came from older ham getting out of equipment....
they are Alfred model 502 and model 562
I have another that was part of a 2304 station <not selling>
that showed 200mw output on a bird microwave wattmeter.
make resonable offer, they ARE heavy and are listed
from 2-5 gig outputs ranging from 100-220 mw <on test sheet>
N connector in and out.
<these units are complete with power supply and all, plug in and use>
I also have 3 Thompson-CSF Th3543c TWT, that list from 5.925 to 6.435
1.5 milliwatts in for 10 watts out
33 db gain
These were said to work fine on 5 gig ham band
and have reduced gain on 3 gig ham band <around 20db gain>
they have SMA connectors, and NO power supply.
I also have rectifier tubes, and thousands of others. Guitar amp tubes
are probably spoken for already.....
NO sweep tubes
also I have a limited supply of 381 <2c39> tubes
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see ya on the bands