Search found 3 matches

by cmwang
Sun Apr 19, 2020 6:01 am
Forum: GD-77 / DM-1801 / RD-5R / GD-77S
Topic: Rx wider frequency range
Replies: 25
Views: 17351

Re: Rx wider frequency range

I had no opinion for extended UHF frequency range. But I do not recommend to extend VHF frequency down to 12xMHz for following reason. 1:The civilian aeronautics use 118-137MHz in AM. Since the RDA1846 does not support AM at all,it would be meaningless to use RDA1846 to receive 12x-137MHz. 2:Support...
by cmwang
Thu Apr 16, 2020 6:40 am
Forum: General discussions
Topic: DMR TGID length??
Replies: 4
Views: 3089

Re: DMR TGID length??

The talkgroup ID is a 24 bit number, which means that technically you could have an 8 digit number (as long as the first digit is 1) Thanks,the TGID did use 1 as first digit,so it's ok for those talkgroup. BTW,the OpenGD77 does not recognize ARS correctly,it shows ARS as Private Call. It would bett...
by cmwang
Thu Apr 16, 2020 1:25 am
Forum: General discussions
Topic: DMR TGID length??
Replies: 4
Views: 3089

DMR TGID length??

I use OpenGD77 on DM-1801 as ultra low cost communication receiver. Some utility communications in Taiwan use 8 digits TGID. But OpenGD77 could specify only 7 digits in VFO mode. Is there any length limit for DMR TGID??