[Amps] Re: Ameritron 811

[Gary Smith]

RF parts... good stuff, knowledgeable people.
73
Gary
WA6FGI

  ----- Original Message ----- 
  From: Eric Dobrowansky 
  To: amps at contesting.com 
  Sent: Monday, January 03, 2005 11:21 AM
  Subject: [Amps] Re: Ameritron 811


  Most likely the tube in the socket with the blown resistor has developed an 
  internal short. Call Ameritron and ask for replacement tubes if they are 
  under warranty.  I have repaired two 811s where one or two of the 811 tubes 
  have internally shorted, causing the 51 ohm resistors to repeadly fail until 
  the tubes were replaced. There is a high failure rate with the 811 tubes 
  MFJ/Ameritron is supplying with new amplifiers. They appear to be of the 
  cheapest Chinese variety. One owner gave up after two replacement sets from 
  MFJ, and went with a set from RF Parts, and has not had the cover off of the 
  amp since!


  Eric
  KE2D



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