[TenTec] Power output question....omni c

Carl Moreschi n4py3 at earthlink.net
Sun Feb 7 12:23:34 EST 2021


What is the voltage inside the radio after the power connector?  It may 
be a volt or 2 lower if the connection is not a good one.  And these 
voltage need to be measure while transmitting full power.

Carl Moreschi N4PY
127 River Moss Way
Hertford, NC 27944
www.n4py.com

On 2/7/2021 12:12 PM, Scott Sheppard wrote:
> Hello everyone
>
> I have been going thru the omni c over the past several days getting it back in shape. It’s running well and my last remaining challenge was the power output.
>
> On most bands I was getting under 50w so figured I may have had a blown final.
>
> Out came the mrf458’s (intact) and replaced with PT9784’s I had on hand...not a lot of difference. I then swapped out the pt3647 devices also located in the final PA with a pair of 2sc2166’s.
>
> I realize the power output specs vary to some degree and have a bit of range, and normallly higher freq will be a bit less.... but I am curious why 40m is now my lowest output...with 13.8 v measured at the radio this is the result:
>
> 160.  65
>
> 80.    85
>
> 40.    75
>
> 30.     80
>
> 20.     95
>
> 15.      80
>
> 28.     65
>
> Any thoughts why 40 is the lowest band?
>
> Greetings from Yukon Territory,
> Scott.  Vy1co
>
>
> Sent from my iPad
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