A strong G3-class geomagnetic storm is possible later this week when a ‘Cannibal CME’ hits Earth’s magnetic field. It’s a ‘cannibal’ because it ate one of its own kind en route to our planet. The mash-up of two CMEs could Read more…
Month: March 2022
K-Pop Jamming Compounds Russian HF Woes in Ukraine….
The Russian Army relies heavily on HF radio. Using transmissions of 3-30MHz, HF transmissions traverse BLoS ranges because they bounce off the ionosphere back to Earth, like a snooker ball bouncing off the table’s cushion. This phenomenon means HF transmissions Read more…
Some UK radio amateurs now licensed for 8M (40 -42 MHz)….
John EI7GL reports Ofcom is now issuing some UK radio amateurs with temporary Innovation and Research licences to transmit in the 40 MHz band On his blog John writes: Roger, G3XBM in the east of England can operate from the 2nd Read more…
Coax and Ladder-Line Info…
Coax and Ladder-Line Info Basic Feedline Facts for Hams RG-174 (50 ohms) is very small (~0.11″) and lossy. Suitable only for short pigtails and jumpers at very low power, as in receivers, scanners, etc. RG-58 (50 ohm) is about 0.195″, Read more…