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Having used practically every mode both as a radio
amateur and commercial operator morse code (CW) is the most effective method for
a radio amateur where only a minimum amount of information is
exchanged.
I decided last night to check out the WSPR
transmissions and was able to see clearly Jay's 2 minute interval traces
long before it strong enough to decode to text.
If the traces had been keyed on/off as in CW or the
slower QRS 3 mode I could have read the information directly off the screen and
not have to wait ages for a text decode, therefore I see no advantage with
this mode.
Regarding bandwidth it is misleading to say that it
uses only 6 hz bandwidth, the WSPR mode is designed to simultaneously
accommadate X number of 6hz bandwidth transmissionns in a 200 hz bandwidth
therefore if there is adjacent QRM near or overlapping this transmission it is
self evident that it will corrupt some of the individual 6 hz data
streams.
For interest I still have a KAM and PK232 data mode
boxes plus a box full of software for soundcard use for all the current data
modes.
Morse Code(CW, WT) call it what you like is still
the most effective method for radio amateur communications, and the slower
versions are ideal for weak signal propagation investigations.
Of course WSPR was designed for VHF/UHF purposes
where it is probably more suited and not on MF/LF in a crowded 3 khz slot where
it is more likely to suffer from QRM from other more robust modes.
For those that derive enjoyment in the data world
carry on and have fun.
G3KEV
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