I'd have to be really board to do this, but I would brute force the
synthisizers to run on the ham band by using a micro controller
talking straight to the synth chip. I have done this to a Cadco P-375
demodulator and now have the only one that I know of in the world that
receives on cable channel 59 1/8 (434.0 MHz)
and then I would just live with the ACSSB.
Or if you don't like that I am sure you could modulate the VCO of the
PLL with inteligence and forcing the power modules to run full on to
make it transmit FM, but I would have to see a schematic to tell you
what if anything you could do with the reciever.
On 5/4/05, Eric Lemmon <[EMAIL PROTECTED]> wrote:
> Jeff,
>
> I have a working ESP1000 repeater, and I am convinced that it is not worth
> the effort and expense it will take to convert it the 220 Amateur band.
> The primary impediment to conversion is that the SEA ESP1000, and all of
> the mobile and portable radios associated with it, operate on companded AM
> single sideband. I talked with an engineer at the company that now markets
> SEA products, and he told me that the conversion to wider bandwidth FM
> would involve a major redesign of both transmitter and receiver. In
> addition, the synthesizers are blocked from being programmed out of band.
>
> Perhaps the most practical action is to throw away the SEA transmitter and
> receiver boards, and replace them with Hamtronics or Maggiore modules. At
> least, you'd be able to use the chassis and power supply.
>
> 73, Eric Lemmon WB6FLY
>
> Jeff wrote:
>
> > Has anyone here been able to take a SEA ESP1000 commercial 220 acsb
> > repeater and mobile and retune to the amateur part of the spectrum
> >
> > There are a lot of these repeaters floating around and I have used them
> > for commercial applications and they have fantastic coverage and I'm
> > sure they would be great in the amateur band.
> >
> > Does anyone know????????????????
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
>
> Yahoo! Groups Links
>
>
>
>
>
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