[Milsurplus] Mackay 123B

[Michael Bittner]

FWIW, here are a couple of photos of my favorite "manually diddled" LF 
emergency crystal radio in my collection, an RCA Type B.  I still works 
remarkably well.

https://photos.app.goo.gl/naOn7eDGixQQ1B2L2

https://photos.app.goo.gl/80yNsmqAN8RGzpfv1

Mike, W6MAB

----- Original Message ----- 
From: "Hubert Miller" <Kargo_cult at msn.com>
To: <Milsurplus at mailman.qth.net>
Sent: Sunday, September 17, 2017 1:29 PM
Subject: Re: [Milsurplus] Mackay 123B


I have not seen one of the 'emergency crystal receivers' among 3 varieties, 
with a fixed crystal.
I think the early fixed crystals were somewhat fragile and susceptible to 
moisture ingression?
But I don't have any evidence marshalled. I'm just recalling some 
instructions that came with
jim-crack early toy crystal radio with fixed crystal.
-Hue

>well they all had the manually diddled adjustable crystal detector? or were 
>the later ones replaced with a simple diode?
Ed#
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