VK3API > ALL 06.09.13 10:38l 20 Lines 650 Bytes #999 (0) @ WW
BID : 900587VK3API
Read: GUEST
Subj: Re: Radio Power Lead Issues
Path: IZ3LSV<I0OJJ<UA6ADV<GB7CIP<VK3API
Sent: 130906/0329Z @:VK3API.#MEL.VIC.AUS.OC #:62204 [Lilydale] FBB7.00g
From: VK3API@VK3API.#MEL.VIC.AUS.OC
To : ALL@WW
Hi Phil and others
> It was dropping from 13.8V to about 11V
> during TX. The fault turned out to be the fuses having dirty/oxidised
> connections which had built up over time. The fuse-holder has gold contacts
> but the fuses didn't - when cleaned up everything back to normal.
It depends what you consider normal /acceptable. Even a perfect condition
fuse has a voltage drop under full load. As a matter of course I always
bypass the negative (ground) lead fuse and thereby halve the voltage drop.
This works unless there is some weird half rail operation in the radio.
Regards Tony VK3API
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