Ah, there is a great Spanish saying that expresses just what Jim is
describing, "Zapatero sus Zapatos" - A cobbler should focus on shoes and not
get involved with other "Stuff." I think that saying came before Adam
Smith's idea of specialization and comparative advantage!
One of the TenTec fellows explained that on a given board I could find the
place that I was looking for on my Delta II. Being a brave Sociologist I
took off the cover to give it a try. One look at the layers and I decided
to keep my eyes on my own shoes!
Kris KM2KM
MERSCHROD
123 Warren Road
Ithaca, NY 14850
Skype: Merschrod
607 257-1734
-----Original Message-----
From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of Jim Allen
Sent: Monday, August 18, 2014 3:42 PM
To: k9yc@arrl.net; Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] 160 Meter Problem
Jim, the world looks a lot different to some of us than it does to you.
I'm not an electronics tech, or trained or experienced in this stuff. You
have some considerable experience and expertise in electronics, understand
how things work, etc. I don't. I came to realize, in nearly 40 years of
practicing law and running an investment company, that nothing beats knowing
what you are doing.
I say "trepidation" because there is seared into my consciousness the time
many years ago I decided to change the oil on my airplane. I saw an article
in some pilot mag about how simple it was, so why not? I spent most of the
day out there, ending up looking like Little Black Sambo, the area was
covered with oil and it took the A&P nearly 3 days to get the engine running
right again. I am not mechanically inclined, completely inexperienced, I
didn't know what I was doing, and the engine was different than the one in
the article in ways I could not hope to account for on my own.
I say "trepidation" because Mike advised to look at the mixer board 81595,
and I can't see that, top or bottom. That's a problem. It's not in plain
view. If the guy on the bench in Sevierville does this, he probably knows
where that board is, knows the easy way to get to it, has the equipment to
measure what it is doing, and if he breaks something, they have to fix it
for free. If I break it, I have to pay even more to fix the problem and
what all I broke.
BTW, I was running it with the power backed off, to 5 watts, both last night
and today. The SWR was not high, or at least it didn't matter because there
was never any output measurable. Had there been even .3 watt of output, the
AH-4 would have done a match, just like it did when I used the 706MKIIG. We
know it wasn't an SWR/matching problem with the antenna because I replicated
the exact thing with the dummy load this morning.
I bought this radio a few months ago. It seems fine but AFAIK has not been
tested as up to factory specs. It is troubling to see low output on 30
meters as well, so we'll have them look into all those mysteries.
73 de W6OGC Jim Allen
On Mon, Aug 18, 2014 at 1:28 PM, Jim Brown <k9yc@audiosystemsgroup.com>
wrote:
> On Mon,8/18/2014 11:14 AM, Jim Allen wrote:
>
>> I removed the covers top and bottom but find no 81595 mixer board. I
>> did find what appears to be connector 82 on the logic board and did
>> "remove and plug [it] back in" with great trepidation.
>>
>
> Why trepidation? It's common for connector contacts to oxidize or
> become loose over the years. Disconnecting and reconnecting one or
> more times simply scrapes a bit of the oxidation off. Just be careful
> to remove and re-connect them without bending contacts, and lined up
> correctly (not one row off, for example). And do this for ALL the
connectors.
>
> Another thing I would try is to back off the power a lot (5-10W) and
> see if you get anything out. If the SWR is very high at the rig, the
> TX may go into protect mode, especially at full power.
>
>
> I think this may be a job for Sevierville.
>>
>
> Why? It's probably one of the first things the guy on the bench is
> going to do, and I'll bet that you work a lot cheaper than he does,
> especially by the time Paul Clinton is done with you. If these simple
> things don't fix it, THEN send it to them.
>
> 73, Jim K9YC
>
>
> _______________________________________________
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> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>
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