1750hz tone

Forum for discussion about the Langstone Microwave Transceiver that shares some features with the Portsdown. Wiki: https://wiki.microwavers.org.uk/Langstone_Project
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DL5BCA
Posts: 109
Joined: Tue Jun 30, 2020 11:59 am

1750hz tone

Post by DL5BCA » Sun Jun 13, 2021 1:25 pm

Hello,
can the 1750Hz tone be changed so that it is transmitted as long as the button on the display is pressed?
We have repeaters here that require a long ringing tone. One repeater even 5 seconds!
73 Thomas
DL5BCA

g4eml
Posts: 447
Joined: Thu Apr 26, 2018 9:36 am

Re: 1750hz tone

Post by g4eml » Sun Jun 13, 2021 4:18 pm

Not a simple thing to do unfortunately. At the moment the code does not register when buttons are released. Maybe in the future.

Colin.

DL5BCA
Posts: 109
Joined: Tue Jun 30, 2020 11:59 am

Re: 1750hz tone

Post by DL5BCA » Sun Jun 13, 2021 5:28 pm

Hello Colin,

Thank you very much for the quick reply.

Another question:
PINs are currently set for PTT and band switching.
If the Raspi in the shack and operate the Pluto via Ethernet, possibly many meters away, control with an Arduino would be desirable.
First I wanted to evaluate the PINs on the Raspi and send commands to a second Arduino via the network.
Now it occurred to me that Raspi could send the orders himself.
is that possible?
73 Thomas
DL5BCA

g4eml
Posts: 447
Joined: Thu Apr 26, 2018 9:36 am

Re: 1750hz tone

Post by g4eml » Sun Jun 13, 2021 5:47 pm

The code already sends the PTT and the lower 3 band bits to the Pluto GPO Pins for exactly what you are describing. You just need to interface to the Pluto internal signals.

If you need more band bits then something like you suggest might be possible.

Colin.

DL5BCA
Posts: 109
Joined: Tue Jun 30, 2020 11:59 am

Re: 1750hz tone

Post by DL5BCA » Sun Jun 13, 2021 6:06 pm

I meant if the Langstone software could send commands over the network to an Arduino?
The Arduino could evaluate the commands and switch the corresponding pins on the Arduino.
73 Thomas
DL5BCA

g4eml
Posts: 447
Joined: Thu Apr 26, 2018 9:36 am

Re: 1750hz tone

Post by g4eml » Sun Jun 13, 2021 6:21 pm

It could be done. But not by me at the moment!

DL5BCA
Posts: 109
Joined: Tue Jun 30, 2020 11:59 am

Re: 1750hz tone

Post by DL5BCA » Mon Jun 14, 2021 5:52 am

Hello Colin,

thank you for the quick answers.

Do these 8 band select outputs work?: 8 Band select Outputs on pins 28, 35, 7, 22, 16, 18, 19, and 21.

What's the difference between: Band Bits (Rx) and Band Bits (Tx) that can be set in the setup?
73 Thomas
DL5BCA

G4FRE
Posts: 155
Joined: Fri May 26, 2017 6:57 am

Re: 1750hz tone

Post by G4FRE » Mon Jun 14, 2021 6:42 am

They all work fine on my Langstone and are very useful for automatically switching external transverters

Having two lots of settings Band Bits (Rx) and Band Bits (Tx) allows one to generate a signal just on transmit that can be used for a specific band's transverter ptt signal

Dave
G4FRE

DL5BCA
Posts: 109
Joined: Tue Jun 30, 2020 11:59 am

Re: 1750hz tone

Post by DL5BCA » Mon Jun 14, 2021 8:10 am

Hello Dave,

thank you for the answer.

Then I'll make my first attempts with it and attach an Arduino to the Raspi to evaluate the relevant pins.
73 Thomas
DL5BCA

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