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HF AntennasEspecially stealth models for
those in an HOA
By Dave Land
KD5FX
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Dipole
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Dipole
Easy and cheap to build, can be made with small gauge wireFor stealth applications (suggest 18ga black wire from Frys)Single band antenna when fed by coaxWorks good for multi-bands when fed by open wire line and usinga tuner
How to build one can be found at:http://www.aa5tb.com/dipole.html And many other places
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Multi Band Dipoles
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Multi Band Dipoles
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Multiband Dipole
No neighbors behind the house
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Random Length Multiband
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Verticals
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Flag Pole Verticals
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Flag Pole Verticals
• 15.5 to 28 ft high
• 20 meters and above or 80 meters and above
• Radials required
• Tuner required
• Remote tuner at the base is best
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Lots of other Verticals
S9v JR, only 18 ft and $50 Requires radials
MFJ1622 Apartment antenna
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Remote TunersMany antennas work best with one of these,
many models available• SGC SG-231
• Some require
12 VDC, others
are powered
over the coax
• MFJ-926B
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Rain Gutter
• Should be a new gutter• May required sections to be
bonded together• The longer the better• Gutter & Downspouts can’t be
grounded• Ground and radials required• Remote tuner required
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Inverted L Wire Antenna
• Remote tuner required• Should not be a resonant length• 70 or 140 ft recommended
tuner
Ground & radials
Coax to rig
Mount near ground level
Run wire up to eve and isolate under eve of the house
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Fencetenna
Low loss Coax to Tuner inside
Wire along top of fence 70 ft (non-resonant length)
Wire along bottom of fence 70 ft
1:1 CurrentBalun
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Fencetenna
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G5RV
Need to be mounted high enough that the ladder line is vertical for bestoperation. Not a good multi-band antenna.
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W5GI Mystery Antenna
All band dipole type antennahttp://www.w5gi.com/mysteryantenna.htm
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Mobile Antennas in the back yard
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Mobile Antennas in the back yard
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Buddipole Antennas
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Hamstick dipoles
Isolate one for each band
80 mtr pair
Could be any bandMust be in pairsBest to tune-up on a vehicleCould be mounted in atticOr in back yard out of sight
Coax to station
40 mtr pair
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Hamstick dipoles
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Isotron80 & 40 mtrmodels arevery narrowband
20 mtr workswell
Omni-directional
Very small& Can be disguised asTV antenna
20 mtr
40 mtr
80 mtr
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Magnetic LoopsThis version is 3.5 fton each sideCan be tuned from 20to 10 meters (one band at a time)Larger versions will workOn 80 or 40 mtrs
How-to website:http://standpipe.com/w2bri/build.htm
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MFJ Loops
MFJ1780 14-30 MHz Loop
MFJ1786 10-30 MHz Loop
Several other models available
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No radial verticals
Diamond BB7V, 22 ft, 250 W, 2 to 30 MHz
Comet CHA-250 23ft 5in, 250 W, 3.5-57 MHz
Read the reviews on eham.com
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No radial verticalsActually a Vertical Dipole
FX Tenna
Bravo 5
Bravo 5
FX Tenna
http://www.kd5fx.com/FXportable/fx_portable_antenna.htm
http://www.n6bt.com/n6bt-Bravo5-1.htm
Both cover20 to 10 mtrs
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If you have trees….
• Hang a dipole or end fed L or random length wire between trees– Use small gauge wire (18 ga black wire is ideal) – Higher is better– Slingshot or bow and arrow to get wire up in the
tree
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Attic antennas
• Many types of antenna can be mounted in the attic IF you don’t have Radiant Barrier (Tech Shield).
• Need lots of room, keep them away from metal objects like heaters and ducts
• Wire antennas can be run near the peak of the roof inside the attic, bent in odd shapes to match the space available.
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Ventenna for VHF/UHF
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Great Antenna Reference Website
• Reviews of various antennas (and other ham equipment) at www.eham.com
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The Ideal SetupW1AW