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• Enhancing Performance with W8JK/MOXON Antenna Variant - F5NPV introduces a variant of the W8JK antenna design, employing the MOXON principle. With extended monopoles, it outperforms the Open-Folded W8JK, yielding a 1dbd gain improvement, enhanced performance on 30m and 10m bands, bi-directionality, and lower side attenuation. The design's focus on higher radiation impedance results in increased antenna efficiency and reduced losses. Despite these improvements, the bill of materials remains unchanged.
  [ Hits: 182 | Votes: 0 | Rating: 0 ]

• 137MHz Quadrifilar Antenna - This version of the 137MHz quadrifilar antenna for APT reception is an adaptation from Bill Sykes and Bob Cobey Taming the QFH which appeared in the March 1997 RIG magazine. This article contains detailed 3D pictures and models and detailed pictures.
  [ Hits: 232 | Votes: 3 | Rating: 7 ]

• ScopeDSP - ScopeDSP analyzes sampled-data signals in the time and frequency domains. It can generate, read, write, window, and plot real and complex digital data signals.
  [ Hits: 839 | Votes: 1 | Rating: 1 ]

• ScopeIIR - ScopeIIR: an Infinite Impulse Response (IIR) digital filter design tool for Windows. It designs high-order IIR filters based on analog filter prototypes, and can design lowpass, highpass, bandpass, and bandstop filters.
  [ Hits: 778 | Votes: 2 | Rating: 5.5 ]

• Emergency Go Kit - W2EB Bill amateur radio and emergency go kit
  [ Hits: 1773 | Votes: 3 | Rating: 7 ]

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