R30 performance with simulcast?
- Thread starter kc5igh
- Start date
- Status
palmerjrusa
Member
The strange thing is that the scanning speed doesn't seem to make any difference with other P25 trunked systems, I can have it set at the max (#30) and it stops at all the signals.
I wonder if there is extra data in the voice packet that gets missed if the scan speed is set fast on your trouble system.
If you have the means, try pumping some raw unfiltered voice channel audio into DSD+ and see if it reveals the difference between your trouble system and one that works fine at the highest scan rate.
I think DSD+ will process voice channel data. If so, the results could be interesting.
At least you found a solution for the R8600.
palmerjrusa
Member
That may be a little beyond my technical know how!
That's a bummer but oh well, it was worth asking!
I'm still thinking you may be a victim of severe LSM problems from the strong system that is giving you trouble. Even though these new Icom receivers seem to handle LSM better than the P25 capable scanners, they are still not really designed with LSM in mind. Icom would have probably made that a selling point if they are designed to handle LSM systems.
If you can, take that R30 with you on a road trip and see what happens with your trouble system when you are more on the outskirts of its coverage area. That may help prove an LSM issue. Your tests of changing the gain should have ruled out overload as the cause.
Even just going a mile away may allow the system to be scanned at full speed and give good decodes.
I'm still thinking you may be a victim of severe LSM problems from the strong system that is giving you trouble. Even though these new Icom receivers seem to handle LSM better than the P25 capable scanners, they are still not really designed with LSM in mind. Icom would have probably made that a selling point if they are designed to handle LSM systems.
If you can, take that R30 with you on a road trip and see what happens with your trouble system when you are more on the outskirts of its coverage area. That may help prove an LSM issue. Your tests of changing the gain should have ruled out overload as the cause.
Even just going a mile away may allow the system to be scanned at full speed and give good decodes.
palmerjrusa
Member
Thanks for the suggestions.
I've never really used my ic-r8600/ic-r30 for monitoring P25 trunked systems till the last few days, used my scanners for that.
Another couple observations from the last few hours; two P25 trunked systems from neighboring counties I can monitor easily on my SDS/100 and SDS200 with just a 800 MHz rubber duck...you load those frequencies into my ic-r8600 hooked up to an outdoor AOR SA7000 wideband antenna...and nothing, same with the ic-r30 with its telescopic antenna.
I've never really used my ic-r8600/ic-r30 for monitoring P25 trunked systems till the last few days, used my scanners for that.
Another couple observations from the last few hours; two P25 trunked systems from neighboring counties I can monitor easily on my SDS/100 and SDS200 with just a 800 MHz rubber duck...you load those frequencies into my ic-r8600 hooked up to an outdoor AOR SA7000 wideband antenna...and nothing, same with the ic-r30 with its telescopic antenna.
palmerjrusa
Member
I'll keep playing around and report back any findings.
Got my ic-r8600 back to scanning the military airband, it's great at that!
Probably a simulcast thing.
The R30 was purchased primarily for Shortwave BCB, Air, and Rail bands. Plus it does a great job searching P25, NXDN, and Air freqs. The 436 will handle the trunked systems just fine.
That all in one HT just does not exist....yet.
That all in one HT just does not exist....yet.
And The R30 Is Backordered Till 11-11 Hum Looks Like Thanksgiving Day's Off Play Time.
Barnstormer7
Member
- Joined
- Sep 25, 2019
- Messages
- 56
I pick up the Statewide P25 Viper system fine all the way from Henderson co to Cherokee and Waynesville so far. Will be heading to Fl in a couple weeks and will find out how many areas I can receive.
Where on the menu are you able to adjust scanning speed?
He's talking about the R8600 in that post.
Scan speed can't be adjusted in the R30. The only thing you can do with an R30 is set a channel delay on each memory channel.
Barnstormer7
Member
- Joined
- Sep 25, 2019
- Messages
- 56
Hey EMTBob, where did you order your R-30? I saw that ML&S got in a new batch if you don't mind ordering from the UK. I got mine in 3 days which was amazing.
Barnstormer7
Member
- Joined
- Sep 25, 2019
- Messages
- 56
Just curious about why there is still an "unblocked" version. It's been decades since there was a cell signal that was analog. Outside of a couple of Govt mobiles beyond 1.7ghz I haven't heard anything. Perhaps FCC just hasn't had the time to reclassify this restriction?
palmerjrusa
Member
You mean a delay on each channel you're scanning from the memory?
I don't see an option to write a specific delay in each channel memory.
Don't you mean why is there still a "blocked" version? I see no reason for this either and was able to get a US unblocked R8600. Some cell blocked radios actually cut into the US 900MHz amateur band limiting your "legal" reception.
Barnstormer7
Member
- Joined
- Sep 25, 2019
- Messages
- 56
Yes. There doesn't need to be an "unblocked" version as special order or govt only. It should be unblocked as standard to everyone, everywhere.
- Status
