PE1RAH har nu lagt ut en video med information om sin nya transponder.
Den här transpondern är så liten till sin storlek att den bör gå att använda i cubesat programmet.
Improved Ultra Small Linear Transponder video
Hi AMSATs,
I put some new video on youtube about my thiny linear transponder.
Its a slighty improved version, with better distortion behaviour and some extra features, like a low voltage switch off circuit.
Some general details:
Its a Mode-UV transponder with 23dBm PEP output on 2m. It runs on 3.7Vdc, power switches off when voltage drops below 3.5Vdc.
Bandwidth is 30kHz, and total weight is around 22 grams. It has an onboard beacon that is fully programmable (message, frequency and power).
The RX and TX frequencies of the transponder are user programmable, and all oscillators are locked to an onboard TCXO.
This improved version has also the option for an external reference oscillator input, and has a tap at 70cm input and a tap on its 1st IF.
The taps are very usefull to interconnect to other transponders or connection to external telemetry modems.
I am presenter and filmer at the same time.
Please forgive me about the shivering image hihi…
More information will follow…
73 de PE1RAH
William Leijenaar