[Milsurplus] headset for bc-221 frequency meter

[WA5CAB at cs.com]

Hutch,

P-18 and P-20 are both 24,000 ohm.  Some BC-221 models were issued with the 
8,000 ohm HS-23 plus CD-307,-A.  Later production models were issued with HS-30 
and long Hi-Z cord CD-605 (8,000 ohm).  

The P-18 and P-20 are pretty scarce.  The CD-605 is scarce but you can build 
one from a CD-604 and CD-307 which are not so scarce.  The HS-23 is probably 
the most comfortable to wear. 

In a message dated 10/16/2007 10:39:50 AM Central Daylight Time, 
olegerityincj at austin.rr.com writes: 
> Any one know what impedance is needed for a head set / or speaker for an 
> LM- series or BC-221 series frequency meter?
> P-18 P-20

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