[Boatanchors] Early transistor radio earphone.

w8bvh w8bvh at sbcglobal.net
Mon Sep 7 11:12:49 EDT 2009


Hello Ken:
I have one here.Give me your mailing address and I'll drop in the mail.
Best wishes,
Ralph Howes
W8BVH
----- Original Message ----- 
From: "KEN" <n5cm at rtconline.com>
To: <boatanchors at mailman.qth.net>; <boatanchors at theporch.com>; 
<crystal_sets at mailman.qth.net>
Sent: Monday, September 07, 2009 11:01 AM
Subject: [Boatanchors] Early transistor radio earphone.


> Hi Gang,
>
> I am in need of one of the early earphones that came with the first 
> transistor AM radios.
> Those earphones "plugged" into the outer ear canal.
> Way back in 1959, I lost hearing in my left ear. Recently, I believe I 
> have discovered
> response at one point in the audio spectrum with amplification. I believe 
> if this is true
> I should be able to copy CW at that spot in the audio spectrum. I need to 
> keep the
> amplified sound from being picked up with my good right ear hence the type 
> of
> earphone that "seals" the sound inside the bad ear canal .
> I am aware of "bone conduction" and "tissue conduction" but I don't think 
> this will be
> a problem if I can keep the sound thru the air from my good ear.
> If successfull, maybe I can read CW and monitor another circuit either CW 
> or Phone,
> in other words, work "split phones". Wish me luck!
> Please search your junk box. Thanks,
>
> Ken   N5CM
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