[Hallicrafters] microphonics

[Walt Cates]

HI John,

I have "heard" (before my time as a tech) that after the war and deep into the 50's that tube quality went down. With out the military paying high dollars for gear and parts the tube makers found it difficult producing a quality product for reasonable price. But here again as you said that was the fault of the tubes and not necessary a design flaw in the rigs.

Best Regards, Walt Cates, WD0GOF, http://www.myhamshack.com/WD0GOF/<http://www.myhamshack.com/WD0GOF/>
A veteran is someone who, at one point in his life, wrote a blank check made payable to 'The  United  States of America' for  an amount of  'up to and including my life.'
  ----- Original Message ----- 
  From: W4AWM at aol.com<mailto:W4AWM at aol.com> 
  To: cateswa at msn.com<mailto:cateswa at msn.com> ; hallicrafters at mailman.qth.net<mailto:hallicrafters at mailman.qth.net> 
  Sent: Sunday, November 20, 2011 9:16 PM
  Subject: Re: [Hallicrafters] microphonics


  Hi Walt,

  My Father bought a brand new S-38 when they hit the market after WW II. It was a "boing machine" right out of the box.  He took it back and got another one in a factory sealed box and the problem was still there in that one, too.  I have had many near new Hallicrafters receivers with the same problem. I believe it was a function of tube problems more than anything else.

  73,

  John,  W4AWM