Re: [TenTec] paragon audio noise in trasmission

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

Sorry about the typo, the reference is U10 in both cases.

Bob
----- Original Message ----- 
From: "Robert & Linda McGraw K4TAX" <RMcGraw@Blomand.Net>
To: "Luca" <ik5tsw@virgilio.it>; "Discussion of Ten-Tec Equipment" 
<tentec@contesting.com>
Sent: Thursday, September 08, 2005 3:32 PM
Subject: Re: [TenTec] paragon audio noise in trasmission


> 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
> >
> >
> > > _______________________________________________
> > _______________________________________________
> > TenTec mailing list
> > TenTec@contesting.com
> > http://lists.contesting.com/mailman/listinfo/tentec
>
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