Comments on: The SELCAL Code

By: Aviationer

Aviationer — Wed, 10 Feb 2010 18:25:06 +0000

As far as I know, every airline can get some SelCal codes and use them among their fleets.
Here you have a SelCal Codes Userguide explaining you how this codes are used.
http://www.asri.aero/downloads/secal_usersguide.pdf

Regards.

By: rb bhardwaj

rb bhardwaj — Wed, 10 Feb 2010 17:25:32 +0000

how selcal code is selected/derived/identified for an aircraft.

By: Aviationer

Aviationer — Mon, 29 Dec 2008 12:59:28 +0000

Hey there.
First of all thx for commenting something. Really appreciate.

I’m aware that SELCAL device is used because of the high level background noise on HF comms. Pilots using these freq (oceanic and undeveloped countries) turn of the squelch and when they hear that sound they reply. I can’t see any useful application in VHF (I’ve never seen that) or UHF(?¿).

Cya later!

By: joe

joe — Mon, 29 Dec 2008 05:58:21 +0000

In ref to the statement: “Only airplanes operating oceanic routes use that system though.”

This is incorrect. SELCAL can be and is used throughout the world not just on oceanic routes.

Also- SELCAL can be used on both UHF and VHF freqs. The SELCAL monitoring device on the aircraft monitors all the freqs currently tuned on the flightdeck. if it detects its specific code it will alert the flight crew and indicate which radio it was detected on. then the crew will report on that frequency : “this is PanAm 123 responding to SELCAL”. The flight crew will then communicate with the facility who summoned them.

By: All Aviation Info.Com » Blog Archive » The SELCAL Code

All Aviation Info.Com » Blog Archive » The SELCAL Code — Wed, 03 Dec 2008 16:52:31 +0000

[...] In order to identify each single aircraft, a SELCAL code is assigned to each one. This code is made by 2 pairs of letters … Excerpt from:The SELCAL Code [...]