Radio Direction Finding

Radio Direction Finding projects

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Home : Technical Reference : Radio Direction Finding

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  • 2 Meter RDF system - A portable 2 meter radio direction finding system by W9XL
    [ Hits: 249 | Votes: 1 | Rating: 1.00 ]
  • 2M Programmable Fox-Or Transmitter - The 2 metre fox-or transmitter is a small low power transmitter which mounts in a small plasic pipe and runs off two AA batteries. The board measures just 12mm by 70mm.
    [ Hits: 879 | Votes: 1 | Rating: 1.00 ]
  • 80m fox hunting receiver - Schematic anc PCB for a fox hunting receiver for 80 meters band
    [ Hits: 972 | Votes: 1 | Rating: 7.00 ]
  • Active Attenuator - This active attenuator works as a simple mixer. A signal from a 1 MHz oscillator is mixed with the received signal in a 1N914 diode.
    [ Hits: 136 | Votes: 1 | Rating: 6.00 ]
  • Adjustable Attenuator - A simple adjustable passive attenuator by WB2HOL
    [ Hits: 143 | Votes: 0 | Rating: 0.00 ]
  • ARDF transmitter for 80 meters - The 80m TX described here is the well known ON7YD ATX-80 and timer, combined and re-engineered to fit a readily available enclosure by G3ZOI
    [ Hits: 838 | Votes: 1 | Rating: 9.00 ]
  • ARDF80 Receiver - Documentation to build your onw 80m ARDF receiver
    [ Hits: 909 | Votes: 1 | Rating: 8.00 ]
  • Fox Box - Transmitter controller - This FOX-BOX is based on a single CMOS 555 timer and uses an ISD1000 chip to store the transmit ID.
    [ Hits: 104 | Votes: 0 | Rating: 0.00 ]
  • Fox Buster 1 - A Fox transmitter project with picture and schematic by W9XL
    [ Hits: 134 | Votes: 0 | Rating: 0.00 ]
  • K9VCN Fox Buster - Schematic and drawings of a Radio Direction Finding trasmitter
    [ Hits: 146 | Votes: 0 | Rating: 0.00 ]
  • Montreal Fox Controller - Fox Controller, designed by VE2JX and VE2EMM includes schematic diagram to build the transmitter.
    [ Hits: 136 | Votes: 0 | Rating: 0.00 ]
  • RDF Yagi with Tape Measure elements - This antenna is an adaptation of the RDF2 two element, close spaced Yagi antenna described in the May, 1996 issue of 73 Amateur Radio Today Magazine.
    [ Hits: 195 | Votes: 0 | Rating: 0.00 ]
  • The Fox - 40mw transmitter - This RDF two transistor 144 MHz transmitter uses a 48 MHz scanner crystal as an oscillator / tripler. A second transistor boosts the power output to 40 milliwatts.
    [ Hits: 218 | Votes: 0 | Rating: 0.00 ]
  • The Fox - 750 mw transmitter - This RDF three transistor 144 MHz transmitter uses a 48 MHz scanner crystal as an oscillator / tripler. A second transistor boosts the signal to 40 milliwatts, a third amplifies the power output to 750 milliwatts. Includes schematic and pictures.
    [ Hits: 195 | Votes: 2 | Rating: 5.50 ]
  • The Fox - a 250mw transmitter - This FOX transmitter is equipped with a timer. It can be set to start transmitting up to 24 hours later by Joe Leggio WB2HOL
    [ Hits: 184 | Votes: 1 | Rating: 1.00 ]
  • The HANDI-Finder - This Radio Direction Finder Device Connects to an FM Receiver, Transceiver, or HT
    [ Hits: 407 | Votes: 1 | Rating: 10.00 ]
  • The Microsniffer Project - The Microsniffer is a fully autoranging VHF or UHF sniffer which has been designed for those who are foxhunting on a budget.
    [ Hits: 488 | Votes: 0 | Rating: 0.00 ]
  • The Montreal Fox V3 - A Fox transmitter by VE2EMM with construction details part list and schematic diagram
    [ Hits: 143 | Votes: 0 | Rating: 0.00 ]
  • VK3YNG 80m ARDF Foxhunt sniffer kit - Details of the vk3yng 80m ardf foxhunt sniffer
    [ Hits: 977 | Votes: 5 | Rating: 4.60 ]
  • WB2HOL Foxhunting beam - Building the WB2HOL foxhunting beam antenna
    [ Hits: 867 | Votes: 1 | Rating: 3.00 ]
  • WB6BYU Tape Measure Yagi - A tape measure yagi antenna for 145.000 MHz suitable for ARDF
    [ Hits: 1301 | Votes: 2 | Rating: 5.50 ]
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