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Author Topic: 10 foot non metallic mast  (Read 5743 times)
WN2C
Member

Posts: 470




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« Reply #15 on: September 28, 2012, 11:07:54 AM »

Bob, take a look at the pic on Cushcraft's web site.  The 2 13b's are mounted side by side (horizontally in pic) but there is no reason you cant mount one horizontal on one side and vertical on the other.  Look at the pic.  Or are you looking to do some thing like the A148-20t?

"I am not stacking them, I am using them together one horz the other vert or crossed polarized."

73 de wn2c Rick
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AA4HA
Member

Posts: 1489




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« Reply #16 on: September 28, 2012, 06:48:57 PM »

Single, 10' length of FRP, 1/4" wall, 2" square section is just under $100 at McMaster carr.  1/8" wall is also listed.  PVC, wood, is all very second rate.

Exactly right, thick wall square section fiberglass is very robust. It looks really good and is not going to get that very sad, saggy look like PVC does after one summer or auto-magically shatter into a million pieces on a windy very cold winter night.

PVC is definitely not rated for structural-anything. The fiberglass military mast kits would be a much better choice and come in 4' lengths if you were going to go that route. At least you could use the rest of them for a 20-30' tall field day antenna
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Ms. Tisha Hayes, AA4HA
Lookout Mountain, Alabama
N4CR
Member

Posts: 1672




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« Reply #17 on: September 28, 2012, 07:49:08 PM »

You could set one of them at a 45 degree slant, half way between vertical and horizontal and it would work either polarization at -3db.

Considering how much gain those have it might be just fine. Only you will know. It'd be the first thing I'd try.
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73 de N4CR, Phil

We are Coulomb of Borg. Resistance is futile. Voltage, on the other hand, has potential.
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