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Kate-3 Transmitter (Mx210)
Firmware Version 7.13 Released: July 26, 2025 Download this firmware and save it to your local hard drive. Depending on your browser you may have to right click and select "save as..." 
Use the Flight Data Analyzer software to update your transmitter. Simply click 'Tools' on the Flight Data Analyzer menu bar and then select 'Update Firmware'.
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New features included in this release:
- Fixed a problem with the AUX pyro and SSR (Solid State Relay) when they are programmed to fire at or near apogee. The problem was causing the AUX or SSR output not to fire as expected. This was because the velocity can be either positive (going up) or negative (going down) near apogee depending on the timing of the velocity check. But the user settings menu only allows a user to specify positive velocities. Therefore, the velocity constraint check is now done using an absolute value function. This allows the velocity setting to properly constrain the firing without the user needing to worry about the velocity being positive or negative and allows the AUX or SSR output to fire as expected.
- Pyro battery voltage is now being recorded during the flight so that it can be plotted post flight. The transmitter system battery voltage was already being recorded but it too is now available to be plotted post flight with the latest version of the Flight Data Analyzer software program.
- Fixed a problem with the signal strength indicator value that reports the signal strength of the uplink commands sent from the receiver. If the signal strength was less than -128 dBm it would report an incorrect value.
- Added some diagnostic commands that are only used for testing in the factory.
Previous version of transmitter firmware (v7.11)