[Amps] gs35b on hf problem .

[RICHARD GEORGE]

Sounds like the old plate to grid short have seen this several times in new tubes even after so called burn in. Don't forget 2 things they are old and they are Russian surplus.


K6KWQ Dick "12 Volt radios are for wimps, real radios can kill you" Still can't make it go QRO with "More Power"
  ----- Original Message ----- 
  From: Alek Petkovic<mailto:vk6apk at eon.net.au> 
  To: Carlo Houben<mailto:carlo.houben1 at pandora.be> ; Amps at contesting.com<mailto:Amps at contesting.com> 
  Sent: Thursday, November 10, 2005 2:57 PM
  Subject: Re: [Amps] gs35b on hf problem .


  Do you think you may have actually had a glitch? Hopefully, you cooked the 
  tube as recommended before you applied hv.

  73, Alek
  VK6APK

  At 05:43 AM 11/11/2005, Carlo Houben wrote:
  >Hi , i am building a hf amp around a gs35b (new old stock ) in a GG 
  >configuration
  >g3sek triodeboard for control .
  >HV 3300V no load .
  >The following is my problem :
  >1/  My glitch resistor  33 ohm  17 w passed out by measuring  zero signal 
  >anode current .
  >first it was 20Ma and after i put the bias voltage to around 29 V it was 
  >100 Ma .
  >but after 3 times ptt the glitch resitor past out .
  >annyone an idea where i have to look for .
  >Thanks in advance .
  >73
  >ON4BR
  >
  >_______________________________________________
  >Amps mailing list
  >Amps at contesting.com
  >http://lists.contesting.com/mailman/listinfo/amps

  http://www.qrz.com/vk6apk<http://www.qrz.com/vk6apk> 

  _______________________________________________
  Amps mailing list
  Amps at contesting.com<mailto:Amps at contesting.com>
  http://lists.contesting.com/mailman/listinfo/amps<http://lists.contestingcom/mailman/listinfo/amps>