CB to 10
Brian Carling
bcarling at CFL.RR.COM
Sat May 27 09:11:32 EDT 2006
Or better still leave it as an AM rig on 29.0 to 29.2 MHz
> Hi Doc:
>
> If you don't have the articles I certainly do. Saved all that I could find
> on that off chance I would find a really good deal on several rigs and
> convert them.
>
> The 40m chnl HyGain/Cybernet PLL-02A synth chip was the favorite. Replace
> one crystal and realign the synth, placing 29.6 mc on CB channel 30 and you
> are almost there. Take the audio voltage off of the AF chip thru a 5K pot to
> the synth test point and you have transmit FM. At that point you can leave
> everything alone and slope detect the audio but you don't have any squelch.
> If you want to guild the lilly, pull the Toyo AM narrow filter and put in
> one that has a much wider BW and get a lim/dim chip (don't remember the
> number but ECG still has the replacement chip available as of a couple of
> years ago) for your audio recovery and there you have it.
>
> I did about a dozen of them in the late 70s early 80s. Started with a bare
> board, added S-Meter, RF gain, did all the cool mods, and put them in cases.
> Also converted a bunch of HyGain/Kraco, Sears, etc 23 and 40 chnl CBs too.
> Had a ball, gave most of them to friends. This all happened during my tour
> in England. Worked a bunch of European/Asian/African DX with about 5 W and a
> converted CB vertical. Great stuff, that!!
>
> Lew Franklin from CB City International (check his website) has a whole
> bunch of info, books and how-tos on putting these rigs on 10 FM, AM, 6M,
> etc.
>
> OK, soon as I take my meds I'll be better.
>
> Psssssssst, Doc, wanna get rid of some of those old boards??
>
> 73 Rich K7SZ
>
> > I suspect that I have the conversion articles somewhere if there's any
> > interest. I guess they could be used for the 27MHz CB band, but who's
> > interested in that now - if it's still being used at all?
> >
> > Doc, W4ITJ
>
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