•71.6 - 74.4
kHz – U.K. allocation
•Mostly for cave communications using induction rather
then radio
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•135.7-137.8
kHz – 2200m Band
•Approved at the World Radio Communication Conference
(WRC-07) for world wide use but not by FCC
•Many stations active, mostly in UK and Canada
•Many use ARGO, by I2PHD and IK2CZZ - Software for
decoding QRSS signals
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•160-190 kHz –
LowFER (Low-Frequency Experimental Radio) Band (Real QRPp!)
•License free operation under FCC Part 15.217
•Limit 1W DC input to the PA
•Maximum 15m of
antenna, ground lead, and feedline together!
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