multi contact

multi contact

Antennas : Loop

• A multiband indoor loop antenna - An indoor antenna that works form 20 to 10 meters bands. A transmitting loop antenna that could be used for casual contacts and local rag chews by KH6JRM
  [ Hits: 1065 | Votes: 3 | Rating: 2 ]

• Moxon Mania - Building the Ultimate 4-Band Moxon Antenna - The article details the design and construction of a four-band Moxon beam by a radio amateur. The beam, mounted atop a rooftop tower, aimed for gain over a dipole on 20 meters, cost under $500, and included additional bands. The design features fiberglass spreaders, four bands (20/15/10/6 meters), and a single feedpoint. The construction involved computer modeling, NEC source code, and specific dimensions. The article outlines the assembly, materials, and tuning process, including in-situ adjustments for optimal performance. Despite initial challenges, the beam improved signal strength and facilitated contacts on multiple bands, marking it as the best HF antenna the author has owned.
  [ Hits: 96 | Votes: 0 | Rating: 0 ]

• Portable Half-Square Antenna: - The author explores a portable version of the half-square antenna, typically a single-band structure. Using a 9:1 unun for versatility, they describe construction with speaker wire, deployment using collapsible poles, and field tests, achieving successful contacts on multiple bands. The article suggests efficient matching methods and concludes with the antenna's integration into the author's portable options.
  [ Hits: 126 | Votes: 0 | Rating: 0 ]

• Antenna for deed restricted lots  ^pop - An effective 10-20m DX antenna for deed restricted lots. The article by K7ZB introduces a simple 10-20m DX antenna suitable for deed-restricted lots. The antenna, a 15' vertical design, facilitated contacts with over 200 countries worldwide. Its design employs a telescopic aluminum tube and radial wires for multi-band operation, requiring an external antenna tuner for optimal performance. The mounting scheme and construction details ensure effectiveness and ease of use.
  [ Hits: 56295 | Votes: 13 | Rating: 6.46 ]

• W3DZZ - a classic dipole heavily modified, - An easy to build multiband trapped dipole that can work well on short low bands for skip contacts
  [ Hits: 2330 | Votes: 9 | Rating: 7.56 ]

• Texso Instruments - Distributor of test and measurement and calibration instruments and provider of NIST traceable ISO/IEC 17025 accredited calibration services. Texso sells insulated tools, multimeters, insulation testers, and much more.
  [ Hits: 313 | Votes: 0 | Rating: 0 ]

• Contact-Multi - Contact-Multi is a Freeware Multi Digital program for Windows (PSK, RTTY,FSK and MFSK). It provides a DXCluster, Diplomes,LogBook,Qsl's Print, statistics Shareware version available. English and Spanish version
  [ Hits: 1840 | Votes: 0 | Rating: 0 ]