ATTENUATION beyond standard, unexpected impedance transformation or open circuit. All measurable with a 259B. When water gets in, it will go south very fast. 73. one
Just make sure that no one is confused that this rough equivalence of a freshwater takeoff to what I would term halfway decent dirt is NOT to be confused or ranked ANYWHERE NEAR the spectacular low a
Hi Mel, If you have modeled a Cal-Av, you should be able to model the basic form of an F12 N element, with the linear loading folding outward, etc. Since you've done the one model, you've already cro
A tornado is trees being ripped UP. It breaks at the point accumulating most aerodynamic drag and least able to support the weight of the root ball. it's full fallen of one Towers
Hi Jamie, Note that the Mag 340/620 precedes the introduction of the "N" elements. I would guess this antenna has the old design, using support wires to the center of the element as the linear loadin
I agree with this assessment if you want rear exit with knob on front. The B&W model 590 and 590 G (grounding model) also fit this description, but with 5 positions. I have a 590 G They do come up on
THREE sources of loss in a vertical system. 1) loss in the current sink, solved with elevated radials or a dense radial system. 2) E-plane penetration of the ground and resultant lossy current immedi
Let's call that spectacularly reduced attenuation at low angles. If you haven't heard it come in driving up to and onto a saltwater beach with a mobile HF rig/whip, you've missed one of life's great
Another point. There is a bit of a double standard in being picky about that gain really being elimination of attenuation. Say you have a trap beam with a lossy trap that measures 3 dbd gain, and you
See below. 73, Guy. mechanism Where back into make the It is not necessary for elements in an RF system to be literally interconnected by wires. If it were, transformers would not work. Yagi's would
This is a forward of a commercially related inquiry, but as it is for defense in a time of hostilities, and is not a classified inquiry, I thought I would pass it on. I seem to recall part numbers th
In the noise 1.7 can make a signal copiable. It may not make much of a difference in a given pileup. And a lot of people cannot discern even a 3 db difference, HOWEVER... Over the course of a contest
Egads... I have 1 1/4 up my Trylon. It took three guys on the ground to pull it up slow and easy, keep from whipping it around and throwing a kink, and keeping it up there while I got enough clamps o
Suggest that you get on force12talk@qth.com, subscribe if you need to and pose the question. Natan reads the reflector and often answers these kinds of questions. When you have feedlines attached to
Construct the boom's feedline with the inversions, etc and use a single source. Only way you actually will model the REAL performance closely. Multiple sources allows you to specify levels and phasin
Verticals on 160 are notoriously rotten as receiving antennas due to all the crud they hear, even if it has been shaped up as a top flight transmitting antenna. Beverages to listen with! No room, try
If you have a "random wire from a high structure, I would suggest a popular antenna from the 60's: Cut it to 133' and insulate the rest. Depending on the convenience, break the 133' 49 feet from eith
I dunno if that was a illustration of his age. It certainly was an illustration of his commitment to safe climbing. All it takes up there is a moment of inattention when you're not fastened on, and y
After seeing many monster antennas and helping construct some, it is quite clear that a lot of the success enjoyed by mini-watt transmitters using noodle-class antennas is due to a superb station mak