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Author Topic: Hustler 5BTV  (Read 1744 times)
24X822
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Posts: 9




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« on: January 25, 2008, 10:17:49 AM »

I am looking at putting one of these on top of my steel building (32X40). Can anyone tell me if I can use the building as a ground plane (radial) or would I have to put out radials to make this work.

73's

Randy: KD0CRH
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AA4PB
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Posts: 12836




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« Reply #1 on: January 25, 2008, 10:38:13 AM »

It'll probably work okay *IF* the various metal roof pieces are bonded together very well. I wouldn't count on a few sheet metal screws making good RF joints.
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W5GA
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Posts: 430




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« Reply #2 on: January 28, 2008, 09:09:48 AM »

I did this with the metal roof on my house and a home brew 40m vert.  It works just fine.

73, Doug
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TF3JB
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Posts: 6




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« Reply #3 on: February 04, 2008, 01:02:08 PM »

I would advise you to use the building-roof as a ground for your 5BTV. Try to mount is as close to the roof as you can. I would say up to 6 inches is OK but much more might give you resonance problems. I've seen a few of these antennas mounted incorrectly, perhaps 4-5 feet off a roof, which means you would resort to a different feeding style that were used at the time.

It is correct, that if the metal plates on the roof are not well connected to each other, and particularly if the roof is very old, you might experience a capacitance effect that could give you a problem. I would though not worry about that at this moment.

The 4BTV and 5BTV have been popular in this country for the last 20-30 years and most of them are mounted on top of a roof with metal plates. You might consider guying your antenna (we must do it up here in the north) but take care to use a non conductive thread for the guying. You can find a guying formula in the handbook.

73 de TF2JB.
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KL7IPV
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Posts: 984




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« Reply #4 on: February 07, 2008, 10:15:45 PM »

My uncle, WA6QAY (SK) used a Hustler vertical antenna on top of his metal shed for years and worked CW all over the world. If the roof is metal and screwed to the rest of the metal shed, it should work fine.
Frank
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ZL1BR
Member

Posts: 32




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« Reply #5 on: February 11, 2008, 01:32:29 PM »

I use a 4btv mounted on top of a peaked steel garage roof. Antenna is mounted right on top of the centre ridge and the roof slopes down about 30 degrees either side of the ridge. Works superb. Most people are suprised when i tell them i`m using a vertical with 100w

Regards

Chris
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