[TenTec] 252mo supply

[Al Sirois]

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 at 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 at 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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