Radio Activation
Posted: Sat Feb 02, 2019 11:02 pm
I'm needing a bit of help from the ARS Massiv so I decided to make a thread on here to I can be sure to get a reply and be able to find it.
I posted a video in the Media forum of my electronic siren doing a pre-install test before it went up in the air. The siren works fine, it can activate via a button in IT and has worked without fault since installation. The problem I now have is this: Activation.
I had a meeting with the school Bursar about this and we settled on radio activation via DTMF. I have narrowed it down to two products:
The IC DTMF-8 which would work great but is expensive:
http://www.icircuits.com/prod_dtmf8.html
And the CSTech 8 output relay board which is very local to me and is half the cost:
https://cstech.co.uk/product/8-output-dtmf-decoder/
Both of these do the same job and have the same functions. The latter is a bit more agricultural when being configured, but it also has its own Morse code generator which can report back the states of all the outputs. Great for diagnostics.
The problem I now have is the radios to transmit the DTMF password then relay number strings and also receive them. This would be all fine and dandy if I wanted to pay for a CB radio licence and have to renew it annually but I'd really like it to just run like this:
https://www.youtube.com/watch?v=IGz75tfOtCM&t=140s [the video won't embed properly because it has an extra = which has to stay there]
I also need to do this on a budget as the DTMF-8 is expensive and so is a new radio.
So how do I go about doing this? What handheld ham radios do you know that can use family radio? Will I have to buy new Baufengs (as that's what is used in the video), or can I find an older, used set that can do exactly as I want (as in, have programmable DTMF strings and can be set to standard 10 etc. channel radio)? Please tell!
Please note: I am UK based in case you find any advertisements for this.
I posted a video in the Media forum of my electronic siren doing a pre-install test before it went up in the air. The siren works fine, it can activate via a button in IT and has worked without fault since installation. The problem I now have is this: Activation.
I had a meeting with the school Bursar about this and we settled on radio activation via DTMF. I have narrowed it down to two products:
The IC DTMF-8 which would work great but is expensive:
http://www.icircuits.com/prod_dtmf8.html
And the CSTech 8 output relay board which is very local to me and is half the cost:
https://cstech.co.uk/product/8-output-dtmf-decoder/
Both of these do the same job and have the same functions. The latter is a bit more agricultural when being configured, but it also has its own Morse code generator which can report back the states of all the outputs. Great for diagnostics.
The problem I now have is the radios to transmit the DTMF password then relay number strings and also receive them. This would be all fine and dandy if I wanted to pay for a CB radio licence and have to renew it annually but I'd really like it to just run like this:
https://www.youtube.com/watch?v=IGz75tfOtCM&t=140s [the video won't embed properly because it has an extra = which has to stay there]
I also need to do this on a budget as the DTMF-8 is expensive and so is a new radio.
So how do I go about doing this? What handheld ham radios do you know that can use family radio? Will I have to buy new Baufengs (as that's what is used in the video), or can I find an older, used set that can do exactly as I want (as in, have programmable DTMF strings and can be set to standard 10 etc. channel radio)? Please tell!
Please note: I am UK based in case you find any advertisements for this.