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From: "Bob Tellefsen" <n6wg at earthlink.net>
To: "Tom" <thom2 at worldnet.att.net>, <Elecraft at mailman.qth.net>
Subject: RE: [Elecraft] External Speaker
Date: Mon, 8 Jul 2002 10:01:30 -0700

Tom
I use an external speaker that doubles as an acoustic filter for cw.

It is a thick plastic drinking glass, with a small circular speaker mounted
inside.
It peaks at 560 Hz, which is just what I like.  It supplements the selective
elements
of the K2, and makes a noticeable reduction in high pitched hiss.

When tuning in my widest bandwidth setting, I can get very close to my
prefered
pitch just by peaking the signal in the speaker.  Then I narrow my cw
filters and fine tune if necessary.

73, Bob N6WG

-----Original Message-----
From: elecraft-admin at mailman.qth.net
[mailto:elecraft-admin at mailman.qth.net]On Behalf Of Tom
Sent: Sunday, July 07, 2002 2:46 PM
To: Elecraft at mailman.qth.net
Subject: [Elecraft] External Speaker


Hi gang,
  The Hints and Kinks section of the July issue of QST had an article on
building an external speaker.  I was wondering if anyone has any suggestions
on building a speaker for the K2.  I'm not as interested in the box it will
go in as much as the circuit design itself, which you may have used.

Thanks in advance for any ideas you may share.

Tom
McCulloch
WB2QDG
K2 S/N 1103

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