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4CX5000A
My name is Onno de Vries and i'm living in the Netherland and building
big amps is my hobby. I just bought a 4CX 5000A on a radio market here for a good price (180 Euro) including socket. Becourse the price was so good i took the challenge to build a 88-108 Mhz final from it. After some experimenting i found out that the anode resonator is a bit of a problem course of the high cappacity of the tube. I try to do it with a double output coil (together Almost a half wave) wich you see in manny designs for 144 Mhz amateur amps using for example the russian tube GU84. This works but it has a terrible efficiency,about 25% with the 4CX5000a tube. I hope somebody can give me some advice about how to design tank circuit with a high efficiecy. Greetings..........Onno. |
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Steveo wrote: (gw) wrote: this ng is on akc lockdown until further notice...... Says the cock sucker at Ella and 610. Steveo, you're the only cocksucker here, too dumb to learn Morse Code. Now crawl back into that shack and have mama bring you another plate of warm noodles! |
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medina_mopo wrote:
Steveo wrote: (gw) wrote: this ng is on akc lockdown until further notice...... Says the cock sucker at Ella and 610. Steveo, you're the only cocksucker here, too dumb to learn Morse Code. Now crawl back into that shack and have mama bring you another plate of warm noodles! Oh yesterday it was theory, today it's CW. Make up your over-medicated mind. medina_mopo wrote: Regarding Effexor XR.... 1) Does the excess sweating ever go away ? 2) Does the constipation ever go away, or is it a continual necessity to ingest fiber products and stool softeners ? I'm a hypocondriac as well as a depressive !! -- A strong positive mental attitude will create more miracles than any wonder drug. |
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