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66 links about power mod on dxzone.com

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Antennas : EH
  • EH antenna power lost considerations - Out of Balance Current or Longitudinal Mode Current in the Coaxial Cable causes radiation from the coax. But how large a proportion of the total power is radiated or lost from this Current?
    [ Hits: 1166 | Votes: 1 | Rating: 4.00 ]
Internet and Radio : Sounds
  • D-Star presentation and sounds - A powerpoint presentation of the D-STAR operating mode by K7VE includes d-star sound samples
    [ Hits: 1819 | Votes: 5 | Rating: 2.40 ]
Manufacturers : Alternative Power : Solar Panels
  • Solarworld - The sun powered company, based in Germany produce solar modules, solar cells and solar panels.
    [ Hits: 466 | Votes: 0 | Rating: 0.00 ]
Manufacturers : Microwave
  • Low Power Radio Modules - Low power radio modules - supplying rf modules, rf transceivers, radiometrix transmitters receivers, low power radio modules, scada, frequency hopping, 900 mhz, wireless data transmission, data telemetry, gps modules & receivers and more
    [ Hits: 576 | Votes: 0 | Rating: 0.00 ]
Manufacturers : Test Equipment : Power Meter
  • Telewave - Telewave's innovative engineering produces the industry's toughest antenna systems. Yagi, Fiberglass Collinear, and Dipole models are available from 66-2500 MHz. Wattmeters, test equipment,rf power meters, duplexers, filters and cavities, transmitters combiners
    [ Hits: 1624 | Votes: 0 | Rating: 0.00 ]
Manufacturers : Wattmeters
  • Autek Research - Autek Research make three models of RF Analysts, power and swr meters
    [ Hits: 3672 | Votes: 14 | Rating: 7.07 ]
Operating Aids : Beginner's Guides
  • About digital modes - The digital modes provide a wonderful opportunity for those of us who would like to work on the HF bands but find CW too difficult and SSB phone prohibitive because of interference problems. The digital modes are easy to set up and get operating, require low power and a narrow band.
    [ Hits: 6803 | Votes: 6 | Rating: 8.00 ]
Operating Modes : Hellschreiber
  • Hellschreiber beacon project - This web site describes a low power beacon system to be used for propagation and performance tests on the lower bands. The beacon offers CW (on-off keyed) modes and FSK modes; the traditional Morse ID mode, and Feld-Hell, another highly noise immune CW mode.
    [ Hits: 1439 | Votes: 6 | Rating: 9.83 ]
Radio Equipment : HF Transceivers : Yaesu FT-817
  • Yaesu FT-817 discussion group - Members discuss the operation of and modifications to this outstanding QRP rig that covers 160m 70cm with all modes. Site contains a large database of FT-817 FAQs and data files. Antennas, tuners, and power sources are also covered as related to this ultra-compact transceiver.
    [ Hits: 11661 | Votes: 92 | Rating: 6.91 ]
  • The KA7OEI FT-817 pages - FT-817 Radio Modifications, Improving the FT-817 Noise Blanker, increasing output power, using rechargeable cells, epanding frequency range
    [ Hits: 801 | Votes: 0 | Rating: 0.00 ]
Radio Equipment : HF Transceivers : Yaesu FT-897
  • FT-897 mods - FC-30 Fan modification, Mars/Cap mod for Yaesu FT-897, DRM modification for Yaesu FT-897, FT-897 mod for SGC-230 DC power
    [ Hits: 5004 | Votes: 8 | Rating: 3.63 ]
Shopping and Services : Kits and Components
  • Fox Delta Amateur Radio Projects & Kits by VU2FD - Amateur Radio Projects & Kits for homebrewers, includes DDS,sound card interface,programmers, hamcom, frequency counter, RF Power Meter, modems and more.
    [ Hits: 976 | Votes: 4 | Rating: 10.00 ]
Software : Antenna analysis
  • ERP Calculator Plus - ERP Calculator is an Amateur Radio software utility designed to perform a side-by-side comparison of two Ham Radio antenna systems. ERP Calculator comes pre-programmed with data files including published data for several popular brands and types of coax cable as well as several popular antenna system brands and models. ERP Calculator displays values of ERP, Antenna Power Gain, Antenna Feed point Power, Antenna System Gain in dB, Antenna Gain in dBd, SWR Attenuation in dB, SWR Power Attenuation, Coax Loss in dB, and Coax Power Loss
    [ Hits: 2558 | Votes: 9 | Rating: 5.11 ]
  • Nec2Go - Powerful antenna modeling tool using NEC 2 computing engine. Nec2 specifically provide users, either those experienced with the Nec2 processes, or for those who are neophytes but want to model their own antennas. Nec2Go uses a simplified process for defining the antenna structure and then providing view of the structure, plots (2D and 3D) and other significant data that is pertinent to the design. This simplified process uses an edit file with equations for all definitions.
    [ Hits: 1636 | Votes: 1 | Rating: 5.00 ]
  • TLDetails - Transmission Line Details. This utility program shows the impedance and SWR at both ends of a transmission line and the details of power loss in the line. It includes characteristics for over 40 built-in line types. You can modify these values to see how small changes affect the results or to specify custom lines. All program inputs may be changed directly or you can use spin buttons to make the changes. If you are using a moderately fast computer you can hold down a spinner and "watch the movie" on the charts as the results are recomputed. By AC6LA
    [ Hits: 848 | Votes: 4 | Rating: 9.25 ]
Software : Logging
  • M*Log - Features contest mode and powerful configuration & reporting options. Commercial
    [ Hits: 1208 | Votes: 0 | Rating: 0.00 ]
  • CQ Log - CQLog is a powerful logging program for Windows. It provides a comprehensive control centre for everyday on-the-air activities, including: full-featured logging of QSOs; statistics for many awards (for LoTW and eQSL capability); support for QRZ, RAC, GOLIST databases. You can save up to 3 pictures for each SSTV-QSO. Two-way data exchange with MixW2, and DigiPan. Integrates with DX Atlas. Real-time upload of QSOs to eQSL.cc. The program also offers a "contest-mode"; supports CAT systems for YAESU, ICOM, KENWOOD, Ten-Tec. Prints QSL cards, and QSL labels, addresses envelopes.
    [ Hits: 11418 | Votes: 127 | Rating: 7.73 ]
  • Turbolog - TurboLog is a station management and logging program for the discerning radio amateur / hamradio operator. Besides powerful database and logging functions there is a fully integrated support for the control of typical radio station equipment, e.g. Transceivers, Packet radio, Morse and voice keyer, Digital modes terminal, Antenna switching, Acoustic alerting, and more
    [ Hits: 988 | Votes: 2 | Rating: 4.00 ]
Software : PalmOS
  • ptelnet - ptelnet is a powerful communication software for the Palm Computing platform, By using the built-in TCP/IP stack (telnet mode), it acts as a Telnet Client. By accessing the serial (RS232 or IR) port directly (serial mode), it acts as a standard Terminal Emulator. Freeware
    [ Hits: 1285 | Votes: 0 | Rating: 0.00 ]
Technical Reference : Amplifiers : HF Amplifiers
  • Ameritron AL-80A modification - W7TDC modification of the Ameritron AL-80A power amplifier
    [ Hits: 9644 | Votes: 17 | Rating: 7.06 ]
  • A LF power amplifier - A Low Frequency (LF) RF Power Amplifier by VK5BR it operates in a linear mode and can handle CW, AM and SSB.
    [ Hits: 2797 | Votes: 1 | Rating: 1.00 ]
Technical Reference : Amplifiers : RF Amplifiers Theory
  • A.M. tutorial - This tutorial is designed to help explain some of the concepts involved in RF power measurement for amplitute modulated signals.
    [ Hits: 3386 | Votes: 4 | Rating: 6.00 ]
Technical Reference : Dummy Loads
  • A low cost dummy load - This article describes a low-cost, low-to-moderate power dummy load, which presents a 50-Ohm resistive load from HF through 440MHz.
    [ Hits: 6091 | Votes: 5 | Rating: 5.40 ]
Technical Reference : Grounding
  • Lightning Safety & Power Quality Issues - LightningProtection: Lightning Safety & Power Quality Issues. A moderated professional forum by recognized experts, for accurate technical information on lightning, surge and grounding information.
    [ Hits: 614 | Votes: 2 | Rating: 10.00 ]
Technical Reference : HF Radios
  • Sierra mods - This is a collection of emails collected over time which indicate how to put some mods into your Sierra transceiver. Most of the mods have to do with improving the power output.
    [ Hits: 525 | Votes: 1 | Rating: 10.00 ]
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