144

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Search Results for "144"

185 links

Antennas : 2M
  • BVO2 Yagis - Yagi beam plans for 144MHz band
    [ Hits: 13510 | Votes: 14 | Rating: 5.79 ]
  • 43 element Yagi for 2 mt. - 43 Element Yagi for 144.200 MHz by VE7BQH
    [ Hits: 25551 | Votes: 24 | Rating: 6.16 ]
  • G4CQM Homebrew VHF Yagi antennas - Homebrew VHF Yagi 50MHz 144MHz 432MHz 1296MHz 2320MHz 6M 2M 70CM 23CM 13CM Yagis
    [ Hits: 18109 | Votes: 94 | Rating: 8.46 ]
  • 7 Elements YAGI for 144 Mhz  pop - The QM7 antenna is a simple 7 elements Yagi with 3.7 m boom length for the lower 144 MHz SSB/MGM band, in PDF Format
    [ Hits: 37393 | Votes: 31 | Rating: 5.66 ]
  • QM5 Yagi for 2 meters band - The QM5 antenna is a simple 5 elements Yagi with 1.88 m boom length for the lower 144 MHz SSB/MGM band, I used it mainly for Sporadic-E and MS contacts. It exhibits a forward gain of 9.17 dBd; i.e. 11.3 dB forward gain over the isotropic radiator, while the F/R is about 11.5 dB. Elements
    [ Hits: 6021 | Votes: 4 | Rating: 5.25 ]
  • QM7 7 elements 144 MHz Yagi-Uda Antenna  updated - The QM7 antenna is a simple 7 elements Yagi with 3.70 m boom length for the lower 144 MHz SSB/MGM band, used it mainly for Sporadic-E and MS contacts. It exhibits a forward gain of 11.35 dBd; i.e. 13.5 dB forward gain over the isotropic radiator, while the F/R is about 12.5 dB
    [ Hits: 5050 | Votes: 14 | Rating: 5.50 ]
  • Portable Yagi for 144MHz - Simple 7 element Yagi is ideal for portable operation by EI9GQ
    [ Hits: 12018 | Votes: 28 | Rating: 7.18 ]
  • Roll-up & Copper JPole antennas - Roll-up and Copper Pipe J-Pole Antennas for 144 Mhz.
    [ Hits: 4404 | Votes: 0 | Rating: 0.00 ]
  • M3FVB 2 meter quad - Photos and building procedure for a home brew 2 elements Quad for 144 mhz.
    [ Hits: 4616 | Votes: 2 | Rating: 8.50 ]
Antennas : HB9CV
  • The G8TTI homebrews - Home made transverters blockschematics two metre HB9CV, 144MHz SSB Transceiver
    [ Hits: 2800 | Votes: 16 | Rating: 7.12 ]
Antennas : J-Pole
  • Jpole by EA6IC - Jpole antenna plan for 144 and 435 Mhz
    [ Hits: 4011 | Votes: 11 | Rating: 1.63 ]
DX Resources : Beacons : Beacon Lists
  • 144 MHz Beaconlist - List of beacons operating on 2 meters band
    [ Hits: 11733 | Votes: 74 | Rating: 4.31 ]
DX Resources : DX Peditions : Sponsors
  • INDEXA - A non-profit organization for the enhancement of amateur radio, worldwide peace, and friendship
    [ Hits: 255 | Votes: 1 | Rating: 1.00 ]
Ham Radio : Personal Pages : Europe
  • EI4IX Dave - Dedicated to 50MHz and 144MHz. Online 2m and 6m logs. Real Audio sound clips of Tropo, Aurora, Sporadic E, Meteor Scatter, TEP and F2 Propagation.
    [ Hits: 885 | Votes: 2 | Rating: 8.50 ]
Manufacturers : Antennas : HF : Vertical Antennas
  • KVK Antenna Systems - The manufacturer of the NuBeam, Vipole, and the multi-band Quad-Folded-Dipole (or QFD for short) antenna. Also have a unique multiband vertical which can combine operation on multiple HF frequencies as well as provide high gain on 50, 144 and 438MHz in a single antenna.
    [ Hits: 3449 | Votes: 1 | Rating: 1.00 ]
Operating Aids : Maps
  • ITU zone map - by QRZ Israel HAM radio portal
    [ Hits: 3431 | Votes: 12 | Rating: 6.17 ]
Operating Modes : VHF UHF Technical Reference : Duplexers
  • Duplex 144 432 - A full duplex antenna system for 144 432 Mhz
    [ Hits: 2445 | Votes: 1 | Rating: 2.00 ]
Technical Reference : Preamplifiers
  • 2m Band VHF antenna pre-amplifier - Homebrew pre-amp for 144-146 MHz amateur band and OSCAR Satellites, using BF981 Dual-gate MosFet. Gain ~15 dB, NF=1dB.
    [ Hits: 11230 | Votes: 87 | Rating: 8.59 ]
  • 144 MHz preamplifier with BF981 - Design of a preamplifier for 144 MHz with 1 dB NF and 23 dB gain using BF981. This amplifier is using a low cost silicon MOSFET (BF981 from Philips) to give more than 20 dB gain with around 1 dB noise figure on 2 meter.
    [ Hits: 16097 | Votes: 26 | Rating: 5.92 ]
  • 23cm dual stage preamp - A modification / combination of the DJ9 BV & I5TDJ 144 MHz preamp designs
    [ Hits: 2309 | Votes: 1 | Rating: 10.00 ]
  • MGF1302  GaAsFET - Published in Radioamater - CQ YU and CQ ZRS magazines, MGF1302 144 MHz and MGF1302 432 MHz
    [ Hits: 6961 | Votes: 6 | Rating: 6.17 ]
Technical Reference : Radio Direction Finding
  • 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: 183 | 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: 168 | Votes: 2 | Rating: 5.50 ]
Technical Reference : Transverters
  • 50 MHz Transverter idea - Complete 144/50 MHz transverter with GaAs Fet LNA and 400 mW out. No printed circuit board. Schematics and images by Christoph Petermann DF9CY
    [ Hits: 9021 | Votes: 34 | Rating: 6.05 ]
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