new to aircraft

[FCVPI99]

so i looked it up and FAA says Rockford airport has a bunch of 120.X that i hear traffic on they also have a 290.375 tower Ground and 327.0 App/Dept. but i never hear anything on them i hear the Tower Ground and App/Dept on 120.X so can someone explain why they have a 200 and 300's freqs when they have the 120.X freqs?

 

[vagrant]

Military, those are Mil Air freqs. My local airport transmits on both of their civilian and mil freqs simultaneously. Military uses their freq while civilian air uses theirs.

Not sure why you do not hear the tower on 290.375. Someone else may comment thats knows more about that airport. Is your antenna not the best at monitoring 290.375, or are you some distance away?

 

[FCVPI99]

Military, those are Mil Air freqs. My local airport transmits on both of their civilian and mil freqs simultaneously. Military uses their freq while civilian air uses theirs.

Not sure why you do not hear the tower on 290.375. Someone else may comment thats knows more about that airport. Is your antenna not the best at monitoring 290.375, or are you some distance away?

using a VHF/UHF ANT -- im not even 5 miles away at that distance a coat hanger should pick it up ... i have noticed here that both east and west App/Dept Ground and tower and clearance Delivery all seem to have the same transmissions

 

[jaymatt1978]

Not all airports transmit on civilian and mil frequencies simultaneously. It depends

 

[MiCon]

Not all airports transmit on civilian and mil frequencies simultaneously. It depends

What he said.

Not all civilian towers have a military frequency assigned to that airport, and those that do don't always have the transmitter on for simulcasting the VHF frequency. Riverside, CA (KRAL) has a UHF tower freq, but the only time I ever heard it used was during their annual air show when military aircraft would arrive and depart for the air show.

My guess is that if the airport doesn't normally have a use for the UHF, the transmitter isn't used for simulcasting the VHF.

 

[FCVPI99]

ya not much Mil Air around here this isnt ohare ... but il leave them in anyways .. right now im whittling down the list i made from RR, FAA, and air scanner 5th edition from 1990

 

[wtp]

go looking.
he had great stuff.
1995.

 

[dlwtrunked]

using a VHF/UHF ANT -- im not even 5 miles away at that distance a coat hanger should pick it up ... i have noticed here that both east and west App/Dept Ground and tower and clearance Delivery all seem to have the same transmissions

On the ground, 5 miles is enough to make a real difference with terrain. How high is your antenna and what is the terrain? I live in what I call moderate terrain and an airport VHF 5 miles away is only a weak signal on a 40 ft tower receive antenna. Also note, many airport have two radio sites and one may be closer to you.

 

[FCVPI99]

On the ground, 5 miles is enough to make a real difference with terrain. How high is your antenna and what is the terrain? I live in what I call moderate terrain and an airport VHF 5 miles away is only a weak signal on a 40 ft tower receive antenna. Also note, many airport have two radio sites and one may be closer to you.

im almost 100 feet higher then transmitter if its on the tower we are about even on pretty much even ground

 

[FCVPI99]

View attachment 168109go looking.
he had great stuff.
1995.

i have 5th edition and its pretty much useless

 

[AirScan]

Chicago Center shows an RCAG located at Rockford. I'm just curious if you can hear the controller on 124.725 and simulcasting on 279.650 ?

 

[jaymatt1978]

Chicago Center shows an RCAG located at Rockford. I'm just curious if you can hear the controller on 124.725 and simulcasting on 279.6500

.I put an antenna on the roof a few years a go and can now hear the controller on both VHF and UHF on one controller frequency

 

[FCVPI99]

Chicago Center shows an RCAG located at Rockford. I'm just curious if you can hear the controller on 124.725 and simulcasting on 279.650 ?

those are not listen anywhere for Rockford and not of FAA lists but il add them to check

 

[FCVPI99]

so i i hear traffic on it .. in monkey terms what is RCAG?

 

[BM82557]

so i i hear traffic on it .. in monkey terms what is RCAG?

Remote Communications Air/Ground Facility

Aviation glossary definition for: Remote Communications Air/Ground Facility

www.pilotscafe.com

 

[FCVPI99]

dont really get it since i have heard handoffs to Chicago on normal freqs so in my mind there is no need for RCAG

 

[dlwtrunked]

im almost 100 feet higher then transmitter if its on the tower we are about even on pretty much even ground

Unclear when you say tower if you mean the ATC tower. Usually the main comms are not there.

 

[FCVPI99]

the tower is the tower its a big tall building with people in it with radars and stuff tell plains where to land and go

 

[AirScan]

so i i hear traffic on it .. in monkey terms what is RCAG?

Are you hearing the controller and are they simulcasting on both frequenies ? 124.725 and 279.650.

Chicago Center RCAG sites

 

[FCVPI99]

i think its the same on both 124.725 and 279.375 although not really sure cuz i cant listen to both at same time