[Milsurplus] SIMPLE Carbon Microphone Substitute.

[hwhall at compuserve.com]

N-1 elements were used in telephone switchboard boom-mike headsets like the Western Electric Model 52. That Motorola mike I mentioned earlier was a Roanwell made N-1.

Audiosears offers a model 1628 that is their version of the N-1:
http://www.audiosears.com/products/data/mics/1628/

 They say their resistance is 15 - 60 ohms. I think their site is the only place I encountered any data on the N-1.

Wayne

 WB4OGM

 

-----Original Message-----
From: Hubert Miller <kargo_cult at msn.com>
To: milsurplus <milsurplus at mailman.qth.net>
Sent: Sun, May 29, 2016 2:44 pm
Subject: Re: [Milsurplus] SIMPLE Carbon Microphone Substitute.



What’s the resistance ( or any spec ) of those tel operator headsets – the early ones, not the late Plantronics style – you describe? With the smaller button than the F-1
element? I have several of those headsets around. I think the headphone part is 350 ohms Z. 
Which reminds me again, i have a factory box of new F-1 elements i should do something with. 
-Hue 
 
From: Milsurplus [mailto:milsurplus-bounces at mailman.qth.net] On Behalf Of hwhall at compuserve.com
Sent: Saturday, May 28, 2016 5:07 PM
To: cjack93907 at razzolink.com; milsurplus at mailman.qth.net
Subject: Re: [Milsurplus] SIMPLE Carbon Microphone Substitute.
 

>microphone from a Motorola 2-way radio 


I have a couple of Motorola mikes from some sort of portable belt-clipped transmitters, perhaps railroad used items.  Are those similar to what you were thinking of?  Their mike buttons are marked Roanwell RN-1, which is the same as a generic N-1, the button used in those old switchboard operator headsets (think of the Lilly Tomlin telephone operator skit).

Wayne
WB4OGM

 


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