FT2 Digital Mode

The fatest digital mode ever created

Downloads

Works with HamPass Client.

Instructions

  1. Download and install WSJT-X - Fresh install (more instructions here).
  2. Download and uncompress Decodium file in same WSJT-X installation folder

  3. Import QRG file in WSJT-X (File -> Settings -> Frequencies -> RIGHT click on list -> Import -> select ft2-bands.qrg)

  4. To automatically send your QSOs to HamPass and earn exclusive free awards and badges, simply configure the HamPass UDP client (instructions here).

Technical Documentation

English

Portuguese

Italian

Total sensitivity loss FT2 vs FT8: +10.22 dB

Broken down:

Integration time (+5.23 dB): Same 58 data symbols, but each lasts 48 ms instead of 160 ms — the decoder collects 3.33x less energy

Noise bandwidth (+4.77 dB): 150 Hz signal captures 3x more noise than FT8's 50 Hz

Sync efficiency (-0.28 dB): FT2 actually gains here — 78.4% data symbols vs FT8's 73.4%

Modulation, LDPC, GFSK: all identical → zero loss

Timing recovery (+0.5 dB): tighter tolerance (±50 ms vs ±200 ms)

Predicted FT2 sensitivity: -10.8 dB — measured in the field at -12 dB (IZ8VYF), which is within 1-2 dB of the theoretical prediction. The model is also validated by correctly predicting FT4's sensitivity within 1.5 dB.

Changelog

Nov 20, 2026 - Launch of official site of FT2 (ft2.it) by ARI Caserta.

Nov 18, 2026 - Launch of FT2 Friendship Award.

Nov 17, 2026 - HamPass dedicated FT2 page and platform support.

Nov 16, 2026 - Project lauch by Martino Merola, IU8LMC.

Old versions