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Re: LF: CW 477.7 kHz

To: [email protected]
Subject: Re: LF: CW 477.7 kHz
From: "Roelof Bakker" <[email protected]>
Date: Sat, 23 Sep 2017 13:00:20 +0200
In-reply-to: <[email protected]>
References: <579355A36AEE9D4FA555C45D556003AB9AA1E057@servigilant.vigilant.local>, <[email protected]>, <[email protected]>
Reply-to: [email protected]
Sender: [email protected]
Hello Joe,

The signal was much better last night.
I have attached an audio clip.

This is made with Linrad using a 10 Hz wide filter.
The keying sidebands are well within the filter passband.

I believe slow Morse, say 10 WPM, received with a 10 Hz filter will  
achieve about the same signal to noise ratio as WSPR. In this case 
this is 24 dB compared to a 2500 Hz SSB bandwidth.

73,
Roelof, pa0rdt 
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     File:  VO1NA20170923.mp3
     Date:  23 Sep 2017, 12:51
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