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Re: [WriteLog] Heil mic circuit

To: "WriteLog Reflector" <writelog@contesting.com>
Subject: Re: [WriteLog] Heil mic circuit
From: "Chuck Fullgraf" <cfullgraf@sprynet.com>
Date: Mon, 22 Dec 2003 20:20:00 -0500
List-post: <mailto:writelog@contesting.com>
 Dick Dievendorff  said

>
> The main thing to worry with ICOM is that there is a DC voltage on the
> microphone audio lead that requires a blocking capacitor for Heil
elements.
> All the Heil ICOM adapters have this blocking capacitor built-in.
>

Caution, not all Heil adapters have the blocking capacitor. The adapters for
the Heil mics with the "IC" element for Icom radios do not have the blocking
capacitor since the microphone elements require the voltage. The adapter I
have says "No Cap" on the blue band.

Chuck, KE4OAR


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