Hi Roelof, thank you for those comments, that was my feeling but there is so
much recorded informationI thought it was worth a look and sticking my neck
out to see if anyone would say I was all wrong :-))
Yes for preference I would use a continuous carrier/signal but that is not
always possible.
Thanks and Best Wishes
Alan
G3NYK
----- Original Message -----
From: "Roelof Bakker" <[email protected]>
To: <[email protected]>; <[email protected]>
Sent: Tuesday, March 08, 2016 2:46 PM
Subject: Re: LF: VO1NA CW 477.7 kHz
Hello all,
Attached last night's reception of VO1NA.
Between 01:15 and 01:25 UTC, marginal aural copy was possible in CW
mode and good aural copy in Linrad's coherent mode.
As can be seen, the band noise is much lower than the previous
night.
Alan, regarding the use of WSPR for propagation study, due to the
rapid fading on 475 kHz, a continuous signal is called for and most
WSPR stations don't provide this.
The S/N indication of WSPR is nice, but useless for propagation
study as the background noise shows a lot of variation over the
course of the night and from night to night as can be seen in my
overnight Linrad fast playback screen shots.
Best regards,
Roelof
====================================================================
From: Roelof Bakker, PAoRDT
Location: Middelburg, Zealand SW Netherlands, 51 30 02 N, 03 36 02 E
Locator: JO11tm
Receiver hardware: Afedri SDR
Receiver software: Linrad
Aerial: pa0rdt-mini-whip, 5 metre up in a hawthorn tree.
====================================================================
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