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Ham Radio | Raspberry Pi 4 Linux | FT8 Digital on Icom 7300



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Explore ~ Ham Radio | Raspberry Pi 4 | FT8 Digital on Icom 7300

WSJT-X implements communication protocols or “modes” called FT4, FT8, JT4, JT9, JT65, QRA64, ISCAT, MSK144, and WSPR, as well as one called Echo for detecting and measuring your own radio signals reflected from the Moon. These modes were all designed for making reliable, confirmed QSOs under extreme weak-signal conditions.

JT4, JT9, JT65, and QRA64 use nearly identical message structure and source encoding (the efficient compression of standard messages used for minimal QSOs). They use timed 60-second T/R sequences synchronized with UTC. JT65 and QRA64 were designed for EME (“moonbounce”) on the VHF/UHF bands; JT65 has also proved popular and effective for worldwide QRP communication at HF. JT9 is optimized for the LF, MF, and HF bands. It is about 2 dB more sensitive than JT65 while using less than 10% of the bandwidth. With either JT9 or JT65, world-wide QSOs are possible with power levels of a few watts and compromise antennas. JT4 and QRA64 are optimized for EME on the VHF and higher bands, and especially the microwave bands from 2.3 to 24 GHz.

FT4 and FT8 are operationally similar but use T/R cycles only 7.5 and 15 s long, respectively. MSK144 is designed for Meteor Scatter on the VHF bands. These modes offer enhanced message formats with support for nonstandard callsigns and some popular contests.

As described more fully on its own page, WSPR mode implements a protocol designed for probing potential propagation paths with low-power transmissions. WSPR is fully implemented within WSJT-X, including programmable “band-hopping”.

FT8 — the latest digital bauble to capture the imagination of the Amateur Radio community — has been luring away many of those already using the popular JT65 “weak-signal” mode. FT8 is included in a beta release of WSJT-X, version 1.8.0-rc1.

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KuriosPCHenk660RJohn KershawBargain Basement Ham RadioHam Radio Kiwi Recent comment authors
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Ron C
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Ron C

Nice Vid Tom. TO say that the Pi can be frustrating is an understatement. Even worse for guys like me who don't have coding/linux experience, or knowledge! I did get this working on my Ras Pi 3b last year, but I also had to use an external sound card card interface (Tigertronics Signallink USB) for the FT-857….even more cables and settings. Using it on a Windows Surface connected to the 7300 is much easier.

Henk660R
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Henk660R

One remark: I have an FT891 + Raspberry Pi 3B+. I did not have the time to make everything work, but I found a very useful install-script which helps you to install/compile the latest version of hamlib (library for CAT-control) which also supports the FT891: http://indyham.com/news/new-fldigi-install-script-for-raspberry-pi-latest-version/It also installs the latest version of FLDigi for a number of other digimodes. Would be nice to know if this works on the Pi4/Raspian Buster as well.The version of WSJT in the Raspian software repository is probably outdated. You can get an current install package of WSJT for ARM-devices on K1JT's website. Keep up… Read more »

John Kershaw
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John Kershaw

Great to see a new video from you.  Dumb question?  What benefit does this have over a simple tablet running windows or Linux in the field and has WSPR, FT-8 on it like I'm currently doing.   I still need a monitor and keyboard?  Not being critical just confused of the benefit of it. Thanks Tom and keep up the great work.  JJK N6NRO

Bargain Basement Ham Radio
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Bargain Basement Ham Radio

Every new toy you get costs me $. Good vid and info!

Ham Radio Kiwi
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Ham Radio Kiwi

Great information Tom, love the R.P i have a few and turned them into hotspots for digital use. WSPR i have been running at times mobile from my 857D. Great way to find how conditions are.
Always look forward to your videos. Thanks.

Jordan Sherer
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Jordan Sherer

You should give JS8 a try Tom!

Steve Jones
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Steve Jones

Tom what power was you using on WSPR ?. I bought a Sota Beams WSPR lite stand alone unit that connects to any Android device and Transmits my signal to test antenna,s mainly, uses 1mW to 200mW, in the documentation about WSPR it explains that anything Up to about 500mW make is all that's needed.

KTSAdventures
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KTSAdventures

HEY there Tom, been following you a while. Really enjoy your stuff. Funny and interesting correlations. I am into Ham radio, worked in IT for Microsoft, lived in and was born in Texas, love little gadgets, and more….LOL. Texas has REALLY changed since I lived there in the 80s. Raspberry PI has interested me for a long time. I did some simple Pearl programing and ran a few servers at my home and wondered about some home automation using python etc… and then Alexa and…well do the math. I was hoping to see a program to incorporate a program that… Read more »

Douglas Dreger
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Douglas Dreger

Good video and informative. The drifting smoke is a nice ham radio zen effect.

Robert Sturgill K4HPY
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Robert Sturgill K4HPY

Thanks for the Vid I have the FT-891 and am looking forward for you Vid on that. some good information here I'm looking at doing this project now thanks for the suggestion. 73 K4HPY

David Harden
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David Harden

I may put a Raspberry Pi on my wish list, thanks to your video. I have a 7100, and the settings are probably similar to the 7300. By the way. the background music sounds terrific with my headphones on.

KuriosPC
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KuriosPC

Just came to leave a comment. Can't wait to see the video later.