In this (Live) video, we will look at:
What is a Dipole
Coax or Balanced feeder
How they work?
Dipole or Doublet
Do we need a chokeChoke
How do we connect to the feedpoint
Shapes, Flat Top or Inv V – and Z shapes etc
How Height above ground changes tune
What happens to your signal (when we change the height)
Enjoy! Callum.
Ham Radio Antennas normally work better at height. The Hexbeam is no exception and although a result can be achieved from about 6m AGL, for the 20m band – we ought to be looking at least around half a wavelength. Let’s have a look at the problem and understand the physics. Callum M0MCX.
My Holiday Ham Radio Antenna. NOTE: I used a Classic Stay-Up kit as an experiment. These are not normally supplied but I was away for 2-weeks and was running some tests with a number of different clamps. TWO are normally supplied with the DX Commander Expedition Kit as at June 2022. Price for the Expedition antenna is currently £209 and gives me 40, 20, 17, 15, 10 and 6m (No ATU). Tom M0RMY put his up (and down!) every day when he walked around Isle of Arran with this and the IC-705, solar power and a battery. He says he got the erection and tear-down to around 7-minutes. Tom’s channel is: https://www.youtube.com/channel/UCW3uOTzOtgMMa8p6oKeXYXw/videos – Check out the little Easter Egg at 5:54 (drone!). Thanks to everyone who joined in! 73, Callum, M0MCX.
This follows the Premiere where I discuss extremely long (very long!) wire antennas. Q&A followed by some reall RF from Cornwall using TS-590SG at 100W and DX Commander Expedition. Logging is via N1MM+ and the little spectrum thing is Friture (free download). Callum. M0MCX.
Always looking to trim back my /P amateur radio gear but I do like 100W and a laptop when I’m on holiday. I think I’m now at the minimum anyway. What about a headset? Got any ideas? Callum, M0MCX.
100W TS-590SG and a DX Commander Vertical from Bude Cornwall running N1MM logger. Antenna has about 25 radials, each about 3m long. Focussing on 40m and 20m but we also have 17m, 15m and 10m available. 73, Callum.