Tag Archives: wsjt-x

IC-7300 setting to work with WSJT-X (and others)

I prepared a short how-to on setting up and ICOM-7300 with WSJT-X for working digital modes. If you can get this working, other digital software can be easily configured in a similar fashion. The file can be found on the “Projects” page or from this link:

ICOM 7300 Setup with WSJT-X

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Ham Shack Changes – Part I

I made some changes to the Shack today. First up was removing the FT-450D and the FT-2900R and their associated cabling. The FT-450D will become a portable station along with an MFJ-4230MVp Power Supply in a pelican style case. The FT-2900R will eventually make its way into my Ford F-150 for 2m mobile operation. The IC-7100 is now working as my VHF/UHF rig. I have kept the rig control and HF connection intact so I can also use it on HF. I have now installed a new Icom IC-7300 for my HF base rig. Installation was stratight forward and operation is VERY similar to the IC-7100. The main new features are of course the spectrum scope and the filtering. I have Ham Radio Deluxe, N1MM+, JTDX and WSJT-X configured and working with the new rig.

Today is the North America QSO Party so there is an active band on 20m to play with the new rig. I’ll review later as I have more operating time built up on the rig. Here is the new “minimalist shack”…so far:

20170819_210827390_iOS

Addtional changes in the works are:

  1. Swap my ground braided strap connections with copper strap.
  2. Install S9 Antenna and radial plate
  3. Secure the FT-450D and FT-2900R in their new homes

First DX Using FT8

Made my first two DX contacts to Australia today on 40m FT8. I need to get used to the faster pace but otherwise looks like it works pretty well. I added the FT8 mode to HRD logging software and am uploading the contacts as “DATA” to LoTW.

Exploring a New Digitial Mode: FT8

Joe Taylor is testing a new digital mode called FT8. The development version of WSJT-X software now supports this mode. FT8 ( Franke-Taylor design, 8-FSK modulation) works similar to the more familiar JT-65 and JT-9 modes except the T/R cycle completes in just 15 seconds thus greatly reducing the time to complete a QSO. The bandwidth of the signal is 47 Hz and the decoding threshold is -20dB.

ft8

I downloaded the development version this morning and tried FT8 on 40m. There were just a few signals but I did close my first QSO. Pskreporter showed my signals was also being received in Australia this morning. Some things to note: Logging may not work and I understand that LoTW does not recognize FT8 as of yet. Also, the software autoexecutes the T/R sequence once the QSO starts. You have less than 2 seconds to select the station to respond too!

 

Hints on setting up Receive on WSJT-X and JTDX

I spent some time reading the manuals for WSJT-X & JTDX to ensure that I was optimizing recieve. This seems to have improved after making the following changes:

  1. Make sure the PC is set for 16-bit 48,000 Hz sound card sampling.
  2. Turn off AGC
  3. Properly set microphone level. This is a two step process. In my case, I dropped the microphone level in Windows to 1%. Then using the Connectors–>ACC/USB AF Level control on the rig, dropped the level until I could get to 30dB receive with the slider at mid-scale. In my case the AF level was set to 10%.

These changes have helped with receiving weak signals. JTDX in particular typically decodes 15 to twenty stations when the band is busy.