[ForSale-Swap] 4D21

[Rick Brashear]

I am looking for a pair of 4D21 / 4-125A tetrodes for test purposes.  
Anything that has a good filament and a bit of emission will be fine.  I 
am converting to 75 meters and testing a RF deck , so I don't want to 
chance blowing a pair of good ones.  I'll need those too once completed, 
but for now I just need something for test purposes.  Please, contact me 
at rickbras at airmail.net if you have a suitable candidate for sale or trade.
Thanks,
Rick/K5IZ