echo"If the ISS is overhead (check Gpredict) and in SSTV mode (see social media), you can receive images."
echo
elif["$choice"="2"];then
frequency=434900000
echo"Frequency is"$frequency
echo
echo"If your CubeSatSim is transmitting in SSTV mode (mode 6) you should get images."
echo"Note: if you see and hear an SSTV signal but don't get any images, the CubeSatSim signal might have a frequency offset. Try rebooting the CubeSatSim to fix."