New Open Source WSPR Transmitter with GPS for only 39$

Image icon The WSPR Mini368.59 KB

Hi all.
I just released my latest low power, low cost WSPR transmitter.
This one has a built in GPS with built in antenna and is optimized for low current consumption and weight.
It can be powered from a single LiPo or from USB.
It cost only 39$ and operate on a single band as set with a low pass filter (sold separately).
Any band from 137kHz to 70 MHz
More info here :

For a overview and comparison of all my WSPR transmitters go here :

//Harry - SM7PNV