Re: [amsat-bb] Plantronics Headset

["George Henry" <ka3hsw@xxxxxxxxxxxxx>]

It appears to be basically the same as a Plantronics telephone headset that 
I converted to use with my HT bicycle-mobile a few years ago...  the mic 
element is an electronic "carbon eqivalent", according to the Plantronics 
literature, but for the telephone version, I simply hooked it up to the HT 
exactly like an electret element, and it worked fine.  I did the same with 
an older Plantronics over-the-ear telephone headset and an old Icom IC-255A 
*many* years ago, and it also worked fine.  If your rig's mic line provides 
a DC bias for a preamp or an electret element, it should work.  If not, use 
a 1:1 transformer, and supply current-limited DC on the headset side of the 
transformer.

George, KA3HSW


----- Original Message ----- 
From: "Thomas Webb" <tmwebb@cox.net>
To: "AMSAT" <amsat-bb@amsat.org>
Sent: Tuesday, June 06, 2006 6:58 PM
Subject: [amsat-bb] Plantronics Headset


> Has anyone in satellite land converted a Plantronics MS50 headset for use
> with an amateur transceiver?  The earphone part appears pretty clear; just
> change the connector....but what about the mic?
>
> Tom Webb, WA9AFM/5
> ----
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