Anthony,
I don't have any, but I once did face the same situation with a Globe
Champion. In my case I used a pair of 4-65's which fit into the same socket
as the 9909's. You have to rewire the socket, and add two plate cap's. My
installation went wrong a little because I used the filament 12vac for the
9909's, and seriesed up the 4-65 filaments. This worked, but introduced a
low level 60 hertz modulation. Other than that the rig worked very well, and
I had the same power in / power out ratio from 160 through 10 meters. If I
had to do this over again, I would use a separate filament transformer with
a center tap for the 4-65's.
http://www.mif.pg.gda.pl/homepages/frank/sheets/049/4/4-65A.pdf
I recall discussing this with Hoisy w4cjl, and he had replaced the two
9909's with a single 7094. I am not sure about what he did with the filament
situation. His approach had the appeal of using a single indirectly heated
power tube that should be a much easier conversion. I have some 7094's that
I would be willing to trade..
http://www.mif.pg.gda.pl/homepages/frank/sheets/049/7/7094.pdf
Interestingly, with the 4-65's I once put the B+ up to about 1500 (from
~
1000) and the dang thing woke up and really put out. I can't remember the
specifics, but it was something over 300 watts out without any red at all in
the 4-65's. The modulator couldn't handle that with 809's, but could with
808's and some audio driver mods.
You might also look at the Foreign LS50:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2589506352&category=14947
http://tdsl.duncanamps.com/sheets/ls50/ls50_1.gif
http://tdsl.duncanamps.com/sheets/ls50/ls50_2.gif
http://tdsl.duncanamps.com/sheets/ls50/ls50_3.gif
http://tdsl.duncanamps.com/sheets/ls50/ls50_1g.gif
http://tdsl.duncanamps.com/sheets/ls50/ls50_2g.gif
http://tdsl.duncanamps.com/sheets/ls50/ls50_3g.gif
Regards,
Jim candela
WD5JKO
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Anthony W. DePrato
Sent: Sunday, January 11, 2004 8:52 PM
To: [email protected]
Cc: [EMAIL PROTECTED]; [EMAIL PROTECTED]
Subject: [AMRadio] need AX 9909's
Subject says it all. looking for full output and even a couple weak
ones. can not recall the 86 series number on them.
73 Tony wa4jqs
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