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Search Results for "design"

890 links - and 5 categories

Antennas : 10M
  • Cubic Quad  pop - The cubic quad is a very popular way to get reasonably high gain and excellent front to back ratios as well as low angles of radiation for without going to extreme heights. Includes design for 2 6 10 12 15 meter bands
    [ Hits: 64397 | Votes: 49 | Rating: 4.72 ]
Antennas : Beverage
  • WW2Y/K2WI Beverage design - Ideas for enhanced beverage antenna performance, Single wire beverage improvements and arrays of two beverages
    [ Hits: 3636 | Votes: 3 | Rating: 9.33 ]
Antennas : Homebrewing Techniques
  • Yagi Element Mounting Considerations - One of the most important considerations when designing and building a Yagi antenna is the method used to attach the elements to a boom. This is true because the boom influences the electrical length of the elements. In this article JH Reisert explain with drawings techniques on mounting yagi antenna elements to a boom
    [ Hits: 3851 | Votes: 0 | Rating: 0.00 ]
Antennas : Longwave
  • Antennas for 136kHz - A very long and exaustive documentation on building antennas for 136 khz. Includes links to antenna design software for longwave
    [ Hits: 4256 | Votes: 4 | Rating: 8.00 ]
Antennas : Quad
  • Pfeiffer Quads - The Pfeiffer Quad was described in QST and has the desirable feature that it is smaller than a standard cubic quad but does not compromise performance very much. The Pfeiffer design is rather difficult to construct because of the complicated linear loading networks required.
    [ Hits: 2783 | Votes: 2 | Rating: 5.50 ]
Antennas : VHF UHF
  • VHF/UHF Yagi Antenna Design  pop - Design your vhf yagi antenna online, a JavaScript enhanced web page that implements the design of an antenna in the VHF, UHF by K7MEM
    [ Hits: 137513 | Votes: 920 | Rating: 5.91 ]
Antennas : Vertical
  • New HF antenna HB9ABX - A new, revolutionary design allows the construction of small HF antennas, which provide the same efficiency as large antennas. This antenna can be built for all HF bands, from 10 to 80 m.
    [ Hits: 20850 | Votes: 32 | Rating: 9.10 ]
Contesting : Stations
  • DF3CB BV QSL Management and printing - DF3CB site, contesting, and software BV is a professional freeware software for the QSL Management and Label/QSL Printing under Windows developed and distributed by Bernd Koch, DF3CB, since 1989. It is mainly designed for the contester and QSL manager with high QSL quantities but useful for all other QSL'ing purposes as well. Includes logging features
    [ Hits: 1799 | Votes: 4 | Rating: 6.00 ]
Manufacturers : Accessories
  • CW Buffer, Amplifier & Preamp Sequencer - The AMPSEQUENCER board is an advanced microprocessor driven control board specifically designed to buffer CW key signals while switching the amplifier to transmission, it can also be used to provide proper TX delay timing for RTTY and Pre-Amplifier proper sequencing
    [ Hits: 1060 | Votes: 0 | Rating: 0.00 ]
Operating Aids : Radio Spectrum
  • The ElectroMagnetic spectrum - Excellent poster representing the electromagnetic spectrum from 31.2 mHz to 6.52 EHz, PDF file poster designed by Anthony Tekatch
    [ Hits: 1960 | Votes: 5 | Rating: 6.00 ]
Operating Modes : Amateur Television
  • Fax480 - FAX480 was developed to provide for relatively high resolution image transmission on HF, VHF, and UHF amateur radio bands. FAX480 was designed to bridge the gap between conventional slow scan television (SSTV) and conventional facsimile techniques.
    [ Hits: 488 | Votes: 1 | Rating: 6.00 ]
Publications : Trainings
  • Space Weather Education - Special space weather course designed to teach individuals without any background how to predict space weather
    [ Hits: 491 | Votes: 0 | Rating: 0.00 ]
Radio Equipment : HF Transceivers : Kenwood TS-950SDX
  • Kenwood TS-950S RF gain mod - The Kenwood TS-950S and TS-950SD HF transceivers are fine radios. However, many, if not all, of them were produced with a design flaw which allows the RG GAIN control to cease function in the presence of a strong signal IF the AGC has been turned OFF
    [ Hits: 1259 | Votes: 1 | Rating: 1.00 ]
Shopping and Services : QSL Printing
  • QSL Canada - Very high quality QSLs with prices that fit any budget. Large selection of cards style, free design.
    [ Hits: 853 | Votes: 6 | Rating: 6.00 ]
Software : ACARS
  • JACARS - Tthe ultimate program designed to connect you to ACARS systems around the world via the Internet
    [ Hits: 14301 | Votes: 146 | Rating: 5.03 ]
Software : Logging
  • OH1AA Logging program - The OH1AA logging program package is designed to handle the book-keeping of amateur radio contacts. The package contains three separate main prog- rams by which contacts are managed. Run under DOS and is freeware
    [ Hits: 976 | Votes: 19 | Rating: 5.05 ]
Software : Packet
  • Packet Terminal Interface - Simple Windows based TNC interface program Designed for ARES operation, simple operator interface to connect and perform communication functions, control operator programs screens before operations Both receive and transmit screens Simple Windows based TNC interface program Designed for ARES operation Simple operator interface to connect and perform communication functions Control operator programs screens before operations Both receive and transmit screens
    [ Hits: 6069 | Votes: 10 | Rating: 4.50 ]
Software : Pocket PC
  • pTrack - pTrack is a satellite tracking program for the Windows CE / Pocket PC palmtop computer. It was designed with simplicity in mind and does not support all the features found in larger satellite tracking packages.
    [ Hits: 3596 | Votes: 4 | Rating: 4.50 ]
Software : Radio Control
  • Shortwave Log (SWLog) - Shortwave Log, SWLog is a comprehensive logging and radio control program. While designed for shortwave and mediumwave listening, the program is quite adept when listening to longwave, utility, or amateur radio. Support Icom Drake TenTec Yaesu JRC and lowe receivers.
    [ Hits: 4904 | Votes: 22 | Rating: 6.15 ]
Software : Satellite tracking
  • Satbuster - SATBUSTER for Windows is especially designed for satellite visual observers and trackers. Its users, mainly amateur astronomers and radio amateurs, appreciate both the accuracy and the simple to use graphical interface.The software is aimed to hobbysts. However a growing number of plain folks are starting to use this tool to recognize and look at the International Space Station and the Space Shuttle during its missions too
    [ Hits: 2069 | Votes: 2 | Rating: 4.00 ]
Technical Reference : HF Radios
  • Yahoo! Groups : TS-850S - Welcome to TS-850S HF Transceiver Owners Group. Group designed to discuss the attributes, usage and technical information sharing, concerning this Classic Transceiver. Please feel welcome to add your questions, information and comments. We hope you enjoy the Amateur Operators "Attribute of helping ones fellow operator". Valid AmateurCallsigns only, admitted.
    [ Hits: 925 | Votes: 3 | Rating: 8.67 ]
Technical Reference : Lightning Protection
  • Station Lightning Protection - This website outlays the basic knowledge, safe design and installed equipment that are employed in the lightning protection system of a US Coast Guard Auxiliary Radio Facility. This should also be relevant to the Civil Air Patrol, MARS, and Amateur Radio stations who provide emergency communications capability for public safety or the military
    [ Hits: 2203 | Votes: 4 | Rating: 5.50 ]
Technical Reference : QRP Projects : QRP CW Transceiver
  • A 80/40m DDS controlled QRP CW transmitter - JUMA-TX1 is a 5W CW transmitter for the 80/40m bands. Juha (OH2NLT) and Matti (OH7SV) have had high quality CW keying and a compact size as design goals for this project. No coils need to be wound to construct this transmitter!
    [ Hits: 4284 | Votes: 5 | Rating: 7.80 ]
Technical Reference : Radio Frequency Interference : Noise Reduction
  • QRM and noise reduction Priority listing - You will find on these pages my experiences and results on antennas and local/non-local QRM/noise reduction. Using a broadband vertical active magnetic loop and a home made / designed broadband amplifier. Two vertical magnetic Alford loops are used in an array. Analog and Digital Signal Processing and a dual phase coherent Software Defined Radio (SDR) are used. By PA0SIM
    [ Hits: 4273 | Votes: 5 | Rating: 8.20 ]
Technical Reference : Receivers
  • A 80/40m Direct Conversion HF Receiver with DDS VFO - Juha (OH2NLT) and Matti (OH7SV) have designed JUMA-RX1, an award winning 80/40m direct conversion HF receiver with highly accurate direct digital synthesis VFO. The receiver is very compact, because it constructed using surface mount components. No coils need to be wound to construct this receiver!
    [ Hits: 5463 | Votes: 13 | Rating: 8.31 ]
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