[ARC5] My military headphones....

[D C _Mac_ Macdonald]

I'm not really sure what my headphones are; HS-23? HS-33? 
 
The receivers are labeled: 
 
RECEIVER 
ANB-H-1
MADE IN USA
 BY
UTAH-CHICAGO
 
They have the red PL-354 short plug. 
 
The metal sleeve crimped on the adaptor cord is labeled: CH-307-A 
 
The shells of the connectors on the adaptor cord are pretty deteriorated. 
 
I bought the headset at Radio Shack on Commonwealth Avenue in Boston, MA in summer 1956. 
 
Can anybody fully identify this ancient piece of antiquity? 
  
* * * * * * * * * * * 
* 73 - Mac, K2GKK/5 * 
* (Since 30 Nov 53) * 
* k2gkk hotmail com * 
* Oklahoma City, OK * 
* USAF & FAA (Ret.) * 
* * * * * * * * * * * 
 

 
> Date: Sat, 3 Jan 2015 09:07:24 -0700
> From: joelroberts001 at comcast.net
> To: arc5 at mailman.qth.net; kgordon2006 at frontier.com
> Subject: Re: [ARC5] My military headphones....
> 
> Hi Ken, I have several of the high to low impedance connector converters 
> if you need one. I in fact have four, three that are new and in the box. 
> If you need one let me know.. Joel   KB0FPT   
> On 1/2/2015 12:11 PM, Kenneth G. Gordon wrote:
> > OK. After further "research" it is looking as though my 'phones are either an
> > HS-23 or an HS-33 set.
> >
> > The red PL-354 is on the end of the short cord, and when I use them with my
> > FT-890, I get considerably more volume out of them than with my other set
> > of phones, which have some sort of ANB-*** type elements, which are,
> > obviously, higher impedance.
> >
> > Therefore, I am more inclined to believe these are the low-impedance
> > HS-33s.
> >
> > I'll measure the DC resistance later today to see what I have. According to
> > Mike Hanz' site, they should measure 60 ohms, if they are the 600 ohm
> > types. We'll see.
> >
> > I also hope I am correct when I say that the pads I have been directed to by
> > you folks, which are listed as fitting all mil phones, will fit these.
> >
> > Thanks,
> >
> > Ken W7EKB