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  • Build a Vox Circuit - by Mike Martell N1HFX
    [ Hits: 4736 | Votes: 22 | Rating: 5.19 ]
  • Build your hamcomm interface - This is the small easy to build interface that will allow you to receive most all the digital modes on you shortwave radio.
    [ Hits: 3035 | Votes: 92 | Rating: 5.99 ]
  • Build yourself an RF Ammeter - An Easy way to Monitor RF, AC or DC current with one instrument by W5JGV
    [ Hits: 3403 | Votes: 5 | Rating: 6.00 ]
  • Building Your Own AM Tuner - Hi-Fi AM Tuner and Amplifier
    [ Hits: 1440 | Votes: 1 | Rating: 1.00 ]
  • Change Battery on DVS-2 - The DVS-2 is a CQ unit for the Yaesu Trancievers.
    [ Hits: 430 | Votes: 0 | Rating: 0.00 ]
  • Constant Current Battery Charger - Constant Current Battery Charger circuit project
    [ Hits: 2414 | Votes: 6 | Rating: 4.00 ]
  • Crystal Radios at crystalradio.org.uk - Shortwave and broadcast band listening using crystal (passive) radio.
    [ Hits: 2558 | Votes: 1 | Rating: 5.00 ]
  • Crystal set radio - A short wave crystal set radio project
    [ Hits: 3964 | Votes: 55 | Rating: 7.95 ]
  • CW Command Post - Replace four separate accessories keyer, keyermemory, audio filter, and audio amplifier-- with one box containing allfour and providing for multiple inputs and outputs. N1FN CW CommandPost A not very original CW operating accessory "put together" by N1FN
    [ Hits: 1462 | Votes: 0 | Rating: 0.00 ]
  • CW Filter - I0QM Gaussian CW Filter page This Filter for the weak signals is the evolution of the simple Universal State filter, already published on "Radio Rivista", the 8/1993
    [ Hits: 1645 | Votes: 2 | Rating: 8.00 ]
  • DF9CY Technical Articles and Material - A collection of technical articles on antennas, radios and other stuff.
    [ Hits: 739 | Votes: 1 | Rating: 8.00 ]
  • Direct Conversion HF Transceiver with DDS LO - Direct conversion HF radio with DDS frequency synthesizer is very interesting concept. OH7SV and OH2NLT are experimenting with such rig. Full stories will become available when project matures. Here we have some preview pictures and material.
    [ Hits: 5143 | Votes: 11 | Rating: 8.37 ]
  • DirectDirt - The Information Source For Makers, Experimenters, DIY, Home Brewers, Restorers, and Amateur Radio Operators
    [ Hits: 327 | Votes: 4 | Rating: 10.00 ]
  • Display/Stabiliser unit - The Display/Stabiliser unit displays the signal frequency on a Hitachi LCD module.
    [ Hits: 767 | Votes: 1 | Rating: 10.00 ]
  • DL6JAN's CW keyboard - A micro processor interface that converts PC keyboard code into Morse code
    [ Hits: 2509 | Votes: 6 | Rating: 9.50 ]
  • Dual Output 200 MHz RF Generator/Detector - Dual Output DDS Based RF Generator/Detector with links for the associated QEX NimbleSig III article download by Tom, VA7TA
    [ Hits: 1044 | Votes: 1 | Rating: 8.00 ]
  • DVX Project - Digital Voice Transceiver Project This Project began to explore the use of the DVSI AMBE 2020 voice compression chip and also the ADF7021 single chip VHF RF Transceiver from Analog Devices.
    [ Hits: 1340 | Votes: 1 | Rating: 1.00 ]
  • Easy CW With Your PC - See, hear and send CW using a simple interface and your PC a 1985 QST article in PDF format by WB8DQT
    [ Hits: 513 | Votes: 1 | Rating: 10.00 ]
  • EI7BA's Amateur Radio Pages - Antennas and homebrew ancilliary equipment
    [ Hits: 2548 | Votes: 17 | Rating: 9.18 ]
  • EI9GQ  pop - Homebrew page with some great homebrew gear shown here.
    [ Hits: 24415 | Votes: 33 | Rating: 7.81 ]
  • Eprom Eraser - An Eprom Eraser with UV-Ray for 27Cxx Eprom (and similar, common in TNC) with a timer
    [ Hits: 1724 | Votes: 4 | Rating: 7.50 ]
  • ESR METER: (Equivalent Serie Resistance of capacitors) - Esr meter to measure the equivalent serie resistance of capacitors
    [ Hits: 5381 | Votes: 28 | Rating: 5.63 ]
  • F5AYE microwaves pages  updated - Pages on microwaves,homebrew, beacon HB9G 5.7 and 10 Ghz.
    [ Hits: 2339 | Votes: 4 | Rating: 6.25 ]
  • F5RDH homebrew projects - some interestig homebrew projects
    [ Hits: 14197 | Votes: 34 | Rating: 7.88 ]
  • F6BON Homebrew - Spectrum alalyzer, uhf shf test equipment
    [ Hits: 4495 | Votes: 9 | Rating: 8.00 ]
  • Ferrite information - Ferrite Toroidal Cores, Magnetic Properties of Ferrite Materials, EMI - RFI Suppression Design Considerations, Ferrite Beads, Ferrites for RFI Ferrite Cores for RFI Suppression by CWS ByteMark
    [ Hits: 13257 | Votes: 4 | Rating: 5.00 ]
  • Frequency Locked Loop VFO for HF - A device which joins in a single microprocessor a digital programmable frequency meter and a control logic capable to lock a manually tuned VFO to its actual frequency by IK3OIL
    [ Hits: 1560 | Votes: 4 | Rating: 7.75 ]
  • G3PTO  pop - Homebuilt Amateur Radio & CW communications web site
    [ Hits: 16682 | Votes: 12 | Rating: 7.60 ]
  • GW0VMR construction ideas  pop - selection of construction ideas from Patrick, GW0VMR, includes ATU, Baluns theory
    [ Hits: 21170 | Votes: 12 | Rating: 7.84 ]
  • HA8ET Technical & Homebrew pages  pop - Technical Articles, Homebrew,Test & Measurements, (Returnloss Bridge 1,8 MHz...1300 MHz, 2m/70cm DIPLEXER...) Vacum Tube Databases, VHF-UHF-SHF Power amplifiers,HAM links, electronics links
    [ Hits: 17269 | Votes: 97 | Rating: 8.62 ]
  • Ham Radio Beat Frequency Oscillator - A simple free running oscillator oscillating at the receiver\'s IF (intermediate frequency) beats with the incoming signals in either CW or SSB and the resultant audio frequency goes to the AF amplifier.
    [ Hits: 580 | Votes: 0 | Rating: 0.00 ]
  • Ham Radio Circuits  pop - Circuits of SSB Transceiver, AM DSB Transmitter, Antennas, BFO, VFO, 807, FM Mike, Crystal filter and more.
    [ Hits: 35177 | Votes: 56 | Rating: 5.33 ]
  • Ham Radio Homebrewing by IK3OIL  pop - A collection of projects for Amateur Radio Homebrewing enthusiasts
    [ Hits: 23165 | Votes: 21 | Rating: 7.28 ]
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    Technical Reference : Ham Radio Homebrew

    Ham Radio Homebrew
    A collection of several amateur radio homemade projects

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