[Hallicrafters] Headphones

[Glen Zook]

Probably the old 2000 ohm "high impedance" headphones
that were "standard" from before World War I until the
1960s.

I have a pair of Western Electric headphones with a
1918 patent date (and they were manufactured not that
long thereafter) that I obtained years ago that did
not have a cord.  After getting tired of the hum from
my receivers (I knew better than to use 8 ohm
headphones but they were "handy").  I put new cable on
them, wiring them for "stereo".

What I have is a switch that allows me to use the
headphones on any of 3 receivers (usually a Collins
75S-3A, Collins 75S-1, and Heath SB-301) by putting
the switch in the proper position.  However, I have
the switch wired so that I can have both sides on a
single receiver or I can have one side on one receiver
and the other side on another receiver.  This is VERY
"handy" when working DX "split" on 40 meter SSB.

High impedance headphones are MUCH less "prone" to AC
hum than stereo types.  They do not usually have that
low a frequency response.  As such, thoy are very good
for the narrow frequency response required by amateur
radio communications.  For listening to music, they
"suck".  But for CW and SSB they work very well.

Glen, K9STH

--- "Langston, Mike" <MLangston at HCPRICECO.com> wrote:

Then I found this old set of phones that got thrown in
with some other purchase I had made that I had never
put a plug on. Guess what? No HUMMMMMMM and they sound
great. Now I'm curious what these are. Here's the
identifying info:

Alnico Magnetic
 
No. 25

C. F. Cannon Co.
 
 Springwater, N.Y.


Glen, K9STH

Web sites

http://home.comcast.net/~k9sth
http://home.comcast.net/~zcomco


		
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