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Re: Plantronics Headset

Originally, I used it with a Radio Shack HTX-202.  I later also used it 
successfully with a Yaesu FT-470 dual bander.

George, KA3HSW

----- Original Message ----- 
From: "Thomas Webb" <tmwebb@cox.net>
To: "George Henry" <ka3hsw@earthlink.net>
Sent: Wednesday, June 07, 2006 5:56 PM
Subject: Re: [amsat-bb] Plantronics Headset

> What HT did you have?
> ----- Original Message ----- 
> From: "George Henry" <ka3hsw@earthlink.net>
> To: "amsat bb" <amsat-bb@AMSAT.Org>
> Sent: Tuesday, June 06, 2006 9:57 PM
> Subject: Re: [amsat-bb] Plantronics Headset
>> 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
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