8873

[Paul]

I think you meant the 4CX400

The 4-400 is a glass tetrode. Would require entirely different socket and
filament transformer. 

The 8873 is a much smaller ceramic tube. I doubt that a 4-400 would fit into
the SB230 cabinet.

Paul


-----Original Message-----
From: Heathkit Owners and Collectors List [mailto:HEATH at LISTSERV.TEMPE.GOV]
On Behalf Of William Strong
Sent: Tuesday, January 29, 2008 9:44 AM
To: HEATH at LISTSERV.TEMPE.GOV
Subject: 8873

MARTY 
  CONVERT THE RIG TO USE ANOTHER TUBE 
 INFO :8873--conduction-cooled tetrode, popular in amateur radio linear amps
(Heathkit SB240)--made by Eimac. Suggest retrofit with different tube, such
as SED (C logo) 4CX400A or 4CX800A. The 8874 can also be retrofitted (see
8874).
iS A 4-400 SIMILAR TO 8873? 4-400S ARE  STILL AROUND AND AFFORDABLE. 
       
*OL"BILL

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