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On Sat, 13 Oct 2018 00:32:46 -0000, you wrote:
>Commander HF-2500 amp s/n 443 = $1200 plus shipping
> All band
> this vintage does NOT have grid protection
>
>Commander HF-2500 amp s/n 698 = $1200 plus shipping
> modified to do 40-10m only
> modification will handle RTTY contests on 40m
> this vintage DOES have grid protection
> will include damaged toroid you could refurb for all band
REPLY:
Beware of the HF-2500 in its original UNMODIFIED state. The toroid in
the output tank WILL NOT handle full RTTY power on 160-40 meters, as I
learned twice. I suggest you ask the seller what the modification was
which enables it to do so. Otherwise, you will need ventilation fans
in the shack. :-)
Because of this vulnerability, the manufacturer came out with the
Magnum version, which is preferable if you can find one. They are
rare.
73, Bill W6WRT
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