high q

high q

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• High Performance 40 Meters Vertical - 40 meter vertical antenna construction, a shortened easy-to-build vertical, with no-radials, made from surplus military camouflage poles
  [ Hits: 2233 | Votes: 2 | Rating: 8.5 ]

• 3 Element 12,5 Ohm Yagi for 50 MHz - Article about a high-gain, narrow-band version feature 7.15 dBd and a F/B 13dB with details on how to setup in array mode
  [ Hits: 469 | Votes: 2 | Rating: 6.5 ]

• QRO No-Tuner Multiband Dipole - Construction details of a multiband dipole that can can operate at high power levels, and match its 50-ohm coax feedline without a tuner
  [ Hits: 1508 | Votes: 2 | Rating: 4.5 ]

• 20m Half-Wave End Fed - A Half wave antenna has a high impedance feed point. This can be matched using a 1/4 wave stub matching section and converts the 40m vertical into an L-shaped 20m J-Pole antenna. The 300 ohm feeder used for this purpose must be kept away from the ground.
  [ Hits: 1845 | Votes: 7 | Rating: 8 ]

• Broadcast Antennas on Buildings - When a broadcast antenna is to be placed on top of a building, there are special problems of feeding and grounding. The radiator is usually electrically short, that is, much less than one-quarter wavelength high.
  [ Hits: 358 | Votes: 2 | Rating: 10 ]

• VHF Log Periodic Antenna - 17-Element Very High Frequency/Ultra High Frequency Log Period Dipole Array
  [ Hits: 1246 | Votes: 7 | Rating: 5.86 ]

• Magnetic Loop QRO - Magnetic Loop with high-voltage variable capacitor and variable entry point by OE1VFW
  [ Hits: 728 | Votes: 3 | Rating: 1 ]

• Antennas of Field Day - Main High Frequency Antennas from the 2009 LARC FARL Field Day, Ford Amateur Radio League. A document comparing antenna performances and flexibility among a G5RV an Carolina Windom and a Cushcraft R7 vertical antenna.
  [ Hits: 413 | Votes: 0 | Rating: 0 ]

• Some Useful ZS6BKW Modifications - The ZS6BKW antenna evolved from an optimization of the G5RV antenna. The SWR on 80m is too high and the 40 ft ladder line matching section is a little too long on 17m and a little too short on 10m
  [ Hits: 1025 | Votes: 3 | Rating: 4 ]

• Messi e Paoloni - High quality RF coax cables designed for ham radio use featuring high efficiency screening attenuation and transfer impedance.
  [ Hits: 242 | Votes: 2 | Rating: 10 ]

• Hytera - Hytera, a leading designer and manufacturer of professional mobile radio communication equipment, offers complete and customized communication solutions to government, public security, utility, transportation, enterprise & business for higher organizational efficiency.
  [ Hits: 260 | Votes: 0 | Rating: 0 ]

• SurplusEQ.com - Buy, Sell and Trade High-Tech Equipment, including test equipments, meters, testers.
  [ Hits: 373 | Votes: 0 | Rating: 0 ]
• MATsolutions - Since 1992, MATsolutions has delivered the assurance our clients need when acquiring, maintaining, and managing high-quality test and measurement equipment. Used Electronic Test & Measurement Equipment Sales, Calibration, Repair & Services
  [ Hits: 174 | Votes: 0 | Rating: 0 ]

• RemAud Remote Audio Software - RemAud is a Voice over IP (VoIP) application primarily designed for two-way amateur radio remote control over the Internet. RemAud uses streaming-audio technology in a client-server architecture. It features high radio sound quality, low latency, low bandwidth and very low CPU usage by DF3CB
  [ Hits: 2411 | Votes: 13 | Rating: 7.85 ]

• N4PY Software - N4PY Software is your source for high quality, effective rig control software for your transceiver. N4PY offers rig control software for a wide variety of receivers from the Elecraft K3 to the Ten Tec RX 320 receiver and it is major equipment integrator supporting panadapters, winkeyer, Tmate2 or FlexControl
  [ Hits: 1212 | Votes: 0 | Rating: 0 ]

• 80 Watt FM stereo broadcast transmitter - A high quality broadcast transmitter big enough for a medium town
  [ Hits: 713 | Votes: 1 | Rating: 10 ]

• TVI Filters - High pass filter schematics for TVI and examples of finished filters
  [ Hits: 1007 | Votes: 5 | Rating: 7.6 ]

• Progressive Receiver Information by AA3SJ - High Performance Communications Receiver AKA, The Progressive Receiver
  [ Hits: 375 | Votes: 1 | Rating: 10 ]

• TVI filters - Examples of absorbtive low-pass filters in which the unwanted high-frequency energy is separated from the wanted output and then dissipated in matched resistors
  [ Hits: 356 | Votes: 0 | Rating: 0 ]
• 144 Mhz Stop band TVI filters - A High pass filter will not help, use a stop-band filter to notch out the beast.
  [ Hits: 725 | Votes: 1 | Rating: 2 ]

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