What is an End Fed Half Wave (EFHW) It’s a multi-band antenna that is a half-wave on the lowest band of your choice. The simple calculation is 144 / f (MHZ) 3.6 MHz = 144/3.5 = 41.15m of wire So we can construct a simple, handy table for construction Freq Length 3.6 MHz 41.15 m […]
On one of our summers days, LEFARS my local club organised a field weekend and it was sunny. The idea was to play some radio in the sun, with multiple stations operating from in the hired field. Members were advised to use band pass filters, this helps keep things friendly to multiple operators. The weekend […]
Portable HF has always been fun, recently I have joined the End Fed Half Wave club. I purchased a few EFHW 49:1 or 64:1 matching transformers and wanted to try these out at a recent LEFARS field weekend. Typically an EFHW will operate on multiple bands, so 20m of wire will provide a resonant antenna […]
The weather is getting better, and taking your radio equipment outdoors adds another dimension to the hobby. If you have access to a friendly farmer, this can provide a retreat away from the high urban noise levels to play some radio. The Ioniq5 has a V2L system that allows you to run any 240v appliance […]
August is the last Bank Holiday of the year, and with the weather set to be 30c+, it provided the ideal weekend to play some radio. Members of LEFARS and SNBCG came together at Kelvedon Hatch Secret Nuclear bunker for a 3 day radio weekend, including BBQ and camping. Some members of the advanced party […]
I have always enjoyed operating portable HF as you can put up antenna and work bands not possible at home. This coupled with finding an RF quiet location can make HF portable very enjoyable. Using a 12m spider beam roach pole, an 80m doublet fed with 300 Ohm ribbon cable and Icom 7100 I parked […]