A beacon range is controlled mostly by its power output. The max range possible (taking into account the height of the aircraft and the curvature of the earth is about 600 nm over land) It is often restricted in some high density areas though to avoid interference.
A few formulas:
Range over land = three times the square root of the power output
Range over sea = nine times the square root of the power output
Non-directional beacons
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Re: Non-directional beacons
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Re: Non-directional beacons
Time of day has a dramatic effect on these LF signals. At night the propogation of such signals is enhanced.
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Re: Non-directional beacons
If Australian amateurs are allowed a LF segment, we'd probably learn a lot more about LF propagationWPXZBP wrote:Time of day has a dramatic effect on these LF signals. At night the propogation of such signals is enhanced.
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Re: Non-directional beacons
Ranges for each NDB is generally in ERSA anyway. If not the DAP's East & West or the Jepp Charts...spartacus wrote:A beacon range is controlled mostly by its power output. The max range possible (taking into account the height of the aircraft and the curvature of the earth is about 600 nm over land) It is often restricted in some high density areas though to avoid interference.
A few formulas:
Range over land = three times the square root of the power output
Range over sea = nine times the square root of the power output
CC
Re: Non-directional beacons
so... its in the aip somewhereConstableCare wrote:Ranges for each NDB is generally in ERSA anyway. If not the DAP's East & West or the Jepp Charts...spartacus wrote:A beacon range is controlled mostly by its power output. The max range possible (taking into account the height of the aircraft and the curvature of the earth is about 600 nm over land) It is often restricted in some high density areas though to avoid interference.
A few formulas:
Range over land = three times the square root of the power output
Range over sea = nine times the square root of the power output
CC
Nathan Fenn
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Anything I say is my opinion, and has nothing to do with/does not reflect the views of anyone I was/am/will be involved with/employed by/volunteer for/associated with. There, I think that should cover it!
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Re: Non-directional beacons
Whilst this may be true, it's a generic range only. Specific ranges are generally found in those publications listed...Nafenn wrote:so... its in the aip somewhereConstableCare wrote:Ranges for each NDB is generally in ERSA anyway. If not the DAP's East & West or the Jepp Charts...spartacus wrote:A beacon range is controlled mostly by its power output. The max range possible (taking into account the height of the aircraft and the curvature of the earth is about 600 nm over land) It is often restricted in some high density areas though to avoid interference.
A few formulas:
Range over land = three times the square root of the power output
Range over sea = nine times the square root of the power output
CC
CC
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Re: Non-directional beacons
Sorry for the thread necro, but I didn't see much point in creating a new topic.
From where I live North of Brisbane, I can always receive the NDB from the airport at Coolangatta, near the border between QLD and NSW. It would be just a shade over 130 km in a straight line. It transmits on 278 or 279 kHz, but I'm not sure what the output power is. It broadcasts a slow morse code callsign of "CG".
From where I live North of Brisbane, I can always receive the NDB from the airport at Coolangatta, near the border between QLD and NSW. It would be just a shade over 130 km in a straight line. It transmits on 278 or 279 kHz, but I'm not sure what the output power is. It broadcasts a slow morse code callsign of "CG".
Note: My username 'VK4006SWL' is not an officially recognised callsign. I am not a licensed amateur radio operator.
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Re: Non-directional beacons
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→Arguing with a fool proves there are two
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Re: Non-directional beacons
Thanks. Hopefully, I'll be doing the Foundation level testing in a few weeks.robbage wrote: <snip> (oh and good luck with your studies) <snip>
Back to the beacon... I sometimes leave it playing quietly in the background while I fall asleep. I guess whale sounds aren't my thing.
Note: My username 'VK4006SWL' is not an officially recognised callsign. I am not a licensed amateur radio operator.
Re: Non-directional beacons
130km's is pretty good range to still be picking up an NDB. The "CG" in morse is an identifier for pilots, so that they can confirm that they have entered the correct frequency and are using the right beacon.
Nathan Fenn
WARSUG Aviation Band & Reviews Moderator
Anything I say is my opinion, and has nothing to do with/does not reflect the views of anyone I was/am/will be involved with/employed by/volunteer for/associated with. There, I think that should cover it!
WARSUG Aviation Band & Reviews Moderator
Anything I say is my opinion, and has nothing to do with/does not reflect the views of anyone I was/am/will be involved with/employed by/volunteer for/associated with. There, I think that should cover it!