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[Amps] Re: Ameritron 811

To: <amps@contesting.com>
Subject: [Amps] Re: Ameritron 811
From: "Eric Dobrowansky" <kk2ed@comcast.net>
Reply-to: Eric Dobrowansky <kk2ed@comcast.net>
Date: Mon, 3 Jan 2005 14:21:18 -0500
List-post: <mailto:amps@contesting.com>
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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