Rattlegram vs eHamHub

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.

eHamHub is the social home for amateur radio operators — built by hams, for hams. Whether you're chasing DX on 160m, experimenting with FT8, or just love the culture of the bands, eHamHub brings your on‑air life online. YOUR CALLSIGN, YOUR IDENTITY Your callsign is at the heart of everything. Create a rich profile with your bio, shack equipment (rig, antenna, software), and operating preferences. Connect with operators around the world who share your passion. SIGNAL LOGGING & PROPAGATION Log your contacts with frequency, mode, and UTC timestamp. Share signal reports and propagation discoveries with the community. Every log is a real QSO — no fake engagement. DISCOVER & CONNECT Follow other operators, comment on their logs, and send direct messages. Find contests, local events, and nets. The amateur radio world is more connected than ever. PRIVACY YOU CONTROL Your email, password, and private messages stay private. You choose what to share publicly — your callsign and profile can be as open or discreet as you like. We never sell your data, and our practices comply with applicable data protection laws and regulations, including GDPR. WHAT MAKES eHamHub DIFFERENT? - Built exclusively for ham radio — frequencies and bands are first‑class. - Time is always UTC, the way it should be. - Respectful, authentic community with zero inflated numbers. - Tradition meets modern design: celebrate a century‑old hobby with a fresh, intuitive interface. Whether you're a seasoned contester or a newly licensed technician, eHamHub is your go‑to platform to log, share, and celebrate the world's greatest hobby. Join the airwaves. Share the experience. Welcome to eHamHub. 73!