[CW] 600 Hz Resonant Speaker for CW - Plans

[DANNY DOUGLAS]

Tongue in Cheek Mike!!!
Especially for somone with Nr 1 Honor Roll.  hehe

Danny Douglas
N7DC
ex WN5QMX ET2US WA5UKR ET3USA
SV0WPP VS6DD N7DC/YV5 G5CTB

All 2 years or more (except Novice)
Pls QSL direct, buro, or LOTW preferred,
I Do not use, but as a courtesy do upload to eQSL for
those who do.

Moderator
DXandTALK
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Digital_modes
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----- Original Message ----- 
From: "mikea" <mikea at mikea.ath.cx>
To: "CW Reflector" <cw at mailman.qth.net>
Sent: Wednesday, September 02, 2009 11:58 AM
Subject: Re: [CW] 600 Hz Resonant Speaker for CW - Plans


> On Wed, Sep 02, 2009 at 11:47:44AM -0400, DANNY DOUGLAS wrote:
>> Is that another April Fools joke?  A machine to read
>> Morse code???
>>
>>   I tore apart 3 headphones, trying to build a mechanical audio
>> filter, and never could get them right, since my left and right ears have
>> different hearing losses.
>
> It's for-real. MFJ sells at least one Morse reader; there are programs
> to run under Windows (and possibly Unix/Linux) to read Morse. Back
> when computers were enormous and filled rooms, there were commercial
> rack-mount Morse readers using discrete transistor logic.
>
> None of them does a great job if conditions are not pretty darned good.
>
> -- 
> Mike Andrews, W5EGO
> mikea at mikea.ath.cx
> Tired old sysadmin
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