AppRank

Reviews: What People Think About Rattlegram

St. George Paddler

Rating: 4/5

Really nice application that allows the transmission of text via two way radio. Only reason I don’t give it 5 stars is that you don’t or I haven’t figured out yet, how to delete previous messages. I would like to start a new session without seeing the history of past transmissions.

GlassOfNut

Rating: 5/5

Love this app, I use it with a digirig lite and it works perfect like that. I would also like to see KISS TNC support if possible!

Agg20000000000

Rating: 5/5

I downloaded for my iPhone. At the bottom it says unable to create decoder. How can I fix?

About Rattlegram

COFDMTV is based on COFDM (coded orthogonal frequency-division multiplexing) technology:
- 160 ms long OFDM symbols
- 6.25 Hz per sub-carrier
- 1/8 guard interval
- differentially encoded PSK (phase-shift keying) modulation
- systematic polar codes for forward error correction

Currently Modes 14, 15 and 16 are supported:
Using either SPC(2048, 1392), SPC(2048, 1056) or SPC(2048, 712) with CRC32C aided SCL decoding and differential QPSK modulation for the payload.
Only a bandwidth of 1600 Hz is needed and the transmission of either 85, 128 or 170 bytes take about one second with the leading noise and fancy header disabled.

File size: 707584

Launched countries: USAUCACNFRDEGBITJPKRRUDZAOARATAZBHBBBYBEBMBRBGCLCOCRHRCYCZDKDOECEGSVFIGHGRGTHKHUINIDIEILKZKEKWLBLTLUMOMGMYMTMXNLNZNGNOOMPKPAPEPHPLPTQAROSARSSGSKSIZAESLKSECHTWTHTNTRUAAEUYUZVEVNBOKHEELVNIPYAFGEIQLYMAMZMMYEBJBFCMCGCIJOLAMLSNTZUGZMZW