Unfortunately, the fine thread hardware supplied with R25 towers has a nasty habit of rusting over time. Coarse threaded galvanized hardware should prevent this condition. (I know, it's not what the
Good information. I connect the Rotor Start Caps at the BASE of my tower on the long runs, allowing me to double up the CW and CCW motor wires to the house. Tom N4KG _________________________________
That was Roger Cox of HyGain and he later RETRACTED that statement. Even if were true there are ways around the problem: First, on the cover closest to the boom, it does NOT matter since the cover is
I've been using 3/4 inch CATV for my 300 to 600 ft runs in multiples of 1/2 WL (without baluns) for10 to 20 years. My BEST connections (long term - NO failures) have been to simple solder the center
The VF (velocity factor) or CATV Hardline is *roughly* 0.8, but the best approach is to measure it or verify that a 50 ohm load is seen again at the end of the line. For intermediate lengths, multipl
The VF (velocity factor) or CATV Hardline is *roughly* 0.8, but the best approach is to measure it or verify that a 50 ohm load is seen again at the end of the line. For intermediate lengths, multipl
The VF (velocity factor) or CATV Hardline is *roughly* 0.8, but the best approach is to measure it or verify that a 50 ohm load is seen again at the end of the line. For intermediate lengths, multipl
There are an infinite number of solutions. The most popular are to tune the length for resonance where the is ZERO reactance and then match the (low) real impedance to 50 ohms, OR, to adjust the leng
I run my CATV hardline in shallow OPEN trenches and mow over it. Tom N4KG On Mon, 12 Aug 2002 22:16:37 -0400 "Mel Martin \(VE2DC\)" <ve2dc@rac.ca> writes: ____________________________________________
I run my CATV hardline in shallow OPEN trenches and mow over it. Tom N4KG On Mon, 12 Aug 2002 22:16:37 -0400 "Mel Martin \(VE2DC\)" <ve2dc@rac.ca> writes: ____________________________________________
Putting the Start Cap at the tower base is an excellent idea. I've been doing this for years on my 2L40 at 95 ft which is 400 ft from my house. I used #14 house wiring for the CW, CCW, and solenoid r
My solution to this problem is to cut a piece of PVC lengthwise and place it over the tower leg to prevent chewing up the leg / galvanizing. I also drill ONE additional hole for each U bolt, spaced t
There is MORE benefit in paralleling two #18 wires (CW and CCW) than paralleling a #14 or #16 ground / solenoid wire with a #18. Tom N4KG On Wed, 14 Aug 2002 15:49:35 -0400 David Jordan <wa3gin@erols
Since your tower face "points" to your desired target (EU), just take a 1/4 inch aluminum plate and drill holes for 4 U-bolts (1-1/4 inch or 1-1/2 inch with PVC shims for the legs). Tom N4KG ________
N4KG comments inserted below. The short answer is NO ! Think of a Yagi with insulated elements. ANY conductor longer than 1/2 WL out to several WL WILL act as a reflector. ANY conductor between 0.3 a
Here's some ANECDOTAL examples of a single leg side mounts: I had a 3L20 on a 24 ft boom mounted to ONE LEG of a R35 tower (leg diameter and thickness identical to R25) at 65 ft for several years wit
Have you ever driven into a Parking Garage while listening to an AM BC station? It practically disappears, even Local Stations. The 'mesh' formed by the steel columns and rebar in the concrete is nea
Another possibility is that one of the feedlines between the Comtek Box and one of the elements may have some problem, such as an open shield or a contaminated shield (which has turned black), etc. T
Another possibility is that one of the feedlines between the Comtek Box and one of the elements may have some problem, such as an open shield or a contaminated shield (which has turned black), etc. T
Graphs of cable loss vs frequency for MANY types of cable, including RG58, RG59, RG8, RG213, CATV hardline and 50 ohm hardline can be found in the Transmission Line Chapter of any ARRL Antenna Book (