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Author Topic: 2.4ghz/Router antenna as 1090mhz antenna?  (Read 2103 times)

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Offline kiwikiean

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2.4ghz/Router antenna as 1090mhz antenna?
« on: July 22, 2017, 08:22:51 AM »
Hi all,
I was looking through E bay for a 1090mhz antenna and could not get over the amount of what look to be 2.4ghz antennas with 1090mhz in the tittle. My question would a 2.4ghz antenna be any good? I am looking at a YAGI antenna for my receiver to get better range in one direction.
Thanks, Kieran.

Offline Anmer

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Re: 2.4ghz/Router antenna as 1090mhz antenna?
« Reply #1 on: July 22, 2017, 08:45:24 AM »
Welcome.

Are you looking to mount the antenna externally?

I have a a window mounted omni antenna, amongst others, that has the whole house behind it facing south.  The red line indicates the north-south divide.

You'll be surprised what coverage it gets to the south.

I'd be surprised if those eBay antennae will be of any use for 1090 MHz. I don'y see them being retailed by any of the established suppliers.
« Last Edit: July 22, 2017, 08:52:28 AM by Anmer »
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Offline kiwikiean

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Re: 2.4ghz/Router antenna as 1090mhz antenna?
« Reply #2 on: July 22, 2017, 10:14:34 AM »
Very nice, thanks
I live down low so yea not the best reception I was looking to mount a external yagi/directional antenna, currently have a omni and it does the job but only 50mn at max.

Offline Anmer

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Re: 2.4ghz/Router antenna as 1090mhz antenna?
« Reply #3 on: July 22, 2017, 10:33:00 AM »
Without knowing your location and terrain/buildings, 50nm may be the best you can hope for.

Try using this app:

http://www.heywhatsthat.com/

1090 MHz reception is normally line of sight.

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Offline kiwikiean

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Re: 2.4ghz/Router antenna as 1090mhz antenna?
« Reply #4 on: July 23, 2017, 07:25:23 AM »
Hi Anmer thanks for your reply.
I am approx 25.07 m / 82.26 feet from sea level. Antenna would be mounted around here on a roof. https://www.google.co.nz/maps/place/Bake+Rite+Systems+Limited/@-36.765483,174.7278291,17z/data=!3m1!4b1!4m5!3m4!1s0x6d0d397649697d17:0x5928515dda45d5db!8m2!3d-36.765483!4d174.730017.
Bit off topic but would one of these be any good for receiving air band? http://www.trademe.co.nz/electronics-photography/tvs/cables-aerials/auction-1377137960.htm.
Cheers, Kieran.

Offline Anmer

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Re: 2.4ghz/Router antenna as 1090mhz antenna?
« Reply #5 on: July 23, 2017, 09:03:51 AM »
Thanks for the location.

I'd recommend the app.  You can set your location and check your line of sight range.  You have some very high ground in various directions which may be blocking signals, especially where the aircraft may normally route.

http://www.heywhatsthat.com/

For airband you also need a suitable antenna for the required frequencies.  I don't think the one in your link will be any use.
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Offline Truetrack

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Re: 2.4ghz/Router antenna as 1090mhz antenna?
« Reply #6 on: July 23, 2017, 09:38:38 PM »
Hi Kieran
For 1090 best is a dedicated single freq antenna.
If a Yagi is wished industrial manufactured Yagi are costly,
IMHO too dear not knowing if it helps anyway.
Logperiodics are no good either as intended for wideband differing freqs e.g. 1 to 10 ratio.
For each particular freq only some 3 pairs of elements are excited.
As for the 2.4 GHz Yagi these are way off and you cannot precisely enlarge the elements and spacing .
even though there are design-progs Homebrew is critical as too many variables
exact Element length / diameter / spacing / metal boom or other/ elements passing thru boom
or attached.
I do not know what Vertical Omni you have at present but you might have improvement with
a vertical Collinear which will bring down the lobe of most sensivity more to the horizontal
compared to other monoPoles or groundplane.
There are several homebrew instructions in the Net e.g. made out of Coax-sections soldered
together and housed in a covered PVC tubing. Depending on how many Element sections total
length about 1.2 to 1.6 Meters.

For VHF Airband you may prune any whip like Mobile-CB .

Regards
Klaus

Offline kiwikiean

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Re: 2.4ghz/Router antenna as 1090mhz antenna?
« Reply #7 on: July 23, 2017, 11:36:51 PM »
Hi Guys, Thanks for the reply I am currently using a small J-Pole antenna for asd-b around 10-15cm long side.

Offline abcd567

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Re: 2.4ghz/Router antenna as 1090mhz antenna?
« Reply #8 on: February 18, 2019, 01:28:36 AM »