KA7OEI's blog: A transmit converter (and amplifier) for 630 and 2200 meters
Dual 6V6 QRP Transmitter/Regenerative Receiver 630/160/80/40 Meter Bands | eBay
Getting Started on 630 metres
Notification Process for 630 and 2200 Meter band Operation – N4BFR Vision
Marconi Antenna for LF/MF
The 630M/2200M Antenna Recipe
630m Transverter
Amateur Radio Activiy on the 630 meter band (Medium Frequency)
Lowdown 630-Meter Band Amateur Radio Antenna
Episode 44: A Survey of the 630-meter band for Amateur Radio -
630-meter Ham Band | A Ham Radio Band below the AM Broadcast Band - YouTube
Lowdown 630 Meter Amateur Radio Antenna - 630.PD | eBay
500 kHz - Wikipedia
Ham Radio - My 630 meter magloop. An overview - YouTube
630-meter band - Wikipedia
KA7OEI's blog: A transmit converter (and amplifier) for 630 and 2200 meters
Loop Antennas for 630 Meter Transmitting
472kHz.org
630m Transverter
AC1CP Amateur Radio Band Plan
Hams Map Powerlines for Low Frequency Interference | QRZ Forums
WD8DAS 630-Meter Band Operations
Casella CEL 630.A Type 2 Ultra Wide Octave Band Sound Level Meter Kit
630 meters Ham Radio - Old is New, Again - Making It Up
472kHz.org
The new 630 meter band is now a reality
630 Meters | W0QL – My Remote Base Journal
Antique Radio Forums • View topic - 630 meter (472-479 kHz) Amateur Band
New 630-Meter Band Reported “Very Busy”
