[Amps] working backwards to setup tank

[PA3DUV]

Is the MFJ analyzer still ok?
Mine went bust after 3 months, could not handle strong RF radiation even
when off and not coupled to any circuit.
I trashed it and purchased a Palstar ZM30. In use now for 2 years, no
problems.
Cheers, Dick
PA3DUV


----- Original Message ----- 
From: "Partain, Chuck" <Chuck_Partain at maxtor.com>
To: <amps at contesting.com>
Sent: Tuesday, April 18, 2006 11:21 PM
Subject: [Amps] working backwards to setup tank


> in ref to my gu-84b based hf amp
>
> I set this tank circuit up and tuned at 7.250mhz, came up with a beautiful 
> output
> then tried to do the reverse check. I put a 2k resistor from the plate to 
> ground, hooked
> the MFJ analizer up using the settings previously obtained and for th e 
> life of me cannot find
> a good resistive value to make the swr analizer 1:1 swr or close. I used a 
> 15k pot and even went SLOWLY
> one end to the other and best I see is 3 to one!!! what am I doing wrong?? 
> I used a 2k load to get CLOSE
> to where I want to set the plate and load caps and the inductance was 
> setup using a formula with 2100 ohms
> plate reactance. Once running, I went to 500 watts and am using those 
> settings.
>
> sorry if I am not clear but maybe someone understands my drivel :)
>
> ka1mwp
>
>
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