I've had similar bad experience with the dacron rope from the following link. I was using it with pulleys to suspend dipoles from the tall tower at W6BX. It lasted about a year. http://www.radio-ware
I've happily used Pomona (dual banana) connectors. One on the tuner, one on each feedline. Not fancy, but it's easy, cheap, and it works. Jim K9YC _______________________________________________ ____
The method you suggest sounds like a very good one, and also would work with lightning suppressors. Jim K9YC _______________________________________________ __________________________________________
This is what I heard several years ago from my TV broadcast engineer friends. While this will change slowly over time, it is probably still mostly true. An important reason why many DTV transmitters
Arizona is big state, and has some serious mountains, including the area around Prescott. The town of Prescott itself is about 5,350 ft AMSL, and a mountain only 5 miles from the center of town hits
I will differ with you on that one, Jim. Under NEC, and most electrical codes, ALL grounds within an installation are required to be bonded together, including the lightning protection system. NEC (a
Hmmm. Is the NEUTRAL somehow being confused with the safety ground, or is the motor wired like an isolated ground (that is, insulated from ground, but grounded via a dedicated green wire)? The NEUTRA
Exactly! Connections to earth are important for lightning protection, but have little to do with radio systems. Radio systems work just fine in a 747 -- have you ever seen one trailing a ground wire
Yes, but as frequency increases, this technique begins to fall apart, thanks to the capacitance between the shield and the interior conductor. Jim K9YC Noise pick up on long ground leads can be reduc
There is an RFI forum sponsored by contesting.com. Not a lot of traffic, but very good people there. Jim K9YC _______________________________________________ _________________________________________
Standard practice in a multi-tower AM broadcast station is to bond the radials where they intersect each other, and to run an circumferentail arc along the points of bonding. IMO, that is probably ma
Consider yourself lucky. The computer that runs my 2006 Toyota Sequoia locked up when I tried to run 100 watts on 20m SSB, reducing my maximum speed to about 10 miles per hour (I was driving through
with I have identified SEVERE RFI from the Ethernet wiring and hardware to HF at a site in CA. I have identified at least two culprits (and there may be more), and they all boil down to LOUSY suppres
We've had several threads on this topic, and none of the options seemed ideal or conclusively good. I've moved to a new QTH, with lots of 100 ft tall redwoods. I need to hang long dipoles with heavy
Sort of, but not exactly. The impedance at resonance of a dipole will vary with its height above ground, as well as soil conditions. So there's no one good number. In general, a dipole closer to eart
1) See a text on antennas and bring your math. :) 2) Plug the problem into modeling software like NEC, making some rash assumptions about the nature of your ground. 3) Build the antenna and measure i
Don't be so quick to blame the wireless component of the system for this noise. Simple Ethernet hubs, switches, and access points (within PC's) are well known sources of exactly the kind of trash you
I have a tough reception condition at my new QTH -- a LPFM is 1.5 miles away and on the same channel as San Francisco's great jazz station (KCSM). Luckily they are about 160 degrees away in azimuth,
WRONG! Earth grounding for power systems is solely for protection against lightning and other potentially destructive on the power line. Earth ground should NEVER carry current (except under a light
They do when they carry current (as in a lightning strike, or when you pass current through them to measure the impedance to "earth"). Jim Brown K9YC _______________________________________________ _