[Amps] sb-220 non uniform grid current ??

R.Measures r at somis.org
Thu Feb 26 07:02:49 EST 2004



>In a message dated 2/26/04 12:50:34 AM Eastern Standard Time, 
>dansawyer at earthlink.net writes:
>
>
>> . Is it possible the high grid current readings are a result of 
>> poor tuning skill on my part??
>> 
>> 
>
>I was going to mention that from the beginning.  Unfortunately, many do NOT 
>know the correct way to load an amplifier especially if its your first one 
>you 
>have owned.  Good Luck

**  Luck is not of any value.  Knowledge is.  To tune up a g-g amp, apply 
100% of drive, preferably pulsed at 20 - 30 pps - unless one is tuning an 
amp with a 2500w HV-PS  (Henry 3KA), and Tune/Load for maximum PEP out.  
If this is done, grid-current will be reasonable because most of the 
electrons will be going into the antenna instead of into the grid.  .  . 
>


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