PL Tone Issue

[100pcttn]

Morning. You guys have helped me out before, so here's a new one that has me stumped this morning! I have a NX-340U programmed with 4 frequencies, we'll illustrate one for this purpose, using code 100.0. Other units in that building could not receive the audio from this particular hand held. I have a NX-320 here programmed with the same settings that will not receive audio either UNLESS I manually hold in the squelch button, then all is fine. Now for the confusing part! I have a NX-3820 sitting here on my desk, same programming, and it opens up and receives audio just fine on any of the matching channels. I've uploaded programming from different users into the offending unit, to no avail, thinking perhaps I had some quirky setting in that file. I've spent over an hour looking between these 3 programming setups to see what I may be missing. I'm stumped! Any ideas out there? Thanks again for the time and assistance.

 

[tweiss3]

You don't have to say which tone it is, but is it one of the standard tones, or is it a custom tone? Is it CTCSS (tone) or DPL? Kenwood seems not like a few of the non-standard tones or DPL. If it is a standard tone, you might need to send your unit in for alignment/adjustment.

 

[100pcttn]

It's a standard tone programmed with their software KPG-170. Yeah, I'm thinking it may be a hardware issue inside and not a programming issue since i tested several different working programming files I had on this model. Thanks.

 

[EWC_BDN]

I would say the tones don't match and that's just it. Like the most obvious answer is usually the cause. It just has to be ruled out 100% before you try anything else. Is your radio programmed with off hook decode? because then it would unsquelch everything anyway. does the radio receive from your nx 3820?

I would really doubt it's a hardware thing. unless it's a range issue not just a tone issue.

 

[mmckenna]

If it's an older radio and its alignment has drifted off, it can have trouble decoding the PL tones.

Make sure you are set to the correct bandwidth for the channel, but it sounds like you already eliminated that by loading codeplugs from other radios into the offending unit.

 

[100pcttn]

If it's an older radio and its alignment has drifted off, it can have trouble decoding the PL tones.

Make sure you are set to the correct bandwidth for the channel, but it sounds like you already eliminated that by loading codeplugs from other radios into the offending unit.

Yes sir, i put 2 or 3 different programs into the radio, and it still wouldn't open up the squelch on 2 different NX-320 radios I tested, but worked like charm opening up the NX-3820. All of which were right here in my office.

 

[100pcttn]

I would say the tones don't match and that's just it. Like the most obvious answer is usually the cause. It just has to be ruled out 100% before you try anything else. Is your radio programmed with off hook decode? because then it would unsquelch everything anyway. does the radio receive from your nx 3820?

I would really doubt it's a hardware thing. unless it's a range issue not just a tone issue.

Thanks, range wasn't an issue since all 3 radios were right here "looking at each other" in my office! The NX-3820 would open up and pass the audio thru, the 2 different NX-320's I tried would not, unless I press the squelch button in, then all was fine.

 

[mmckenna]

If you have confirmed 100% that the programming is correct, then that's what it sounds like.

Also, make sure you are not transmitting with a bunch of radios in close proximity. That can overload the receivers and make them not work correctly.

 

[100pcttn]

If you have confirmed 100% that the programming is correct, then that's what it sounds like.

Also, make sure you are not transmitting with a bunch of radios in close proximity. That can overload the receivers and make them not work correctly.

Yes sir. Only thing that kept me from chasing that path this morning...the complaint that came to me with the radio was that "he can hear us but no one can hear him", as reported by other users within that building operating on the same frequency.

 

[mmckenna]

Send the radio into the shop, or buy a new one. NX-1300's are pretty dang cheap and will do what the NX-340 will do.