While beating around in HAM_TECH on Fri 18 Jul 1997, PATRICK GORMLEY said 
this of "6146's":
->> Hi, there!
->>
->> Anyone out there who can tell me if there are any significant
->> differences between the 6146B and the 6146W?
->> Hedding the 6146b is the tube designed for the ts520.
Say what?
->> A couple of years ago, I substituted
 > the 6146b for a set of 6146's in an old heathkit I had which
 > worked but you had to turn the mic gain down because they
 > saturated very easily when driven by a 6cl6.
Maybe so, but the 6146b wasn't designed for one specific rig, anymore than 
the 6146W can be used in military rigs, alone.
As far as I've ever been able to tell, a 6146 is a 6146, is a 6146 - some 
just better than others.
From the 1957 Tube Manual:
Cathode - Volts  Amps
---------------------
6146       6.3    1.25
6883      12.6    0.625
6159      26.5    0.3
Base 7CK
Plate dissapation    25W
Plate Voltage       750V
Screen Dissapation    3W
Screen Voltage      250V
Freq Mc Full Rating  60Mc
Typical Ratings Class AB(2) (for two tubes in push-pull)
Plate -             750V
Screen -            195V
Suppressor -           -
Grid                -50V
Plate Current -  23/220mA
Screen Current -   1/26mA
Grid Current        100mA (peak grid to grid a.f. volts)
Aprox Drive Power     0W
P-P Load              8kOhms
Aprox Power Out     120W
Show me something different for the 6146B
Regards,  Jeff     ka5thb@bigfoot.com
ka5thb@qsl.net      jeff@broadcast.net
Message saved on Fri 18 Jul 1997 at  5:52P with FrontDoor/APX ver. 1.12
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