[TenTec] Omni VI and power supply occilation???

[c-hawley@uiuc.edu]

That's what I was thinking. Short of putting a recording 
oscilloscope on the supply leads, I would buy 
their "official supply" and run it that way after it's 
fixed. Then you will have sorted out the excuses from the 
problems.
I run mine with an Astron for years. No problems.
Chuck, KE9UW

---- Original message ----
>Date: Tue, 19 Apr 2005 17:01:06 GMT
>From: "Steve Ellington" <n4lq at iglou.com>  
>Subject: Re: [TenTec] Omni VI and power supply 
occilation???  
>To: "tentec at contesting.com" <tentec at contesting.com>
>
>Looks like you're getting plenty of feedback concerning 
that oscillation. My first thought was "what bloney!" Then I 
realized I had misspelled bologna. Really, when it comes 
right down to it....You can't prove or disprove any of this 
power supply theory without it costing you another trip to 
TenTec! I mean,,,are you going to get that VI fixed and hook 
it back up to that same system just to see if it blows up 
again? I think not! So then are you going to hook it up to 
another supply for testing and run it for a few days and 
THEN hook it back up to the other supply just to see what 
happens? Again, I think not. I think you're stuck. TenTec 
will never "approve" your power supply but they will 
continue to blame it for you trouble and maybe, just maybe 
there is some incompatability going on here. Who knows...Too 
expensive to find out!
>
>Steve N4LQ
>
>-----Original Message-----
>From: denton <denton at oregontrail.net>
>Date: Sat, 9 Apr 2005 08:14:41 -0700
>To: Discussion of Ten-Tec Equipment <tentec at contesting.com>
>Subject: [TenTec] Omni VI and power supply occilation???
>
>I recently purchased a used Omni VI that quit transmitting, 
sent it in to TT 
>for repair and alingment. TT replaced the finals and some 
other work...
>I recieved the repaired Omni yesterday and wasted no time 
getting back on 
>the air.
>This morning....no rf out AGAIN!!! Exact same sympthons as 
before.
>I made a call to the TT repair department, and they said 
since I run a 
>homebrew power supply, I may have an ocillation from the 
power supply that 
>is destroying the finals in the Omni.
>What ocillation??
>I have used this power supply for years. It is currently 
feeding an FT 990 
>and uhf/vhf radio without problems. The power supply has 
fed various TT hf 
>rigs thru the years without problem. Is there something 
unique about an Omni 
>that will not allow it to be used in my station on the 
existing power 
>supply??
>The power supply is currently hooked up to a pair of 
absorption mat deep 
>cycle batteries with a blocking diode between the B+ and 
the batteries. It 
>has been used this way for quite some time without problem, 
and the power 
>supply alone is capable of 35 amps continous all day long.
>TT also tried to tell me this morning that I may have to 
run the Omni, when 
>it gets back from being repaired a second time, on a 
separate power supply 
>that will shut down when it detects ocillation.
>Anyone run across this before...thanks....