Kenwood NX1300K

[jasej]

Hi Group !

I have a situation with about 10 NX1300K radios, none of which have been able to communicate with an identical radio, which is in a working system.

I have the frequency information for this NX1300 working correctly.
I read it and from there and I write the information to the 10 radios, and none of them communicate with the working radio!
I know that the system works in NXDN and uses the 12.5 kHz direct channel and 6.25 kHz in the repeater channel system....

So I decided to test each of the 10 radios on direct frequency, in an analog system, which is the basic system, with the radio functioning correctly, using the 25 kHz and 12.5 kHz spacing.
I detected that none of the 10 radios work on 12.5 kHz spacing, only on 25 kHz modulation spacing.

So I see, they won't work on the NXDN repeater system which uses the Very Narrow and Narrow format...

The question is, is there some kind of TUNER for these Kenwood Radios, or is it just that those 10 devices are already damaged?

All radios have the latest firmware available installed!

Thanks.

 

[kd4efm]

Some what hard to cipher this, so I will try my best for you.

1 repeater is what?
2 is the repeater in mixed mode or just analog?
3 radio to radio, what do they do?
you say wide band, but have to ask, ham or commercial?

Thanks

 

[jasej]

Okay, Evans...

Point one: NXR810K2 is in commercial use !
It's used in NXDN format, not mixed.

It operates at 6.25 kHz in a repeater system.

The frequency for transmitting on channel 02, direct, RX-TX, same frequency, but with 12.5 MHz spacing.

Point two: It's not a mixed operation.

Point three: Neither the repeater channel nor the direct channel can hear audio. It can't be heard.

From a radio that works well in the repeater system, it reads it and then writes it to those ten radios and they don't work, they can't be heard on either channel, transmitting and receiving... all 10 radios are the same model as the one that works well in the repeater system.

I believe, after the analog-only test, that they have some details regarding the audio transmission spacing selection, at 12.5 and 6.25 kHz.
In the analog test, they worked fine at 25.0 kHz, not at 12.5 kHz.

Thanks, Evans.

 

[AM909]

Optional Signalling and Audio Control are set to what? What about Encryption? Does the green light turn on, just no audio?

 

[tweiss3]

Check unit IDs, never duplicate unit ID.

 

[jasej]

Optional Signalling and Audio Control are set to what? What about Encryption? Does the green light turn on, just no audio?

Yes. The green LED lights up when receiving.

No audio is received.

No encryption.

Each radio has a unique ID.

But I have a question: If I use the same information from a radio that's already working in the system, the same model, and there are no differences, should it work?

Thank you.

 

[jasej]

Check unit IDs, never duplicate unit ID.

Ok,

All radios has unique ID !

NX1300 K , NXDN model !

Thank you

 

[AM909]

So, NX-1300NUK?

I think there are multiple things going on here, so let's try the basic direct/simplex test first.

Can you attach a radio and post three screen pics:

Model > Product Information, click Read Product Information. Whatcha got?

Double-click on the channel in the grid that is for simplex NXDN that is not working. What's on the General tab and on the NXDN tab.

You can change the freqs for security if you don't want to reveal them, just do it consistently (i.e., RX and TX should still be the same as each other, as should RAN Encode and Decode).

 

[jasej]

So, NX-1300NUK?

I think there are multiple things going on here, so let's try the basic direct/simplex test first.

Can you attach a radio and post three screen pics:

Model > Product Information, click Read Product Information. Whatcha got?

Double-click on the channel in the grid that is for simplex NXDN that is not working. What's on the General tab and on the NXDN tab.

You can change the freqs for security if you don't want to reveal them, just do it consistently (i.e., RX and TX should still be the same as each other, as should RAN Encode and Decode).

Yes, I did a basic direct/simplex test, and I saw that it doesn't work at 12.5 kHz, only at 25 kHz spacing. I tried analog frequencies.
I think, basically, I did the same thing on the digital channel, but it still doesn't work at 12.5 and 6.25 kHz.

I don't have access to the radios at the moment, they are now being used directly, in analog, by a crew of workers.

 

[Wicho]

All of mine get along with each other just fine. Look at how happy they look.

Seriously though, if you’re getting green lights but no audio, it’s probably something not programmed correctly. Encryption, ID, RAN, squelch or digital squelch code if analog,…I goofed once and if I recall, I forgot to set encryption on a few and would get green lights but no audio coming through on NXDN. Doesn’t explain your analog problem on direct though.

Maybe working on an along wide band but not on narrow because radio needs an alignment?

 

[mmckenna]

I've got about 10 NX-1300NUK's running at a site.
At another site I have about 80 of the DUK's running DMR

No issues with any of them. Aligned fine from the factory.

I think you have a programming issue. Sharing the programming file would probably get you the most help.

Whatever you do, resist the urge to go into service mode and change things. Unless you have a service monitor, any changes you made would be done totally blind.

 

[jasej]

All of mine get along with each other just fine. Look at how happy they look.

Seriously though, if you’re getting green lights but no audio, it’s probably something not programmed correctly. Encryption, ID, RAN, squelch or digital squelch code if analog,…I goofed once and if I recall, I forgot to set encryption on a few and would get green lights but no audio coming through on NXDN. Doesn’t explain your analog problem on direct though.

Maybe working on an along wide band but not on narrow because radio needs an alignment?

Yes, I thought it needed tuning, so I asked if there was a tuner for those Kenwood series radios.

Anyway, they went to work with them, programmed on direct frequency, analog, and 25 kHz amplitude.

All good!

Thanks.

 

[jasej]

I've got about 10 NX-1300NUK's running at a site.
At another site I have about 80 of the DUK's running DMR

No issues with any of them. Aligned fine from the factory.

I think you have a programming issue. Sharing the programming file would probably get you the most help.

Whatever you do, resist the urge to go into service mode and change things. Unless you have a service monitor, any changes you made would be done totally blind.

Hehe, thanks for your comments.

Everything's fine. They now work with all of them. Among the 10 radios.

The original programming comes from a working radio. The information is written directly into each radio; they're all the same model.

By the way, I also programmed the same information manually into each radio, but it doesn't work.

But, I repeat, they work now. Direct analog frequency and 25 kHz spacing!

 

[mmckenna]

But, I repeat, they work now. Direct analog frequency and 25 kHz spacing!

Unless you are using these radios on GMRS or amateur radio, it would be a violation to run them in 25KHz analog. Your FCC issued license will require narrow band/12.5KHz.

 

[jasej]

Unless you are using these radios on GMRS or amateur radio, it would be a violation to run them in 25KHz analog. Your FCC issued license will require narrow band/12.5KHz.

Yes, they were programmed at 462.5........,,,, no problem with them and with 1 watt of power !

Thank you my friends, for all your comments

Regards