I have a UHF Mastr Pro receiver on a repeater that had the same problem. The
audio off the terminal strip is very bassy. I solved the problem by taking
the audio from the volume pot.
Mike N6KYD
----- Original Message -----
From: "Bob Dengler" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Thursday, July 29, 2004 10:13 AM
Subject: Re: [Repeater-Builder] Re: Question on 220 GE master pro
> At 7/29/2004 09:01 AM, you wrote:
> > > "Jed Barton" <[EMAIL PROTECTED]> wrote:
> > > Hey guys.
> > > Just finished a major overhall on our club repeater.
> > > The receiver is working fine, it's a GE master pro.
> > > I've got one issue, the audio is very very basy.
> > > Is there any way to flatten it out and get some more high end audio?
>
> What's your transmitter? Sounds like you have de-emphasized audio feeding
> an FM transmitter.
>
> If that's not the problem, it may be where you're taking the audio from
the
> Mastr Pro RX. As I recall there's two places to get it; one has a rolloff
> around 4 kHz. Not a problem for most people since standard NBFM should
> rolloff at 3 kHz, but if you're going for maximum fidelity you may want to
> find the unfiltered audio point.
>
> > > Anyone had experience working with the master pro on 220?
> > > I discovered one thing, without a preamp she's toast.
> > > It needs a preamp big time.
>
> Even the unmodified Mastr Pros are a bit deaf on UHF (~0.5 uV for 20 dB
> quieting); preamps are required equipment for that RX IMO. If the mod
> wasn't done well, it would be quite deaf. How does it do with the preamp?
>
> Bob NO6B
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> Yahoo! Groups Links
>
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>
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