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Messages - Ancien

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31
General Discussion / Re: PA28, C172, C182 remote aerial install
« on: November 28, 2016, 11:26:57 pm »
Arcticash

For the SDR antenna you can modify the supplied one without any extension.

You will need a suction cup ,available here:
http://www.ebay.co.uk/itm/Suction-Cups-Any-Type-Wide-Range-Clear-Plastic-Rubber-Window-Suckers-/200790859945?var=500253280499

See 1st photo

Prise out the disc  under the antenna base and get rid of the magnet. Drill disc to fit  a small bracket as in photo 2. re-insert the disc and you can stick it on any window [vertically]. You can see I have shortened the detachable bit so that the piano wire is 50mm giving a total antenna length of 69mm.[now tuned to 1090mhz]
See here:
http://forum.pilotaware.com/index.php/topic,438.msg6096.html#msg6096

If you want to be more compact see my last post and the antenna on the right. Photo 3 is a mock up of this.

You can get extension leads of all sorts of length cheaply on ebay from UK sources. [Make sure SMA connectors are not RP -reversed polarity] You can mount the big antenna on a suction cup in the same way - just don't put them close together.

32
General Discussion / Re: PA28, C172, C182 remote aerial install
« on: November 28, 2016, 02:46:13 pm »
I have been playing around with antennae too.

The 1st photo shows the standard end feed dipole in my vintage high wing four-seater.
This works very well but I thought it a bit clunky.

The standard centre feed dipole advertised didn't look much tidier so I made one myself. The next photo is my first attempt. Much less intrusive in the field of view but still a bit thick.

The third photo is my latest dipole. The horns are 0.75mm rods so it is about as unobtrusive as I can make it.

The last photo shows both antennae.
The 1090 antenna [ from the SDR dongle] is just an extension lead with 69mm of the shielding stripped off at the end and stiffened with heat shrink. It works well with all transponder modes and I would recommend this for people using PAW as a portable as the plastic suction cup can be mounted on any window.

In the spring I plan on trying an external antenna [approval needed] so there's hours of fun yet!

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