[Johnson] Invader 200 Finals ??

[David C. Hallam]

The Invader 200 with put out a solid 120/125W on all bands except 10 
where it may drop to to 110W.  6146's or 6146A's are OK to mix but not 
6146B or 6146W.

Check your power supply voltages.  If filter capacitors are original, 
they should be replaced before going forward.  I just went trough where 
a bad filter capacitor in the 330V supply caused me no end of problems

The 6CX8 mixer is a finicky thing and you may have low injection voltages.

Other than that you may just need a general alignment.

David
KC2JD/4

Glen Zook wrote:
> NEVER mix a 6146 or 6146A/8298 with a 6146B/8298A.  They are completely different tubes and mixing them will almost always cause problems.
> 
> The 6146B/8298A can cause problems in many units that were designed for the earlier versions.  I would go with the 6146A/8298 or 6293 in your transmitter.  Remember that the 6146W tubes with a code date of the 2nd half of 1964 and later are going to be 6146B/8298A and not the 6146A/8298 equivalents of the 6146W tubes before that date.
> 
> For the article on the 6146 family of tubes that was in Electric Radio a while back, and which has been reprinted in various other publications, go to
> 
> http://k9sth.com/uploads/The_6146_Family_of_Tubes_1.pdf
> 
> Glen, K9STH
> 
> Website:  http://k9sth.com
> 
> 
> --- On Tue, 4/14/09, Richard W. Solomon <w1ksz at earthlink.net> wrote:
> 
> Is there a version of the 6146 that is better to use in the Invader ? This poor old puppie I picked up on the "Evil Empire" has one 6146B and one 6146A. Only getting about 55 watts out on CW. seems a tad low. And mixing tube types doesn't look good.
> 
> 
>       
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