The QRPer Board

and then ...




also, if your antenna is a dummy load increasing your power won't help, so I believe you should revise your percentages

and here's a reduced space antennna offering surprising performances, almost 2MHz bandwidth and a gain near 8 dBi it's a dipole, and it's suitable forcthe HF bands, for exanple to setup a 20m dipole in a limited space, the only limitation is the height and that's neeeded to achieve good gain (almost...

KL7MJ wrote: ↑Wed Oct 29, 2025 7:46 pm 90% of a contact is due to propagation.
9% of a contact is due to your antenna.
1% of a contact is due to your power.

antenna SYSTEM (antenna, feedline, connectors, ...)

some more infos

https://reflector.sota.org.uk/t/oblong-for-10m/34523

https://g4tgj.github.io/20m-EFHW-Vertical-Antenna/

it may come handy for POTA/SOTA due to its omnidirectional pattern and low takeoff angle

so... did you try that loop then ?

check this loop for the 20m band

http://sm0vpo.altervista.org/antennas/20m_ant_00.htm



HTH

And here's the 3D radiation pattern, as you can see, it's just like the one from a regular size dipole
https://qrper.net/download/file.php?id=194

OK, changed the model so that the folded portion is below, so that the contruction/installation of the dipole is easier, here's the new model optimized for the 20 metters band (centered on 14.175 MHz) CM 20m band shortened dipole CM feed it using a guanella 1:1 CE ' design frequency SY freq=14.175 S...

here's a summary, notice the span and the gain