NAS question

[jpm]

Ok set up my APX 1000 for a scan list/hidden talkgroup setup on STARCOM 21 and the CHGO OEC systems. Miss 20% of transmissions when scanning several systems. Is there a scan speed setting that would help with receiving all scan list talkgroups?

 

[GTR8000]

Of course you're missing transmissions. The radio has to scan between multiple control channels, pausing on each to look for grants, then moving on. The default dwell time per system is 2 seconds, which is really the lowest you want to set it at, otherwise you're going to miss even more activity. If it's that important that you don't miss transmissions, then you'll need more than one radio to monitor multiple systems.

 

[jpm]

APX 1000 have set up for the hidden talkgroups. When I scan two different system (towers) 10% of transmissions missing.

Should I change

Scan wide ---- conventional settings Time between priority samples (ms) set at 550 now -------- Change to a higher value?

 

[jpm]

Ok this is new to me trying to figure out if this can be fixed. I do know I'm missing transmissions just trying to have positive feedback to resolve. Yes I am missing transmissions as you stated and aware of this. Your not helpful if no positive resolver. But thx for chiming in I really appreciate it and enjoyed our conversation.

 

[GTR8000]

Nice attitude. I've already explained to you that there's really nothing you can do to "resolve" it, as scanning multiple systems requires the radio to dwell on each control channel for long enough to see talkgroup grants. When it's on one of those control channels, it has zero awareness of the other system. This is not like conventional scanning where it checks other channels for priority. Once the radio is dwelling on one of the trunked systems, it cannot and will not switch to the other system until it goes back to the other control channel. If one system is busy, it might be minutes before it goes back to check the other control channel.

The only solution is to scan only one trunked system per radio.

 

[clbsquared]

H

Ok this is new to me trying to figure out if this can be fixed. I do know I'm missing transmissions just trying to have positive feedback to resolve. Yes I am missing transmissions as you stated and aware of this. Your not helpful if no positive resolver. But thx for chiming in I really appreciate it and enjoyed our conversation.

GTR8000 gave you the answer to the question you asked. There’s not much else you can do.
Perhaps you should reach out to Motorola and see if they can assist you with a quicker scan rate for NAS between two systems.

 

[Skypilot007]

Scanners such as all the models listed in your signature do the same thing. The scanner may handle this slightly better depending on how you setup each system in the scanner. Its the same concept, the more you scan the more you miss.

 

[n3obl]

GTR answered the question. You really cant use a radio with NAS to scan between multiple trunks at the same time.

 

[chrismol1]

I have a scan list setup for monitoring 3 trunked systems, it's not ideal it won't get every transmission as it dwells between each systems control channel regulated by the System Search time under trunking scan settings but what it does is when a hot call comes up you'll know it by the action and then I have another personality scan list setup for each trunked system I can flip to after you hear some worthwhile action, that's as good as it will get without separate radios on each system

 

[wtp]

we need to start a list of radio rules...

THE MORE YOU TRY AND LISTEN TO, THE LESS YOU WILL HEAR !

 

[18bravo]

3 works ok but you will miss transmissions. If you are monitoring a single system set to 255.

 

[wtp]

• Motorola Forum

my APX 1000

and it sounds like directions for a uniden radio ???

 

[62Truck]

You should probably just stick to a scanner

 

[Giddyuptd]

Larger or multiple systems would need multiple devices. There is others such as harris or bk which allow straight forward no affiliate as well as unication but they also have limitations. Smaller systems nas will work pretty good specially on one system. Most legit subscriber command personnel prefer a second radio anyway as you can have all the bells and whistle in a 8000xe all band but have limitations per say. Many still believe in 2 to monitor in command levels who are legit subscribers. Most wouldn't need that however. None the less there is pros and cons with scanners and the nas method isn't exempt from cons. Both aren't flawless. Nas is a method you're tricking the radio to do something it wasn't intended to do to begin with.

 

[GTR8000]

Nas is a method you're tricking the radio to do something it wasn't intended to do to begin with.

That's a common misconception. In fact Motorola subscribers have had Multi-System Talkgroup scan type for decades. The Multi-System Talkgroup and newer Intelligent Priority in the APX series scan types were designed from the beginning to scan not just one or more trunked systems, but also a few conventional frequencies mixed in. The non-affiliate method (or more accurately non-registration) was just a workaround for not having to sit on a trunked talkgroup to initiate scanning, but at the end of the day it's really no different from what the radios were always capable of doing.

 

[clbsquared]

• Motorola Forum

my APX 1000

and it sounds like directions for a uniden radio ???

What you’re being told is, a scanner will work better for multi system scanning. That’s what they are designed to do. Scan multiple frequencies and multiple systems at a very fast rate. Motorola radios and the like are designed to be “two way” communication devices, not scanners. Just because they have the ability to scan, doesn’t make them superior to a scanners capability.

 

[wtp]

yes, i know, i am not the OP.
it just sounds like some here are using uniden radio programming settings for the motorola.

 

[GTR8000]

it just sounds like some here are using uniden radio programming settings for the motorola.

Which posts would those be? Every post I've read so far is applicable to an APX subscriber, not a scanner.

 

[wtp]

18bravo with setting, i guess hold, to 3 or 255.
that sounds like the setting for many uniden scanners.

 

[GTR8000]

18bravo with setting, i guess hold, to 3 or 255.
that sounds like the setting for many uniden scanners.

Negative.