Hi Bill Take a look in Ham Radio Magazine April 1987, p 63-72. "A three tube 4CX250B linear amplifier" by YU1AW. It's a 2m amplifier. I have a copy of the article that I can copy if you want it. 73 /
Hi all Anyone familiar with this 432MHz amplifier model, built around 1980? The tube is a 3CX1500C7/8938 and it is a stripline type amplifier, similar to the one described by K1FO in the ARRL UHF/SHF
Hi Howard That was a very common tube in Philips radio/TV transmitters in Sweden so they were quite common here also. Philips name is QBL5-3500. The tube is also known as 6076. Here is some info: htt
Hi again Howard I found the page with info about the "Daffy" amps: http://www.pocab.se/amp/g2daf.htm 73 // Einar // SM3MXR -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesti
Hi Steve Expect about 10dB of gain at 3kV, so 13-1400w should be possible with 135watts of drive. 813's can stand a lot of spanking, but I wouldn't use them for longer rtty monologes at that power le
And some hams from your neck of the woods are very fast in judging without necessary information. I feel no responsibility for what other Swedish Hams do or say about G2DAF or other subjects. Do you
I'm not so sure, but I agree that you didn't use THAT four letter word that, although you needed about twentyfive four letter words to write your mail. Your suggestion was tried when constructing the
If so, the G2DAF invention from the fifties or sixties is about as good or bad as the fairly new Kenwood TS2000. 73 Einar // SM3MXR -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps
No I have not measured it. Someone on this list said that the TS2000 has a lousy TX with IMD just a few figures better than 20db below pep. I think the figures came from a British test of the radio.
I don't understand what G2DAF has to do with this? Please explain? The box adds no Shit to the signal .... just a few minutes to much, makes alot of Shit .... Common huh? Einar -- FAQ on WWW: http://
Hi Curt I know a Swedish guy who has made some little box that would do what you ask for. It has independent maximum output adjustment for every HF-band in the FT1000. Hearsay states that it works pe
Hi David (and all) If you already have the 3-phase supply, use it. But I wouldn't do it without at least a small capacitor across the HV. I tried a 3 phase 6-pulse supply without cap a few years back
Hi Mike Siemens RS1026 has the Eimac 5867A as an equivalent. "The 5867A is intended for use in industrial heating applications. The large heat storage capacity of the graphite anode aids in compensat
Hi Mark, try your closest auto repair parts dealer. He should have copper brake pipes in the diameter and length you need. 73 // Einar / SM3MXR -- FAQ on WWW: http://www.contesting.com/ampsfaq.html S
Hi Mark, try HOSCHA in Germany. They make excellent remote switches, able to handle QRO power, well above what you ask for. 73 de Einar // sm3mxr@swipnet.se -- FAQ on WWW: http://www.contesting.com/a
Hi John et all -- On Fri, 23 Oct 1998 17:05:37 +0200 John Fielding <johnf@futurenet.co.za> wrote: That is a very nice tube! Excused for the lack of handles! Quite commonly used among 2m moonbounce op
Hello all I have a HEATHKIT SB-220 and is offered an SB-221. I GUESS they are alot the same (2x3-500Z). I haven't seen it yet and want to know if there is a big difference between the two? Can someon