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The ultimate WSPR spot
17 May 2015 | by 
A spot reported by K1JT must be the ultimate goal for the WSPR mode. K1JT, Joseph Taylor, is the Nobel laureate who first developed this mode and other related two-way modes like JT65 and JT9.
My 0.1 W 21 MHz WSPR transmitter regularly makes it over the Atlantic, but never before to K1JT. The SWR was something like 7:1, but apparently that works fine, both for the transmitter and for radiation.
The antenna is a 13 m doublet oriented with the broadside facing East-West. I feed it with 450 ohm ladder line to a 4:1 Elecraft balun which is connected to the Ultimate 2 transmitter.
2 Responses to “The ultimate WSPR spot”
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I’m in San Diego CA and was excited to hear K1JT on 20m WSPR yesterday. 50′ random wire antenna around my apartment’s patio, feeding a Funcube Pro+.
It gives more credibility when a developer of ham radio modes, software, or hardware is an active ham. This is the case here as it is for many other ham radio developers as well.