[Milsurplus] 23D4 Ballast Tube?

[WA5CAB at cs.com]

According to SB 11-17, Electron Tube Supply Data, it was only used in the 
BC-689-A of SCR-518-A-T4, which is an Altimeter Transmitter.

In a message dated 3/24/2007 10:20:39 PM Central Standard Time, 
arc5 at ix.netcom.com writes: 
> Anyone know where the WW-II era 23D4
> ballast tube was used?

Robert Downs - Houston
<http://www.wa5cab.com> (Web Store)
MVPA 9480
<wa5cab at cs.com> (Primary email)
<wa5cab at houston.rr.com> (Backup email)
   
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