[Boatanchors] Vintage Headset Impedance

Thu, 29 Apr 2004 13:10:58 EDT

Bill,

P-18 24,000
P-20 24,000

Main difference between the two is the headband.  Both use two of the R-2-A 
permanent magnet type receivers.

BTW, HS-23 (8,000 ohms) also works well.  Mid-war on, sets were issued with 
Headset HS-30.  Cord Hi-Z or Lo-Z) issued with HS-30 depended on BC-221 model.  
Later models differed in that they were set up for 600 ohm headsets, not the 
Hi-Z ones.  HS-33 works well with them.  HS-30 is an ear-plug type headset and 
not (to me anyway) as comfortable to wear as the earphone types with rubber 
or chamois ear cups.

In a message dated 4/29/2004 12:01:39 PM Central Daylight Time, 
[email protected] writes: 
Can anyone tell me what the impedance of a P-18 or P-20 military headset that 
is used with a BC-221 frequency meter might be? Also was wondering if the 
P-18 or P-20 was a crystal headphone?  Thanks, Bill, ab0zz

73
Robert Downs - Houston
<http://www.wa5cab.com> (Web Store)
<[email protected]> (Primary email)
<[email protected]> (Backup email)

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