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[AMPS] Any Ideas

To: <amps@contesting.com>
Subject: [AMPS] Any Ideas
From: jono@enteract.com (Jon Ogden)
Date: Mon, 5 Oct 98 22:23:14 -0000
>Finally got it going on 160, 80 , and 40 meters last December.  When
>building the input coil, I never put a tap for 20 meters as I never thought
>I would use it on 20 meters.  It put out about 800 to 900 watts on 160, 80,
>and 40 meters.  I used it on 20 meters running it through the 40 meter
>input with a tuner.  About 500 watts out like that.

First of all, the 4-1000 should put out much more power than what you are 
getting.  I am assuming you are driving it with about 100 watts.

I agree with Rich, AG6K, in that you need seperate pi-networks for each 
band in the GG configuration.  While I think I've seen circuits that use 
a single coil with different taps, I think you'll have much better luck 
with seperate networks optimized for each band.


The 4-1000 should put out about 1200 watts with 100 watts of drive.  This 
is especially true on the lower bands.  In fact, if you run a high plate 
voltage (>5 KV) you should get over 1500 watts on the low bands.  My 
4-1000 (before I ripped it apart) would put out about 1800 watts with 100 
watts of drive on 80 meters.  I was running a plate voltage of 6 KV.

Something seems very much amiss in your circuit if you are getting no 
power out.  Double check everything and make sure it's all hooked up 
correctly.

I don't have a lot of test equipment either.  In fact, less than you.  So 
it can be done.  And BTW, I would never measure impedance with an Ohmeter 
on the tube when voltage is applied.

73,

Jon
KE9NA


-------------------------------------
Jon Ogden
KE9NA

http://www.qsl.net/ke9na


"A life lived in fear is a life half lived."


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