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On LF I do not think wspr is the correct
mode to study propagation as suggested by some. Two procedures are
required with the mode. First it has to be detected then analyised and decoded
into a print format to be viewed. Morse sent in the QRS mode at a suitable speed
between 1 and 120 sec dot only requires one procedure, to be detected and viewed
and would give a good indication of propagation whether used for QSO purposed or
otherwise.
I have pointed out recently that I have observed
all of the traces from those transmitting WSPR and had the carrier been directly
keyed in QRS mode an ID or intellegence would have been conveyed, whereas only
part of the time was the signals decoded in wspr. For those viewing the print
format only and getting no copy would never know whether the signall was being
received or if it was faulty sampling and decoding.
Cut out the second procedure of decoding, avoid
ambiguity and use the slow keyed carried method using morse code or murray
code. A waterfall display and the EYE is a very sensitive detector,
For those experimenting with data modes have
fun but todate in the amateur radio LF/MF context nothing yet has
surpassed the use of slow morse keyed at a speed to suit one's needs ie
propagation studies or communication between two stations.
mal/g3kev
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