Call Search
     

New to Ham Radio?
My Profile

Community
Articles
Forums
News
Reviews
Friends Remembered
Strays
Survey Question

Operating
Contesting
DX Cluster Spots
Propagation

Resources
Calendar
Classifieds
Ham Exams
Ham Links
List Archives
News Articles
Product Reviews
QSL Managers

Site Info
eHam Help (FAQ)
Support the site
The eHam Team
Advertising Info
Vision Statement
About eHam.net

   Home   Help Search  
Pages: [1]   Go Down
  Print  
Author Topic: pvc pipe mast with copper j-pole  (Read 681 times)
KJ4MXO
Member

Posts: 10




Ignore
« on: September 20, 2009, 11:49:30 AM »

I am making a copper pipe j-pole(2 m) and am wondering if 30' of pvc pipe will hold it.The pipe will be bolted to a shed about half way up.50' of coax will run from there to house.
Logged
KB6VIV
Member

Posts: 195




Ignore
« Reply #1 on: September 20, 2009, 01:24:24 PM »

Whether it would be stiff enough would depend on how thick the pvc was.  2"O.D. schedule 80 might be stiff enough.  Hard to know for sure.  Bigger concern might be lightning.  Depends where you live.  Wouldn't worry about it at all in Los Angeles.  But it would be a death wish in Miami.
Logged
WB2WIK
Member

Posts: 20540




Ignore
« Reply #2 on: September 20, 2009, 01:29:52 PM »

I doubt it, unless it's very large diameter thick walled PVC.  2"-3" diameter might work, anything smaller is likely to just bend over at the first wind.

I'd use aluminum or galvanized steel pipe.

Chain link fence top rail tubing is probably strong enough for this, and it's cheap at Home Depot.

WB2WIK/6
Logged
KJ4MXO
Member

Posts: 10




Ignore
« Reply #3 on: September 20, 2009, 05:02:47 PM »

Thanks for the input.By the way I live in northeast florida.all kinds of lighting.
Logged
KB6VIV
Member

Posts: 195




Ignore
« Reply #4 on: September 21, 2009, 07:31:34 AM »

Thought I might add why it's a bad idea to use non-conductive mast in a high lightning area. A well grounded metal mast provides a path to ground. Use a non-conductive mast and the only path to ground is through your cable right into your radio.
Logged
KB6VIV
Member

Posts: 195




Ignore
« Reply #5 on: September 21, 2009, 09:53:39 AM »

You might consider this product.  Telescoping Aluminum tubing with slit ends to use hose clamps.

http://www.dxengineering.com/Products.asp?ID=278&SecID=136&DeptID=43
Logged
Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.11 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!