I have been planning a return to HF operation, so the question of stealthy (small) backyard antennas comes up. The available space is the typical ‘not much’, roughly 55ft by 30ft
Plan A is an inverted L, fed via an auto ATU at the far end of the garden, with the horizontal section of the “L” coming back towards the house. So far A CG3000 auto-tuner has been obtained on ebay, and a 12m “Spiderbeam” telescopic fibreglass pole. Every plan should have a sketch, so here’s mine:
So the ATU will not tune easily a length of wire close to 1/2 a wavelength or multiples pf half a wavelength. I reckon the wire length will be around 23m. I have to keep away from 21m which is a half wavelength at 7.1MHz and multiples at 14.2 and 21.3MHz (!)
I plan to run radials under the lawn and along the bottom part of the wooden fencing.