frequency meter

frequency meter

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• Speaker Wire Delta Loop Antenna for 20M - WB3GCK
  
  The antenna I built was inspired by a portable delta loop designed by Doug DeMaw ...
  [ Hits: 128 | Votes: 0 | Rating: 0 ]

• 20 meter short loaded vertical antennas - N4SPP
  
  Loading is a way to lower the resonant frequency of an antenna radiator This technique ...
  [ Hits: 232 | Votes: 1 | Rating: 9 ]

• Yagi Uda Antenna Online Calculator - changpuak  ^updated
  
  A basic YAGI UDA online antenna calculator accept as input frequency number of elements diameter ...
  [ Hits: 112 | Votes: 4 | Rating: 6.25 ]

• Chokes and Temperature changes - PA0NHC
  
  The influence of temperature changes in Common Mode Chokes To get an indication of the ...
  [ Hits: 46 | Votes: 0 | Rating: 0 ]

• HB9CV Online Antenna Calculator - changpuak
  
  Online HB9CV antenna calculator accept as input the desired resonating frequency and provides dimensions for ...
  [ Hits: 220 | Votes: 4 | Rating: 10 ]

• Cantenna Calculator - changpuak
  
  Aka Circular Waveguide Antenna This online antenna calculator let you plan your cantenna for the ...
  [ Hits: 380 | Votes: 5 | Rating: 4 ]

• DIY Yagi Antenna - DiMaria
  
  This article describes the phases for the construction of a Yagi antenna The calculations of ...
  [ Hits: 109 | Votes: 4 | Rating: 3.5 ]

• HF communication prediction tools - BOM
  
  Online HF Communication prediction system provided by the Australian Governament Buerau of Metereology allow to ...
  [ Hits: 169 | Votes: 0 | Rating: 0 ]

• Propagation on 630 Meters and 2200 Meters - K9LA
  
  This is a theoretical look at propagation on 630 Meters and 2200 Meters using ray ...
  [ Hits: 39 | Votes: 1 | Rating: 10 ]

• Icom 706MK2G Repair - G0UIH
  
  After years of reliable performance a 26 year old Icom 706MK2G exhibited an unusual deviation ...
  [ Hits: 19 | Votes: 0 | Rating: 0 ]

• ICOM IC-R75 Review by N9EWO - N9EWO
  
  Icom IC R75 tabletop HF communications receiver came onto the market back in 1999 and ...
  [ Hits: 44 | Votes: 0 | Rating: 0 ]

• Radio Station WWV - WWV
  
  NIST radio station WWV broadcasts time and frequency information 24 hours per day 7 days ...
  [ Hits: 53 | Votes: 1 | Rating: 10 ]

• RF Inductor Calculator - vk3cpu
  
  This air core solenoid style RF inductor calculator calculates the inductance wire size number of ...
  [ Hits: 101 | Votes: 3 | Rating: 7 ]

• Spectrogram - W5BIG
  
  Spectrogram a PC based audio frequency spectrum analyzer available from Visualization Software aids ham radio ...
  [ Hits: 23 | Votes: 0 | Rating: 0 ]

• Arduino QRP Transceiver: DIY Success on HF Bands - M0XPD
  
  This article introduces an Arduino based QRP CW Transceiver designed for lower HF bands The ...
  [ Hits: 114 | Votes: 1 | Rating: 1 ]

• RF Toroid Calculator - VK3CPU
  
  This RF Toroid Calculator provides graphical calculator used to determine the inductance and other parameters ...
  [ Hits: 102 | Votes: 2 | Rating: 10 ]

• A 2 meter band-pass cavity using surplus Heliax - ka7oei
  
  Cavity is often required at a busy site to not only prevent its receiver from ...
  [ Hits: 130 | Votes: 2 | Rating: 3 ]

• Simple 2.4 GHz SWR Meter - N9ZIA
  
  This is a simple 2 4 GHz SWR meter which is based around surplus microwave ...
  [ Hits: 144 | Votes: 2 | Rating: 6 ]

• 2m to 70cm Transverter Circuit - VK4ADC
  
  A 70cm 432 MHz Transverter Project transverter circuit is an electronic device that converts a ...
  [ Hits: 82 | Votes: 0 | Rating: 0 ]

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