[AMRadio] Pinout for 4CX300A's??? help?

[John E. Coleman]

I used those once for modulators and put them into standard 8 pin base
plugs that were broken 6SN7s.  I wrapped small wire around the tabs
weaving them back and forth with a twist and solder connection then down
the pin of the old 6SN7 base.  They worked great and as I remember the
fils were not connected to the cathode and were on the bottom.

John, WA5BXO

-----Original Message-----
From: amradio-admin at mailman.qth.net
[mailto:amradio-admin at mailman.qth.net] On Behalf Of Vince Werber
Sent: Saturday, September 28, 2002 7:18 PM
To: amradio at mailman.qth.net
Subject: [AMRadio] Pinout for 4CX300A's??? help?

Hi all...

I can't seem to find the common 4CX300A pinouts in any of my tube
manuals...

is is (from the top down);

Plate
Screen grid
Grid
Cathode
Filament
Filament

OR
Plate
Screen grid
Grid
Cathode/filament
Filament

?????????????????

If I remember right it is the first case...
I'm almost sure but...

I've got three of the new with the sockets  Eimac jobs...

All I'm looking for is 'reassurance' :-)

73
Vince
ka1iic
p.s. I remember the fiament is 6.0 and not 6.3 volts... man it's a beach
getting old ehhh????  :-)


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