UHVF "particulars" manual frequencies

[Fishbed-21]

Hi pilots,

Today I was trying some JTAC/buddy lasing with the M2K-C.

In the mission editor I've assigned to the JTAC the frequency 145.00MHz in AM.

Once in the cockpit and in flight I've tried to enter this frequency in the UVHF radio. (Using the Manual mode, not preset) but the problem is that the all frequencies between 145.00 and 144.00 are "showed" as 225.00 in the led indicator (and they doesn't work I.e. Cannot communicate)

Now my question is, does those frequencies are "reserved" or something like that ? Or is a bug?

Thanks in advance for any help provided!

And for devs: continue your great job with this module!

[nomdeplume]

I think this is intended. There are two different radios and two different frequency ranges covered. 145 is not a covered frequency.

 

These are aero VHF range (118.00 - 143.90) and aero UHF range (225 - 399.90).

 

The main radio covers both ranges, the auxiliary radio only the UHF range.

[baltic_dragon]

I confirm what nomdeplume said (again!) - VUHF covers both ranges which will be very useful in the campaign, as sometimes you will be required to jump between different frequencies.

[Fishbed-21]

I think this is intended. There are two different radios and two different frequency ranges covered. 145 is not a covered frequency.

 

 

 

The main radio covers both ranges, the auxiliary radio only the UHF range.

 

I confirm what nomdeplume said (again!) - VUHF covers both ranges which will be very useful in the campaign, as sometimes you will be required to jump between different frequencies.

 

According to chuck's guide of the Mirage 2000C:

- V/UHF COM1 radio is used for communications between 118 and 400 MHz.

- UHF COM2 radio is used for communications between 225 and 400 Hz.

Then the "true" radio coverage is 118.00 to 143.90 for V/UHF (main) and 225.00 - 399.90 for the UHF (aux)?

Edited September 6, 2016 by Fishbed-21

[Azrayen]

No. Chuck is right.

Except there is a non-selectable range between the VHF and UHF ranges of the V/UHF radio.

 

In this non-usable range, IRL, you have non-aeronautics related frequencies, e.g. amateur radio, satellites uplinks, maritime VHF, private traffic, emergency services...

Edited September 6, 2016 by Azrayen

[Britchot]

Found some interesting details on what is shared within those bands:

 

http://www.spaceacademy.net.au/spacelink/radiospace.htm

 

SPACE COMMUNICATION BANDS

 

The following is a list of some of the more heavily used frequency bands for space communication. Specific frequencies may be found in the links provided at the end of this note.

 

• VHF Band
  
  • 136 - 138 MHz
    This band was used heavily by many different types of satellites in the past. Today (2012), most activity is restricted to 137-138 MHz (which is the current allocation) and consists of meteorological satellites transmitting data and low resolution images, together with low data rate mobile satellite downlinks (eg Orbcomm)

• 144 - 146 MHz
  One of the most popular bands for amateur satellite activity. Most of the links are found in the upper half of the band (145 - 146 MHz).

• 148 - 150 MHz
  This tends to be used for uplinks of the satellites that downlink in the 137 - 138 MHz band.

• 149.95 - 150.05 MHz
  This is used by satellites providing positioning, time and frequency services, by ionospheric research and other satellites. Before the advent of GPS it was home to large constellations of US and Russian satellites that provided positioning information (mainly to marine vessels) by use of the Doppler effect). Many satellites transmitting on this band also transmit a signal on 400 MHz.

• 240 - 270 MHz
  Military satellites, communications. This band lies in the wider frequency allocation (225 - 380 MHz) assigned for military aviation.

[Ciribob]

Not sure if this is any help but as part of my other project all the ingame frequencies are documented here per aircraft: https://docs.google.com/spreadsheets/u/2/d/1tzd996zJ1t0heZ-t1PpL7vNUIZbXl7pI6De0GThN1Qw/htmlview#gid=1869108790

[Fishbed-21]

No. Chuck is right.

Except there is a non-selectable range between the VHF and UHF ranges of the V/UHF radio.

 

In this non-usable range, IRL, you have non-aeronautics related frequencies, e.g. amateur radio, satellites uplinks, maritime VHF, private traffic, emergency services...

Ok then the frequencies range for the V/UHF is 118.00 to 143.90 & 146.00 to 400.00 right?

 

Not sure if this is any help but as part of my other project all the ingame frequencies are documented here per aircraft: https://docs.google.com/spreadsheets/u/2/d/1tzd996zJ1t0heZ-t1PpL7vNUIZbXl7pI6De0GThN1Qw/htmlview#gid=1869108790

 

Great job on this file! Really useful!

[Britchot]

Ok then the frequencies range for the V/UHF is 118.00 to 143.90 & 146.00 to 400.00 right?

 

From Ciribob's document you'll see 118-144 and 225-399.975. 144 may not be inclusive so it could only be 143.90.

[Fishbed-21]

From Ciribob's document you'll see 118-144 and 225-399.975. 144 may not be inclusive so it could only be 143.90.

 

Ok thanks for the clarification!