The coordinator of the ARRL’s WD2XSH 600-Meter Experimental Group — Fritz Raab, W1FR — said in his latest quarterly report that 630 meters is becoming quite active, with both Amateur Radio and Part 5 Experimental stations taking advantage of the band, which is still not available in the US.
“Band activity has been very high, and there are often more WSPR stations — more than 110 stations — on 472 kHz than on 80 or 160 meters!” Raab said. WSPR, which stands for “Weak Signal Propagation Reporter,” is software designed for transmitting and receiving low-power transmissions to test propagation paths on MF and HF.
“In a sense, 630 meters has become a mainstream ham band, in spite of not being authorized in the US,” Raab said. To boost activity, a second annual Midwinter 630-Meter Operating Activity Night will take place on February 4-5. Details will be announced.