The radios that I have were from Canada, and was originally on 413 Mhz. So
chances are they will not hit the high side, but then also found that the xtal
was cut wrong.
Mathew
[EMAIL PROTECTED] wrote:
At 1/2/2007 13:07, you wrote:
>Mathew Quaife wrote:
> > This is what
> > makes me believe that the uhf receiver that I have will not handle
> > the high side cut.
>
>Actually, I have my doubts about a 450-470 split rx making it down to
>434 without some serious work. I know a Micor won't do it.
>You should use a 403-430 split rx instead.
No such thing AFAIK, certainly in regards to G.E. RXs (standard bands are
406-420 & (rare) 420-450). 434 is right in the middle between the low end
of 450-470 & 406-420, so probably makes no difference which split you try
to bring up or down. Since 88s are much more common, I'd go with
that. Using high-side LO will allow the LO chain to easily reach 434 with
little if any mods. For optimum RX you will need to modify the front-end
helicals. I put a 450-470 Mastr II RX on 422 with no mods at all. It does
work & everything tunes up but the sensitivity is about 6 dB off of where
it should be, probably due to the front-end helicals being lossier since
they're not optimized for that band.
Bob NO6B
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