Any ameteur radio operaters in here? VOIP to radio
giqcass:
Right now the problems I'm having are as follows.
A Buzz or hum
Solution Ground loop isolator
Overload of inputs
Solution Line Converter
Battery life
Solution new phone ( For testing I'm using my cordless because its the only phone I have with the correct jack.)
Click sound
This may be fixed by the line converter/ground loop isolator. If not it may be fixed by a small capacitor.
I can't test TX and RX at the same time until I receive the ground loop isolator due to the wiring of my radio. It would stay in RX only because the PTT button would remain active.
One of the parts I'm waiting for in the mail is a Line converter with a built in ground loop Isolator.
The other part I'm waiting for is my mini phone so I can stop using my cordless. Those parts are in my diagram. I simply have not been able to test them because I haven't received them
Currently I can dial in to my radio and listen by sip address or phone number. I have called it from my cell phone, a local phone, and by extension.
A company makes a repeater controller called a Radio-Tone duplex repeater that I believe would hook just about any radio into this system with a custom made cable. If the radio you are using has VOX built in that piece of hardware should not be needed.
giqcass:
Quote from: QBZappy on November 29, 2013, 02:12:24 pm
@giqcass
Why would you setup the OBi in paging mode? This would limit using the OBi like a normal phone in that way. Not knowing anything about ham radio, I suppose this recreates the amateur radio experience.
I just realized you might have thought I set both phone ports to paging mode. I was not clear on that point. Only one phone port is set to paging mode.
giqcass:
My permanent phone for this probably won't arrive for a while but the Line Converter/Ground loop isolator allowed me to make it fully functional and it really helped the sound quality. Buzz, hum, clicks, and clipping all went away. Now I need to set my obi so the paging phone port is password protected. It wouldn't be good if a random person accessed it and was broadcasting on my radio. I plan to mess around with the actual sound levels tonight when traffic is low. The line converter makes finer tuning possible. The VOX circuit in the radio takes a moment to activate. I don't think there is much I can do to fix that. A little "workaround" is to just tap a key on the phone before I start talking. I have tested it through my cell phone as well as a local extension. No problems either way.
I would like to get rid of the initial paging beeps when I first call in. I might be able to create a null value to replace it. Under "tone settings" there is a value I can change. ObiHai was nice enough to actually call it "Paging Tone" so it was easy to find.
EDIT: Just erase everything in the "Paging Tone" field. Tone Gone.
Fully working version using cordless phone. Time to clean up wiring.
sdb-:
The other thing a modern repeater controller can do for you is periodic call-sign transmission. I think I've seen simple repeater controllers using an arduino.
Or do it all with a Raspberry Pi and then you don't even need the OBi.
QBZappy:
@giqcass
Sorry to ask perhaps obvious, but can you explain some use cases for this setup. How can this be used as MOH?
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