4 meter

4 meter

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• Zippiro antenna for 40 Meters
  
  Very compact and high efficiency antenna very low radiation angle even at low height ...
  [ Hits: 2113 | Votes: 3 | Rating: 5.67 ]

• Design & Performance of a Choke Balun
  
  Design & Performance of a Choke Balun and Balanced Transmission Line by G4FGQ
  [ Hits: 1282 | Votes: 3 | Rating: 4.33 ]

• 40 m Band Delta loop Antenna - YO4DFT
  
  40 meters band Delta loop antenna plan that is vertically polarised
  [ Hits: 9731 | Votes: 19 | Rating: 4 ]

• 40/80 Trap Dipole Design
  
  An home made trapped dipole antenna for 40 and 60 meters band by 2E0HTS ...
  [ Hits: 2577 | Votes: 4 | Rating: 7.75 ]
• Inverted V Dipole for 10 15 20 meters
  
  Inverted V Trapped dipole antenna for 14MHz, 21MHz and 28MHz ham radio bands.
  [ Hits: 1298 | Votes: 0 | Rating: 0 ]

• 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 ]

• 50MHz 4 elements HB9CV antenna
  
  4 elements HB9CV antenna for six meter band by JA1HWO
  [ Hits: 3398 | Votes: 17 | Rating: 4.41 ]

• J-Pole for 14MHz  ^updated
  
  20 meter wire j pole for 14 2 MHz a vertical end fed half wave ...
  [ Hits: 5238 | Votes: 4 | Rating: 6.25 ]
• 20 Meter Jpole Vertical
  
  The J pole vertical for 14MHz is built from a fifty foot TV push up ...
  [ Hits: 7841 | Votes: 6 | Rating: 6.5 ]

• RX antenna for 160/80 meters
  
  RX Antenna 160m 80m Band Splitter Switch a small project that will work along with ...
  [ Hits: 2059 | Votes: 0 | Rating: 0 ]

• OCF 2-Meter Sleeve Dipole Antenna
  
  A 144 MHz dipole antenna made from coax PVC pipe and aluminum foil tape ...
  [ Hits: 3092 | Votes: 7 | Rating: 4.85 ]

• Multiband HF Vertical
  
  A telescopic pole that you adjust to suit the band you re working on tested ...
  [ Hits: 2384 | Votes: 5 | Rating: 7 ]

• WA4FC/B 10 meter Beacon
  
  28.231 MHz beacon ay WA4FC
  [ Hits: 180 | Votes: 1 | Rating: 8 ]

• QROlle, 6 Band QRP-rig - Tilman D. Thulesius SM0JZT
  
  QROlle QRP rig 6 Band Shortwave rig with SMD s 160 80 40 30 20 ...
  [ Hits: 2236 | Votes: 2 | Rating: 9.5 ]

• GAP Titan DX - Test Details
  
  GAP Titan DX 10 15 20 40 meter performance tests by AA3RL
  [ Hits: 851 | Votes: 0 | Rating: 0 ]

• 5-band RF Power Amplifier
  
  This project uses a widely available IRF510 MOSFET work on HF 80 40 30 20 ...
  [ Hits: 6954 | Votes: 5 | Rating: 7.4 ]

• 75 meter AM Transceiver
  
  Frequency coverage: 3.75 MHz to 4.00 MH transceiver for 75 MHz band
  [ Hits: 1190 | Votes: 1 | Rating: 10 ]

• A 40 meter SSB QRP transceiver
  
  This transceiver was conceived as a power efficient small lighweight unit to be carried in ...
  [ Hits: 2298 | Votes: 1 | Rating: 1 ]
• QRP transceiver for 7 Mhz
  
  An optimized QRP transceiver for 40 meters band
  [ Hits: 1219 | Votes: 2 | Rating: 5.5 ]

• DSB/CW QRP rig for 20 and 40 mt.
  
  An experimental DSB/CW QRP rig for 20 and 40 meter bands
  [ Hits: 1406 | Votes: 1 | Rating: 10 ]

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