tech

tech

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• DF9CY 11 Element for 432 MHz - A short good performing antenna for 70cm
  [ Hits: 1780 | Votes: 0 | Rating: 0 ]

• Wire Dipole for 7.05 MHz - Inverted Vee antenna for 40m with simulation data by DF9CY
  [ Hits: 1626 | Votes: 0 | Rating: 0 ]

• The Coaxial Line - Impedance matching, Transmission Lines, Characteristic Impedance, VSWR & Mismatch and Antenna Losses
  [ Hits: 888 | Votes: 0 | Rating: 0 ]

• Noise Reduction on 40m - DF9CY implementation of W1HIS suggestion of inserting a common mode choke into a 40m antennas feed-line.
  [ Hits: 1384 | Votes: 0 | Rating: 0 ]

• Choosing antenna mounting method - Article on mobile antenna mounting methods by Firestik
  [ Hits: 1324 | Votes: 0 | Rating: 0 ]

• About Antenna Gain - Explanation of antenna basics concepts like antenna gain at marc's technical pages
  [ Hits: 7574 | Votes: 14 | Rating: 5.85 ]
• Antenna Gain to ERP - A radio's transmitting power can be concentrated along the horizon by use of a GAIN antenna. Although you may still be transmitting with four watts of power, your effective radiated powerwill be greatly increased. This table shows the effects of antenna gain on a transmitter with 4 watts of transmit power.
  [ Hits: 1386 | Votes: 4 | Rating: 4.5 ]

• ZX 6-6 50 MHz Yagi Antenna - Antenna dimension, diagram and simulation of the ZX Antennen ZX 6-6 Yagi for VHF UHF by DF9CY
  [ Hits: 1143 | Votes: 0 | Rating: 0 ]

• Anritsu - Provides technology and solutions for the electronic test and measurement, optical, rf and microwave, wireless, wired, telecommunications. Make Frequency Counters, Antenna and spectrum analyzers, power meters, signal generators
  [ Hits: 816 | Votes: 0 | Rating: 0 ]

• Precision Mastech Enterprises - Established in 1987 in manufacturing analogue and digital multi-meters and various testing instruments.
  [ Hits: 464 | Votes: 0 | Rating: 0 ]

• Gage Applied Technologies - Gage applied technologies designs and manufactures high-speed data acquisition systems, high-speed digitizers in pci / cpci / pxi or pc oscilloscopes, providing utmost measurement fidelity for high frequency signals.
  [ Hits: 550 | Votes: 0 | Rating: 0 ]

• Signatec - Signatec manufactures pc based data acquisition waveform digitizers pci daq boards, digital signal processing pci dsp boards, waveform signal generator pci dac boards, and real time waveform recording products for the signal technology market.
  [ Hits: 460 | Votes: 0 | Rating: 0 ]

• Repeater Builders Technical Information - Providing valuable information on building amateur and commercial repeaters.
  [ Hits: 2563 | Votes: 7 | Rating: 9.72 ]

• Choosing an Antenna - Choosing the right antenna for you, by Lewis G. McCoy W1ICP
  [ Hits: 2120 | Votes: 0 | Rating: 0 ]

• Yaesu FT-102 page - Relay substitution tutorial, power amplifier tuning and Technical Characteristics
  [ Hits: 901 | Votes: 2 | Rating: 4 ]

• DF9CY Technical Articles and Material - A collection of technical articles on antennas, radios and other stuff.
  [ Hits: 894 | Votes: 1 | Rating: 8 ]

• How To Solder - Pictures and description for a perfect soldering.A tutorial on soldering technique includes videos.
  [ Hits: 1075 | Votes: 1 | Rating: 7 ]
• De-soldering - An overview of some of the ways, and the key tips on how electronics soldered joints can be unsoldered or desoldered.
  [ Hits: 1075 | Votes: 0 | Rating: 0 ]
• How to solder - Key facts about how to solder, how to solder wire, how to solder pcb's, and including general soldering techniques and the best ways of making good solder joints for electronic circuits and construction. Includes video
  [ Hits: 751 | Votes: 0 | Rating: 0 ]

• ICOM Soundcard Interface - IC820H or other Icom Radios Soundcard interface for VHF EME use by DF9CY
  [ Hits: 1497 | Votes: 0 | Rating: 0 ]

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