[CQ-Contest] Reliable Voice/CW Keyer for Omni VI+

[Barockteer at aol.com]

Gee, Icom has the same problem, sending out 8 volts on the Mic line, and we just stick a dc blocking cap in the line...


But for the folks who don't, and just crank up the mic gain, I think there's a problem with this. I think the Heil elements are dynamic, which means they're built like speakers, with a moving coil and a magnet. If you put DC on them, it shoves the coil all the way to the end of it's travel, and screws up the output and frequency response. Maybe I'm wrong on this...

73,

Tony, K1KP


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>From Steve Baron - KB3MM" <SteveBaron at starlinx.com  Tue Dec 25 02:26:52 2001
From: Steve Baron - KB3MM" <SteveBaron at starlinx.com (Steve Baron - KB3MM)
Date: Tue, 25 Dec 2001 02:26:52 -0000
Subject: [CQ-Contest] Reliable Voice/CW Keyer for Omni VI+
References: <ac.2001ba1c.29593730 at aol.com>
Message-ID: <01e501c18cee$6e6c9740$932267cf at sfb>


Well, at one time Heil wired their mics for TT rigs.  No problem...just pleg
'em in.

----- Original Message -----
From: <Barockteer at aol.com>
To: <cq-contest at contesting.com>
Sent: Tuesday, December 25, 2001 01:58
Subject: Re: [CQ-Contest] Reliable Voice/CW Keyer for Omni VI+


>
>
>
> Gee, Icom has the same problem, sending out 8 volts on the Mic line, and
we just stick a dc blocking cap in the line...
>
>
> But for the folks who don't, and just crank up the mic gain, I think
there's a problem with this. I think the Heil elements are dynamic, which
means they're built like speakers, with a moving coil and a magnet. If you
put DC on them, it shoves the coil all the way to the end of it's travel,
and screws up the output and frequency response. Maybe I'm wrong on this...
>
> 73,
>
> Tony, K1KP
>
>
> --
> CQ-Contest on WWW: http://lists.contesting.com/_cq-contest/
> Administrative requests: cq-contest-REQUEST at contesting.com
>
>


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