tube 7

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tube 7

69 links

Antennas : 10M
  • DK7ZB Moxon Antennas - DK7ZB- Moxons with Aluminium Tubes, plans for moxon antenna for 6 10 12 15 meters
    [ Hits: 1286 | Votes: 3 | Rating: 5.00 ]
Antennas : 70cm
  • 20 elements 432MHz LFA Yagi - A0 element super low-noise simple to build Yagi for 70cms. Uses 1/4 inch and 12 inch tube/rod
    [ Hits: 1944 | Votes: 3 | Rating: 7.00 ]
Antennas : Indoor
  • 5 Band Indoor Magnetic Loop - A indoor magnetic loop antenna that covers 20 17 15 12 and 10 meters band with a 3 meter lenght of 22 mm copper tube by G4IZH
    [ Hits: 5785 | Votes: 8 | Rating: 5.25 ]
Antennas : J-Pole Internet and Radio : Video
  • How To Make A VO-52 SAT QSO Video - Using a home made 10 element 435 & IO Loop for 145MHz, with a Yaesu FT-847. Simon - 2E0HTS, adjusts his (uplink) transmitted signal to correct the doppler of the Received (downlink) frequency.
    [ Hits: 758 | Votes: 0 | Rating: 0.00 ]
Operating Modes : Amtor
  • AMTOR demonstration - Youtube video by PR7VX using AMTOR to test performance
    [ Hits: 305 | Votes: 0 | Rating: 0.00 ]
Radio Equipment : HF Amplifiers : Acom 1000 Radio Equipment : HF Amplifiers : Ameritron AL-811
  • AL811 trouble shooting - Ameritron AL80B AL811H AL572 Amplifier Trouble Shooting. Tubes replacement, resistor changes.
    [ Hits: 925 | Votes: 3 | Rating: 9.67 ]
Radio Equipment : HF Amplifiers : Ameritron AL-811H
  • AL-811H inside - Ameritron AL-811H Amplifier inside 800 Watt PA modified with 4x 572b tubes
    [ Hits: 1413 | Votes: 2 | Rating: 5.50 ]
Radio Equipment : Microphones : Heil PR-781
  • Heil PR-781 Microphone - Review of the Heil PR-781 with a Yaesu FT-950 includes youtube movies and a nice product review
    [ Hits: 241 | Votes: 0 | Rating: 0.00 ]
Radio Equipment : VHF-UHF Handhelds : Baofeng UV-3R Shopping and Services : Antenna Mount
  • Nuxcom.de - Antenna parts for self construction, especially for VHF and UHF Yagis designed by Martin Steyer, DK7ZB, coax cables, connectors, aluminium tubes-
    [ Hits: 746 | Votes: 1 | Rating: 10.00 ]
Technical Reference : Amplifiers : HF Amplifiers
  • HF power amplifier using GI7B - Gi7b is tube designed for microwaves but working good as HF amplifier. Idea is to build cheap, reliable HF amplifier covering 160 meters band.
    [ Hits: 3701 | Votes: 9 | Rating: 4.33 ]
  • HF Power Amplifier by CT1FMS - An RF power Amplifier for HF bands with 3 GI-7B tubes by CT1FMS
    [ Hits: 1518 | Votes: 3 | Rating: 5.00 ]
  • Dentron MLA-2500 Retrofit to the GI-7B - How retrofit the MLA-2500 with the Russian GI-7B tube to replace the 8875's which are both expensive and hard to come by tubes by W4EMF
    [ Hits: 1689 | Votes: 1 | Rating: 5.00 ]
Technical Reference : HF Radios
  • One Valve CW transmitter - This transmitter was first constructed in 1987 and provided the author with his first real rig, capable of distances of more than about 100 metres.Use a 6GV8 tube.
    [ Hits: 469 | Votes: 0 | Rating: 0.00 ]
Technical Reference : Vacuum tube
  • Electron Tubes & Valves Data - KyteLabs InfoBase - Electron Tubes & Valves Data
    [ Hits: 792 | Votes: 3 | Rating: 8.00 ]
  • 23cm GI-7B(T) PA - Tubes used to achieve about 500W on 23 cm band
    [ Hits: 411 | Votes: 0 | Rating: 0.00 ]
  • Vacuum Tubes - Vacuum Tubes History, Theory, and Circuits
    [ Hits: 333 | Votes: 1 | Rating: 8.00 ]
  • Arcing or Gassy 572B Tube - Common problems of the 572B tubes often used in many RF Power Amplifiers
    [ Hits: 318 | Votes: 0 | Rating: 0.00 ]
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