active antennas

active antennas

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• PA0RDT Active Antenna - Active antennas can be very useful, in particular they can help reduce local electrical noise by allowing the antenna to be installed in a corner of the garden well away from house wiring. The original PA0RDT antenna uses a very small patch for the antenna and relies on the antenna being installed quite high.
  [ Hits: 309 | Votes: 0 | Rating: 0 ]
• E-field Probe Antenna - A small active voltage probe antenna to aid reception on the LF bands
  [ Hits: 143 | Votes: 0 | Rating: 0 ]

• Active receiving antennas - An active antenna is sometimes used for receiving purposes in instances where a normal antenna would be impossible to accommodate in a physical sense.
  [ Hits: 12627 | Votes: 6 | Rating: 5.5 ]
• Another Approach to Active Antennas - Active antenna with a frequency response that is flat from 5kHz to over 30MHz
  [ Hits: 4431 | Votes: 1 | Rating: 6 ]

• Mini Whip Antenna - An Active antenna designed for VLF and shortwave radio reception. A small antenna capable of excellent performances on low bands, made on a copper plate and introductio to active antennas.
  [ Hits: 2286 | Votes: 2 | Rating: 6.5 ]
• Active 3-30 MHz Hula-Loop Antenna for Shortwave - This active antenna for the shortwave band provides surprising performance, even indoors. As the name implies, the main loop is made from a Hula-Hoop with the metallic paint stripped off and a single turn of 14AWG copper wire inserted inside the hoop.
  [ Hits: 158 | Votes: 1 | Rating: 10 ]

• VSWR Reactive Power - Many antennas and antenna designers neglect the true cause of loss. The major problem using short antennas is the reactance, not the length
  [ Hits: 225 | Votes: 1 | Rating: 6 ]
• Phasing of two identical antennas - Phased Spaced Active Whips and Broadband Loops by WA1ION
  [ Hits: 401 | Votes: 1 | Rating: 2 ]

• IAT Interactive Antenna Table - IAT is an excel sheet table evaluate parameters of VHF UHF antennas edited by Vladimir UR5EAZ. The difference between this tool and the existing VE7BQH Antenna Table is the use of G / T and C / N instead of the G / Ta parameter. In this table, Vladimir applies the ITU recommendations to assess the noise properties of a radio receiving system and shows the advantage of the G / T concept over the G / Ta concept when choosing an antenna.
  [ Hits: 106 | Votes: 4 | Rating: 9.5 ]

• Tri-band Wire Yagi Antenna - A compact wire Tri-band Yagi for 10 15 20 meters with 2 active elements each band
  [ Hits: 782 | Votes: 2 | Rating: 4.5 ]

• Ham Census - What do amateur radio operators worldwide, think of their passion? What do we wish for? What are we frustrated about? How many of us are active, versus those that are taking a break? Do we have favorite radios, antennas, or even favorite cw paddles? Do we prefer one contest over another? The best way to find out is if we all participate in Ham Census. Join in and let all amateur radio operators know your thoughts "share your views" then you can find out what everyone else is thinking, in real time. Help shape the future of ham radio by participating in the world's most complete survey of amateur radio.
  [ Hits: 106 | Votes: 2 | Rating: 8 ]

• Broadband Power Technology - Active Receiving Antennas, designed for reception of shortwave, mediumwave and longwave signals and VHF/UHF signals
  [ Hits: 337 | Votes: 0 | Rating: 0 ]
• Active Antenna Amplifier - Manufacturer of amplifier for small magnetic and electric receiving wideband antennas, and variable delay line kit for active antenna phased arrays
  [ Hits: 279 | Votes: 0 | Rating: 0 ]

• Tecom - Tecom industries product line encompasses a wide range of highly sensitive active and passive antennas for use in airborne and ground applications, providing complete coverage of the 20 MHz to 40 GHz frequency range.
  [ Hits: 355 | Votes: 0 | Rating: 0 ]

• Wellbrook Communications - Broadband active loop antennas for radio amateurs and hobbyists
  [ Hits: 4153 | Votes: 5 | Rating: 5.2 ]

• An Introduction to 24 GHz - Article provides a guide on how to use 24 GHz band and what to expect, including Active modes, equipment, propagation and antennas for this band in by VE3SMA
  [ Hits: 529 | Votes: 1 | Rating: 8 ]

• FT-100D Active Antenna Interface - Yaesu FT-100D Active Interface for the Codan 9350 and Comet SB-15 Antennas
  [ Hits: 488 | Votes: 1 | Rating: 5 ]

• Transverters-Store - Transverters-Store is a online shop for low cost transverter boards, but also QRP transceivers, Active antennas, RF bridge and probes, Mic equalizers and other amateur radio accessories
  [ Hits: 694 | Votes: 3 | Rating: 5.67 ]

• QRM and noise reduction - 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: 5086 | Votes: 6 | Rating: 7 ]

• RTL SDR with Active Antennas for HF - Experiences with software defined radios SDR and active antennas using the RTL SDR dongle and Spyverter HF up-converter
  [ Hits: 181 | Votes: 2 | Rating: 10 ]

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