We seek to understand and document all radio transmissions, legal and otherwise, as part of the radio listening hobby. We do not encourage any radio operations contrary to regulations. Always consult with the appropriate authorities if you have questions concerning what is permissable in your locale.

Author Topic: FT8  (Read 218 times)

Offline NJQA

  • Full Member
  • ***
  • Posts: 166
  • Karma: +0/-0
  • Midland, VA
    • View Profile
« on: December 18, 2019, 1347 UTC »
A pet peeve of mine is when I hear someone claim FT8 operates with signals below the noise floor.  It works well, but there is no magic here.


Online redhat

  • DX Legend
  • ******
  • Posts: 1337
  • Karma: +19/-1
  • USA
  • Music is my drug.
    • View Profile
    • Email
Re: FT8
« Reply #1 on: December 18, 2019, 1800 UTC »
That's what happens when critical thinking is no longer common practice  :o

Somewhere under the stars...
WinRadio Excalibur/305 w/ a chi-town resonant loop, Kenwood KDC-U356 for mobile listening.
Please send QSL's and reception reports to xfmshortwave [at] gmail [d0t] com

Offline VK3BVW

  • Hero Member
  • *****
  • Posts: 578
  • Karma: +0/-0
  • Mount Evelyn, Victoria, Australia
    • View Profile
    • The Mount Evelyn DX Report
Re: FT8
« Reply #2 on: December 20, 2019, 2112 UTC »


Thanks for this! An interesting read.

Rob Wagner VK3BVW
Yaesu FTDX3000, Kenwood TS2000, Yaesu FRG100, horizontal loop,dipoles for 80, 40 & 20m, Par EF-SWL Antenna,
BHI NEIM1031 Digi Noise Eliminating Module,
MFJ-1026 Noise Cancelling Module, MFJ and Tokyo Hi-Power ATU

Offline Josh

  • DX Legend
  • ******
  • Posts: 4043
  • Karma: +7/-0
    • View Profile
Re: FT8
« Reply #3 on: December 20, 2019, 2205 UTC »
thread hijack!

I've yet to experience a mode where it was decoded and I couldn't still hear it clearly. I've heard from people I trust that they have had certain modes, like pactor iv, become inaudible but still print perfect copy, good psk sounds like noise anyway so a human might not be able to differentiate weak psk from noise but a machine can.

On a like note I think ROS mode, throb, or FM Hell take the first place in weak signal work on hf.

We do not encourage any radio operations contrary to regulations.

Offline IZS4

  • Hero Member
  • *****
  • Posts: 601
  • Karma: +0/-0
  • Florida
    • View Profile
Re: FT8
« Reply #4 on: December 21, 2019, 0329 UTC »
Personally I have no interest in digital modes, But has a CW op I see the benefits of the mode and Im all for keeping ham radio alive. One of the great aspects of the hobby are all the different options to pursue whether it be HF, VHF, UHF, SSTV, CW, Satellites, FM, digital or RTTY type operation .To each their own. If you enjoy it, then do it!  (Yes im sure I left out modes of operation)
Listening on an Icom-718 with a 135' OCF dipole or a RSP2.  Grundig G3 and MLA-30 when portable. When QRP I use a Hendricks PFR-3 I built. Coverage is 20,30 and 40 meters.