military aircraft Band?

[yaesuft60]

is (243.000 - military aircraft emergency) AM or FM and if any one knows what is the military aircraft band (the start and finsh) and what are the steps (0.5 0.10 0.12.5 0.25 0.50 0.100) and what is in the 300 -400 band?

 

[ka3jjz]

Read this;

http://wiki.radioreference.com/index.php/VHF/UHF_Military_Monitoring

I don't know if there are different allocations in Canada, but this is what we have here in the States. If you're close enough to hear US bases, many are putting in APCO25 digital systems in the 380-390 Mhz area.

73s Mike

 

[yaesuft60]

ill try that but im still wondering about what mode 243.000 is (AM or FM)
73 and thanks mike

 

[trainman111]

243.000 is AM mode.

 

[morfis]

is (243.000 - military aircraft emergency) AM or FM

AM

and if any one knows what is the military aircraft band (the start and finsh) and what are the steps (0.5 0.10 0.12.5 0.25 0.50 0.100) and what is in the 300 -400 band?

There are several parts to "military airband". The part of the spectrum most often associated with it is 225-400MHz which is almost exclusively AM and 25KHz steps (there are some notable exceptions: some USAF Airborne Command Post comms are SSB within a WFM carrier, and most modern military aircraft have radios that can transmit any mode and any step size).
380-400MHz is slowly being transferred away from milair for trunked use around the world BUT the change isn't going to be overnight.

There is quite of lot of milair activity around 50MHz (a mixture of AM and FM with 10KHz steps being common) and between 137-142MHz (usually AM and 25KHz steps) in some areas.

 

[yaesuft60]

thanks alot guys