[Lowfer] Additional 630M Captures

Bill de Carle ve2iq at magma.ca
Sat Nov 21 11:18:38 EST 2015


When changing from one band to another (say from MF to LF) - things 
can get tricky.   For example, if the receiver is changed from 474.2 
Khz USB to 136.0 Khz USB and then the WSPR program's band is changed 
on-the-fly, for some period of time WSPR will think the radio is 
still on 474.2 Khz.  With the rig actually on 136.0 Khz USB, an RF 
carrier arriving on 137.435 Khz would produce an audio tone at 1435 
Hz.  But at upload time if WSPR thought the radio was still tuned to 
474.2 Khz it would report that 1435 Hz audio signal as being on 
474.635 Khz.  Perhaps the safest way to switch bands is to tick the 
"idle" box, wait till it stops receiving and completes any uploads, 
make the band change both at the rig and in the program, then untick 
the box.  Or let WSPR control the radio directly.

Bill VE2IQ

At 08:08 AM 11/21/2015, John, W1TAG wrote:
>>The following capture is questionable as the transmit frequency is
>>sitting near a local spur trace on my screen:
>>
>>0306  -22   0.1    0.475636    0   WD2XES        FN42     30
>>
>>If this indeed is a valid capture, please let me know.
>
>Tom,
>
>I was on 137.435 kHz all evening. Which band were you listening to?
>
>John, W1TAG/WD2XES
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