MotoTRBO DP series: Radio Front LED Blinking Green

[salarazad]

Hi everybody,

We are using MotoTRBO DP series radios with VHF frequencies, and the frontal LED is blinking from time to time with Green color even if there was no one PTTing.

The scanning feature is not enabled, so what could be the reason that the radio blinks, does that mean it is detecting activity on near by channels and not the active channel? or could it be an interference on the same channel?

I have looked into some resources

Many Thanks!

 

[chief21]

...so what could be the reason that the radio blinks, does that mean it is detecting activity on near by channels and not the active channel? or could it be an interference on the same channel?

I'm not that familiar with TRBO radios, but I am familiar with DMR. Most DMR radios use a green LED to indicate that the radio is receiving something. It is entirely possible that there could be other conversations on the same frequency, but if they are using a different talkgroup or color code, you would typically not hear them. It is also possible that your radio is seeing strong interference of some type on the frequency.

 

[alcahuete]

Could be a signal below the squelch level, an analog signal assuming you are on DMR, a signal that does not have the right CTCSS/DCS tone if you are on analog, the repeater sending out various pings, etc. There are a lot of things it can be.

Go to analog, disable all CTCSS/DCS tones, and open the monitor so you hear a bunch of static. You should be able to hear what it is.

 

[Australia4001]

Local interference ( non audiable) can cause the DP series radios to flash green , I've had a few do it

 

[K2NEC]

Local interference ( non audiable) can cause the DP series radios to flash green , I've had a few do it

Likewise. My TRBO radios flash green because of interference from my power supply on one channel.

 

[K9RPL]

If the radios are in Digital (DMR) mode the blinking green with no audio could just be a transmission on a different talkgroup or time slot than what your radio is listening to.

 

[salarazad]

Thank you all for the explanations and suggestions, I will make sure to do some investigation to find out what it is exactly.

 

[cpg178]

On our system the repeater transmits a data burst every 10 seconds. When this occurs the light blinks green. If your on a repeater this could be the case or it could also be what anyone mentioned above.

 

[K9RPL]

Essentially the blinking green indicates the radio is receiving a signal. Even if it doesn't open the speaker, it's still receiving a signal.