Sats don’t wait for you to fix software issues. Nothing is more annoying than having a working setup that stops working when that special RS-44 pass with US-Europe coverage comes up. This will clutter your setup and workflow.
So WSJT-x must control the PTT, using accurate time, but USB-A is already in use for doppler control. This will block the PSK reporter function in WSJT-x from sending spots to the Reporter network. Even more, when the transceiver frequency in WSJT-x changes, it will not match a preset and the frequency display background shows up in red. There is no need for WSJT-x to set or read transceiver frequency. Satellite tracking programs like MacDoppler or SatPC32 set frequency, mode and tone (for FM sats). Credits go to Alex, AC9DX for pointing this out to me. But can you work FT4 on sats using the USB cable only? Is there a One Cable Solution? Yes, there is, and it involves the use of the USB-B port. The IC-9700 supports up to three CI-V interfaces, one via USB-A, one via the Remote jack and one via the Data port. Having a dedicated configuration for FT4 on sats makes your workflow of getting ready for a satellite pass simpler.įinally there is CAT transceiver control. Configuration selection can also be done using a command line option. In addition, WSJT-x supports the concept of configurations that can be switched via the menu.
MACDOPPLER HOW TO
On Windows, ample guides can be found on how to do this. This requires two WSJT-x sessions to run in parallel. In order to listen to your own downlink signal, a receive-only/monitor session of WSJT-x is preferred. But I think that 10 Hz should do it as well.
MACDOPPLER UPDATE
Many set this to 0, meaning highest update rate. SatPC32 also supports update rate based on frequency error. MacDoppler only supports update rate, which can be set up to 10 times per second. The doppler control is basically identical to SSB, however the update rate and/or the maximal frequency error must be set different. A number of challenges come together doing FT4 on sats such as accurate doppler control and time, multiple WSJT-x applications and CAT transceiver control. The last months I’ve been quite active on FT4 on LEO satellites.
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