Amateur Radio Activiy on the 630 meter band (Medium Frequency)
The 630M/2200M Antenna Recipe
New 630-Meter Band Reported “Very Busy”
Antenna 630m VK2DX
Hams Map Powerlines for Low Frequency Interference | QRZ Forums
N2KNL | Band Plan
472kHz.org
Marconi Antenna for LF/MF
AC1CP Amateur Radio Band Plan
630m Transverter
Notification Process for 630 and 2200 Meter band Operation – N4BFR Vision
Getting Started on 630 metres
KA7OEI's blog: A transmit converter (and amplifier) for 630 and 2200 meters
KA7OEI's blog: A transmit converter (and amplifier) for 630 and 2200 meters
FCC Opens 630/2200 Meters Amateur Band; Pre-Registration Required!
Dual 6V6 QRP Transmitter/Regenerative Receiver 630/160/80/40 Meter Bands | eBay
Ham Radio - Get on 630 meters with a bucket variometer! - YouTube
Getting Started on 630 metres
A Portable QRP CW Amateur Transceiver for 475 KHZ 630 Meter - Etsy
630m Transverter
2200 and 630 Meters
The 630 - Meter Band: Is it Practical for Amateur Use? on Vimeo
Casella CEL 630.A Type 2 Ultra Wide Octave Band Sound Level Meter Kit
Antique Radio Forums • View topic - 630 meter (472-479 kHz) Amateur Band
Ham Radio - My 630 meter magloop. An overview - YouTube
