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Re: Topband: Topband Digest, Vol 278, Issue 2

To: topband@contesting.com
Subject: Re: Topband: Topband Digest, Vol 278, Issue 2
From: David Raymond <drbp4858@gmail.com>
Date: Sat, 7 Feb 2026 15:30:14 -0600
List-post: <mailto:topband@contesting.com>
Dennis. . .there is another CW speaker owner using an Elecraft K4D.  He has shared his findings with me over the past few month and has results similar to mine.  I will let him share further information if he desires.

73 for now. . . Dave, W0FLS

On 2/7/2026 12:25 PM, Dennis W0JX via Topband wrote:
  I wonder if this effect exists in HYBRID receivers such as the Yaesu FTDX-101 
and also the K4HD?
Incidentally, the tuned speaker is an old concept. There is a guy in TX that 
has been building them for years with PVC tubing. Only problem is that his 
resonanted around 750 HZ. Even 600+ sound high when I'm used to around 420 Hz 
or so.
73 Dennis W0JX
    .
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