Mike, the Delta IIs were (are?) notorious from having issues on the VCO
boards. I bought mine new and had to send it back a few times. After the
first Tentec did the repair work - no charge. It seems that there were
surface mounted gizmos and they had issues during production.
That exact problem 21 Mhz was the same one that I had. so check those
components on that board. (I say that but have never had the gumption to
unpack those boards for a look-see.)
Kris KM2Km
----- Original Message -----
From: "Mike Bryce" <prosolar@sssnet.com>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Sunday, July 22, 2012 2:56 PM
Subject: [TenTec] delta II -- a few bugs
boys and girls,
since the discussion has been with supply of obsolete parts, I have a
delta II that is sitting on my bench. It's almost fixed.
The receiver is now working, I'm getting RF to the antenna, too
but, it won't receive or transmit past 21 mhz. The fourth VCO won't work.
The control voltage is there from the micro processor, but there's nothing
coming out of the forth VCO.
So, before I rip that PCB out of the chassis and unsolder the VCO box, am
I overlooking something simple?
I'm open to suggestions
mike, wb8vge
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