[Hammarlund] NOISY FRONT END TUBES

[wq3x at epix.net]

I believe the Collins Compendium is only available from the publisher  
of Electric Radio. Beware though because many of the mods are taken  
from old ham magazines and are very outdated and may or may not work.  
Some of them are also real irreversible butcher jobs before people  
cared much about collectability.

Personally I would not put much faith in anything in there but it is  
interesting reading none the less.

Russ WQ3X