noise

noise

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• PA0RDT Active Antenna - Active antennas can be very useful, in particular they can help reduce local electrical noise by allowing the antenna to be installed in a corner of the garden well away from house wiring. The original PA0RDT antenna uses a very small patch for the antenna and relies on the antenna being installed quite high.
  [ Hits: 309 | Votes: 0 | Rating: 0 ]

• VHF Baluns: Fact and Fancy - Our ideas about HF baluns have changed dramatically in recent years. The focus today is very much on suppressing unwanted common-mode RF currents, to reduce both the received noise levels and the risks of causing interference on transmit.
  [ Hits: 283 | Votes: 0 | Rating: 0 ]

• About The Beverage Antennas - Receiving Antennas - An article about the Beverage antennas, super long wire receiving antennas thar are unidirectional and have a very low noise that makes this antenna excellent for low band dxing. By Thomas R. Sundstrom W2XQ, 73, June 1981, 73 Magazine
  [ Hits: 185 | Votes: 1 | Rating: 10 ]

• NOAA Satellite Reception with QFH Antenna - How to receive NOAA weather satellite with a home made QFH Antenna. This project includes some easy and efficient notch filters to suppress noise from FM frequencies
  [ Hits: 260 | Votes: 1 | Rating: 8 ]

• EME Dish Antenna Project - A 3.2m EME dish project that provides a better performance on 1296 MHz (10+dB sun noise vs. 6dB with my 432 array) and an even better performance on 2304 MHz
  [ Hits: 346 | Votes: 0 | Rating: 0 ]

• Weak Signals - Reduce volume to reduce noise - This article discusses how volume reduction can help in the reception of weak signals by reducing the noise level. It is commonly known that reducing the volume also reduces the background noise, and especially in the reception of weak digital signals it can be beneficial
  [ Hits: 229 | Votes: 1 | Rating: 10 ]

• Elecraft K3 fans noise - Replacing fan to the Elecraft K3 and solving temperature issues after replacement, by changing fans with other compatible ones.
  [ Hits: 143 | Votes: 0 | Rating: 0 ]

• ICOM IC-756Pro Receiver Noise - If your 756 has lots of noise with crackles and sweeping heterodynes, especially noticeable on AM, it may be due to a faulty electrolytic capacitor in the noise-blanker circuit
  [ Hits: 271 | Votes: 0 | Rating: 0 ]
• ICOM 756 and 756PRO - Ini this article the author compare the Icom 756 and Icom IC 756 PRO. Comparison is very detailed and includes S Meter Calibration, Microphone Gain, Transverter Jack, the noise blanked, the spectrum analyzer, audio quality, notch filter, compression meter, noise reduction, sensivity and filter settings along to many other features making this article a must for who want to compare this two models
  [ Hits: 234 | Votes: 1 | Rating: 8 ]

• TS-590S audio noise - With high impedance earphones plugged into the audio jack on the Kenwood TS-590S or TS-590SG, you can hear a really annoying noise even with the AF volume set to zero. A simple quick-and-dirty solution is a resistor in series to the audio output.
  [ Hits: 130 | Votes: 1 | Rating: 9 ]

• Icom IC-R7100 Clicking Noise - How to solve the problems with the ICOM IC R7100 receiver that every time the squelch opens or closes, it produces a clicking noise.
  [ Hits: 158 | Votes: 0 | Rating: 0 ]

• Zeus Radio - Software Defined Radio - Zeus Radio program is designed specifically for the ZS-1 transceiver and supports all the basic functions (RIT, XIT, SPLIT, Noise Reduction, Auto Notch Filter, etc.) in order to work in the broadcast brought only pleasure. Zeus Radio works also with Hermes, Anan, Afedri, Red Pitaya, HiQSDR, Odyssey, Extio, RTL-SDR, Peaberry, Winradio, SDR-IQ, Afedri
  [ Hits: 508 | Votes: 1 | Rating: 8 ]

• 435 plus 1296MHz ATF54143 Pre-amplifier - The prototype for this amplifier was originally designed for 70cm and was used on the 2004 3B9C Dx-pedition to Rodriguez Island for satellite and EME. It had a noise figure of 0.49dB with an associated gain of 20dB.
  [ Hits: 336 | Votes: 0 | Rating: 0 ]

• HF Band QRM/QRN Noise Canceller - This noise canceller is suitable for use with a receiver or transceiver and works on all modes, including AM, FM and SSB.
  [ Hits: 1652 | Votes: 5 | Rating: 8.2 ]
• VK5TM Noise Canceller - Noise Canceller kit originally developed about 1989 by G4WMX and GW3DIX and improved by DK9NL and DG0KW.The VK5TM Noise Canceller is another version of the design, with the HF Vox circuit removed and a couple of other minor changes, including the use of SMD JFETs and a double-sided pcb.
  [ Hits: 476 | Votes: 1 | Rating: 10 ]

• The truth about ferrites - Articles on the correct placement of ferrite noise suppressors are common, but little has been written about the different options and where to buy them. This page contains an interesting comparison of several ferrite types used to reduce RFI.
  [ Hits: 388 | Votes: 2 | Rating: 9.5 ]
• QRM.guru - QRM.guru has been developed to assist radio hams in dealing with RF noise. This is an educational and reference resource.
  [ Hits: 209 | Votes: 0 | Rating: 0 ]

• How to make a mains filter for EMC and noise reduction - Article showing how I've made a mains filter to reduce EMC in the electricity supplying my shack. I've used a type 31 Fair-Rite ferrite core and the video shows how this performs on 160m through to 40m.
  [ Hits: 1225 | Votes: 5 | Rating: 9.6 ]
• Mains Filter for EMC & Noise Reduction - This article shows how to make a mains filter that can be extremely effective in reducing and in some cases eliminating completely EMC from the electricity supplying your shack
  [ Hits: 308 | Votes: 3 | Rating: 3.67 ]

• Anritsu MS2711A Repair - Repairing an Anritsu MS2711A handheld spectrum analyzer
  [ Hits: 148 | Votes: 0 | Rating: 0 ]

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