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For blind ham radio operators <[log in to unmask]>
Date:
Sat, 23 Mar 2013 13:48:18 -0400
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For blind ham radio operators <[log in to unmask]>
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From:
Steve Dresser <[log in to unmask]>
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Howard,

Something doesn't sound quite right about that supply.  Are you sure it's 
putting out the correct voltage?  Also, if those other radios weren't even 
on, maybe you've got some partial shorts in some of your cables.  Either 
that, or you've got some partially open power cables which are causing 
voltage variations.  The bottom line: I don't think you've solved the 
problem yet.

Steve

----- Original Message ----- 
From: "Howard Kaufman" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Saturday, March 23, 2013 00:15
Subject: ts-480


>I thought about what John suggested, so I disconnected the 6 and 2 meter
> radios from the power supply.
> The nuts were cranked down real tight, and the rigs hadn't been turned on.
> What do you know, output power in to the dummy load went up by 8 watts on
> 160.
> I think it went up by about the same on the other bands, but I hadn't
> measured it there first, so its just memory.
> Now we get 51 watts out on 160.
> This got me thinking, 51 watts is half the expected power output.
> Could only 1 output transistor be working on 160?
> Well, on A.M. with that theory we should get 12.5 watts out on 160.
> No we get 25 watts out on A.M.
>
> All tests done with the TW1 in to the internal dummy load on the tuner.
> SWR 1.2/1 on the meter.
> Now how to power the other radios?
>
> H T Kaufman MSW LCSW
> Adaptive Technology Instructor
> 

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