[TenTec] 242 VFO Problem...

[Louis Ciotti]

All,

So I took the cover off and was probing around checking connections.  

I took the following data on voltages on the controller board at each
transistor per the instructions.  Mode 3 in the VFO position.

Transistor     |   Collector   |     Base      |     Emitter   |
               |   T   |   R   |   T   |   R   |   T   |   R   |
===============+=======+=======+=======+=======+=======+=======+
Q1             |  0.37 | 13.78 |  0.8  |   0   |   0   |   0   |
Q2             | 13.70 | 0.044 | 0.037 |  0.74 |   0   |   0   |
Q3             | 13.70 | 13.80 |  13.7 |  13.8 |  .221 |   0   |
Q4             | 13.71 | 13.80 | 0.037 |  11.7 | 11.08 |   0   |
Q5             |   0   | 11.09 |   0   |  5.06 |   0   |  4.33 |
Q6             |   0   | 0.021 |   0   | -.035 |   0   |  3.72 |
---------------------------------------------------------------+

It appears as if Some of the Transistors are bad on the Control board.

Anyone have any part numbers for replacements??

Thanks

Lou
KC2RVD


-----Original Message-----
From: tentec-bounces at contesting.com [mailto:tentec-bounces at contesting.com]
On Behalf Of MICHAEL SOUHRADA
Sent: Wednesday, March 26, 2008 1:40 PM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] 242 VFO Problem...

Hi Carl and the group.
I'm the guy that sold the VFO to Lu.
My brain was not in gear and I thought he was setting up a 544
and not a 244 digital readout. I was very disappointed to see his
post yesterday.  
I had a document sheet from TT "Service Note SN-1-540" that
I should have sent along; I did last night and hopefully that will
resolve the problem. There are some jumper modifications on the
244 plug needed. It also covers the 240,241 in addition to the 242,
244 hook up.

If anyone needs this three page document It's available from me
in .pdf form. Not the best quality but understandable. Ask and you
shall receive. 
Also wonder if there is a corresponding sheet for the 244? I don't
need it but would like to add to my manual file just in case.

Mike
Iowa
  ----- Original Message ----- 
  From: Sferic at aol.com<mailto:Sferic at aol.com> 
  To: KC2RVD at arrl.net<mailto:KC2RVD at arrl.net> ;
tentec at contesting.com<mailto:tentec at contesting.com> 
  Sent: Wednesday, March 26, 2008 6:49 AM
  Subject: Re: [TenTec] 242 VFO Problem...


  I recall the early Triton IV's needed an internal mod to work with the
remote 
  VFO. Ten-Tec should have that information. If not, I could probably dig it
up 
  for you.
   
  Carl, K4SEV.



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