Revised ARRL Frequency Charts Now Available
630 meter band: i1wqrlinkradio.com
KA7OEI's blog: A transmit converter (and amplifier) for 630 and 2200 meters
630-meter Ham Band | A Ham Radio Band below the AM Broadcast Band - YouTube
472kHz.org
WD8DAS 630-Meter Band Operations
Amateur Radio Activiy on the 630 meter band (Medium Frequency)
Amateur Radio Activiy on the 630 meter band (Medium Frequency)
Antenna 630m VK2DX
Ham Radio - My 630 meter magloop. An overview - YouTube
Ham Radio - Get on 630 meters with a bucket variometer! - YouTube
Amateur Radio Activiy on the 630 meter band (Medium Frequency)
Hams Map Powerlines for Low Frequency Interference | QRZ Forums
472kHz.org
Lowdown 630-Meter Band Amateur Radio Antenna
KL7UW 630m Topics
Ham Radio Bands | NewHams.info
2 More Ham Radio Bands, 630 meter / 2200 meter Amateur Radio - YouTube
Meter WSPR Beacon Transmitter
KA7OEI's blog: A transmit converter (and amplifier) for 630 and 2200 meters
Getting Started on 630 metres
New 630-Meter Band Reported “Very Busy”
630m Transverter
