The motor is AC and the internal transformer 24 volts so you can add a boost filament transformer of 6 or 12 volts in series with terminal 2. I don't recall the current needed since its been 25 years
One problem is metal fatigue. There will be small movement of the cable around the sheave which will stress cycle the steel strands. Over time the strands can reach their fatigue limit and break. The
McMaster-Carr stocks garolite and related materials in sheet, angle, rod and tube. Grant KZ1W _______________________________________________ _______________________________________________ TowerTalk
Peak gusts on my CC A4S @ 40' pole were probably 70+ mph. It and a 40m rooftop vertical & 160m dipole were ok. Bare ridgeline at 1550' east San Jose foothills. So Cal had it much worse. Grant KZ1W __
What would be very helpful is to have forensic reports for any crank up towers/cables/winches that have failed. One was recently reported on TT and I've heard of others in the past. What fails and wh
I've found threaded aluminum conduit at the recycle yard for scrap prices. I use it for a falling derrick 20' long in a 2 1/2" size and think it will handle modest load to 30' self supporting. You ca
Ray, My application was the same as yours - erect an irrigation pipe vertical. It has the same sizing/threads as the threaded conduit at Home Depot - the type is IMC vs the thin wall not threaded EMT
Have the same tower, I am wondering about the benefit of grouting, especially after taking down a TMM433 that had a lot of rust underneath the base plate as a result of the grouting. My inspection of
I've used Pacific Galvanizing in Oakland for parts, they may be the nearest to you. 100# minimum, I forget what it cost. They have a strip tank. If there is too much rust, they will charge for sandbl
Sailboat mast steps are available. One style http://www.westmarine.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=10001&storeId=11151&partNumber=110742&langId=-1 Some nice features - boots ca
I've bought A LOT of HF tools over the past 15 years and have the following rules of thumb - (IMHO of course) The quality improves every year, so what used to be marginal may now be acceptable. Anyth
I just put in Ufers in a perimeter foundation. According to code here they need to be a 20' long rebar less the stub out and tied to the other rebar (4 x #5 x 262' in my case). #4 (1/2") was used for
Tom, Back to your question - you should declare VICTORY! The wide bandwidth may be due to the various lengths and/or couplings of the elevated radials. There is nothing to indicate you have high loss
I noticed that a used G2800 I bought had Helicoil inserts in the base holes. I don't know if this was a retrofit or factory install. In either case, Helicoils substantially increase bolt pull out rat
Code requires everything in a metal building to be grounded, extra ground wires to the structural steel from the service entrance ground, all plumbing grounded to same, etc. There is nothing special
I know that the current generation HD DirectTV DVR communicates with the dish via some protocol. I think the way it works is the LNA/downconverter/multi switch at the dish downconverts the desired st
I checked my reference text, "Handbook of Fibre Rope Technology" and Dyneema has excessive creep vs Kevlar. Dyneema SK60 creeps 0.63% at 15% of breaking load in 100 days. At 30% load it creeps 9% in
Several possible answers - Some fibers creep at low (15% breaking) loads until they break. Not so good for guys! Some creep and stabilize to a fixed strain w/o much change in breaking strength. Phill
Try Ramik, it works for many rodents. About $50 for 15lbs. Chipmunks might be "off label". Grant KZ1W _______________________________________________ _______________________________________________ T
Dick, I've used left over PEX radiant heating tubing to make guys visible. Still there with good color retention after 7 years in the CA sun even though PEX is not particularly UV resistant. It comes