be as accurate, with no movement, from GPS. A GPS receiver with only one antenna cannot determine the direction it is pointed. Sure, with some movement X, Y, Z changes and a differential estimate is
I should have excerpted all of K8RI's post, particularly this: Because the option to turn it on or off is programmed, it pretty much has to be a power hungry flux gate type. There are MEMS devices wi
I am in the process of constructing a commercial antenna for HF. The antenna itself is held in place by two 80' towers side-by-side with the antenna support going vertically between the two towers. T
Thanks for the responses I have so far: That's the info I was looking for. I'll be guying each section as WA8JXM/N5SDO suggest with Synthetic Textiles' 7/16" braided rope with a breaking strength of
but I have never found a place that sold them. That was my first problem - the vendor no longer supplies them. Commercial TV tower suppliers have them, but the cost is out-of-sight. I was on my own
Hi all, Wow! Thanks to everyone who has given me advice. Based on all that, my plan is to get on the horn tomorrow and find a local crane company with a machine that can navigate the dirt road to my
proposition" or "cost vs benefit"? What is the design goal? Answer: Freedom from antenna frequency dependence! I don't care if the gain is only equivalent to a 3 element Yagi, there's no tuning to r
Radio had at their Comm Central Operation in Cedar Rapids Iowa. Twin towers with the rotor at the bottom between the towers on a trunion and an 8 -10 inch mast going up to a log periodic antenna. I
the mast (the HyGain was designed to be tilted up in one piece) you will need to have something in place to allow the rigger to get to the top of the mast to bolt the antenna on. At least on the HyG
You are getting these results because you wound a conventional transformer where a Transmission Line Transformer (TLT) is required. The core is fine, but twist the primary with the secondary using 12
You have the necessary instrumentation to check it out and it's easy to do. First, 800 Ohms to 50 Ohms is a 16:1 ratio, so I don't get your 34:8 turns ratio. From 50 Ohms that would match 900 Ohms. I
Since I received a reply (without much substance) from my local PBS station, I thought I would share it. The info on my reception isn't relevant to the topic, but I included it because a TOWER is inv
I have some AB-621/G masts I was going to sell for aluminum scrap. They are missing the guy rings which slip over the tubes as the mast is erected. Ontario Surplus probably has these rings or they co
I also have a complete AB-155U mast kit (complete) which is certainly portable at 60 pounds for sale. I haven't thought about a price at this point... -Doug AE6SY --Original Message-- From: towertalk
Here is a seemingly authoritative view on the topic: http://www.machinerylubrication.com/Read/372/wire-rope-lubrication -Doug AE6SY --Original Message-- From: TowerTalk [mailto:towertalk-bounces@cont
Here's your wonderful government in action. These towers should be sold to hams, not scrapped - what a waste! http://www.govliquidation.com/auction/view?auctionId=5649967&convertTo=USD#I temManifest
Oh come on. They have their auction web site already set up and it has been for years. They would simply list each tower as an auction item and let the bidders go at it. If some or all didn't sell, t
Not true. GovLiquidation is a contractor to the government and by requiring mutilation to the extent that the towers cannot be used as originally intended, they are following the government's mandate
comprehension, but it's probably part of the huge batch of regulations that have been heaped on us within the past few years. REPLY: I've been bidding for decades on various surplus property, and af
Speaking of ground rods, the government has declared some (54 actually) excess at this link: http://www.govliquidation.com/auction/view?auctionId=5760358&convertTo=USD There are some structural alumi