Flight electronics
From Nakka's Xi series
http://www.nakka-rocketry.net/Xi.html
Altimeter: Raven
https://www.featherweightaltimeters.com/raven-altimeter.html
https://gyazo.com/8ec77ba270cb3bde7c533338614500b2
Telemetry for Recovery: BRB900 GPS
http://www.bigredbee.com/brb900.htm
250mw transmitter operating at 900 Mhz spectrum
https://gyazo.com/3b2b09adcb173b3a88e17feea5021a38
Receiver: Garmin hand-held GPS unit
https://optace.co.ke/product/garmin-etrex-10/
https://optace.co.ke/wp-content/uploads/2016/02/etrex10.jpg