphamradiokits.com MDT DSB Transceiver - www.ozqrp.com QRP Guys - www.qrpguys.com Components: Jayar, Gasson Street South Island Components, Essex Street Digikey, www.digikey.co.nz, free shipping for orders over NZD60 + GST Mouser, nz.mouser.com, free shipping for orders over NZD66 + GST Element14 (ex Farnell), nz.element14.com, free shipping NZD50 + GST RS, nz.rs-online.com, free shipping PCB CAD software: Kicad - www.kicad-pcb.org Eagle - www.autodesk.com/products/eagle/overview, requires free Fusion360 license PCB Production: www.oshpark.com - US$5 per square inch, shipped, 3 copies www.jlcpcb.com - US$4 per 100mm x 100mm, US$7 shipping, 5 copies VHF Antennas: Ullrich Aluminium, www.ullrich-aluminium.co.nz DK7ZB - www.qsl.net/dk7zb/ DG7YBN - www.dg7ybn.de YouTube: Charlie Morris, ZL2CTM also http://zl2ctm.blogspot.com/ Peter Parker, VK3YE also http://www.vk3ye.com/

http://www.gqrp.com/

http://www.qrphamradiokits.com/

http://www.ozqrp.com/

http://www.qrpguys.com/

http://www.digikey.co.nz/

https://nz.mouser.com/

https://nz.element14.com/

https://nz.rs-online.com/web/

http://www.kicad-pcb.org/

http://www.autodesk.com/products/eagle/overview

http://www.oshpark.com/

http://www.jlcpcb.com/

http://www.ullrich-aluminium.co.nz/

http://www.qsl.net/dk7zb/

http://www.dg7ybn.de/

http://zl2ctm.blogspot.com/

http://www.vk3ye.com/



Hamads

For Sale I have a very low mileage Yaesu FT1802 for sale. I'd like to see $250. My contact details are 021 365550 or email at [email protected] Oliver ZL3OOC

Wanted - Tait/Hutton style base with ground plane, main antenna can be missing or damaged. Steve ZL2UCX [email protected]

For Sale. On behalf of CMRS. Kenwood TRC-70 commercial HF SSB transceiver. Complete with instruction manuals. Make an offer. Ph 3832471 or 027 637 6497

For Sale. Have your own callsign carved out of wood and mounted. See Picture. $30 plus $7 PP. Contact ZL3PRA Rob Packer [email protected]

Wanted - I am interested in purchasing a TS 520 advertised on Trade Me but passed in. The Q&A says it is part of a deceased estate. I have put a request for a “buy now” price, but have not heard back. I am a keen buyer & will pay top price. ZL1AZB Russell Young [[email protected]]

Free - 1 metre Offset Focus satellite dish for free for the Club or for any interested member. There is also a mounting stand for mounting it on to a wall or roof. Robert Walker [email protected]

Stolen Gravity Canterbury had some radios and generators stolen in the week of 4th May. Items were: 18 Icom VHF IC-F3003, Red Honda generator - brand new with a red cover Grey and Black generator. Theft has been reported to Police. Any information please contact Police





Lockdown radio

Rick sent me this gantt chart, looks like he has a busy week.

Antenna training kit Anten’it

A new antenna training kit concept where students can design and measure their own antennas in time-limited antenna laboratory lectures. The antenna design kit is made of metal and dielectric bricks, ground planes and connectors. Students can start their design with basic analytical calculations, use the bricks to build the antenna, measure their antenna and iterate directly in front of a network analyzer. All cells are re-usable, therefore they can disconnect the bricks and use them to build another antenna. Our product family is called Anten’it. A website where you can see a 4.30 minute video, see detailed product documents and academic publications for this concept. www.antenit.com

http://www.antenit.com/



Minutes of the Branch 05 meeting

Christchurch Amateur Radio club meeting 3rd June 2020 Apologies ZL3TVP, ZL3TFN, ZL2BCF, ZL4FZ. Moved to accept by Ian ZL3TAO. Carried. Minutes of April Zoom meeting moved to accept by Rory ZL3HB, seconded ZL3SI. Carried. Reports AREC Slowly getting back to normal. Two near callouts that didn’t proceed. Next meeting will be at clubrooms & on zoom. Wander search training on zoom soon. Awaiting details for a SAREX Repeaters Mt Herbert trip went well. Cloudy but tank painted and aerial changed to a temporary one. Original has turned & has faulty cable. Installed low voltage cutout & MPPT solar controller. Signals up 3db. Maybe another trip before winter?? Marleys tank paint next. QSL Bureau Nothing in. Tuesday night 45 last night so back to normal. Band report Des ZL3AK says 20m & 40m active. General Business Ian ZL3TAO gave out prizes of choc eggs & nut bars for Activity night. to ZL3KDOT, ZL3PTR, ZL3RIK & ZL3GIL. Hamcram coming up in 10 days with Hamcram plus the following Thursday. Vintage Wonderland has some radio gear for sale from a deceased estate. Mike ZL3MWD has had another successful scrap run with $284 raised. A 2/3 drawer filing cabinet needed for shack if anyone has one. Mike ZL3TMB then conducted an auction for the remainder of David ZL3DO estate. Meeting closed 8.25 PM. Then Kelvin ZL3KB gave a talk on where we are at with Radiotek & future plans.

hamlarks - chchhamradio.org.nz

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