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Query: oregon
Links: 26 | Categories: 1
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Demonstrates the construction and on-air performance of the _NB6Zep_ antenna, a modified 20-meter Extended Double Zepp design optimized for multi-band operation from 40 through 10 meters. The resource covers basic design principles, including dimensions of 66 feet horizontal and 5 feet vertical elements, and specifies open ladder line or TV twin lead for the transmission line. It details material selection for low-cost wire antenna construction, such as 18 AWG wire for the legs and ceramic or plastic insulators, along with practical tips for soldering connections and insulating against moisture. The author, NB6Z, shares insights from extensive _EZNEC_ modeling to optimize the antenna's total length for a 40-meter half-wave dipole footprint and feed line length for direct tuner connection. The article presents field results, including successful _PSK31_ contacts from Oregon to the East Coast on 40 and 30 meters with 50 watts, even at a low height of 6 feet. It provides detailed performance characteristics for each band, noting the _NB6Zep_'s highest gain (over 3 dB) and sharp, medium-angle lobes on 20 meters, which yielded strong DX reports to locations like Korea, Japan, and Argentina. For 17 and 15 meters, it describes a butterfly-like pattern with broad lobes, while 12 and 10 meters exhibit narrow, directional lobes in an "X" configuration. The author also shares personal experiences operating successfully for over a decade in an antenna-restricted environment using the NB6Zep and other stealth wire antennas.
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ARS repairs all major brands of Amateur Radio equipment (Icom, Kenwood, Yaesu, Alinco, etc.) in our Portland Oregon area service facility
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One of the Portland ,Oregon metro area's oldest club, all are welcome, if you are in the area, our club repeater is on 146.840 mhz
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Radio club serving ham operators in Southwestern Idaho and Eastern Oregon.
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Special services club offering monthly meetings, training classes and general advancement of ham radio in the Northwest.
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Amateur Radio operators, volunteers for Emergency Service, in Portland, Oregon, and other suburban cities and towns in Multnomah County
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The club was formed at a meeting of a group of hams on a May 1989 afternoon at Jake's Truck Stop in Bend.
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The NB6Zep Antenna, an electrically shortened 80-meter end-fed wire, addresses space constraints for low-band operation by integrating two loading coils into a 37-foot wire. This design, modeled with _EZNEC_, explores configurations like the quarter-wave sloper and inverted-L, with the latter providing a more vertical radiation pattern and practical backyard deployment. The resource details specific coil construction, recommending 21 uH coils made from _BW coil stock #3026_ or similar, and outlines wire segment lengths for optimal tuning. Performance analysis indicates a radiating efficiency of approximately 27% with good ground conductivity, resulting in a signal typically 3-4 dB down compared to a full-size quarter-wave vertical. The antenna exhibits a narrow bandwidth, around 50 kHz, due to its high Q, necessitating a tuner for broader band operation. Feedpoint impedance is low, with ground resistance playing a critical role in achieving a usable SWR. The article emphasizes the importance of an effective ground rod at the feedpoint for proper operation and tuning, suggesting an antenna analyzer for precise adjustments. It confirms the antenna's suitability for DX, citing successful contacts from Oregon to the East Coast and Hawaii on a 160-meter variant, making it a viable option for urban operators seeking low-angle radiation on 80 meters.
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The Western Oregon Radio Club operates Linked Amateur Radio repeaters in the Portland Oregon Area
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High desert amateur radio group, amateur radio operators who live on the Oregon high desert plain that extends from the Cascade Mountains east into Idaho and south to California.
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The NWAPRS is here to support APRS events, activities and amateur radio enthusiasts primarily in British Columbia, Alberta, Northwest Territories, Washington, Oregon, Idaho, and Montana
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Providing amateur radio 144 MHz & 440 MHz repeaters in the state of Oregon
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Dedicated to the Preservation and Enjoyment of Vintage Radio and Wireless Equipment Serving the greater Portland, Oregon area
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Multi-op contest station of Joe Rudi, NK7U of Baker City, Oregon, USA
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Listen to online police scanner from Douglas County in Oregon USA
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Hoodview Amateur Radio Club Gresham, Oregon
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A portable (15.5 foot diameter) NVIS loop for 3.5 to 7.3 MHz. Performs well at high and low takeoff angles, and has smaller footprint than most NVIS antennas.
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Valley Radio Club Oregon USA
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The CNCG is a group of contesters and DXers from Oregon and Washington who travel to various locales to participate in amateur contests
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Focused on technology to serve emergency response in clackamas county, oregon.
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Affiliated with the American Radio Relay League in the Oregon Section of the Northwestern Division
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Most members of GRRAA reside in Union County and Wallowa County Oregon, however we welcome any and all that have an interest in amateur radio.
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The Valley Radio Club of Oregon (formerly Valley Radio Club of Eugene), located in Eugene, Oregon, was chartered in 1929, and is one of the oldest continuously operated club stations in the United States. It has been affiliated with the American Radio Relay League (ARRL) since 1932, and associated with the American Red Cross since 1951.