From: Stu Ellis (stuinnh@mvnut.us)
Date: Fri Mar 18 2005 - 03:57:33 PST
Hi Jim!
Has anyone tried it??
"Stu"
Southern New Hampshire, USA
"Live Free Or Die"
MVPA #14790
1967 M151A1 Jeep
1964 M416 Trailer
1986 M1009 Blazer
-----Original Message-----
From: Military Vehicles Mailing List [mailto:mil-veh@mil-veh.org] On Behalf
Of J. Wiehe
Sent: Friday, March 18, 2005 6:47 AM
To: Military Vehicles Mailing List
Subject: Re: [MV] Military Radio's
>From Aug. 27, 2003.
I have not tried this so, as some have said,
" Your mileage may vary ".
If you're in the just gotta have mode:
http://shakespeare-military.com/broadband/sf3512.htm
Jim Wiehe VA3JHW
j.wiehe@sympatico.ca
From: "prcradio" <km6ab@p...>
Date: Wed Aug 27, 2003 3:31 pm
Subject: Re: Modify an MX-6707 with AS-1729 for use on CB?
Here are some instructions I gave someone a while back, don't know if
they did it or how it worked but it's worth a try:
Take the bottom cover off the 1729 and look at the bottom of the ant
with the coax cable/connector facing you. Find the 5th tuning
capacitor
(small screw driver adjustment) counting from the coax cable in a
counter-clockwise direction. This capacitor (C8) tunes the lowest band
30-33mhz on the antenna and will probably allow you to match the
antenna at 27mhz. You will need to have the whip attached and
preferably mount the antenna on the vehicle. If not mounted, tune the
antenna on a wooden ladder, away from any large metal objects. This
antenna does not require a ground plane.
Hope this helps.--
In armyradios@yahoogroups.com, "Rick" <kingkozy@p...> wrote:
> Hi Again,
>
> Wow thanks for all the responses. I put a MX6707 and AS-1729 on my
> Hummer for visibility on drives in dust and the such like, mag
mounts
> are okay, but they get knocked off all the time from overhead
> branches, I'd really like to try the mod on the MX6707 to match to
CB,
> it is an awesome, damage tolerance antenna. Does anybody have a list
> of the values of the coils and condensers shown on the schematic for
> the MX6707? There is an empty position on the rotary switch that
> would lend itself beautifully to modification. I checked the SWR
and
> it was 4.5 at CB freqs in the 30-33 position and about 7 at 56-60
> position, with the appropriate frequencies, it was 1.1 to 1.3 over
the
> entire range on nearly all freq position, I was impressed, the
> government makes good stuff. I wish they would go to 2meters.
>
> Rick
>
> OTOH, if you make it work, I'd definitely be interested to hear about it.
> I'm currently gearing up to try to figure out what it'd take to use an
> AS-1729 on CB (I'm mostly intererested in how to modify the antenna to
> reduce SWR, rather than just assuming that I have to match using
> electronics). However, I'm a beginner and there isn't all that much
> technical info available on the beast... I don't even know (yet?) what
exact
> elements were used in MX-6707 for 30-33MHz range. I think I'll have to
> find/build a grid dip oscillator as a starter point (and I suspect you'd
> have to do the same, no matter which antenna you pick). However, if you're
> in the rural area, you might be able to go to some good CB/HAM shop. I
have
> no idea where to find one in the Bay Area :-(
>
> Vadim.
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