[Top] [All Lists]

[SD-User] CW keyer issue

To: "" <>
Subject: [SD-User] CW keyer issue
From: Brad Anbro <>
Date: Thu, 21 Mar 2019 10:01:01 +0000
List-post: <>
​Hello all,

I recently installed SD on my Windows 7 Professional machine. I am trying to 
use my
home-made CW keyer, which utilizes the serial port (COM1). My interface uses a
single 2N4401 transistor and a 1K resistor.

The interface works just fine with my "CT" software but seems to key my HF rig
continuously. Am I doing something wrong in the set-up?

Thanks for any help!

Brad Anbro, N9EN
Bluff City, TN USA

SD-User mailing list
<Prev in Thread] Current Thread [Next in Thread>
  • [SD-User] CW keyer issue, Brad Anbro <=