Re: Topband: standoff for inv L

2020-12-28 Thread Phil Lefever via Topband
I'd likely continue to use the fiberglass but I might fit a hardwood dowel inside its length to stiffen it. PVC can work that way too but you MUST have something to make it rigid. I had a side arm made from wood stuffed grey PVC pipe that was out in the weather for over 20 years with no

Topband: standoff for inv L

2020-12-27 Thread Frank VO1HP
At my remote site I have an inverted L that is supported by a 40ft square aluminium lattice “frangible" tower. Yes I have it guyed. There is a 14ft fibreglass pole fixed to the top of the tower. There is short piece of aluminium tubing in the top of the pole and the bend in the L wire is

Re: Topband: standoff for inv L

2020-12-27 Thread Wes
FWIW Probably 15-20 years ago I was thinking of building an LPD HF antenna,  I purchased two 20 foot lengths of 2" x 1/8" wall square fiberglass tubing for the boom.  The antenna never happened and the tubing has been laying on the ground in the Arizona sun since then.  It looks essentially

Re: Topband: standoff for inv L

2020-12-27 Thread Grant Saviers
I've been using 8' 1.5" dia painted fiberglass top and bottom of my 85ft T as standoffs from a fir tree. An 18" long bracket is lagged to the tree both places to make it stable and lower the FG stress. OK after 6 years, occasional ice and snow. PVC gets very flabby at 80F and higher and

Re: Topband: standoff for inv L

2020-12-27 Thread Mike Smith VE9AA
VE9AA: I don't have a tower supported Inverted L, but I have a slightly different way of supporting the center of a 20m 4-square array of inverted L's and wanted something non conductive so I use 1.5" grey electrical PVC conduit and it's stood up many years in a harsh environment with wild

Topband: standoff for inv L

2020-12-27 Thread Rob Atkinson
I've used a PVC pipe around 1.5 or 2" o.d. and ~ 3 feet long, for the past 11 years. No problems so far but it is braced with dacron from the insulator end, back up to the mast a few feet above where the PVC is clamped to the mast. Mine is unprotected from sun but the sun exposure is less in

Re: Topband: standoff for inv L

2020-12-26 Thread Jim Brown
On 12/26/2020 3:25 PM, WW3S wrote: should I continue to go with fiberglass How about PVC conduit, taped to protect it from UV? 73, Jim K9YC _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Topband: standoff for inv L

2020-12-26 Thread WW3S
I lost my fiberglass pole that I use for a standoff for my inv L off my 50' tower.second or third time in 12 years or so, victim of the recent ice/snow storm we just had.I've been using fiberglass to isolate it from the tower.but the wire for the antenna goes thru an insulator