@Harry Zachrisson thanks That will do for me I can transmit from 160 till 6 meter already :)

Hi Harry any idea when the Low option is on the market.?

My LF/MF antenna project failed :too high SWR. But I am still interested in the low stand alone WSPR but I have time a lot of time :) SO take your time to redesign and built one for me :)

thanks for the feedback have a nice weekend

The main question is : if the transmitter is SWR protected ? Or is it not needed due to the very TX power output.If the transmitter is swr proteced or is not needed then any antenna will do. Of course the longer and higher is better. If No protected is there then a special antenna ia deeded. You can think about magnetically loop or earth antenna's BTW when is the Desktop unit ready for delivery Leo OK8LEO