> I am currently having fun modifying a CSI 1kW 100MHz fm transmitter for
> 40-80-160m. This TX uses an 8877 in gg. It has a standard, not low
> capacitance, filament transformer, there is NO filament choke, and the
> filament is decoupled to ground. It presumably relies on heater/cathode
> insulation for isolation. It doesn't seem to be particularly good practice
> and I am fitting a choke, but there are dozens of these transmitters out
> there which have been working continuously for decades.
>
> 73 Roger
> VE3ZI
> (In pleasantly cool Northern Ontario)
There are hundreds (perhaps thousands) of Alpha's out there hammering
away. Alpha never used a filament choke in its 8877 amps.
(((73))) from SNOWY Texas!
Phil, K5PC
--
FAQ on WWW: http://www.contesting.com/FAQ/amps
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
|