Have you checked the output power on another meter seperate from the one
in the HF2500E?
If every thing looks OK with the exception of the output power there's a
good chance the problem lies with the sampling network. OTOH a
discolored tube doesn't sound good. Discolored, how?
73
Roger (K8RI)
Joe Barnes wrote:
> 2 questions about my Commander HF2500E,
>
> 1- does anyone have any experience changing out the noisy open frame relay
> and replacing it with a vacuum relay?
>
> 2- tonight when I was tuning up on 10 meters for the first time in a long
> time I noticed the SWR went way up on the beam. I lowered the drive to see if
> it was just some condensation or something like that in the feed line
> fittings, however something in the amp made a frying sound and the gain on
> the amp went to about 3db. One of the tubes is discolored, the plate voltage
> is normal. The plate current looks to be about right when I key the amp
> however it just isn't making any power.
> It should make way more power than this even on one tube.
>
> Any help would be greatly appreciated.
>
> 73, Joe N4JBK
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