Thursday noontime, guys:
My discussions with Paul at T-T some time ago, told me NOT to use the 252mo
supply with
the Jupiter or Scout. He said it doesn't keep the voltage about 12.1 VDC.
The 252om is OK for the OMNI-A, B, C, D.
Al Sirois/N1MHC
==============
-----Original Message-----
From: Chris Howard w0ep
Sent: Thursday, February 26, 2015 11:37 AM
To: tentec@contesting.com
Subject: Re: [TenTec] 252mo supply
My bridge rectifier seemed to be ok.
But the big pass transistor was reading dead short
between collector and base.
I replaced that with another 2n3055 that I had on hand.
That seems to have done the trick.
Chris
On 2/9/2015 1:24 PM, Chris Howard w0ep wrote:
Thank you Ralph!
I hooked the Omni up to a Pyramid linear supply
that I have here. I can run up to about 10 watts
and then the voltage sags enough to cause the frequency
to change. So, I am ok if I stick to lower power.
I'm going to dive into the 252mo supply and see
what is what.
Do you think it would be better to get a switching-type
supply? Should I be worried about noise on the power
line?
Chris
On 2/8/2015 9:22 PM, Ralph Arnold wrote:
I had the same problem with my OMNI D the PS is bad mine blew the Bridge
Rectifer and the 3055 Voltage Regulators were leaky I also replaced the
electrolytic cap it was old Now it works like a champ Oh BTW check
output
with a known good DVM and I also Scoped PS for clean power.(no 60 cy
ripple. Im an old USN Aviation Tech KD8BTQ ---Ralph
On Sun, Feb 8, 2015 at 11:41 PM, Chris Howard w0ep <w0ep@w0ep.us> wrote:
I was tuning up the antenna with my Omni-D yesterday
afternoon and everything went completely dead.
I was not high on SWR and not turned up to maximum power.
Turning things off and on I was able to get the power
supply meter light to come on, but nothing on the rig.
I have the light in my SWR meter hooked up to the supply
also, and that is not working. I think the supply has
problems.
-- later --
I jumper the "SW" ports of the connector, plugged in
in the supply and fired it up. Sure enough, the supply
lights up but no output.
Any advice before I dive in?
Chris
w0ep
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