[Milsurplus] WWII-era USN headphone question

[Mike Morrow]

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.

73,
Mike / KK5F