>Hello all:
>
>Richard escribió:
>
>> >It's also somewhat common for solid-state PAs are unstable running
>> >into narrow filters. Did you try removing the filter between the amp
>> >and the radio?
>> >
>> >It's virtually impossible to be in the amp,
>>
>> ? 813s don't need a VHF suppressor because they have virtually no VHF
>> gain. However, this is undoubtedly not the case for the 8877. The last
>
> I'll ask something not directly related with the main thread. I've seen
>a a friend who made his own amplifier with one 813 (don't laugh, may be
>qrp for you, but for one that is new to this...), getting nearly 450
>watts out in GG. Perhaps a bit high input for this tube.
> But mainly at 80 or 40, and not so frequently in the remaining bands,
>20, 15 and 10, he have had heavy oscillations, traced to be in the
>45..55 MHz region.
45MHz means he has a long wire from the Tune-C to the 813 anode
connection.
- R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K,
www.vcnet.com/measures.
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