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Counterpoise, in electronics, portion of an antenna system that is composed of wires or other types of conductor arranged in a circular pattern at the base of the antenna at a certain distance above ground. Insulated from the ground, it forms the lower system of antenna conductors. It is used in
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No counterpoise or radials required. REALLY! But they can help. Because of the load coil design which uses the coax or metal mounting pole as a counterpoise, you do not need ground radials or counterpoise wires with the CHA250B. It works quite well without them. I can tell you this from my experience. No counterpoise or radials required. REALLY! But they can help. Because of the load coil design which uses the coax or metal mounting pole as a counterpoise, you do not need ground radials or counterpoise wires with the CHA250B. It works quite well without them. I can tell you this from my experience.
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My radials were installed laying on the ground in the fall when I mowed my grass extremely short. I used my own homemade yard staples. I purchased about 40 feet of #14 galvanized wire from the local hardware store. I then proceed to cut them in 8 inch lengths and just bent them in half. Made quite a few.
"Counterpoise" has been used by radio amateurs since the very beginning of our hobby. When operators couldn't get a good earth ground, perhaps because they were on the second floor of a...
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FCP, Folded Counterpoise, Inverted L, Fix RF Loss. Home FCP+ Only One dB? Who cares? You Do! You, Loud as K2AV? K2AV Contest Scores The Loss List Your Shrinking RF Issues and Fixes A Brief Technical
Title: Microsoft Word - HF_Antenna_Analysis.doc Author: Administrator Created Date: 3/6/2010 10:04:03 AM
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layouts, main and branch conductor routing, down conductor location, ground electrode and inspection pit locations, counterpoise routing and all bodies of conductance and inductance connected to the system. 3. Additional information as required in Section 26 00 01, “Electrical General Provisions”. 1.6 PRODUCT DELIVERY, STORAGE, AND HANDLING:
In No Ground Plane systems, the coax shield is used for counterpoise (substitute for the ground connection). No Ground Plane (NGP) CB Antenna. A no ground plane CB Antenna is a CB antenna that doesn't require a ground plane (large metal surface under it) to operate. Ground Plane antennas are specially designed to work on fiberglass vehicles and ...
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This will require floating the coupler above RF ground, and decoupling its RF feedline and power/control cables using RF chokes. When a Π/L coupler feeds an asymmetrical random-length antenna, it is imperative that the coupler’s “cold” (RF ground) terminal be connected to a good ground or counterpoise system.
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GROUNDING vs GROUNDED: There are four main functions accomplished (on a boat) through 4. Counterpoise - provide an RF gnd, or zero reference for electronbics. None of these (4) GroundING...If you don’t have a backstay, then a 20+ foot marine whip antenna will work fine, again with an automatic tuner and a great ground on the antenna tuner. The GAM antenna and KISS-SSB counterpoise are very convenient and do work, but using either or both of them will increase the amount of RF radiation inside your boat.
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The “Counterpoise” is a short, typically one twentieth (0.05 * λ) of the wavelength. From experience, I found that with this tuner my SWR was better by simply disconnecting the counterpoise at lower bands. called a counterpoise system, especially if it is elevated off the ground) should extend at least a half wavelength in every direction from the antenna . The feed-point resistance of a quarte r-wave long, thin vertical radiator over such a ground screen will approach the theoretical value of 36 Ω.
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Tail (counterpoise) is a required part ... especially if coax-to-ground path becomes resonant (dominant effect
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