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Author Topic: Advice on 20 meter antenna  (Read 691 times)
AB9DF
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Posts: 81




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« on: September 24, 2003, 02:30:41 PM »

I am using a tri mag mount on my van and have a 40 meter hamstick.  It doesnt receive well at all on 20 meters.  Thought about buying a 20 meter hamstick but thought I would ask for any help before doing so

Any suggestions?  I understand that hamsticks are very lossey.  

Thanks Rob AB9DF
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AA4PB
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Posts: 12696




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« Reply #1 on: September 24, 2003, 03:16:49 PM »

If it did receive well on 20M then it would be defective. Use a 20M Hamstick for 20M and a 40M Hamstick for 40M.
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AB9DF
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« Reply #2 on: September 24, 2003, 05:50:09 PM »

I guess my question is about what other antennas might be better than a hamstick but still a lower priced antenna?  I think that my 40 meter hamstick really chokes out the signal on 20 meters

Any insight would be appreciated

Rob AB9DF
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WB2WIK
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« Reply #3 on: September 24, 2003, 06:07:03 PM »

You're right about the 40m Hamstick not working on 20m -- it's not supposed to.  On 20m, it's an electrical half-wave fed with coaxial cable at one end -- that doesn't work!

Simply replace the 40m Hamstick with a 20m Hamstick, and that will work just fine on 20.  In fact, the 20m Hamstick is far more efficient, and a better performer on its band, than the 40m Hamstick will ever be.

WB2WIK/6
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AA4PB
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« Reply #4 on: September 24, 2003, 10:01:21 PM »

You won't find any multi-band mobile antennas in the price range of the Hamstick. Purchasing a 20M Hamstick is the least expensive solution.

There are the Outbacker whips that have a "wondering wire" and various taps to plug into for the band you want to use. They run about $270.

There are the Hustler antennas where you can change loading coils for the desired band or even attach an adapter that uses 3 coils (3 bands) simultaniously. The mast is about $30 and each coil is around $25 plus you need a rather substantial ball mount to hold it all. That's another $20 for the mount and $12 for the spring.

There are various screwdriver antennas that can be tuned for the band from inside the vehicle. You'd probably have a minimum investment of $300 to $400 for one of these plus you will likely need to custom weld a mount to the vehicle.

You could also go with a 102-inch stainless whip and an SGC tuner that would tune the antenna automatically when you transmit into it. The tuners run in the neighborhood of $400.

Or you could buy a 20M Hamstick for about $20.

By the way, if you are only receiving (no tranmitter) then a plain old 102-inch CB whip will generally do better than any tuned antenna (like the Hamstick) which is operating out of band. It won't be as good as a 20M Hamstick on 20M but it will probably do better than a 40M Hamstick on 20M.

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KC8AXJ
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« Reply #5 on: September 26, 2003, 09:55:23 AM »

You can tune a 40 M " Hamstick " for 15 M
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KC8AXJ
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« Reply #6 on: September 26, 2003, 10:03:02 AM »

In thought with this thread.

I haven't done any mobile HF yet but, what are the best bands to go with overall if say you just want to get 2-3 hamsticks. I've seen them sold as a package deal from folks who must have gone with various multi-band types.

Have a 40M and use it for 15 as well, and then
get a 17 M ?? I've seen opinions about those being the "best mobile bands" .

I realize what people may think of "hamsticks" ect.,but this is not something some of us are out here contesting with our trying to talk to a relative over in Sweden. Just a little fun once in a while.

73
Steve
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N3ZKP
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Posts: 2008




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« Reply #7 on: September 26, 2003, 02:58:29 PM »

<< what are the best bands to go with overall if say you just want to get 2-3 hamsticks. >>

With band conditions as they are now, 20 and 17, with 40 as a distant third, especially with a ham stick. 10, 12 and 15 are pretty much dead most of the time.

Lon
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WB2WIK
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« Reply #8 on: September 29, 2003, 02:31:02 PM »

Actually, 10m, 12m and 15m have sprung back to life recently, and those bands were "open" during daylight hours all this past weekend (9/27-9/28).  As early as daybreak, I was working DX into Europe and Africa from Los Angeles on 10m SSB both days.

But granted, they aren't always like this -- and when these bands are open, especially at this point in the solar cycle, they'll be open during *daylight hours,* and most likely never at night.

So, the "best HF mobile band" choice is governed largely by when you want to operate!

WB2WIK/6
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AA4PB
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« Reply #9 on: September 29, 2003, 08:45:39 PM »

I'd say 17M, 20M, and 40M. You can make some good contacts on 40M with a Hamstick. The benefit of 40M is that it is almost always open to somewhere. Here on the East coast I can usually copy the ECARS net (7255) all day long. If I could only have one band for mobile it would be 40M.

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KC8AXJ
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Posts: 303




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« Reply #10 on: September 30, 2003, 12:30:57 AM »

Thanks for the info!!

Rob AB9DF,I didn't mean to steal your post here. I hope YOUR question is answered also!

73
Steve
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