[SixClub] Best Mobile 6M Antennas?

[Chris Boone]

A 1/2wave antenna on 6 will NOT be a 50ohm antenna...it will be a HI-Z
antenna requiring a matching network....
And can easily be affected by low Z surroundings...not worth the effort. On
CB it is a 1/4 wave antenna and thus is a 50ohm match...but on 6? Unless you
had a matching network at the base, it wasn't working worth a flip....SWR
was 20:1.

Chris
WB5ITT

-----Original Message-----
From: sixclub-bounces at mailman.qth.net
[mailto:sixclub-bounces at mailman.qth.net] On Behalf Of ke5apj
Sent: Friday, April 17, 2009 3:24 AM
To: World Wide Six Meter Club
Subject: Re: [SixClub] Best Mobile 6M Antennas?

In the 70's there was a model of the "Francis" (Orange color) fiberglass CB 
antenna that was 108" when used with a heavy duty spring on a bumper mount &

in a pinch can be used on 6M with power reduced, as the antenna was made for

CB radio use (Without the spring, it is ideal for CB use.), I had two of 
these in my CB radio days mounted on the back of a 70 Ford Torino GT coupe, 
after I sold the car & mounted the antennas on the bumper of a pickup, it 
took one low clearance overpass to knock off the top several inches of one 
whip.

Both antennas survive, the undamaged one is still occasionally used for 6m 
(But not that often, as it is simply too long & the end needs an anchor 
strap to my pickup cab in order to keep from hitting tree linbs & 
overpasses, which may make it closer to a horizontal plane & closer match 
SSB 6m when low power is used.).

Howard Bingham
KE5APJ

-------------
----- Original Message ----- 
From: "Chris Boone" <Cboone at earthlink.net>
To: <doc at kd4e.com>; "'World Wide Six Meter Club'" <sixclub at mailman.qth.net>;

<AR52MHZ at yahoogroups.com>
Sent: Thursday, April 16, 2009 11:33 PM
Subject: Re: [SixClub] Best Mobile 6M Antennas?


>A gain antenna on 6 will have to be a 1/2wave or taller. (108inches
> minimum)......A 5/8wave will be about 150 inches (remember 6 is 3 times
> longer in wavelength than 2mtrs!!!)....Gain mobile antennas is not easily
> done on 6 and not worth the effort.
> Power antennas have connection issues between the joints as they rise and
> fall....not good for transmit....ok for AM broadcast....
>
> Chris
> WB5ITT
>
> -----Original Message-----
> From: sixclub-bounces at mailman.qth.net
> [mailto:sixclub-bounces at mailman.qth.net] On Behalf Of kd4e
> Sent: Thursday, April 16, 2009 8:52 PM
> To: World Wide Six Meter Club; AR52MHZ at yahoogroups.com
> Subject: [SixClub] Best Mobile 6M Antennas?
>
> What are the best 6M antennas?
>
> I am mostly interested to learn about those with
> some gain.
>
> Also, has anyone adapted a power antenna for a car to
> use as a 6M mobile antenna - one that "disappears" so
> crooks & vandals don't mess with it?
>
> -- 
>
> Thanks! & 73, doc, KD4E
> FS/Swap/Wanted: http://kd4e.com/swapn.html
> Free OS : http://www.PuppyLinux.com
> Personal: http://kd4e.com
>            |_|___|_|
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> ============\ # KD4E
> Have an http://ultrafidian.com day!
>
-- 

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