power o/p

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power o/p

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Antennas : Active

  • Mini-Whip Active Antenna - This HF active antenna is a build of the PA0RDT Mini-Whip from a kit, it covers the entire HF band (3 to 30 MHz) and below (supposedly down to 10 kHz). It is powered by an external 12-15V supply, consuming about 50 mA.
    [ Hits: 93 | Votes: 0 | Rating: 0 ]
Antennas : Feed Lines
  • Measuring Cable Loss - Improving measurement accuracy when low-power analyzers are used.
    [ Hits: 856 | Votes: 2 | Rating: 7.5 ]
Antennas : Tuners
  • Getting the most from your tuner - Here is how to adjust this popular tuner circuit so it transfers maximum power to your antenna without going snap
    [ Hits: 2825 | Votes: 3 | Rating: 6.33 ]
Operating Modes : NPR New Packet Radio
  • NPR New Packet Radio - IP over 430 MHz - NPR (New Packet Radio) is a custom amateur radio digital protocol, designed by F4HDK to transport bidirectional IP trafic over radio links on the 70cm band. This IP protocol is optimized for point-to-multipoint topology, with the help of managed-TDMA. Bitrate is up to 500kbps. Home Made modem has a built-in ethernet port to connect to PC. To boost power a DMR amplifier is required to reach 20W. This project is an extension of HSMM - Hamnet - AREDN networks
    [ Hits: 151 | Votes: 0 | Rating: 0 ]
Operating Modes : Portable Operations
  • Portable Operating Tips for Ham Radios - This article is from the book Ham Radio For Dummies and features some tips for portable amateur radio operations, on Field Day or generic outdoor operation, like selecting the proper antenna and portable power.
    [ Hits: 79 | Votes: 1 | Rating: 10 ]
Technical Reference : Lightning Protection Technical Reference : Power Meter
  • G3PTO Power Meter - This Power meter is capable of dissipating up to 100 watts for a short period and 20 watts continuously
    [ Hits: 588 | Votes: 0 | Rating: 0 ]
Technical Reference : QRP Projects Technical Reference : Raspberry Pi
  • PiFox - Raspberry pi powered fox hunt transmitter. pifox is a script written by KM4EFP to configure, control, and deploy a Raspberry Pi as a fox hunt transmitter. No external radio needed use your Pi's gpio output as a radio transmitter.
    [ Hits: 31 | Votes: 0 | Rating: 0 ]

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