[Motorola] MSR2000 Questions... One Solved, One To Go!

KBØNLY kb0nly at mchsi.com
Sun Aug 30 21:55:51 EDT 2009


Hmm, that might be it.. I will pull the R1 Audio board and check that Mute 
line.. Standby!

Scott


----- Original Message ----- 
From: "Barry Tuttleman" <bdtuttleman at att.net>
To: "Discussion of equipment manufactured by Motorola" 
<motorola at mailman.qth.net>
Sent: Sunday, August 30, 2009 8:37 PM
Subject: Re: [Motorola] MSR2000 Questions... One Solved, One To Go!


>i have the manual in front of me, but i am definitely not familiar w/ this 
>unit; i'm looking at R1 Audio & Squelch Modules, and under section 2.4 
>(Audio Amplifier Circuit) it says:
>
> Amplifier U4B provides the necessary drive to the audio power amplifier. 
> Frequency response shaping is provided by C12 & R20.  Limit adjust R18 is 
> adjusted to limit maximum audio power output to 1 watt.  Drive to the 
> power amplifier is first routed through audio mute gate U4B and volume 
> control R25.  U4B mutes the speaker audio during a MIC PTT signal.
>
> is this what you're looking for?
>
> tnx,
> barry
> carson city, nv
>
>
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