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41 links and 1 categories about small hf on dxzone.com

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Antennas
  • HF Balcony antenna - Small HF balcony antenna project
    [ Hits: 18260 | Votes: 34 | Rating: 5.10 ]
  • Maria Maluca Antenna - This small beam fed with VHF ribbon line consists of a dipole and a director adjusted for the desired band by dl8ncr
    [ Hits: 1790 | Votes: 5 | Rating: 7.00 ]
Antennas : 15M
  • HF Copper Loop - A small transmitting loop antenna for 14MHz and 21MHz. This is an antenna you might consider if you have limited space, by Lloyd Butler VK5BR Based on material originally published in Amateur Radio, 11 1991
    [ Hits: 22143 | Votes: 17 | Rating: 6.48 ]
  • HF Copper Loop for 20 and 15 meters - A Small Transmitting Loop Antenna for 14MHz and 21MHz. This is an antenna you might consider if you have limited space, by Lloyd Butler VK5BR
    [ Hits: 6234 | Votes: 1 | Rating: 5.00 ]
  • Small loop antenna for 15 and 20 meters - A Small Transmitting Loop Antenna for 14MHz and 21MHz. This is an antenna you might consider if you have limited space by Lloyd Butler VK5BR
    [ Hits: 3056 | Votes: 1 | Rating: 2.00 ]
Antennas : 2M
  • The Moxon Rectangle on 2 Meters  updated - We often think of the Moxon rectangle as strictly an HF antenna. However, its small size and special far field pattern lend themselves to some VHF applications. So let's see how to adapt the design to 2 meters (as a popular band choice) and also see a few of the uses to which we may effectively put the design.
    [ Hits: 9157 | Votes: 7 | Rating: 2.57 ]
  • 2m VHF antennas with high gain - 2m SSB/CW-12.5 Ohm Yagis with extrem high gain and small bandwidth. These Yagis were constructed as ultra-light, portable Yagis with extrem high gain. They have small bandwidth and are working from 144,0-144,8MHz with good SWR.
    [ Hits: 6807 | Votes: 8 | Rating: 7.63 ]
Antennas : EH
  • HF Antennas for small places - Isotron antennas and EH antennas, solutions for small places by F5IXU in french
    [ Hits: 4429 | Votes: 12 | Rating: 6.34 ]
Antennas : Loop Antennas : Magnetic Loop
  • 160/80m Coaxial Receiving Loop Antennas  pop - Receiving loop antenna for top band. This antenna allow to reduce noise on both bands. The stand alone 80m loop is approximately four feet in diameter. And made of light weight material. Which makes it ideal for portable use or you can mount it above a pre-existing vhf antenna, and due to it's small size it is quite rotatable.
    [ Hits: 57724 | Votes: 53 | Rating: 6.13 ]
  • Thinking about Ideal Loops - Loop antennae have been used from ELF to UHF since the beginning of radiocommunications. At low frequencies, the main problem for loop antennae is to have enough sensitivity; the antenna being very small respect to the wavelength the collected energy is also small. To increase the output level the loop may be made resonant, so loosing it%u2019s intrinsic aperiodic characteristics.
    [ Hits: 1675 | Votes: 0 | Rating: 0.00 ]
Antennas : Mobile
  • A $20 HF mobile antenna  updated - A few hours of fun with PVC and wire and you’ve got yourself a respectable road radiator. The antenna consists of little more than some PVC pipe topped by a RadioShack replacement whip antenna and a couple of coils made from a small roll of #14 house wire.
    [ Hits: 8890 | Votes: 6 | Rating: 7.33 ]
Antennas : Multiband
  • A Stealthy HF Coat Hanger Antenna - A multiband stealth antenna. Tuner is required. The antenna is made from a $15, 500 ft roll of black #14 insulated stranded wire, about 120 small black wire ties, and maybe 30 or so large black wire ties.
    [ Hits: 6350 | Votes: 5 | Rating: 9.40 ]
Antennas : Satellite
  • UHF Yagi for AO-40 - Based on DL6UW Yagi antenna's design-formula The forward gain is 13.6 dBi (about 11.5 dBd) and it's pretty small, about 1,5 m in length
    [ Hits: 2237 | Votes: 4 | Rating: 6.75 ]
Antennas : Tuners
  • A Z match tuner for HF bands - This small tuner by KC8AON has only 2 controls and will tune almost anything from 10 to 80
    [ Hits: 7758 | Votes: 4 | Rating: 3.50 ]
  • A Portable Antenna Matching Unit - A small HF antenna tuner project for qrp operations. Includes circuit diagrams pictures and test results by GW4ALG
    [ Hits: 12811 | Votes: 4 | Rating: 5.50 ]
  • HF VHF mini antenna tuner - A small antenna tuner project that cover from 3 to 150 Mhz with a max power of 50 watts by ON6MU
    [ Hits: 3710 | Votes: 7 | Rating: 8.14 ]
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: 20683 | Votes: 29 | Rating: 9.01 ]
Contesting : Clubs
  • PI4COM Contest Group - PI4COM is a small group of enthusiastic radio amateurs who like HF contesting
    [ Hits: 172 | Votes: 5 | Rating: 10.00 ]
Manufacturers : Antennas : HF
  • Isotron Antennas - Isotron antennas are low-profile HF antennas. If you need a small antenna, then an Isotron may be the answer. Bilal isotron antennas.
    [ Hits: 5233 | Votes: 19 | Rating: 5.90 ]
Operating Modes : Mobile
  • ARRLWeb: Automobile - Hams have been putting stations in their cars since the Twenties. Today, there is great satisfaction in facing the challenge of installing a transceiver in our small cars and pick-ups, using somewhat inefficient antennas
    [ Hits: 697 | Votes: 2 | Rating: 10.00 ]
Radio Equipment : HF Transceivers : Yaesu FT-817
  • Yaesu FT-817 Portable QRP Transceiver - The FT-817 is a small 5W MF/HF/VHF/UHF transceiver with internal batteries. Here is an assortment of technical information K6XX put together about this rig that might interest you.
    [ Hits: 9343 | Votes: 6 | Rating: 5.50 ]
Radio Equipment : HF Transceivers : Yaesu FT-857
  • Yaesu FT-857 description - The FT-857, the world's smallest HF/VHF/UHF mobile transceiver, provides base station-type performance from an ultra-compact package that's ideal for mobile or external battery portable work.
    [ Hits: 947 | Votes: 0 | Rating: 0.00 ]
Technical Reference : Amplifiers : HF Amplifiers
  • 1.5 to 30 Mhz RF Amplifier  updated  pop - This high range amplifier is very small [SB200 size] Vacuum variable input and output caps as well input and output switching.
    [ Hits: 50104 | Votes: 36 | Rating: 3.61 ]
Technical Reference : Dummy Loads
  • UHF dummy Load - A very simple and effective dummy load can be made from several resistors, a connector, and a small metal plate or piece of PC board stock.
    [ Hits: 1696 | Votes: 2 | Rating: 6.00 ]
  Result Page:  1 2 [next]
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