Re: [TenTec] paragon audio noise in trasmission

[Robert & Linda McGraw K4TAX <RMcGraw@Blomand.Net>]

Luca:

Check to see that you are getting a mute voltage transition at connector 44 
pin 2 on the IF/AF board. If so then most likely Q12 has failed or D9 is 
shorted thus not allowing muting of the audio output stage U10.   Input 
audio to U1 is supplied via pin 3 of connector 55 and is muted by Q12 
conducting to ground.
Before you dig too deep be sure all the connectors are well seated.  It 
wouldn't hurt to carefully unplug connector 44, 48, 55 and 50 and then 
reconnect just in case there is a dirty contact on the mute or ground lines 
to the AF/IF board.  The current levels are very low  in this circuit and 
thus not enough voltage to create a "punch" through on an oxidized 
connector.
73
Bob, K4TAX


----- Original Message ----- 
From: "Luca" <ik5tsw@virgilio.it>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Thursday, September 08, 2005 2:47 PM
Subject: [TenTec] paragon audio noise in trasmission


> Luca wrote:
>
> > Hi to All
> >
> > I am new member of this very intresting mail list .
> > I have purchase second hand  Paragon 585
> > When trasmitting i have the distorted audio in a speaker ,is a truble ? 
> > Or is normal ?
> > You have a possible remedy ?
> >
> > Sure of your intresting many thanks in anvance
> >
> > 73   Luca
> > _______________________________________________
>
>
>
> Luca:
>
> Just turn down the monitor control on the back panel. This is a voice
> sidetone for checking the speech processor, but it isn't particularly
> useful.
>
>
> 73,
>
> Bob WB2VUF
>
>
>
>
>
> Make sure that the MONITOR level control on the rear panel is turned down.
>
> 73
> Bob, K4TAX
>
> Luca wrote:
>
> Many thanks to all for your answer
>
> In my Paragon the MONITOR LEVEL , AF GAIN  , RF GAIN ore in  max 
> counter-clockwise ad i use the dummy load
> The problem to decrease  if i turned down the RF POWER ad increase in 
> lower band
> I think the   RF retur
>
> Many thanks in advance
>
> Luca  ik5tsw@virgilio.it
>
>
> > _______________________________________________
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