RF out for commercial airliners

JASII

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I assume that you are referring to the AM transceivers operating on 118-138 Mhz. If I recall correctly, the transmit power is often 10 or 20 watts.
 
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JASII

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  • This one is 36 watts.

  • 36W (P.E.P.) RF output power


 

xms3200

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Actually, Collins makes the radios that almost 100% of the airliners use in commercial airlines use. The models VHF-900, -920 and the latest VHF-2100 are all 25W transmit power P.E.P. And for the HF transceivers, all are 400W PEP on USB, 125W on AM which is very rarely used.
 

ATCTech

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Also, the older Bendix-King KY-197 and KY-196 series were 7W or 16W output respectively. Still some of them around in 1980s and likely early 1990s airframes as well.

 

xms3200

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Yes, for commercial airliners such as Boeing, which I work on, all of them are 25W as compared to the General Aviation models which seem to be of lesser power.
 

WB9YBM

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I assume that you are referring to the AM transceivers operating on 118-138 Mhz. If I recall correctly, the transmit power is often 10 or 20 watts.
over-seas flights are also capable of SSB on HF (some pilots with ham licenses as well as ham friends of pilots have been known to show up in the ham bands when they get bored--like at the mid-Atlantic portion of their flight).
 
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