9M2PJU CW QSO With WB6QQR, JJ5IZX And K7XB On 20 Meters
Thanks to JJ5IZX for the record.
28 Jan 2013 DX Report
Recently, my interest was finding and making a CW contact with DX station on 40m using my 100 watts transceiver and a homemade 40m dipole (2 meters above the ground).…
WaveGuide App
WaveGuide is the amateur radio operator’s ultimate utility for determining HF propagation conditions, whether you’re in the shack with your linear or QRP mountaintopping. Designed from the ground up as…
The Basics of VHF and UHF Signal Propagation
The Electromagnetic Spectrum – The electromagnetic spectrum is a continuum of all electromagnetic waves arranged according to frequency and wavelength. Electromagnetic radiation is classified into types according to the frequency…
Satellite Bands
Following are the frequency ranges used in satellite communications. L-band (390 MHz-1.55 GHz) GPS satellites, satellite phones, misc commsats, SETI outer space exploration S-band (1.55-5.2 GHz) weather satellites, XM/Sirius radio…
Optical Bands
The spectrum for transmission in singlemode optical fibers has been broken into the following wavelength ranges, or bands. Typically, the wavelengths transmitted in multimode fibers are around 850 and 1310…
Standard Radio System Plan – REQUIREMENTS FOR AMATEUR SERVICE OPERATING IN THE FREQUENCY BAND FROM 144 MHz TO 148 MHz
This Standard Radio System Plan (SRSP) states the requirements for the utilisation of the frequency band 144 MHz to 148 MHz for Amateur Service (AS) in Malaysia. download