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Author Topic: Best disguise 2M antenna??  (Read 1532 times)
WA1USV
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« on: April 17, 2002, 05:02:12 PM »

This is a form vs. function question. I know I will compromise gain if I don't go with a 4' 5/8 wave antenna, but I have a new compact car and don't want to advertise that I have a fance 2M rig somewhere in it. Any suggestions? Such as, 1/4 wave -- about 30" antenna with helical resonator?

Tnx!
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WPQX931
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« Reply #1 on: April 18, 2002, 04:23:15 PM »

where are you driving?

1/4 wave=20in not bad, and work well w/in a metro area. 5/8 doesn't work that well in the city or hilly places.  

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WA1USV
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« Reply #2 on: April 18, 2002, 07:01:21 PM »

It's a new Ford Focus. I'm thinking of a Ant Specialist cellular look-a-like -- through the glass mount. I'm in vermont so it's hit or miss driving around the mountains. when you lose it, you lose it and 1kw won't make it out of the really tough places.
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K0BG
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« Reply #3 on: April 21, 2002, 08:03:41 PM »

Antenna Specialists make a "fixed" (non-motorized) am/fm and 2 meter (highband actually) with a small matching box which will handle about 100 watts. Price is in the $80 range.
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WA1USV
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« Reply #4 on: April 22, 2002, 07:25:20 AM »

Yes, thanks. I'm been looking at it on-line. It's 23" long, 1/2 wave, unity gain -- "cellular look-a-like" type. Losing 3+ db compared against a 5/8 wave trunk mount whip does a mental head game with me but I know the loss will not be noticable in actual field performance, i.e., if there are no big mountains in the way, I'll be able to hit something!
tnx
john
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KE4SKY
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« Reply #5 on: April 25, 2002, 08:29:53 AM »

The www.hamstick.com economy dual-band whip is an 18" cellular lookalike with open "pig squiggle" phasing coil in the center.  It has a 3/8-24 thread and you can get the whip only for about $7 or complete with a 3" mag mount and coax termination with your choice of BNC or PL259 connector for under $20.  I have several as spare and loaner antennas for our RACES equipment cache, which are used several times a year for drills and callouts and have been extremely pleased with them.

Sweeping these on my MFJ-469 I have found that they work OK outside the ham bands without retuning.  In addition to being 1.5:1 or less across the FM portions of the 2m and 70 cm ham bands, on a metal vehicle they also show VSWR under 2:1 on high-band VHF, VHF marine band, MURS, the 453-465 MHz public safety bands and GMRS. These are only unity gain, but very broad banded, rugged and inexpensive.  Everyone should have one of these in their "Go Kit" as a spare antenna.

73 de KE4SKY
Virginia RACES State Training Officer
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AA1ZH
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« Reply #6 on: May 02, 2002, 07:30:50 PM »


I had the same constraints, and I went with a Comet B-10.  It's a dual band (2/440) antenna, no gain on 2M, and 2dB on 440.  In an urban area, I have had good results.
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AA1ZH
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« Reply #7 on: May 02, 2002, 07:32:34 PM »


Sorry, I forgot to add - it's only 12" tall, and is a black cellular look alike.  The cellular look alikes  are now part of the landscape.  It's not even noticed by other people.
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W0FM
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« Reply #8 on: May 06, 2002, 03:23:00 PM »

I had good luck with a decal antenna available from Amateur Electronic Supply (can't remember the mfgr's name).  It is about 4" square and dark color.  You stick it on the inside of your windshield (in the glare band) and you can't even see its there.

Also, a company called STI-CO (716) 662-2680 makes direct replacement disguise antennas for most makes of cars and trucks.  They provide up to 3dB of gain and handle up to 100 watts.  We use them for radio installtions on undercover police cars and they work quite well.  Good luck.

73, Terry, WØFM
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