Group Call No Audio

[Mikemike6622]

I am monitoring a local control channel and it seems like I am missing audio from some group calls such as the one highlighted below. I can hear some traffic but it seems like I am only hearing half of the conversations. What am I missing?

 

[Enforcer52]

What is your location and what are you trying to listen too? How many tuners do you have? Details are showing you don't have enough tuners.

If you are in Florida and listening to the below tower, you need two dongles/tuners to receive all the traffic.

352

97 (61)

097 (61)

Millers Ferry

Washington

852.050c

853.475c

853.725c

854.5875c

856.3875c

856.650c

 

[Mikemike6622]

What is your location and what are you trying to listen too? How many tuners do you have? Details are showing you don't have enough tuners.

If you are in Florida and listening to the below tower, you need two dongles/tuners to receive all the traffic.

352	97 (61)	097 (61)	Millers Ferry	Washington	852.050c	853.475c	853.725c	854.5875c	856.3875c	856.650c

What is your location and what are you trying to listen too? How many tuners do you have? Details are showing you don't have enough tuners.

If you are in Florida and listening to the below tower, you need two dongles/tuners to receive all the traffic.

352

97 (61)

097 (61)

Millers Ferry

Washington

852.050c

853.475c

853.725c

854.5875c

856.3875c

856.650c

I'm trying to listen to the public safety channels (EMS fire etc) in Jackson County Kansas. From what I understand it is a small county with only one control channel.

 

[Enforcer52]

Is this the tower you are trying to listen too? It is the only tower that even has a 854.5875 channel but is not showing as control channel. You would need 3 dongles for this system.

2 (2) 063 (3F) Lyndon Osage 854.5875 856.0125c 857.0625c 858.0625 859.2625 859.4625

 

[Mikemike6622]

Is this the tower you are trying to listen too? It is the only tower that even has a 854.5875 channel but is not showing as control channel. You would need 3 dongles for this system.

2 (2) 063 (3F) Lyndon Osage 854.5875 856.0125c 857.0625c 858.0625 859.2625 859.4625

This is the tower that I am trying to listen to.

FCC Callsign WSHI230 (KANSAS, STATE OF)

FCC Callsign WSHI230 (KANSAS, STATE OF)

www.radioreference.com

 

[mtindor]

This is the tower that I am trying to listen to.

FCC Callsign WSHI230 (KANSAS, STATE OF)

FCC Callsign WSHI230 (KANSAS, STATE OF)

www.radioreference.com

Looks like that site isn't listed in the DB -- I'm presuming it is a KSICS site ( Kansas Statewide Interoperable Communication System (KSICS) Trunking System, Statewide, Kansas ). You should submit the details to the database so that site can be added.

You'll need two dongles. You need to cover the 3.675 mhz spread between 854.0875 and 857.7125 with a little bit of room on each side. Each dongle, at 2.4 msps, would provide about 1.92 mhz with good performance. 1.92 * 2 = 3.84 mhz. So two dongles should do it.

Or, if you were inclined and felt it was affordable, a single Airspy mini at 6 msps ( about 4.8 mhz of peak performance) would cover that system as well. Airspys aren't cheap compared to dongles.

854.0375 854.5875 855.2375 856.0375 856.7125 857.7125

Mike

 

[Enforcer52]

Looks like that site isn't listed in the DB

I could not find it listed either, fairly new site it seems.

 

[Mikemike6622]

Thank you both for the information and also for breaking it down barney style. Now i understand that I need two dongles. Ill be on the hunt to see if I can run two SDR's on some sort of USB splitter since my computer only has one USB port.

 

[Enforcer52]

I would suggest getting a powered port. Some of the 3 or 4 port unpowered have issues with sdr's because the laptop doesn't provide enough power thru the usb port, and then you start getting transfer buffer errors on SDRTrunk.

 

[Mikemike6622]

Thanks again for the help, I got the second SDR and a powered USB port and I'm up an running.

 

[dave3825]

Thanks again for the help, I got the second SDR and a powered USB port and I'm up an running.

The call you have highlighted is taking place on 857.7125. If your listening to site 65, please make a submission for any freqs you see in SDRT that are not listed.

And could you post a screenshot of the Details tab?

 

[Mikemike6622]

 

[dave3825]

You should submit 855.2375 as a control channel so it appears as such and 857.7125 as a voice channel so the database can reflect that.