Ultimate 3 WSPR (and other modes) beacon
The Ultimate3 QRSS/WSPR Transmitter Kit is the third version in the “Ultimate” QRSS/WSPR kit trilogy. It can produce QRSS, Hell, WSPR, Opera and PI4 slow-signal modes anywhere from audio to 10m and above. Plug-in LPF filters are available for all 12 HF/MF/LF bands.
The price is USD $29.00. To order please visit QRP Labs.
The Ultimate 3 is probably the lowest cost beacon available. I still have my unbuilt kit awaiting better health to build, although several kind folk have offered to build mine for me. Jay W5OLF kindly supplied me a 10m 500mW, single PCB, WSPR beacon (WSPR-AXE-CW) ready assembled and that has blown me away: it has been copied in every continent on 10m. The Ultimate 3 is the more flexible design but the WSPR-AXE-CW is an ideal tiny WSPR only beacon.
My Ultimate 3 kit was ordered with GPS, but it was supplied without this, but with an extra PCB – I think I got the wrong order. I really should write to Hans Summers, but I have been too unwell. For now, the kit remains unbuilt. I intend to build it when I am fitter and less clumsy, hopefully in 2015.
Hi, now that we are informed of the mistake on the order, QRP Labs are replacing the missing GPS item. The new GPS is type SKM61 http://www.hanssummers.com/ultimategps3 , which is more sensitive than the earlier model and runs from 5V supply. 73
I would like to play with that SDR and compare it with the AirSpy
I ordered one yesterday.