I am looking for a schematic of a push pull tetrode amp. Any ideas? Thanks, Charlie _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/m
Go buy a big, empty hard drive and go here.... http://www.pmillett.com/tubebooks/technical_books_online.htm Mouse down to "Radio" 1930's, 40's 50's ARRL Handbooks, Pre Bill Orr "West Coast" handbooks
The QRP rig on page 644 of the 1959,"The Radio Handbook" (Orr) might be a start. Bill didn't mess around.... Called Eimac, one day, in the 70's, he answered the phone. Thanks. My wife is happy for th
Charlie, Under the heading of For What it's Worth I too am building a push-pull amp (4CX1500B). Basically I'm using Rich's single ended broadband input (4:1 balun xfmr terminated in 200 ohms, 100 eit
Brad et al Thanks for the replies. Lessons learned: 1) A Startpage search is not a Google search!!! 2) This book link is a goldmine: http://www.pmillett.com/tubebooks/technical_books_online.htm 3) I
Why would you want to build a push pull amplifier? Single ended is much simpler. 73 Gary K4FMX _______________________________________________ Amps mailing list Amps@contesting.com http://lists.conte
My question too. Don't complicate your life into a divorce.... 73 Hardy N7RT Why would you want to build a push pull amplifier? Single ended is much simpler. 73 Gary K4FMX ___________________________
Push pull doesn't really buy you anything other than reduced 2nd harmonics, which isn't a problem as the tank circuit will take care of that for ham purposes. It is sometimes used on higher frequenci
Class B is More linear than what? You really don't want to run a pair of 4CX1500 in class B at RF. Less 2nd harmonic content at the output with push pull but not less IM products. 73 Gary K4FMX _____
The 4CX1500b is designed to be exceptionally clean in class AB1. I don't know if anything significant is to be gained by operating class A as a previous poster suggested. Unless you need a shack heat
I'm not sure the gentlemen's value assessment on the amps various attributes (other than the focus on clean) - but there is definitely merit to having done something uncommon - just for the sake of d
Quoting Vic Rosenthal <k2vco.vic@gmail.com>: I also don't understand why push-pull is so attractive. The easiest way to get an unbalanced output is to use link coupling as shown in the old handbooks.
Push pull doesn't really buy you anything other than reduced 2nd harmonics, which isn't a problem as the tank circuit will take care of that for ham purposes. It is sometimes used on higher frequenc
I had an 10" x 10" leaded glass window in my 4PR-1000A homebrew just so I could watch the glow. 73, Gary KA1J -- This email is free from viruses and malware because avast! Antivirus protection is act
Push pull and class B operation are two different things. You can not run a lower idle current just because the tubes are in push pull. You will get the same distortion products as if they were opera
Which Japanese HAM transceiver is using LDMOS final transistors? And all I know without the "A" button are push-pull class AB. 73 Peter Every 100 Watt Japanese HAM transceiver that I have looked at e
Which Japanese HAM transceiver is using LDMOS final transistors? "the famous orange button puts the more expensive and newer model Yaesu radios into Class A." FT-1000Mark 5 FTDX-5000M and perhaps mo
Isn't class A idle current max (tube dissipation) with max signal giving minimum dissipation? (The tube is never driven "into" cut off) Class B is at cutoff while class C is deep into cutoff?. 73 Rog
Isn't class A idle current max (tube dissipation) with max signal giving minimum dissipation? (The tube is never driven "into" cut off) Class B is at cutoff while class C is deep into cutoff? No, wi
I think this thread is old, but have been busy commissioning a new HPA, another pair of Diacrodes (tetrodes) at 200 MHz, class B. Its working now, has consumed me since February, the installation and