When retuning the receiver, and having my volt probe on pin 7, I get no
readings when I adjust c307 or c306. When mentioned to move the oscillator,
this I assumed is retuning of the complete receiver.
Mathew
mch <[EMAIL PROTECTED]> wrote:
That's because the radio has a very tight front end on it. You have to
retune the helicals. Nothing special has to be done with the high side
injection - just the same retuning.
Joe M.
Mathew Quaife wrote:
>
> Ok, gonna sound stupid here. The xtal that originally came with the
> unit was set for normal frequency range. Does everything have to be
> redone when you go with a high side xtal? At this point it will not
> receive even with a 5 watt ht next to it, aside the 0 dBm my service
> monitor gives it.
>
> Mathew
>
> Chuck Kelsey <[EMAIL PROTECTED]> wrote:
>
> You did re-tune the oscillator section, didn't you?
>
> Chuck
> WB2EDV
>
>
>
>
> ----- Original Message -----
> From: Mathew Quaife
> To: [email protected]
> Sent: Monday, January 01, 2007 11:44 AM
> Subject: Re: [Repeater-Builder] Bowmar Crystals
> Ordered, all the RX not working for GE EXEC II
> mobiles
>
> Thanks Chuck, that is what they sent me, so your
> math is just fine. Then there must be something I
> am missing. I can take one of the old xtals and
> they work out just fine, so I know the receivers
> are working. Might I ask what the formula you
> used was? It's been a long time since I have
> calculated a crystal freq. so just need the
> formula configuration.
>
> Mathew
>
> Chuck Kelsey <[EMAIL PROTECTED]> wrote:
>
> If my hasty math is correct:
>
> 144.81 low side = 14.845555
> 144.81 high side = 17.334444
>
> 434.875 low side = 16.39537
> 434.875 high side = 16.521296
>
> Chuck
> WB2EDV
>
> ----- Original Message -----
> From: "n9lv" <[EMAIL PROTECTED]>
> To: <[email protected]>
> Sent: Monday, January 01, 2007 10:40 AM
> Subject: [Repeater-Builder] Bowmar
> Crystals Ordered, all the RX not working
>
> for GE EXEC II mobiles
>
> > Hope someone can help shed some light
> here. I ordered xtals from
> > Bomar (3 week wait) for the GE EXEC II
> mobile radios, 6 for RX for
> > 144.810 and one RX of 434.875, all
> high side injection. None of them
> > are working at all. At the same time I
> ordered tx xtals for the same
> > radio, they all work just fine. What
> might I be missing here, or did
> > they just cut them all wrong.
> >
> > Mathew
> >
> >
> >
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
>
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