[Motorola] Pin-Out & Specs for HMN9083D Motorola mic?

Sun, 17 Feb 2002 10:11:30 +0200

For the most part these microphone had an output impedance of about 600
ohms. The old Motorola ones had a one transistor amplifier built in =
order to
set the impedance.
	What you have to watch for is that Icom is sensing the current drawn
by the microphone to activate the PTT line in the radio, while Motorola
usually used a separate wire activated by a separate contact of the PTT
switch. I'm going to try to send you  at least a principial schematic =
in a
day or two.
Alex Eban  4Z5KS
RF Chief Engineer
Wireless Division
M.T.I. Computers
Tel: +972 3 9025555ext321
Fax: +972 3 9025051
Email: [email protected] <[email protected]>=20

	-----Original Message-----
	From:	Ken Cechura [SMTP:[email protected]]
	Sent:	=F9 16 =F4=E1=F8=E5=E0=F8 2002 6:05
	To:	[email protected]
	Subject:	Re: [Motorola] Pin-Out & Specs for HMN9083D Motorola
mic?

	Isn't the impedance of the Motorola mic element different than that
of, say=20
	your yaesu or icom?

	At 10:58 PM 2/15/2002 -0500, you wrote:
	>I've been trying to track down the pinout and specs for my
	>HMN9083D Motorola spkr-mic -- thought it would be easy
	>via the Internet but so far no luck.
	>
	>I'd like to wire two adapters, one for my Icom IC-W21AT
	>HT and one for my FT-817.  I don't want to hack off the
	>stock 5-pin Motorola plug if I can avoid that, and would
	>still need the info anyhow!
	>
	>Anyone have the specs, circuit description, and/or pin-outs,
	>please?
	>
	>Thanks! & 73, doc KD4E
	>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	>
	>
	>
	>
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	>[email protected]
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	      //////////////////////////////////////////////////////
	     //        Kenneth R. Cechura, KC9UMR                //
	    //             [email protected]                     //
	   //           President, W0EEE, 2002                 //
	  // University of Missouri-Rolla Amateur Radio Club  //
	//////////////////////////////////////////////////////


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