Mdc1200 (merged)

[centuryvrproductions]

Hello, I am wondering why on some radios with the Siginaling, theres a beep before or after the "chirp"?
does it come from the radio or is it a repeater thing? Just wondering because it sounds cool

 

[firefive76]

Hello, I am wondering why on some radios with the Siginaling, theres a beep before or after the "chirp"?
does it come from the radio or is it a repeater thing? Just wondering because it sounds cool

Most radios I believe can be set up to beep when the signal is sent before the transmission. The beep just means that the signal was sent and you can speak now. If you are talking about the triple beep, that is a talk permit tone used on trunking radios.

 

[centuryvrproductions]

Public Saftey repeater courtecy tone????

Hi, After listening to a fire repeater in my town, I noticed that any time that somebody begins to talk while the repeaters transmitter is still on from the last person talking (tail) there is a two tone noise Beep (High) Beep (low). I also hear this when Disbatch begins to talk.

for when somebody talks right after another person quickly, I hear "Beep Beep, Chirp". I know what the chirp is (MDC1200) but whats the "beep beep"?

 

[centuryvrproductions]

Most radios I believe can be set up to beep when the signal is sent before the transmission. The beep just means that the signal was sent and you can speak now. If you are talking about the triple beep, that is a talk permit tone used on trunking radios.

Oh, no i know what your talking about. But i mean when you hear the chirp, theres a beep after it like if i were talking you you with motorola two way radios, when i key up you will hear "CHIRP beep". I was listening to my fire departments repeater, and all or the transmissions from trucks you would hear "CHIRP" but once and a while i would hear "CHIRP beep". ???

 

[firefive76]

Hi, After listening to a fire repeater in my town, I noticed that any time that somebody begins to talk while the repeaters transmitter is still on from the last person talking (tail) there is a two tone noise Beep (High) Beep (low). I also hear this when Disbatch begins to talk.

for when somebody talks right after another person quickly, I hear "Beep Beep, Chirp". I know what the chirp is (MDC1200) but whats the "beep beep"?

My guess to the first question is a guard tone. As for the 2nd, Ive heard repeaters do that, but I dont know what it is.

 

[firefive76]

Oh, no i know what your talking about. But i mean when you hear the chirp, theres a beep after it like if i were talking you you with motorola two way radios, when i key up you will hear "CHIRP beep". I was listening to my fire departments repeater, and all or the transmissions from trucks you would hear "CHIRP" but once and a while i would hear "CHIRP beep". ???

My guess is probably the "ok to talk" tone for the MDC1200 going over the mic of the transmitting radio.

 

[centuryvrproductions]

My guess to the first question is a guard tone. As for the 2nd, Ive heard repeaters do that, but I dont know what it is.

is different than the other post.... i mean the repeater goes beep beep like a disbach tone thing .

ya im pretty sure that its there so that you can distinguish between the first transmissin and the second.

as for the MDC1200 after beep it doesnt have anything to do with this beep beep on the repeater....

 

[centuryvrproductions]

My guess is probably the "ok to talk" tone for the MDC1200 going over the mic of the transmitting radio.

Here is what im talking about: ‪MDC with beep‬‏ - YouTube

 

[N4DES]

It is probably the wireline keying tone your hearing.

 

[CommJunkie]

Try this, see if it sounds like it.

Tone remote - Wikipedia, the free encyclopedia

 

[CommJunkie]

Yes, you are hearing the Proceed Tone from the radio through the mic. The beep is not part of the MDC1200 signal.

 

[centuryvrproductions]

Yes, you are hearing the Proceed Tone from the radio through the mic. The beep is not part of the MDC1200 signal.

What is a proceed tone? Whats its purpose? what radios come with it?

 

[bezking]

Whatever is happening there isn't supposed to be happening.

MDC1200 is the squawk, and the beep is the "proceed tone" to tell the radio user that the radio is done sending the signal and is ready for the user to talk. The beep is only supposed to be heard by the radio operator - it is NOT supposed to be sent over the air. There are some radios which will accidentally send part of the end of that tone over the air but I've never heard it like that.

What kind of radio was transmitting that?

 

[centuryvrproductions]

I dont know for sure... Probably a Motorola CDM.... That was transmitted at the fire department.
most all of the engines at the fire department that talk on the radio only have the squoak, but some have the squoak beep sound. I know its not the thing that tells you to begin talking because the tone is a tripple beep. you hear the tripple beep yourself and the squakbeep is herd on the air.

 

[centuryvrproductions]

Try this, see if it sounds like it.

Tone remote - Wikipedia, the free encyclopedia

Yes, this looks to be it. I have a tone remote system at my radio room here and the program made those beeps so i was thinking that.

that explains the disbach key up tones but not so much the tones herd between two radio users when the repeater is still transmitting its "tail".

 

[bezking]

I merged this thread and the "Public Safety Repeater Courtesy Tone" thread since they're basically about the same thing.

I agree with KS4VT, it's probably a wireline tone - since the MDC glitch I mentioned is never that bad.

 

[CommJunkie]

The beep is only supposed to be heard by the radio operator - it is NOT supposed to be sent over the air.

It's not being "sent" over the air. It is being sounded by the speaker and retransmitted by the microphone. It's common on the HT1250's set for the short beep.

 

[exkalibur]

That is the "PTT Sidetone" coming from the radio. It isn't supposed to be transmitted, but sometimes the mic audio path is opened before the sidetone stops playing. It is a beep played by the transmitting radio to let the user know they may proceed to talk. The HT1250 and CDM1250 did this quite a bit.