[Amps] searching for original 4cx1000 qst project info

skipp isaham nospam4me at juno.com
Mon Nov 10 19:21:20 EST 2003


Ralph Emailed me looking for a clue and info a QST 
Amp project using the 4cx1000 as described below. 
If any of you recognize this project by date/issue and 
can provide the source info, he and I would appreciate 
it very much. Post your replies here on amps and I'll 
forward it back to Ralph. 

cheers (and thanks)
skipp 
nospam4me at juno.com 

[snip and paste]
Approximately 20 or more years ago an article appeared 
in QST about a final amp that used a 4cx1000. It was built 
by a college professor that taught at New Mexico State in 
Las cruces. (last name began with an "M" and I never 
heard it pronounced so I can't remember it). This amp 
used a 50 ohm passive resistor for the grid circuit and 
had protection from plate current overload--loss of 
bias--over and under screen current and over grid current. 
Best simple system I ever saw. Of course I have lost my 
copy and desperately need the article (with integral circuit 
diagram). I have had difficulty constructing a parasitic 
suppressor that works to my satisfaction so I would like 
comments on a specific fix for this problem. Any help 
will be appreciated--all comments listened to. 
Ralph w5otp.




________________________________________________________________
The best thing to hit the internet in years - Juno SpeedBand!
Surf the web up to FIVE TIMES FASTER!
Only $14.95/ month - visit www.juno.com to sign up today!


More information about the Amps mailing list