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[aprssig] TNC-x

Wes Johnston wes at johnston.net
Sun Sep 19 02:22:20 UTC 2004


No, actually, collector to emitter.  Prob shoudda done emitter to base as well.... 
Wes
----- Original Message -----
From: <scott at opentrac.org>
Date: Sat, 18 Sep 2004 19:10:20 -0700
To: "'TAPR APRS Mailing List'" <aprssig at lists.tapr.org>
Subject: RE: [aprssig] TNC-x

> Is it installed between the base of the transistor and ground?  That's a
> configuration I've seen in a number of circuits, TT3 included, and I copied
> it in the OpenTracker.  Seems to work fine.  I buy .1uf caps by the
> thousand, now.  =]
> 
> Scott
> N1VG
> 
> -----Original Message-----
> From: aprssig-bounces at lists.tapr.org
> [mailto:aprssig-bounces at lists.tapr.org]On Behalf Of Wes Johnston
> Sent: Saturday, September 18, 2004 6:56 PM
> To: TAPR APRS Mailing List
> Subject: Re: [aprssig] TNC-x
> 
> 
> Well, I found the solution... I moved my .1uF cap from the radio plug
> all the way back to soldering it onto the leads of Q1, the PTT
> transistor.  Working fine now.  Now to get deviation set.
> 
> Wes
> 
> 
> 
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> 





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