The use of air horns at the ballpark can be traced back to Hilda Chester who popularized the idea of fans making themselves heard. During the 1930's when she would attend games at Ebbets Field with a frying pan and an iron ladle. The frying pan was soon replaced by her trademark brass cowbell. The idea quickly took hold throughout the USA and while the cowbell continues to enjoy regional popularity, popular culture has chosen the loud blast of an sounder as its successor. Modern day sounders often are adjustable up to 120db that when combined with the acoustics of a basketball or baseball stadium can be clearly heard on the field, in the dugouts, and in the broadcast booth. Here are the best canister available on the net.

MOTORCYCLE AIR HORN Stebel Nautilus Chrome + FREE Shipping UTV ATV Power Sports
MOTORCYCLE AIR HORN Stebel Nautilus Chrome + FREE Shipping UTV ATV Power Sports
$38.99
Time Remaining: 22d 10h 40m
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MOTORCYCLE AIR HORN Stebel Nautilus Black + FREE Shipping UTV ATV Power Sports
MOTORCYCLE AIR HORN Stebel Nautilus Black + FREE Shipping UTV ATV Power Sports
$29.99
Time Remaining: 20d 11h 13m
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1PC air horn Portable hand held security safety Party Sports LOUD BLAST 81OZ
1PC air horn Portable hand held security safety Party Sports LOUD BLAST 81OZ
$5.00
Time Remaining: 29d 12h 7m
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2 air horn Portable hand held security safety Party Sports boat LOUD BLAST 81OZ
2 air horn Portable hand held security safety Party Sports boat LOUD BLAST 81OZ
$7.91
Time Remaining: 23d 13h 59m
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AIR HORN SPORTS BOATING RACES DEAFENING LOUD FREE LIGHTENING FAST S H
AIR HORN SPORTS BOATING RACES DEAFENING LOUD FREE LIGHTENING FAST S H
$3.98
Time Remaining: 17d 12h 44m
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Air Horn Super LOUD Hand Held Gas Sports Races Boat Marine Warning Coyote Scare
Air Horn Super LOUD Hand Held Gas Sports Races Boat Marine Warning Coyote Scare
$7.29
Time Remaining: 11d 12h 38m
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Air Horn for Parties Birthdays Special Events Sports Safety Games Camping
Air Horn for Parties Birthdays Special Events Sports Safety Games Camping
$4.99
Time Remaining: 17d 11h 44m
Buy It Now for only: $4.99

Air Horn Can Hand Held Pump Sports Loud Noise Maker Safety Parties Events NEW
Air Horn Can Hand Held Pump Sports Loud Noise Maker Safety Parties Events NEW
$6.99
Time Remaining: 10h 43m
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Air horn Portable hand held security safety Party Sports LOUD BLAST New
Air horn Portable hand held security safety Party Sports LOUD BLAST New
$4.95
Time Remaining: 22d 15h 53m
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Of course you could always build your own Air Horn...

You will need:

1 - 35 mm film canister

a plastic grocery bag, scissors

5/8" drill bit

3/8" drill bit

3/4" drill bit

a drill

Take the empty plastic 35 mm film canister and cut a 5/8 inch hole in the bottom of the canister and a 3/8 inch hole in the side of the can near the bottom.

Cut a 3/4 inch hole in the lid of the canister. Cover the mouth of the canister with a thin plastic sheet cut from a plastic grocery bag and pop the lid on over it. The plastic sheet now forms a membrane.

Push a length of 5/8" O.D. PVC pipe into it the hole in the bottom of the canister and slide it in until the end of it rests against the membrane. When you blow through the hole in the side of the canister it will give out a tremendously loud tone.

With a little adjustment of the position of the tube, the pressure of the blown into the hole will lift the plastic membrane off the end of the pipe momentarily allowing the air to escape. The tension of the membrane causes it to flap back and the process repeats rapidly causing the noise.