Re: Using FLDIGI with Vertex VX-1700
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You want the “DATA” jack which is a 6-pin mini-DIN connector. The sound cards produce analog audio, not serial data.
You can get this cable…
…and cut it in half and make two cables by putting the necessary connectors on the cut ends you need for the sound devices (can’t really call external sound devices cards).
From: firstname.lastname@example.org <email@example.com> On Behalf Of Daniel Miranda
Hi, David! Thanks again for the tips!
1. I'm not absolutely positive digital modes would be allowed because I do not have the actual text of the spectrum licenses, and public documentation is scarce on bands outside the amateur ranges. That being said, I found no obvious legislation precluding digital modes and the frequencies are exclusive, so, from a purely technical standpoint, there would be no interference with other stations. I will look into that as it is obviously important.
2. About the sound card setup: I researched signalink before, and I think it is awesome hardware, but the project is cost sensitive. The notebooks themselves are under $300 with shipping. I build a setup at home with simple external USB sound cards (about $10 each) and did a cross connection between two notebooks just to make sure I got a grasp of the concepts involved. The sound cards can be bought in a larger quantity so as to be easily replaced in case of failure. Spurious sounds like notifications are disabled since the notebooks are shipping with a plain Ubuntu 18.04 installation that I control. They will have only fldigi and the bare basics for operation in the field. Also, I will ship an SD card with the entire installed OS and a field manual so that if something goes wrong, the operator just plugs in the sd card and boots into a fresh OS install.
3. About the pinouts, I read in the manual that VX 1700 supports the CT-62 cable, which connects to the mini-din 6 port labeled TUNE (I double checked that, since it sounds really odd), not to the GPS port that is on the CAT protocol documentation (the one that the other Dave - W1HKJ mentioned) . The pinout for that port (https://www.manualslib.com/manual/994156/Vertex-Standard-Vx-1700-Series.html?page=10) reveals that it supports the serial protocol, and it does not seem that it is necessary to flip any switches in the radio.
This is my plan for the moment:
a. Look into the frequency licenses and make sure they allow digital mode operation (or CW at the very least).
b. Try to write an XML definition as Dave W1HKJ mentioned.
c. Failing that, try to hook up the official programming software to VX1700 to narrow down the problem. If it just works, the issue is with FLDIGI configuration, if it doesn't I need to try another computer or buy new cables. My friend got in touch with a supplier yesterday and he should have the software available sometime next week.
d. If the official programming software works, write a small program to try every possible serial port combination to try to get an answer from the radio.
e. Failing that, hook an oscilloscope to the CT-62 cable wires and listen to the VX1700 official programming software talk to the radio. In that case, I will have to get a plane ticket to visit my friend - which would be very nice but expensive.
f. Failing that, it's either your solution with the transistor or vox. I'm not prepared to invest in the signalinks yet, as after taxes and shipping they would be almost $200 each.
Thank you for the time you put in your answer. Also, I have to ask: is it ok to have technical discussions like this in this list? If it is inappropriate I will continue them privately.
Em dom, 23 de set de 2018 02:31, David Ranch <linuxham-fld@...> escreveu: