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CTCSS decoding & 1750 Hz

Posted: Thu Jan 21, 2021 1:23 pm
by zetagi
Hello, thank you for the nice PowerSDR Software.
it is possible to add a CTCSS decoding option and a 1750Hz Burst Button?
I use a 2m Transverter on a Flexradio 3000 and would like to see more options for FM relay operation :D
vy 73
Phil

Re: CTCSS decoding & 1750 Hz

Posted: Thu Jan 21, 2021 10:53 pm
by ke9ns
How does the 1750hz tone burst work?

Since its clearly in with your voice audio, does it burst for certain length of time after you PTT the radio on every transmission?
Or does it just need to burst once every so many minutes?

Darrin
ke9ns

Re: CTCSS decoding & 1750 Hz

Posted: Fri Jan 22, 2021 10:45 am
by zetagi
the 1750 is only needed for a short time to open the repeater (200-500ms). most radios have a "Tone button" to open the repeater once by pressing PTT at the same time. If the repeater drops out, it must be opened again with the 1750 Hz after 10-20s.

These are unfortunately still old loads on European repeaters :lol:
not all of them have CTCSS yet

Philipp

Re: CTCSS decoding & 1750 Hz

Posted: Fri Jan 22, 2021 10:56 pm
by ke9ns
so do you want this as a on/off 1750hz button that will insert a 1750 tone for 400msec at the start of each PTT ?


Darrin
ke9ns

Re: CTCSS decoding & 1750 Hz

Posted: Sat Jan 23, 2021 2:22 am
by zetagi
i have imagined as a pushbutton that send the 1750 as long as i press it.
The deluxe version would be if the PTT is activated in addition. it would be enough to press the 1750 "Tone" button and manual the PTT. I only need it to open the repeater once at the beginning of the QSO.

i currently use an external tone generator (with my cell phone) to briefly play the 1750 via microphone

Re: CTCSS decoding & 1750 Hz  Topic is solved

Posted: Sat Jan 23, 2021 5:51 pm
by ke9ns
Go download .188
I added a 1750hz button (just below the CTCSS button).
F5 key also triggers this button
If the button is RED, then its waiting for a PTT or MOX from you. It will send a 1750 tone for .350msec, 1 time only.

Let me know.

Darrin

Re: CTCSS decoding & 1750 Hz

Posted: Sun Jan 24, 2021 2:41 am
by zetagi
wow, thank you very much!
it works perfectly.
brilliant idea how you have implemented. :idea:
Philipp

Re: CTCSS decoding & 1750 Hz

Posted: Tue Jan 26, 2021 12:11 pm
by ke9ns
Just to let you know....

Update .189 I needed to change the 1750hz Function key to F7

As the Voice keyer buttons are now: F3, F4, F5, F6

Darrin
ke9ns

Re: CTCSS decoding & 1750 Hz

Posted: Wed Apr 14, 2021 10:01 am
by DJ4PZ
Hi Darrin,
I have a small problem with the duration of the 1750 Hz tone.
For opening the some old repeaters in Germany the duration of the tone is too short with 300mSec.
We need between 400ms and 600ms duration. Would it be a big effort for you to program this time variable ?
It would be optimal if we could enter the duration ourselves, with a maximum upper limit of 900mSec.

Best regards,
Hans, DJ4PZ

Re: CTCSS decoding & 1750 Hz

Posted: Wed Apr 14, 2021 10:07 pm
by ke9ns
Go and download .197. I added a length adjustment next to the 1750 button

Darrin
ke9ns

Re: CTCSS decoding & 1750 Hz

Posted: Thu Apr 15, 2021 9:58 am
by DJ4PZ
Darrin, thank you for the quick implementation of my suggestion. Have performed a few attempts, with success.

Hans, DJ4PZ