This is BRILLIANT, man. Have you tried putting another (say 220 rig) in there to send back telemetry on heat, times, noise, that sort of thing? Some guy in our club (Ft. Myers) tried to tell me that repeaters are illegal because they repeat our transmissions without our permission. I kind of just stood there trying to figure out if he was being serious. He was. So, I told him (he's big into tube rigs - as am I, it's a nice "warm" signal) that he needs to be careful when placing the radio on the table and making sure that it's secure. Further, I advised him not to move the radio unless he absolutely needed to, and never on its side. Why? Because, I said to him, "if you mount it sideways the electrons will fall off the plate." His reaction was a thing of legend, as he furrowed his brow and made a beeline for home. Yes, we can be jerks sometimes, but I *did* confess after the fact. Hah! JF
Dude I apologize for not commenting sooner - I have been very busy. But this is perfect, it works out great on bench tests and I did deploy one in the field on a small Maxon SM4000 series based GMRS repeater and it has preformed well now for a couple of months. I am planning on fabricating a PCB and a 3d printed case with rf shielding for this circuit and arduino. and hopefully make it rack mountable with a 1U face-plate that will have the LEDs on it as well as a USB port for programming..
I did the audio via some audio transformers. I could have gone direct with a pot to control gain similar to one of those Motorola 16 pin direct cables (suicide cables as I call them) but I wanted some isolation.
Excellent work, I am sure this will be put to use by hundreds of people very soon. Forgive my ignorance, I am not an engineer by trade, but in order to shunt out the PTT wouldn't you need a transistor on the end of this circuit?
This is wonderful. I am very green with circuit theory, though. What is the resistance of the resistors you’re using? Is that 330 ohms?
This is BRILLIANT, man. Have you tried putting another (say 220 rig) in there to send back telemetry on heat, times, noise, that sort of thing?
Some guy in our club (Ft. Myers) tried to tell me that repeaters are illegal because they repeat our transmissions without our permission. I kind of just stood there trying to figure out if he was being serious. He was. So, I told him (he's big into tube rigs - as am I, it's a nice "warm" signal) that he needs to be careful when placing the radio on the table and making sure that it's secure. Further, I advised him not to move the radio unless he absolutely needed to, and never on its side. Why? Because, I said to him, "if you mount it sideways the electrons will fall off the plate."
His reaction was a thing of legend, as he furrowed his brow and made a beeline for home. Yes, we can be jerks sometimes, but I *did* confess after the fact.
Hah! JF
Is the code for this project available?
Dude I apologize for not commenting sooner - I have been very busy. But this is perfect, it works out great on bench tests and I did deploy one in the field on a small Maxon SM4000 series based GMRS repeater and it has preformed well now for a couple of months.
I am planning on fabricating a PCB and a 3d printed case with rf shielding for this circuit and arduino. and hopefully make it rack mountable with a 1U face-plate that will have the LEDs on it as well as a USB port for programming..
as per my previous comment....
how do you get the audio to the tx radio...... is it as explained above
I did the audio via some audio transformers. I could have gone direct with a pot to control gain similar to one of those Motorola 16 pin direct cables (suicide cables as I call them) but I wanted some isolation.
Hello, Can you please share your diagram, thank you very much
Actually that is quite nice. Do you care to share the code with me I would like to add a function. And that would be ID voice or code.
Ac0y
Many thanks for this nice software. It works great om a storno cqf9000 repeater. I used one arduino nano for this project.
That is what i want to do use a nano for id also how do you get the code from him
just a quick question how are you sampling the audio into the arduino is it potential divider and decoupled via capacitor into pin 2 ???
many thanks from YO3IVA 73!
Big thanks for sharing, I made one.
Excellent work, I am sure this will be put to use by hundreds of people very soon. Forgive my ignorance, I am not an engineer by trade, but in order to shunt out the PTT wouldn't you need a transistor on the end of this circuit?