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Re: [Amps] Tuning a 30L-1

To: Vic Rosenthal <vic@rakefet.com>, Dan Levin <djl@andlev.com>
Subject: Re: [Amps] Tuning a 30L-1
From: Pete Smith <n4zr@contesting.com>
Date: Sat, 01 Nov 2003 05:08:40 -0500
List-post: <mailto:amps@contesting.com>
At 07:59 AM 10/31/03 -0800, Vic Rosenthal wrote:
Although I don't have a 30L-1, it's common that you get better IMD performance from a gg amplifier when it is loaded slightly more heavily than the point of maximum output. So what you see makes sense, and if you are operating SSB it would be a good idea to tune according to the instructions. Grid current will increase in the more lightly loaded condition, although I don't think this would be a problem for the 811As.

The 30L-1 I used to use at a club station had one of those Collins zero-centered tuning schemes, if I remember correctly. Perhaps not all of them had it?



73, Pete N4ZR The World HF Contest Station Database was updated October 29. 2469 stations are listed -- 29 new and over 100 updated. Are you current? www.pvrc.org/wcsd/wcsdsearch.htm



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