Random wire calculator adjusted for shortwave

[halfd]

There is a endfed calculator in python for ham bands on End-fed Antenna Lengths

I modified it for shortwave bands. See attachment.

120m [2.300 - 2.495 MHz]
90m [3.200 - 3.400 MHz]
75m [3.900 - 4.000 MHz]
60m [4.750 - 4.995 MHz]
49m [5.900 - 6.200 MHz]
41m [7.200 - 7.450 MHz]
31m [9.400 - 9.900 MHz]
25m [11.600 - 12.100 MHz]
22m [13.570 - 13.870 MHz]
19m [15.100 - 15.800 MHz]
16m [17.480 - 17.900 MHz]
15m [18.900 - 19.020 MHz]
13m [21.450 - 21.850 MHz]
11m [25.670 - 26.100 MHz]

It never calculated full wave antennas properly in the original script so don't expect the [-f] option to work. I do not know how to code.

some example outputs. Red areas are to be avoided for random wire antennas.


In my area I only pick up between 49m to 16m. My ideal length is the center of large gaps (4th graph).
13m, 17m and 22m would be ideal for a 49m band to 16m band random wire (non-resonant) end-fed antenna.