[Milsurplus] WWII-era USN headphone question

[Mike Hanz]

Makes sense to me!   :-)

I think the Navy used that umbrella 49015 number so that regardless of 
the aircraft you were going to put the ARC-5 set in, it would have the 
appropriate setup.  I'm a little puzzled why they would have a separate 
number on the earphone elements for the ARR-3, and am wondering if they 
might have a different frequency response than the ANB-H-1s?

73,
Mike

Mike Morrow wrote:

>Mike wrote:
>
>
>>The _Aircraft Radio_ training manual put out by the Naval Research
>>Lab on 20 August 1936 lists the dual earphone set as 49015, exactly
>>the same as in the August 1945 directory, and that is portrayed as
>>300 ohms per earphone unit, so any institutional change from high Z
>>to low Z (if it occurred at all) must have happened earlier than 1936 
>>
>
>Hi Mike,
>
>The AN/ARC-5 LF/MF/HF maintenance manual AN 16-30ARC5-2 lists the "HS-33" as a "high impedance headset" (error) in the list of equipment required for set maintenance, but the related figure 8-70 simply lists a "49015" headset.
>
>I suppose one could be forgiven for just pairing up an HS-33 and CD-307 with USN gear.  The H-3/ARR-3 description on your website sounds an awful lot like an HS-33 (HB-7, M-301, PL-354, etc.).  At least using the RS-38 for the mic would still give the audio accessories that distinct USN look.
>