50 ohms

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50 ohms

15 links

Antennas : 10M

  • YBN 28-5w - 5 Elements Yagi for 28 MHz - A 5 element yagi beam antenna for ten meters band with full dimentsions, eznec file and coax match informations for 50 ohms feed line
    [ Hits: 914 | Votes: 4 | Rating: 3 ]
Antennas : 2M
  • Rectangular Loop antenna for 2 meter band - An interesting and easy to build loop antenna for VHF bands, that present a feedpoint impedance of 50 ohms thus avoiding the need for a 1/4 wave impedance transformer. This antenna is ideal for sota and other portable operations
    [ Hits: 275 | Votes: 1 | Rating: 1 ]
Antennas : 6M : 6 meter Yagi Antennas
  • 2 element Yagi for 50 MHz - This 6 meter 2 element yagi antenna is simple, compact and effective antenna for 50 Mhz. The design antenna was optimized with AO for best match to 50 ohms, no matching network. A choke balun is recommended to decouple feedline currents.
    [ Hits: 532 | Votes: 3 | Rating: 3 ]
Antennas : 80M
  • Portable Vertical Antenna for 40 and 75 - Portable Vertical Antenna for 75m and 40m featuring Low radiation angle for DX, easy to install and to match 50 ohms
    [ Hits: 3930 | Votes: 7 | Rating: 7.14 ]
  • 80 Meter Shortened Ground Plain Antenna - This antenna is a vertical loop antenna mounted on a 8 meters high grounded mast with an input impedance of 50 Ohms without a matching device
    [ Hits: 443 | Votes: 1 | Rating: 5 ]
Antennas : Baluns : 4 to 1 balun
  • 1:4 Current Balun - This project is intended to aid in tuning a balanced antenna or feedline that has a high impedance 100-600 ohms
    [ Hits: 3414 | Votes: 5 | Rating: 8 ]
Antennas : Magnetic Loop Antennas : Moxon
  • 2m Band Moxon - Moxon is a rectangle shaped directional antenna, originally designed by Les Moxon G6XN. There are couple of advantages of using this antenna. It is small in size, Easy to mast, Balanced to 50 Ohms, Near 1:1 SWR, Excellent Front to Back (F/B) ratio, Large bandwidth
    [ Hits: 583 | Votes: 1 | Rating: 6 ]
Antennas : T2FD
  • T2FD Antenna - Terminated and twisted folded dipole - T2FD is a 600-900 ohms folded dipole, terminated with resistor. Feed impedance is coupled with 50/600 ohms voltage balun. It is a wide band antenna with rather low SWR over the full designed frequency range: antenna tuner is seldom needed.
    [ Hits: 482 | Votes: 0 | Rating: 0 ]
Antennas : Tuners
  • Z-Match 100 and mini Z-Match - This is a antenna tuner with wide range tuning for antennas with a Z of + 50 Ohms on all the HF bands.
    [ Hits: 297 | Votes: 0 | Rating: 0 ]
  • L-Match Tuner Build for QRP Operation - An L-Match tuner is a device that can add either inductance (L) or capacitance (C) to the antenna, bridging that gap between 5000 ohms and 50 ohms, thus matching it to the radio. The L-Match tuner is an extremely useful device that every QRP operator will want to have.
    [ Hits: 185 | Votes: 0 | Rating: 0 ]
Technical Reference : Amplifiers : HF Amplifiers
  • 10 W Linear Amplifier - This article describes a 10 watt linear amplifier that is capable of delivering over 15 watts into 50 ohms and uses cheap plastic transistors that are used in CB equipment. by Harry Lythall - SM0VPO
    [ Hits: 11425 | Votes: 12 | Rating: 5.25 ]
Technical Reference : Coax Cables and Connectors
  • Yes, all my Coax Cables are 75 Ohms - CO2KK exposes some myths about using 75-ohm feedline with 50-ohm rigs and show how to build a cotanget transformer
    [ Hits: 1305 | Votes: 3 | Rating: 8.67 ]
Technical Reference : Dummy Loads
  • A homebrew UHF Dummy Load - A homebrew dummy load is usually a combination of several parallel carbon resistors, in order to be able a final resistance of 50 Ohms.
    [ Hits: 1644 | Votes: 2 | Rating: 5.5 ]
Technical Reference : Duplexers
  • AA5TB Antenna Coupler / SWR Bridge - Wire antennas requires a special coupling network to properly couple my 50 ohm coax to the antenna's high impedance (5000 ohms)
    [ Hits: 4748 | Votes: 2 | Rating: 9.5 ]

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