25-06-2018, 01:50 PM
https://amsat-uk.org/2018/05/19/dslwp-sa...nar-orbit/ has some details, but there's no mention of JT modes, only GMSK.
'Satellite A will transmit 500 baud GMSK with 1/4 turbo code on 435.425 MHz and 250 baud GMSK with 1/2 turbo code and precoder on 436.425 MHz, and satellite B will transmit 500 baud GMSK with 1/4 turbo code on 435.400 MHz and 250 baud GMSK with 1/2 turbo code and precoder on 436.400 MHz, in every 5 minutes by default. Each transmission will last about 16 seconds.' and it links to a Linux software to decode the data.
BUT - http://lilacsat.hit.edu.cn/wp/?page_id=676 does mention a JT65B mode beacon.
BUT BUT - there seems to be conflicting information floating around because here - http://destevez.net/2018/06/dslwp-b-dete...ment-yagi/ it mentions JT4G !!
I'm trying to find clear information - frequency/mode/transmission type but I'm having problems.
So the questions are:
Frequency - 435.425 MHz, 436.425 MHz, 435.400 MHz or 436.400 MHz ??
Mode - JT65B, JT4G or GMSK ??
Transmission mode - USB, FM ??
Schedule that the sats aren't behind the moon ??
Some more info on Twitter as well, this might be more useful for current status - https://twitter.com/bg2bhc
'Satellite A will transmit 500 baud GMSK with 1/4 turbo code on 435.425 MHz and 250 baud GMSK with 1/2 turbo code and precoder on 436.425 MHz, and satellite B will transmit 500 baud GMSK with 1/4 turbo code on 435.400 MHz and 250 baud GMSK with 1/2 turbo code and precoder on 436.400 MHz, in every 5 minutes by default. Each transmission will last about 16 seconds.' and it links to a Linux software to decode the data.
BUT - http://lilacsat.hit.edu.cn/wp/?page_id=676 does mention a JT65B mode beacon.
BUT BUT - there seems to be conflicting information floating around because here - http://destevez.net/2018/06/dslwp-b-dete...ment-yagi/ it mentions JT4G !!
I'm trying to find clear information - frequency/mode/transmission type but I'm having problems.
So the questions are:
Frequency - 435.425 MHz, 436.425 MHz, 435.400 MHz or 436.400 MHz ??
Mode - JT65B, JT4G or GMSK ??
Transmission mode - USB, FM ??
Schedule that the sats aren't behind the moon ??
Some more info on Twitter as well, this might be more useful for current status - https://twitter.com/bg2bhc