I created a video showing how to upgrade the Firmware on a Desktop HW1.x using the Arduino IDE Software. Maybe someone finds it useful. Make sure the correct Product_Model is set in the source Firmware file! // Product model. WSPR-TX_LP1 =1011 // Product model. WSPR-TX Desktop =1012 // Product model. WSPR-TX Mini =1017 // Product model. WSPR-TX_LP1 with Mezzanine LP4 card =1020 // Product model. SSG =1024 // Product model. WSPR-TX Pico =1028 // Product model. WSPR-TX_LP1 with Mezzanine BLP4 card =1029 const uint16_t Product_Model = 1012; 73 Roland

Is there a list of which Firmware runs on which Desktop Hardware Revision? I have some rather old 1.0 HW in use and wonder if there is any limitation on the Firmware version which can run on the device. 73 Roland

I am the Founder of the Intl. WSPR Beacon Project running 20+ Beacons worldwide We have multiple Beacon Operators reporting the same Problem with their Desktop 80-10 Transmitter. After running for a while (days to weeks) the Beacon stops transmitting. All LED's are off. Unplugging the USB Power cable and re-plugging it again resolves the issue for a while, but it keeps coming back. Affected so far: N6UA,W9VW,5T5PA,CP6AA,VK8MA,IU2PJI I am curious to know if other users have seen similar behavior and/or if there is a fix for it. 73 Roland

Can the WSPR Desktop Transmitter run at 100% Duty cycle for an extended period of time (24x7x365)? This is for a permanent multi Band Beacon use case. Cheers Roland

On the Download site, the latest version listed for the WSPR Desktop is 0.85. On my WSPR Desktop, I can see version 0.95 installed. Can you enlighten me? Thanks

For a permanent WSPR Beacon Project, I need to cover 5 Bands 80, 40, 20, 15 and 10m Is it possible to stack 2 Mezzanine LP4 cards on top of the LP1 and use up to 8 bands? Or can the LP1 onboard LPF's (user supplied) be used in conjunction with one Mezzanine LP4 add-on card ? Thanks Roland