Author Topic: Whats on 121.5 MHZ  (Read 9216 times)

flyMKEmilwaukee414

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Whats on 121.5 MHZ
« on: April 14, 2006, 03:34:59 PM »
What kind of goverment is on 121.5 is it like the airport police or a special room for the emergery freqencie? does anyone know




 :D



FLY MKE!



Offline Umop3pisdn

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Whats on 121.5 MHZ
« Reply #1 on: April 14, 2006, 06:19:00 PM »
From what i looked up on the internet, "Aircraft Emergency" thats my unofficial answer

Offline stealth71

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Whats on 121.5 MHZ
« Reply #2 on: April 14, 2006, 07:05:03 PM »
121.5, and (243.0 militar, are the standard aviation emergency frequencies used to transmit distress calls. They are monitored by air traffic control facilities. 121.5 is also the frequency used to transmit emergency locator transmitter signals when an aircraft goes down, although that frequency is slowly being replaced and will eventually be in the 800MHz band. ELT's are activated upon hard impacts and begin transmitting a warbling tone that can be triangulated using an ELT locator either on the ground or by search and rescue aircraft flying overhead near the crash site. ELT's can also be activated by a hard landing. At our airport, we occasionally have to get our locator and track down an ELT after a plane has landed hard. It takes a while, but we eventually find the ELT that is going off and reset it.
Chris Hart
Missoula International Airport (MSO) live feed.
http://www.liveatc.net/search/?icao=kmso

Ham Call: KE7MH

Offline Umop3pisdn

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Whats on 121.5 MHZ
« Reply #3 on: April 14, 2006, 08:22:38 PM »
I was close   :D

Offline digger

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Whats on 121.5 MHZ
« Reply #4 on: April 14, 2006, 08:36:51 PM »
You may also hear it (and 243 in the UHF band) referred to as the "guard" frequency. I understand the name comes from the fact that somebody will always be tuned to that frequency--"guarding" it, so to speak.

Offline Tomato

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Whats on 121.5 MHZ
« Reply #5 on: April 22, 2006, 12:35:29 AM »
Sorry, what does ELT actually stand for?  It reminds me of the beacon that was used a few times in that cartoon with the flying bear?  :)
Serving you with CYVR... =)

Offline davolijj

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Whats on 121.5 MHZ
« Reply #6 on: April 22, 2006, 12:49:08 AM »
Quote from: Tomato
Sorry, what does ELT actually stand for?  It reminds me of the beacon that was used a few times in that cartoon with the flying bear?  :)


Electronic Locator Transmitter
Regards
JD

Offline Lexxx

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Whats on 121.5 MHZ
« Reply #7 on: April 22, 2006, 09:31:44 AM »
I think it's actually Emergency Locator Transmitter

Offline Jason

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Whats on 121.5 MHZ
« Reply #8 on: April 22, 2006, 09:37:31 AM »
Quote from: Lexxx
I think it's actually Emergency Locator Transmitter


I believe that's what JD meant.

Offline stealth71

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Whats on 121.5 MHZ
« Reply #9 on: April 22, 2006, 11:22:21 AM »
...and it's in my post above. :wink:
Chris Hart
Missoula International Airport (MSO) live feed.
http://www.liveatc.net/search/?icao=kmso

Ham Call: KE7MH

Offline davolijj

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Whats on 121.5 MHZ
« Reply #10 on: April 22, 2006, 11:57:06 AM »
Quote from: Lexxx
I think it's actually Emergency Locator Transmitter


Wow, that's the last time I post something after a night shift....I must have had the auto-pilot on when I wrote that one. :?
Regards
JD

Offline stealth71

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Whats on 121.5 MHZ
« Reply #11 on: April 22, 2006, 12:01:21 PM »
Well, in all fairness, it is electronic.  :mrgreen:
Chris Hart
Missoula International Airport (MSO) live feed.
http://www.liveatc.net/search/?icao=kmso

Ham Call: KE7MH

Offline Tomato

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Whats on 121.5 MHZ
« Reply #12 on: April 28, 2006, 11:51:54 PM »
lol... thank you, all!  :)
Serving you with CYVR... =)