[AMPS] L4B parasitic reistors
Tue, 18 Apr 2000 08:04:54 -0700
And I thought this would be a quiet week..........
----- Original Message -----
From: measures <firstname.lastname@example.org>
To: Kevin P <email@example.com>; AMPS <firstname.lastname@example.org>
Sent: Tuesday, April 18, 2000 8:58 AM
Subject: Re: [AMPS] L4B parasitic reistors
> >Hi All,
> >I picked up a very nice L4B the other day that works FB (only used it on
> >40/80m though). When I took it apart to clean the tubes and dust off the
> >chassis I noticed that two of the three 15ohm 2watt resistors on the each
> >suppressor was completely burned through in half. Interstingly, one
> >resistor out of the three on each one looks like it never got hot at all.
> >I am going to replace all the resisters but I was wondering why two out
> >the three resistors are almost vaporized while one is intact. I dont see
> >any sighs of arcing or overheating anywhere else in the amp - it looks
> >like brand new otherwise.
> The only possible way to toast suppressor resistors on 40m/80m is to have
> an intermittent VHF oscillation.
> When R-supp burns out, it is not because the resistors were defective.
> later, Kevin
> - Rich..., 805.386.3734, www.vcnet.com/measures.
> FAQ on WWW: http://www.contesting.com/ampsfaq.html
> Submissions: email@example.com
> Administrative requests: amps-REQUEST@contesting.com
> Problems: firstname.lastname@example.org
> Search: http://www.contesting.com/km9p/search.htm
FAQ on WWW: http://www.contesting.com/ampsfaq.html
Administrative requests: amps-REQUEST@contesting.com