The programs for my LoRa based HAB tracker, and an updated testing report on the Semtech LoRa devices have been put on the dropbox;
I have changed the command uplink to use the lower LoRa rate of 98bps whilst the tracker transmits at 1042bps.
By doing this it is possible to have the benefit of using a good gain antenna to receive the data telemetry from the tracker.
The uplink commands would of course exceed the ERP limit, if 10mW was sent into the yagi. Since the 98bps has a 10dB advantage over the trackers transmissions of 1042bps, we can reduce the power output to minimum for uplink commands, still get the range needed, and not exceed the ERP limit.
So with say a 10dB yagi on a tripod, which is easy to manually point at the tracker, you should get the tracker payload back from a lot further than the 269km I got with my 5\6dB Diamond omni.
Any PICAXE enthusiasts who want PCBs, I have a few spare, you can have them for the cost of postage.