Every time I try to monitor the published Atlantic Station frequencies, all I hear is a bunch of noise. Whenever someone transmits, it sounds like a trunked frequency control channel, but it is not present the whole time. Is anyone aware of an encryption method that sounds similar to a control channel?
Atlantic Station encryption
- Thread starter SiuDude2
- Start date
- Status
b7spectra
EMS Dispatcher
Got a frequency?
The frequencies are 461.2 and 461.85 (WQJC757). There is a constant data burst every few seconds on 461.2, but when someone transmits, it's replaced by a digital sound similar to that of a trunking system.
Here's a zipped M4a file that I recorded today.
Here's a zipped M4a file that I recorded today.
b7spectra
EMS Dispatcher
It sounds like intermod! Either that or a Motorola TRS control channel. If you have a TRS scanner, set it on that one as a control channel and see what comes up.
Atlantic Station
I haven't tried to monitor the frequencies used by Atlantic Station, but based on what you guys have posted it sounds like Atlantic Station my be using either MotoTRBO or NEXEDGE. I know a lot of businesses are switching to these technologies because some of the radio shops have convinced many of their customers to go ahead and plunge into the digital world. The City of Canton Police recently switched to NEXEDGE and their system transmits a data burst about every 10 seconds when no one is transmitting.
I tried some Kenwood NEXEDGE in VHF a few weeks ago and I was truly impressed with the coverage and audio quality. We had two portables and one repeater set up to operate in both the analog and digital modes at 12.5 kHz and did some coverage tests for a little over a week. We installed a single Kenwood NXR-700 repeater and connected it to an antenna on a 150' water tower just southwest of Kennestone Hospital. We were getting really good portable coverage in the digital mode down in Mableton all along Veterans Memorial Highway and when we switched to analog the signal was weak, scratchy and broken, if we could get in at all. To our north we had portable coverage up I-75 almost to Highway 92 in the digital mode where in analog the signal dropped out between Barrett Parkway and Chastain Road. I don't know a whole lot about Kenwood NEXEDGE, but I personally think it runs rings around P25 when it comes to coverage and audio quality. The NEXEDGE VHF digital portable talks in from further out than a 700/800 MHz ever thought about and, to me, the enhanced vocoder sounded much better in the VHF radio than any of the 800 MHz portables I have tried. I'm definitely going to investigate this further. I know, I'm not comparing apples to apples, but I'm at least comparing VHF analog to VHF digital when it comes to audio quality and coverage. I'm definitely not doing like a couple of our wonderful vendors who compare the performance of a multi-stie 800 MHz P25 System to a single site analog conventional VHF or UHF System so they can make a huge sale. We all know they do this and to a sheriff, police chief, fire chief, EMA Director or EMS Director it looks like apples to apples because they get the dog and pony show with all the smoke and mirrors along with a free lunch. Then before you know it a contract has been signed for a $16 million or more 800 MHz P25 multi-site radio system that will give their agency seamless interoperability with any other public safety agency in the great State of Georgia because 80% of the public safety agencies in our State are on 800 MHz P25 Systems. (NOT!)
Anyway, good luck on finding out what Atlantic Station is using.
I haven't tried to monitor the frequencies used by Atlantic Station, but based on what you guys have posted it sounds like Atlantic Station my be using either MotoTRBO or NEXEDGE. I know a lot of businesses are switching to these technologies because some of the radio shops have convinced many of their customers to go ahead and plunge into the digital world. The City of Canton Police recently switched to NEXEDGE and their system transmits a data burst about every 10 seconds when no one is transmitting.
I tried some Kenwood NEXEDGE in VHF a few weeks ago and I was truly impressed with the coverage and audio quality. We had two portables and one repeater set up to operate in both the analog and digital modes at 12.5 kHz and did some coverage tests for a little over a week. We installed a single Kenwood NXR-700 repeater and connected it to an antenna on a 150' water tower just southwest of Kennestone Hospital. We were getting really good portable coverage in the digital mode down in Mableton all along Veterans Memorial Highway and when we switched to analog the signal was weak, scratchy and broken, if we could get in at all. To our north we had portable coverage up I-75 almost to Highway 92 in the digital mode where in analog the signal dropped out between Barrett Parkway and Chastain Road. I don't know a whole lot about Kenwood NEXEDGE, but I personally think it runs rings around P25 when it comes to coverage and audio quality. The NEXEDGE VHF digital portable talks in from further out than a 700/800 MHz ever thought about and, to me, the enhanced vocoder sounded much better in the VHF radio than any of the 800 MHz portables I have tried. I'm definitely going to investigate this further. I know, I'm not comparing apples to apples, but I'm at least comparing VHF analog to VHF digital when it comes to audio quality and coverage. I'm definitely not doing like a couple of our wonderful vendors who compare the performance of a multi-stie 800 MHz P25 System to a single site analog conventional VHF or UHF System so they can make a huge sale. We all know they do this and to a sheriff, police chief, fire chief, EMA Director or EMS Director it looks like apples to apples because they get the dog and pony show with all the smoke and mirrors along with a free lunch. Then before you know it a contract has been signed for a $16 million or more 800 MHz P25 multi-site radio system that will give their agency seamless interoperability with any other public safety agency in the great State of Georgia because 80% of the public safety agencies in our State are on 800 MHz P25 Systems. (NOT!)
Anyway, good luck on finding out what Atlantic Station is using.
Thanks for the responses. I know that it's not intermod and neither is it a Motorola TRS because the control channel is always full time on Motorola systems.
I'll read up on those two systems. The data burst happens every 1.5-2 seconds, so I don't think it's NEXEDGE.
I'll read up on those two systems. The data burst happens every 1.5-2 seconds, so I don't think it's NEXEDGE.
In a Standard LTR or Passport System you will hear the idle message that sounds like a quick data burst or squelch break every two to three seconds depending on the settings in the system. The idle message is heard on each repeater transmit frequency in the system and it is used to let every radio in the system know what channels are available. Makes me wonder if they are using a digital LTR System, if there is such a thing, since you hear the data burst every two seconds but it is replaced with constant digital sound every now and then. Just a thought.
Julian1
Member
Regarding NEXEDGE.... Could one buy a 2way NEXEDGE and program for reception only ??? Or get another Kenwood product and have that HAM or Wide-range monitor + NEXEDGE for reception only??
MTS2000des
5B2_BEE00 Czar
it's been done, but if the system is trunking you would be monitoring it as a conventional only, as trunking requires a network access key + validation. attempts to validate with a radio not in the white list is a flag and will result in your shiny new NXDN radio being turned into a paperweight. if the system is using encryption, your out as intentionally intercepting encrypted radio systems is a NO-NO under Federal law.
If you're hearing digital then they're illegal. They have a narrowband analog license-Emissions 11K2F3E
ULS License - Industrial/Business Pool, Conventional License - WQJC757 - Atlantic Station - Frequency 000461.85000000
Aha, Motorola strikes again---must be mototurdo.
Mobile Communication
Matt Crawford
3433 Memorial Drive
Decatur, GA 30032
ULS License - Industrial/Business Pool, Conventional License - WQJC757 - Atlantic Station - Frequency 000461.85000000
Aha, Motorola strikes again---must be mototurdo.
Mobile Communication
Matt Crawford
3433 Memorial Drive
Decatur, GA 30032
MTS2000des
5B2_BEE00 Czar
wonder who sold them the radios? obviously they never bothered to update their license and coordination as appropriate (gee, like that never happens...:roll
- Status
