Hello Luis,
there is no need for class B when using DFCW. As it is a kind of FSK it can be
used in class C (or D or E).
73, Rik ON7YD - OR7T
________________________________________
Van: [email protected] <[email protected]>
namens VIGILANT Luis Fernández <[email protected]>
Verzonden: dinsdag 13 maart 2018 11:28
Aan: [email protected]
Onderwerp: RE: LF: LU1DOW soon in MF/LF
Hi Chris, LF
Oscar answered the question. I'll try to translate, but can't promise not to
make a mistake in tube terminology :-)
He is not using filament choke as this is a direct heating tethrode. So the
midpoint of the filament transformer secondary is connected to ground
The driving is to the grid with a tuned circuit. It works in C class for QRSS
and B Class for DFCW. And YES, this a dangerous high voltage bricolage
and a waste of energy. Just the filament is sucking 35.5 Amps :-O
Oscar plans to test first single carrier in LF with LU8YD at 1000Km first to
check if all is going as in previous tests some time ago. After that he will
switch
to MF and test again
73 de Luis
EA5DOM
|
