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Old 27th December 2012, 07:11 AM   #1
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Join Date: Apr 2009
Location: in the land of OZ. right next to beach
Default South coast NSW antenna for ABC radio

Need to make an Antenna for my "new" troughline. Roof mounted, simple, probably only listening to JJJ and classic FM. (101.5 and 102.5? something like that) and I am assuming coming in from the same direction. Anyone else like me prepared to share there set up?
I see heaps of stuff on the net, big question is directional or not? I am sure they come from the same repeater, so maybe a YAGI?
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Old 27th December 2012, 08:27 AM   #2
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Join Date: Dec 2005
Location: Kuala Lumpur
You do want directional. Tuners work much better with the antenna ignoring reflected (multipath) signals coming in from the sides. Yagis are good, I had a 6 element back in the UK in a poor signal area.
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Old 27th December 2012, 08:38 AM   #3
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a masthead amplifier won't go wrong if you have gain issues.

I just use a discone for mine, I never listen to FM bcb tho, only aircraft on approach on the air bands.

Aside from that its shortwave whenever I can get the chance to listen in on a 80/40/20 meter inverted vee.
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Last edited by freax; 27th December 2012 at 08:45 AM.
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Old 27th December 2012, 10:16 PM   #4
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Location: Lakewood, Ohio
For everything you need to know (and much more) about antennas in (and near) the FM broadcast band:

88–108 MHz

EV's Best Top Rated FM and HD Radio Antenna Guide & Reviews

Last edited by Speedskater; 27th December 2012 at 10:18 PM.
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Old 27th December 2012, 10:40 PM   #5
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Join Date: Jun 2011
You need to assess the conditions.

If you're getting a strong signal you don't want a (very) directional antenna (they're all directional in horizontal polarization). They have a narrow beam and are more difficult to point.

You can ask somebody local to you.

You can test.

How to test:

Get one made from a piece of 300 ohm ladder feeder. Connect it up and see what you get. See if there's any difference between the channels you're interested in. Rotate it. You can buy a ready-made dipole or build something on a piece of board:

Try indoor first.

In the worst case you resort to an outdoor yagi with an antenna rotator and masthead amp.

That's it, really...

Oh, elevation makes a difference too.

Last edited by counter culture; 27th December 2012 at 10:55 PM.
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Old 28th December 2012, 03:44 AM   #6
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Join Date: Apr 2002
Location: New York State USA
Distance from transmitting source?

Terrain between it and you?

Your height above sea level, and the transmitters?

Your position - the highest point you can put an antenna - compared to the nearby terrain and/or buildings?

Power of the transmitting station(s).

Your area is: A) urban B) suburban C) rural

_-_-bear -- Btw, I don't actually know anything, FYI -- every once in a while I say something that makes sense... ]
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