Telescopeman discusses 4 free software programs that decode jt65 digital signals. This page contains a description of many of the popular hf digital modes software. We recommend the free dimension 4 program to keep your clock in sync with an accurate internet time service. In recent months my ability to work dx on the hf bands has been utterly transformed thanks to some exciting new software for the jt65jt9 weak signal data modes. While there are a few software packages available for jt65, i chose to use wsjtx.
I worked hard on optimizing the code, and version 4. Light technical presentation jt65 jt65 was created by k1jt, joseph taylor, a radio astronomer and also a nobel prize winner in 1993, mainly for eme earth moon earth communication or moon bounce at vhf frequencies. For software he uses linrad or gqrx as the receiver, and wsjtx or. Make sure you got your audio input and outputs correct. Large w6cqz jt65hf is an adaptation of the jt65a protocol with an emphasis upon its usage in the high frequency amateur bands to facilitate weak signal communications and experimentation. My favorite ham radio software hamfesters radio club gregory d. Jtdx feature rich software for ft8 and other jt modes. Welcome to the jt65a digital mode for high frequency weak signal communications. Hi doug, for jt65jt9 i use wsjtx from k1jt togehther with jtalertx.
If you dont have internet access at home, or are working roverportable, then you might. I recently downloaded jt656hf by w6cqz and have on several occasions monitored 14. After fiddling around with ft8 for a few hours, im coming to the conclusion that it is more sensitive to small deltats than jt65 or jt9. Welcome to my personal page,website about radio amateur digital modes since 1999. Also includes a link to help you identify the sounds of ham radio digital communications signals.
Usb audio interfaces for digital modes jim brown k9yc k9yc. Video processing source code for algorithms and tools used in software media pipelines. Here are some of my screen shots from the activity on the bands. Frequency drift can make decoding impossible, or force both stations to have to turn on afc which results in a modest reduction in coding gain. Jt65hfcomfort an extension of the excellent decoding software jt65 hf by joe w6cqz for amateur radio digital mode jt65. Ive run jt65 and jt9 for years with reported deltats in the zero to 1. When using the jt65hf software, youll need to adjust your thinking about the waterfall display. This has brought forth a multitude of decoding software, some free, others not. The decoding process takes longer in jt65 than in other wsjt modes. Further improvements have been made to the jt65 decoding algorithm.
Wsjt is a computer program used for weaksignal radio communication between amateur. Advanced automatic sequencing and qso selection features. Amateur radio software for transmissionreception of jt65 protocol on hf bands 2m 160m important. A video of his rtlsdr raspberry pi 3 decoding ft8, jt65 and jt9. The program is called simjt, and can be downloaded from. The video author uses two videos, one video embedded inside the other, to demonstrate the sending and receiving of jt65a digital signal. Jt65 is a popular amateur radio mode suitable for long distance weak signal communications. Additional ft8 and jt65 decoder options which can provide improved sensitivity.
Charging my phone within 3 feet of my sdr makes tons of noise. I am trying to promote jt65a and jt65hf as digital mode options for the amateur community. Jt65a and jt65hf software weak signal digital mode on hf. My name is sergey, i was born in the 1963 year and live in moscow, russia. Jt65 eme logger is to be used only for the purpose of discussing matters related to amateur radio communications. Just download and install the software on your pc from the below given link and eliminate all the limitations and restriction that mobile companies impose on your devices.
An other video example of a jt65a qso using jt65hf software. A sdr pan adapterspectrum scope for the yaesu ftdx5000 transceiver. The developer list claims 20 db ability, which is significantly less than 27 on jt65, but only having a 15 second tx window more than makes up for it in my book. Jtdx is an open source ham radio program for hf jt65 and jt9 modes. I previously commented that my tablet clock wouldnt sync, making it useless for synced digital modes. First time decoding of jt9 digital mode using wsjt x. Generic image decoder the generic image decoder is a package for decoding a broad variety of image formats, from any data. Jt65hf hb9hqx edition amateur radio software for transmissionreception of jt65 protocol. Welcome to the jt65a digital mode for high frequency weak signal. Mobile hf installation part 14 initial installation. Remote desktop screencapture of my raspberry pi3 monitor receiver on 40m amateurradio band with wsjtx and decoding ft8,jt65 and jt9. So if you use a dial freq of 5357 then you must ensure your audio is no higher than.
If its off by a second or more, it wont decode the messages. It is useful for testing the jt65 decoder and the relative capabilities of these two modes. Hi,i have been mostly working jt modes since getting my flex a couple of months ago. I have videos and help information on this link, and am trying to make this as useful to newcomers to the digital mode. Wsjt x software to decode ft8 jt65 wspr and more digital. Make sure that the audio level into the software is set correctly. As another poster stated, the deep search feature of wsjt doesnt play a role in this softwares signal decoding or reception process im not a programmer and the software appears to receive all the information presented to the operator over the air. Jt65jt9 data mode software for hf amateur radio weblog. This morning i ran across a weird issue with the jt65hf software not decoding jt65 digital messages. Signal reports range from 1 to 30 db signaltonoise in jt65. Was using jt65hf and decoding was going great, then no decodes. Ham radio digital modes software list and descriptions. The rsgb have placed a some advice on their website.
The jt65 encoding and decoding routines, also used in wsjt, are developed by k1jt. The jt65hf hb9hqx edition software, along with the source code, may be obtained from sourceforge. Weve recently begun experimenting with a wsjtx derivative for ft8 and other jt modes. The jt65 encoding and decoding routines, also used in wsjt, are developed by k1jt, joe taylor. Jtdx jt9 and jt65 modes for lf mf and hf amateur radio. Simjt generates jt65 and cw test signals with userspecified signaltonoise ratio. One of the main problems encountered by the newcomer to digital modes or digimodes as they are known is how to identify what they are seeinghearing. I promised earlier that i would do a short presentation of the jt65 and jt9 modes. The latest jt65 software uses a dial freq of 5357, in the uk we must not transmit beyond 5358. Most compatible time sync software for wsjtx flexradio.
Jt65hf amateur radio software for receptiontransmission of jt65a. Mobile hf installation part 34 screwdriver antenna installation raspberry pi satellite rotator interface. And mshv from lz2hv recompiled from source code of wsjtx with different gui implementation both for linux and windows os. A few days ago i saw a stonkingly strong to use an english colloquialism jt9 signal and still did not decode it. Using wsjtx software this is my first decoding of jt9 digital mode on the 30 meter amateur band. Jt65hf by w6cqz download jt65hf amateur radio software for receptiontransmission of jt65a protocol with an emphasis upon its usage in the high frequency amateur bands.
I run the same setup as i do with jt65 and works fine. The latest wsjtx release was modified for tests with user choice between two and threepass decoding. Ham radio and linux decoding pocsag pager transmissions with gqrx and multimonng duration. I have operated this software and hardware for the past 4months in this configuration without a problem until now. Jt65 relies on the computers clock being very accurate. Common psk31 frequencies all frequencies usb 3580 khz 7040 khz 14070 khz 21070 khz 28120 khz common jt65 frequencies 3576 khz 7076 khz 14076 khz. Support jt9, jt65, t10 and ft8 is released unde gnu licence, by ua3djy and es1ja.
Jt65hf any versionmode of jt65a is a time kller to say the least. Ham radio pro for windows 10 free download and software. I did manage to decode some jt65 last week on 20m, but last night i was completely. With free universal mobile phone unlocking software you can use your cell phone device of any company of which you are a user. Jtdx jtdx is a multimode software for amateur radio. That software logs correctly jt65 and jt9 without extensions.
Jt65 digital mode software category is a curation of 9 web resources on, wsjtx, jt65hfcomfort, jt65hf by w6cqz. Since i started using jt65hf software, i have had the volume set to zero on my radio. If you are interested in ham radio then this collection of 380 highly educational video tutorials will get you well on the way. A checklist for optimizing jt65b and wsjt9 144mhz eme stations.
I have a very modest hf station now due to living in a conservation area with antenna restrictions and can only use a stealth antenna comprising. Amateur radio software for transmissionreception of jt65 protocol. The software does not automatically advance the conversation for you. Discussion in working different modes started by k0han, nov.
That problem seems to have mysteriously fixed itself, and now my ntp service shows that my clock is rarely off by more than 15ms every 15 minutes. The truth about mobile phone and wireless radiation. The list and descriptions have been compliled from various sources and descriptions on the internet and the ham radio world and should be as up to date as possible. Unlike wsjt which if set to wide decode only decodes the strongest message, w4cqzs jt65hf software will decode all messages in the 2000 hz receive bandwidth window which is shown on the waterfall. Jt65hf setup and operations guide jt65hf version 1. Software for amateur radio weaksignal communication.
All my other decoding software works fine but this rev. Latest tests demonstrating high efficiency of the threepass decoding on the overcrowded hf bands. New software for vhf meteorscatter communication, qst december 2001, pp. The alternative is to place your dial on 5355 and then you have access to 3khz. Jt9 can have tentimes the signals but decoding of overlapping signals is much less likely to happen. He also demonstrates proper sound levels, and so forth. There are new modes being invented all the time and keeping track of these is turning into a full time job. Ive been doing more hf listening with my sdr but i am having problems decoding jt9jt65. This way, i can run the software around the clock without disturbing the xyl. Download all mobile phone unlocking software free for pc. It can decode signals many decibels below the noise floor in a 2500 hz band note that snr in a 2500 hz band is. Amateur radio software for transmissionreception of.
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