Delaware County Pa New System

[cavmedic]

We'll see about that on the next fire cluster

The issue on pagers had nothing to do with the fire side, except they were the recipient due to having the pagers.

 

[TRob55]

Done and no longer an issue

Nope, still waiting on our radios to be updated

 

[TRob55]

The issue on pagers had nothing to do with the fire side, except they were the recipient due to having the pagers.

What was the cause determined to be?

 

[cavmedic]

What was the cause determined to be?

Some corrupt data was tracked by cross referencing times of activations to transmissions on the received TG

 

[cavmedic]

There's a huge cell tower array on the apartment buildings which is likely the cause of the dropout in signal on the G5. The APX likely has a little better front end to handle that.

I’m gonna take a SWAG that there is a BDA somewhere close by. Snagged this spike when I drove past.

 

[soberbyker]

Another question for @stevecast2024 or anyone else. On PD radio what's meant when Delcom calls "Name and number"? as in (station## name and number) The officer's name and badge # or something else? No reply from officer other than "OK"

When I quoted the message below yours was quoted too, so I don't know if it was answered or not, but what it means is someone (citizen) wants to talk to police over the phone not in person.

Radnor uses a Pd DMR which is not encrypted car to car on Twp channel and Pw is the second slot on the color code

Not sure what this means as I'm not up on the tech jargon. That said is DMR an 'extra' for the SDS200? And does that mean they're not using 500.337 (or whatever it was) anymore? I have zero clue what the last part means "Pw is the second slot on the color code"

 

[cavmedic]

Not sure what this means as I'm not up on the tech jargon. That said is DMR an 'extra' for the SDS200? And does that mean they're not using 500.337 (or whatever it was) anymore? I have zero clue what the last part means "Pw is the second slot on the color code"

DMR is an additional feature license on the SDS.

PW= public works
2nd time slot= DMR uses two time slots ,
the frequency is divided in half and offset with timing. Meaning it allows for two simultaneous transmissions on the same frequency. That’s where the time slots come into play.

It works kind of like a zipper. It’s also known as TDMA or Time Division Multiple Access.

Which reading up on DMR will also help you understand some similarities with P25 phase 2 as well. While not the same, but similar in some aspects.


Lots of videos out there that can explain it better with visuals as well which may help.

 

[Whiskey3JMC]

Well lookie here, another CC change

 

[soberbyker]

DMR is an additional feature license on the SDS.

PW= public works
2nd time slot= DMR uses two time slots ,
the frequency is divided in half and offset with timing. Meaning it allows for two simultaneous transmissions on the same frequency. That’s where the time slots come into play.

It works kind of like a zipper. It’s also known as TDMA or Time Division Multiple Access.

Which reading up on DMR will also help you understand some similarities with P25 phase 2 as well. While not the same, but similar in some aspects.


Lots of videos out there that can explain it better with visuals as well which may help.

Thank you

 

[Whiskey3JMC]

Wow two CC changes in one day

 

[One13Truck]

Oh the hue manatee!!!

 

[Mainlineradioclub]

I’m gonna take a SWAG that there is a BDA somewhere close by. Snagged this spike when I drove past.

I get an out of range when I’m in the block of the cell tower near bright view in Devon while scanning Chester county and when I pass the ATT building tower in Wayne. It must be something with the signal on the pagers when we’re with in spitting distance of a cell tower

 

[I_Am_Infinite]

Wow two CC changes in one day
View attachment 195485

I've had that on our new county system being built out, just totally random, can be days on one, couple hours etc. I figured it's just testing stuff since no FCC license yet on our system..

 

[CommJunkie]

Well lookie here, another CC change
View attachment 195471

Just outta curiosity, what prompts a CC change?

 

[I_Am_Infinite]

Just outta curiosity, what prompts a CC change?

Sometimes they just change on some systems, like a rotation... A system close to me used to rotate between 4 CCs on a daily basis, 1 CC, then switch to another after 24 hours etc etc..

Hardware failure.

Noise levels on a certain frequency can make it change if it had bad interference from something.

Maintenance on the system.

Supposedly security threats can, from jamming or saturation to bypass the attack on a certain frequency.

 

[stevecast2024]

Nope, still waiting on our radios to be updated

The fix he was talking about was the for the pagers.... not the emergency button. Yes yours is still outstanding as well as 95% of the rest of the radios in the queue. It is a tedious process as you know. Make level adjustments, test, adjust again, test. Not going to roll out a change countywide until it is tested and solid. The update does address the emergency button but it also has significant adjustments to the audio profiles.

 

[soberbyker]

The fix he was talking about was the for the pagers.... not the emergency button. Yes yours is still outstanding as well as 95% of the rest of the radios in the queue. It is a tedious process as you know. Make level adjustments, test, adjust again, test. Not going to roll out a change countywide until it is tested and solid. The update does address the emergency button but it also has significant adjustments to the audio profiles.

That's good, some transmissions, even from the dispatcher, are very low, while some of the officers sound like they are screaming, not a lot, but some.

 

[stevecast2024]

That's good, some transmissions, even from the dispatcher, are very low, while some of the officers sound like they are screaming, not a lot, but some.

Made some increases to the dispatchers last week. Letting that soak in for a bit. Seems a lot better you're right. Its still a learning curve for a lot of users also. Some users eat the mic some won't remove the mic from the cradle. Its very difficult with 4000 users to be perfect so we try to get as close to the middle ground as possible. Debbie had a reduction to her levels today. Should be more even keel with the rest of the transmissions now.

 

[stevecast2024]

Just outta curiosity, what prompts a CC change?

Any of the 9 channels on the system can be control channels. Currently we have 4 of them configured as possible control channels and the others are not in the pool. We do not have them set up to rotate but they will roll when configuration changes are made. Last week changes were made to how data calls are handled and there were a couple of control channel rolls. They will also roll if they detect an issue on the in service channel but this is not a common occurrence.

 

[soberbyker]

Made some increases to the dispatchers last week. Letting that soak in for a bit. Seems a lot better you're right. Its still a learning curve for a lot of users also. Some users eat the mic some won't remove the mic from the cradle. Its very difficult with 4000 users to be perfect so we try to get as close to the middle ground as possible. Debbie had a reduction to her levels today. Should be more even keel with the rest of the transmissions now.

One thing, of many, I found odd about Debbie, there was a call to Baltimore Pike and 476, the way she pronounced it was different. She said "Four hundred and seventy six and Baltimore Pee Kay", for 476 and Baltimore PK.