I went down to the river Thames a couple of mile from home today for some portable operation and some experimenting with an end fed half wave antenna. I recently built a Parallel tuned coupler for feeding end fed half waves from 7-30MHz and this was tested on a few bands. I wanted to try 15m, but the band was full of contest stations due to the Scandinavian contest, so I cut a piece of wire for a 17m vertical. Below is some video took by Dave M0TAZ of me working Chris SM0OWX on 18MHz.
I have used the coupler on a few different bands now in various configurations with good results. I shall add a post with more results after some more tests and fine tuning soon. Here is a photo of the inside of the unit. 73 John.
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I’d love to see some more detailed pics of the tuned coupler. I’m currently in the UK also.
Thanks, there is some more info and photos of it here: https://m0ukd.com/homebrew/end-fed-half-wave-antenna-tuned-coupler/
73 John M0UKD.