Imagine a rotor floating in space. Imagine pointers aimed North attached to the upper and lower sections. Assume the lower portion is fixed and you start the rotor turning CW, increasing the angle be
Assuming a S (or N) STOP, South will still be South, and North will still be North. The SIMPLE solution is to paste and E over the W and a W over the E on the indicator. Tom N4KG On Tue, 10 Sep 2002
N4KG response inserted below. 25 That information was first published at least 30 years ago, LONG before computer modeling was available, and has been MISINTERPRETED for decades. First, there is NO S
I have witnessed two crane installations of R45 tower. Sub sections were previously assembled equal to the spacing between guy wires (30 and 40 ft respectively). For perfectly vertical lift, THREE st
The SteppIR 3L Yagi has a 16 ft boom. This corresponds to 0.46 WL on 10M, 0.34 WL on 15M, 0.23 WL on 20M. The W2PV Yagi Design Book shows gain and F/B curves for 3L Yagi's with boom lengths from 0.1
Interesting feedback. I guess that calls for more modeling to see what the other performance parameters are when optimized for F/B or SWR. I do NOT mean to bash the SteppRR. I think it is a NEAT idea
One solution would be to build a FENCE (wood, chain link, wire, whatever) high enough to prevent easy access to the tower. Tom N4KG ________________________________________________________________ GE
ANY and ALL designs represent trade-offs between COST, SIZE, WEIGHT, WINDLOAD, PERFORMANCE, MANUFACTURABILITY, and probably several other considerations, including the ability to make a profit for th
Your statement that the SteppIR antenna is a "no compromise" antenna ignores the fact that the ELECTRICAL spacing is DIFFERENT for EACH BAND. How can that be OPTIMUM? THAT is the compromise in the St
SNIP HF covers 3 to 30 MHz with corresponding wavelengths of 328 ft down to 32.8 ft for 1 wavelength (WL) or 164 ft to 16.4 ft for a 'resonant' HALF WL. This means that to avoid resonance in the HF r
Actually, EVERY Yagi is a compromise, trading off between Gain, F/B, SWR, Bandwidth, Size, Weight, Cost, etc. Generally speaking, Maximum Gain, Maximum F/B, and best 50 Ohm match (for a split dipole
DIPOLES and LONG WIRES are EFFECTIVE DX Antennas when installed at appropriate heights and in the clear. Out of curiosity, I decided to see just what I could do with wire antennas when the last of th
One of the locals hired a guy who had done a number of CB installatons to install 100 ft of Rohn 25 and his VHF antennas. Apparently this CB'er had never heard of the TRAM method of raising antennas
Another N4KG NEVERism: NEVER *assume* a tower base alone will support an unguyed tower, even just a few sections unless you KNOW the exact details of the base. Rohn cautions that most tower accidents
AIR Conditioning tape can be found in 6 inch wide rolls of sticky backed heavy aluminum foil. That should hold up better in the sun and rain. Tom N4KG ________________________________________________
Hmmm.... I'm not sure if I would trust USED grips on a new installation where they had been unwound and then rewound... I buy my grips NEW by the box, directly from Preformed Line Products in Ohio. R
For those who want better F/B on 10M with the SteppIR 3L Yagi, a separate 10M reflector could also be added which I expect would not degrade performance on the lower bands. That is a common practice
The overlap between sections is closer to 3 - 3.5 inches. Tom N4KG ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet
I have dozens of 3/16 inch grips attached to the smaller (1+ X 2+) insulators, ALL wrapped from the first marker. NO problem. Tom N4KG On Sat, 21 Sep 2002 08:32:34 -0400 "Mike Gilmer, N2MG" <n2mg@eha
I think it would be useful and beneficial for writers to: CHANGE the SUBJECT LINE to reflect the CONTENT of the MESSAGE BOX Tom N4KG ________________________________________________________________ G