Another air-to-air ?

[jaymatt1978]

I know about 123.40, 123,45 and 123.475 but anyone ever hear 123.1750 active?? I put it in while searching

 

[wtp]

one that i have kept in and hear with some small groups of planes is 123.15.

 

[kny2xb]

123.150 & 123.175 are flight test frequencies

47 CFR § 87.303 - Frequencies.

www.law.cornell.edu

123.125 - 123.275, 123.325 - 123.475 & 123.525 - 123.575 are the ranges for flight test frequencies, 25 KHz apart

 

[ericcarlson]

All the flight test freqs tend to have misc air-to-air usage. There's also 122.225, 136.975, 121.95. But any freq could be used. I hear unofficial air-to-air on random "company" freqs occasionally. Multicom/Unicom freqs can be air-air hangouts also if they're not assigned locally.

 

[ATCTech]

136.975 is the global main frequency for VDL2 A/G datacom. Voice or other data usage would be frowned up.

 

[spanky15805]

136.575​

136.600​

136.625​

136.650​

136.675​

136.700​

136.725​

136.750​

136.775​

136.800​

136.825​

136.850​

136.875​

136.900​

136.925​

136.950​

136.975​

Remarks​

Current situation (Sept 2001)

ATS​

ATS​

ATS​

ATS​

ATS​

ATS​

ATS​

ATS​

ATS​

OPC​

OPC​

OPC​

OPC​

A Sita​

A Arinc​

M4(2)​

M2 (1)​

​

STEP 1 1/1/2003

ATS​

ATS​

ATS (4)​

ATS (4)​

ATS (4)​

-​

M4 (2)​

-​

ATS (4)​

OPC​

OPC​

OPC​

OPC​

A Sita​

A Arinc​

- (3)​

M2​

VDL M 2 non protected (AOC) VDL M 4 trials​

STEP 2 1/1/2004

ATS​

ATS​

ATS (4)​

ATS (4)​

ATS (4)​

-​

M4 (2)​

-​

ATS (4)​

OPC​

OPC​

OPC​

OPC​

A Sita​

-​

- (3)​

M2​

VDL M 2 ATS protected & AOC​

STEP 2 Fall back option

A Arinc​

STEP 3 1/1/2005

ATS​

ATS​

ATS (4)​

ATS (4)​

ATS (4)​

-​

M4 (2)​

-​

ATS (4)​

OPC​

OPC​

OPC or A Arinc​

OPC​

- (3)​

M2​

- (3)​

M2​

2nd VDL M 2 protected ATS & AOC​

STEP 4 Date tbd

ATS​

ATS​

ATS (4)​

ATS (4)​

ATS (4)​

-​

M4 (2)​

-​

ATS (4)​

-​

M2​

- (3)​

M2​

- (3)​

M2​

- (3)​

M2​

3rd and 4th VDL M 2​

STEP 5 01/01/2010 option 1

ATS​

ATS​

ATS (4)​

ATS (4)​

ATS (4)​

-​

M4 (2)​

-​

M4​

-​

M2​

- (3)​

M2​

- (3)​

M2​

- (3)​

M2​

Regional ADS VDL Mode 4 channel​

STEP 5 option 2

ATS (4)​

ATS (4)​

-​

M4​

- (3)​

- (3)​

Experimental
Experimental, yearly renewable or to be finally assigned upon ADS/VDL Mode 4 endorsement decision
Feasibility of feeding with uplink services upon conditions to be investigated
Special measures (see annexe B) for ground scenario
M2: VDL Mode 2 M4: VDL Mode 4 A: ACARS OPC: Operational Airlines Communication ATS: ATS protected services

 

[jaymatt1978]

What IS flight test???