Solid wire lasts longer, and is easier to connect to later because it is easier to remove all corrosion without chemical cleaning or strand-by-strand cleaning. Also beware of gutting old wires, beca
Not necessarily. If the antenna is properly balanced, or properly unbalanced, that should be all the isolation necessary. Beverages are sensitive to common mode because people use autotransformers,
There are two potential problems with this. As general rules: 1.) Grounding any antenna which is dependent on a ground system to be resonant will maximize reradiation. 2.) Resonant elevated radials,
Shunt fed towers can be detuned, or taken out of the picture by phasing a small sample of signals into the RX antenna. It depends on what is on the tower, the shunt system, and the grounding. It can
RG-6 is a type of copper shield cable rarely seen, but same-size CATV and MATV cables are commonly called RG-6. Any radiation through shields of typical "F-6" CATV or MATV drop cables, and actually
Use flooded cable outside. CATV F-6 or F59 cables are great for 160, or any HF band use. I use ten's of thousands of feet of the stuff, much of which has been installed in the early 2000's. My trunk
My rig (FT-dx5000) is located on a desk. Immediately under the desk is my computer, and just above the rig is a shelf on which sits 2 flat-screen monitors. One of the points made in Low-Band DXing is
Crimp connections are used all through the CATV industry, and many other places, and are just fine for many years when properly made. All of my internal house wiring is non-flooded, as are all the c
White papers: http://docs.commscope.com/Public/Coax101.pdf Although the test frequency and method is not described, this shows the difference between Quad shield and single foil and braid is 7 dB bef
Sorry. My mistake. I thought the subject was receiving cables, related to Beverages, and common mode noise, and that somehow a parallel was drawn to a stb measurement on LMR400, which was a "needles
I don't know how anyone could put flooding between the foil and center dielectric, or why they would want to. Quality cables have the foil bonded to the center dielectric. The LMR400 I purchase is m
The inner foil should be bonded directly to the dielectric surrounding the center conductor. Otherwise, the cable will have an outdoor life issue. I can't recall the last cable I saw without the inn
While this does exist at frequencies below where skin depth in shields occurs, the "magnetic field thing" is a very common myth, or misconception, with radio frequency signals. A monitor with low fr
I was distracted for a week trying to recover a lost disk but I put the SSD in place again yesterday. This time I wrapped the SSD in aluminium foil and put 2 clamp on cores on the SATA cable. I fired
I'm not disagreeing with anyone, but it is important to re-enforce how things really behave and what actually causes problems. Absolutely. That is true enough on HF bands for low power gear, although
Unless I missed it somewhere, there isn't enough data in that link to judge how useful the cores are, or even what they are. Z by itself is not very meaningful. For example, 500 ohms of reactance or
If that was the case, they had a bad slug. The rating of the Bird 43 and standard slug is + or - 5% of full scale anywhere on the scale within the range of the slug, but it does not go far out of to
It is not good fellowship, or good manners, to accuse someone as helpful as ON4UN of intentionally lying or misleading people. John, ON4UN, is genuinely helpful to people, and does the best job he c
Hi Lee, Laird does not have complete data on all of their cores. For example... For higher power applications and to avoid heat, especially with unknown load situations, we want a core that has low
<<<For higher power applications and to avoid heat, especially with unknown load situations, we want a core that has low loss tangent or high Q. For good suppression, especially with unknown load sit