FlightAware Discussions

LNA or no LNA

That is about the distance @vk5mw is receiving.

That site differentiate LOS and Radio Horizon where the Radio horizon - Service range (dr) is significantly longer than Line of Sight distance (dl)

S.

Little busy today. Perhaps i shouldn’t mess with anything. FR24 logged my max range today @ 251NM

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Yes, you are pretty much at the max. No breaks in the lines also indicate no overloading or physical obstacles.
Maybe you can post a pic of your antenna and surroundings, just for the curious people?

PS: For a plane at 43000 ft, the calculated distance becomes 471 km = 254 NM. Sure that’s more like for a Gulfstream type of plane, but it can happen for commercial ones too.


Have a fold down mast that I extended to ensure it is well clear of the roof line. In the left of the pic you can see my home made cantenna but was lacking range (180nm) and un-reliable. Very basic antenna with coax braid bonded to the base of a coke can leaving 69mm of center conductor exposed. Got me receiving ok to get started i guess.

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Yellow curve = aircrafts at 10,000 feet elevation
Blue curve = aircrafts at 45,000 feet elevation

Location of antenna = -30.57, 136.91
Height of antenna above ground = 30 feet (=411feet above sea)