Home Explore Help
Sign In
vk2cjb
/
SatclockRS41
Watch 1
Star 0
Fork 0
Files Issues 0 Pull Requests 0 Wiki

Proving that Radiosondes can utilize Linear-transponder AMSATs

Branch: master
Branches Tags
SatclockRS41
ZIP TAR.GZ
vk2cjb f707e44d20 Update 'morse.c' 1 year ago
cmsis 8e9d0bd619 hello there to anyone finding this 2 years ago
cmsis_boot 8e9d0bd619 hello there to anyone finding this 2 years ago
stm_lib 8e9d0bd619 hello there to anyone finding this 2 years ago
syscalls 8e9d0bd619 hello there to anyone finding this 2 years ago
Makefile 8e9d0bd619 hello there to anyone finding this 2 years ago
README.md 8e9d0bd619 hello there to anyone finding this 2 years ago
arm-gcc-link.ld 8e9d0bd619 hello there to anyone finding this 2 years ago
config.h 8e9d0bd619 hello there to anyone finding this 2 years ago
delay.c 8e9d0bd619 hello there to anyone finding this 2 years ago
delay.h 8e9d0bd619 hello there to anyone finding this 2 years ago
f_rtty.c 8e9d0bd619 hello there to anyone finding this 2 years ago
f_rtty.h 8e9d0bd619 hello there to anyone finding this 2 years ago
init.c 8e9d0bd619 hello there to anyone finding this 2 years ago
init.h 8e9d0bd619 hello there to anyone finding this 2 years ago
main.c 8e9d0bd619 hello there to anyone finding this 2 years ago
maketledata.sh 8e9d0bd619 hello there to anyone finding this 2 years ago
mandelbrot.c 8e9d0bd619 hello there to anyone finding this 2 years ago
morse.c f707e44d20 Update 'morse.c' 1 year ago
morse.h 8e9d0bd619 hello there to anyone finding this 2 years ago
radio.c 8e9d0bd619 hello there to anyone finding this 2 years ago
radio.h 8e9d0bd619 hello there to anyone finding this 2 years ago
satpredict.c 8e9d0bd619 hello there to anyone finding this 2 years ago
satpredict.h 8e9d0bd619 hello there to anyone finding this 2 years ago
ublox.c 8e9d0bd619 hello there to anyone finding this 2 years ago
ublox.h 8e9d0bd619 hello there to anyone finding this 2 years ago
updatetledata.sh 8e9d0bd619 hello there to anyone finding this 2 years ago
util.c 8e9d0bd619 hello there to anyone finding this 2 years ago
util.h 8e9d0bd619 hello there to anyone finding this 2 years ago

README.md

SatclockRS41

This was an experiment to see if a ~100mW RS41 could bounce off a linear AMSAT -- as a desperation recovery method. To be sensible and good-operator about it, it uses orbital prediction code I wrote >20 years ago to find when a Linear bird is overhead.

I was told off for even thinking it, but the guy who said that then went off to score Twitter upvotes by doing it himself :p .. A SatNOGS receiver in Queensland heard our attempts from Newcastle and Adelaide.

VK5QI mentioned the frequency bands for the modes used (CW, SSB, etc.) in the linears tends to be rather tight. If putting this back into action again, doppler calculations should adjust the tx frequency to keep things in-band.

Again, the original code came from the RS41HUP project. I provide no apologies for reformatting the source to GNU indentation standards, as I use Emacs.

Bulk of the RS41HUP and my prediction code is GPLv2. The STM stuff is non-Copyleft.