measurement

measurement

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• Measuring Cable Loss - Improving measurement accuracy when low-power analyzers are used.
  [ Hits: 856 | Votes: 2 | Rating: 7.5 ]
• Better Feedline Loss Measurements with Antenna Analyzers - Various publications through the years have shown how the SWR measured on a shorted (or open) feed line can be used to calculate feed line attenuation
  [ Hits: 1923 | Votes: 2 | Rating: 10 ]

• G5RV antenna - Review by G3TXQ and comparison to its modificated versions. SWR Measurements on inverted V setup and comparison from EZNEC model and a real one.
  [ Hits: 1843 | Votes: 3 | Rating: 4 ]

• Antenna Impedance measurement - When experimenting on an antenna it's often important to determine its feedpoint impedance at various frequencies across the operating band. It's easy enough to measure SWR, but sometimes we need to know more detail than this
  [ Hits: 1426 | Votes: 6 | Rating: 2.67 ]

• Testing with the Loop Antenna - NRSC AM bandwidth measurements with the loop antenna
  [ Hits: 580 | Votes: 0 | Rating: 0 ]

• LEMO Connectors - Lemo offers over 50,000 circular connectors for a variety of industries including medical, military, and test and measurement.
  [ Hits: 609 | Votes: 2 | Rating: 9.5 ]
• E-Z-Hook - Since 1956, E-Z-Hook has been manufacturing electronic test accessories used for test and measurement purposes throughout multiple industries. Test probes, multimeters, coax cables, adapters
  [ Hits: 584 | Votes: 0 | Rating: 0 ]

• Micro908 Kit - A re-usable control & computing platform for antenna measurement, PSK31 digital modems, audio filtering, signal source & VFO, memory keyer by AMQRP
  [ Hits: 1570 | Votes: 1 | Rating: 10 ]

• ExTech - Electronic test and measurement; digital multimeters, clamp-ons, portable printers, meters and dataloggers.
  [ Hits: 636 | Votes: 0 | Rating: 0 ]

• Agilent - The premier measurement company advancing electronics, communications, make signal generators,oscilloscopes, meters, multimeters, voltmeters, power analyzers
  [ Hits: 1828 | Votes: 1 | Rating: 9 ]

• Deree Electrical - Specialized in manufacturing measurement instruments for more than 25 years. Clamp meter, digital multimeter, analog panel meter, thermometer, and led panel meter
  [ Hits: 486 | Votes: 0 | Rating: 0 ]
• EQS Systems - Test and measurement instrumentation, AC & DC power supplies, power sources and analyzers, data acquisition systems and boards
  [ Hits: 397 | Votes: 0 | Rating: 0 ]

• Link Instruments - Pc based test and measurement equipment and instrumentation: digital oscilloscope, logic analyzer and spectrum analyzer.
  [ Hits: 641 | 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 ]

• Low Frequency operations by W3EEE - A squint at the world of LF This website was initially thrown together to provide ready availability to data being collected from the measurement of a transatlantic LF (Low Frequency) path.
  [ Hits: 483 | Votes: 0 | Rating: 0 ]

• ICOM 746 Temperature Measurements - The ICOM 746-Pro has acquired a history of NEC 1678G (IC-151) MMIC and driver transistor 2SK2975 failures. The failure of IC-151 appears to be a combination of ESD damage from electrostatic charge on the antenna entering IC-151, and perhaps thermal heat.
  [ Hits: 2264 | Votes: 0 | Rating: 0 ]

• HF Beam Calculator - A javascipt online calculator for 2 and 3 element beam antennas. Just input frequency and will diplay element dimensions and spacing. Measurements in Feet and Meters by G4VWL
  [ Hits: 3438 | Votes: 27 | Rating: 5.45 ]

• RevLoad - This graphics-intensive program reveals the load on the output of a matching-network, based on measurements of the components in that network. Adjust the network (tuner) for a flat input, measure or look up the network component values and you will immmediately see the R and jX values of the load on the network, presented as both a schematic with the component values and as a Smith Chart normalized to the specified system impedance.
  [ Hits: 698 | Votes: 1 | Rating: 10 ]

• A Coax Switch - An inexpensive coax switch. shows a proven inexpensive home-made antenna selection switch. If you question the use of a cheap slide switch and SO239 coax sockets, read on. Measurements in a physics lab showed there to be practically no reflection on HF and even on 70 cm the SWR was below 1.3 : 1
  [ Hits: 9681 | Votes: 8 | Rating: 7.5 ]

• Choosing Wire Size for Toroidal Inductors - Measurements that show it doesn't make much difference
  [ Hits: 2644 | Votes: 22 | Rating: 6.1 ]

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