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[AMPS] Tuning of amps - 3cx800s,etc..

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Subject: [AMPS] Tuning of amps - 3cx800s,etc..
From: (Mark S Graalman)
Date: Sun, 15 Mar 1998 06:42:03 EST
  Eric, when the loading is increased it results in a
decrease in grid current, a increase in plate current,
and a decrease in power output. The opposite is true
when the loading in decreased. The log indicators
on the front panel of the HF-2500 represent 
capacitance not the level of loading.

Mark  WB8JKR

On Sat, 14 Mar 1998 23:05:20 EST KA2YKC <> writes:
>One question I have been meaning to ask........
>Can someone please clarify "Loading" ??
>When I turn my LOAD counterclockwise (CMDR HF2500),  the grid current 
>quickly with little drop in output pwr (as recommended). Am I 
>increasing or
>decreasing the loading of the antenna ???
>I think I am increasing the loading (even thought the dial is going to 
>lesser #), However, I think I read somewhere (maybe an Ameritron 
>manual) that seemed to contradict this (or their var. cap works in the
>opposite direction - increased loading shows higher dial #) . 
>I interpereted an earlier post as saying not to drop the grid by 
>adjusting the
>load, rather decrease the drive from the exciter. 
>Sometimes I wish I was born 20 years earlier so I could have been 
>taught tubes
>rather than solid state when I was in school .
>Thanks for the free education. 
>73 Eric
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