[ICOM] RE: ICOM IC-2410H Dual Band with a HM14 Mic

[Hsu, Aaron (NBC Universal)]

On the IC-2410's "stock" hand-mic, there is a clamping diode across the microphone element.  Removing the diode is the simple way to increase audio from the mic - replacing it with a 9.1v zener is the "proper" way of doing it (I removed the one in my 2410 mic).

Here's a reference link:
  http://www.wb4hfn.com/Modifications/SM6140

You can also Google "IC-2410 low audio"


73,

  - Aaron Hsu, NN6O



-----Original Message-----
From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net] On Behalf Of ki4hhk at verizon.net
Sent: Tuesday, August 07, 2007 7:47 PM
To: ICOM Reflector
Subject: [ICOM] ICOM IC-2410H Dual Band with a HM14 Mic

Having a problem with a ICOM IC-2410H Dual Band with a HM14 Mic.

Repeater listeners are commenting that the audio seems soft/low with this
combination.

Does someone have knowledge of the circuit  inside the radio that can raise
the audio level?

Bruce Crow
KI4HHK at verizon.net

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