[Amps] rf choke on output

[Vic Rosenthal]

Partain, Chuck wrote:
> I read some info about the rf choke on the output of the amps to work in case the blocking cap fails.
> 
> I see different values listed plus I read in these archives that one can be made from #24 wire???
> 
> can someone shed a little more light on this for me as I do not have one installed...YET!
> 
> I see some call for a z-50???

A Z-50 is 7 uh.  This would be suitable for a VHF amplifier, as it would
have a reactance of about 80 ohms at 1.8 MHz.  Many amplifiers have
pie-wound 1 or 2 mh chokes in this position; however, since the type of
chokes used are often rated at 300 ma, they would possibly burn out
before blowing a fuse if the blocking capacitor fails.
-- 
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco