Flying Squirrels #5 – The Flight controller

The flight controller of Flying Squirrel #1 is the brains of the flight. The controller will measure the environment around the balloon, format the data into a Telemetry message and transmit the telemetry signal back to the ground using the chosen protocol (FSQ) for the flight.  The flight controller will also manage the power to […]

Flying Squirrels #3 – Can you hear me now? – Building a transmitter

Now that I have a list of protocols and a general plan to transmit telemetry on the 20 meter Ham bands, how do I get “on the air”?  This post will describe the transmitter hardware for the telemetry system. Generating Radio Frequency – There is a board for that. After a lot of searching an […]

Testing WSPR mode

WSPR How low can you go? (And still be heard) As part of my Flying Squirrel project, I wanted to know, “Would my little Si3551A based telemetry transmitter,sending WSPR,  ever be heard by anyone?” So I conducted the following test. I configured the Radio gear to send the absolute minimum signal possible, on the 20m […]