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• 80 meters spiral loop antenna
  
  N4SPP 80 meters band spiral loop antenna based on SM0VPO design
  [ Hits: 5253 | Votes: 10 | Rating: 7.1 ]

• Folded dipole antenna by N4SPP
  
  A quarter size cobra dipole antenna a multiband dipole antenna for 40 to 10 meters ...
  [ Hits: 2623 | Votes: 1 | Rating: 8 ]

• Short vertical antenna for 80 Meters
  
  A short antenna for 80 meters band article with pictures and details by N4SPP ...
  [ Hits: 1468 | Votes: 3 | Rating: 4 ]

• The ZS6BKW Multiband HF Antenna
  
  Antenna design from ZS6BKW G0GSF similar to the G5RV but it actually resonates on five ...
  [ Hits: 6521 | Votes: 8 | Rating: 6.88 ]
• G5RV Antenna Revisited
  
  GR5V characteristics and construction details PDF file a three part PDF article including the ZS6BKW ...
  [ Hits: 3689 | Votes: 1 | Rating: 9 ]

• WAU (Worked All Ukraine) award
  
  The WAU award is issued by the RadioAmator magazine for contacts with amateur radio stations ...
  [ Hits: 467 | Votes: 0 | Rating: 0 ]

• Haredata Electronics - Alan Coles
  
  Haredata Electronics is your one stop shop for Power Supplies Chargers Battery Packs Accessories Power ...
  [ Hits: 376 | Votes: 2 | Rating: 9.5 ]

• D-Star.ca
  
  One-stop resource for all D-STAR related information.
  [ Hits: 430 | Votes: 0 | Rating: 0 ]

• How the Hellschreiber works
  
  Hellschreiber is a teleprinting system based on low resolution character level facsimile Learn how it ...
  [ Hits: 492 | Votes: 0 | Rating: 0 ]

• K2 Change 20 30m band filter
  
  Elecraft K2 mod. Narrower bandpass filter, better stopband attenuation
  [ Hits: 231 | Votes: 0 | Rating: 0 ]

• Yaesu FT-2000 website - Chris Parnell
  
  FT 2000 com is the one stop shop for exchanging critical operational settings like Mic ...
  [ Hits: 1130 | Votes: 3 | Rating: 9 ]

• Ham Stop
  
  Ham and amateur radios and ham and amateur radio antennas and software equipment and products ...
  [ Hits: 1701 | Votes: 0 | Rating: 0 ]

• KitStop - Stuart Wright
  
  Kits for AM FM radio UHF control big LED displays games controls timers chasers and ...
  [ Hits: 467 | Votes: 0 | Rating: 0 ]

• Tube World
  
  Your one-stop source for high quality new old stock vacuum tubes.
  [ Hits: 595 | Votes: 0 | Rating: 0 ]

• 50 Ohm Oil Filled Dummy Load
  
  N4SPP home built 400 W ham radio dummy load project
  [ Hits: 1939 | Votes: 3 | Rating: 8.67 ]

• YCCC 6 Band Receive Bandpass filter
  
  This is a 6 band receive only filter designed to protect your receiver front end ...
  [ Hits: 1963 | Votes: 2 | Rating: 9.5 ]
• Band-stop filter
  
  Wikipedia page on Notch filter, a narrow stopband - high Q factor filter
  [ Hits: 443 | Votes: 2 | Rating: 2.5 ]
• Notch Filter Designer
  
  Online calculator, Butterworth Bandstop (Notch) Filter Designer
  [ Hits: 806 | Votes: 6 | Rating: 3.33 ]

• How eliminate RFI Interference in Off Grid Solar PV Systems - Mike Thompson
  
  How to solve RFI problems caused by the charge controller which is a PWM type ...
  [ Hits: 226 | Votes: 1 | Rating: 5 ]

• DRM Demo Receiver
  
  Christoph Petermann DF9CY DRM demonstration receiver project including Circuit Diagram and component list
  [ Hits: 588 | Votes: 1 | Rating: 7 ]

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