pi coil

pi coil

Antennas : 40M

• Homebrew 20/40m Travel Antenna - W0CH
  
  This is a low cost homebrew two band travel antenna for 20 and 40 meters ...
  [ Hits: 17494 | Votes: 15 | Rating: 5.86 ]

• 40m loaded dipole - IZ0GIF
  
  This is an short dipole for 7 MHz Total length of this dipole is just ...
  [ Hits: 196 | Votes: 4 | Rating: 8.75 ]

• Microvert Antenna for 40m by ON7IR - ON7IR
  
  A mircovert antenna assembled for the 40m version of the DL7PE antenna A one meter ...
  [ Hits: 154 | Votes: 0 | Rating: 0 ]

• Loading Coil for 136 kHz
  
  Pictures of loading coils according to OK1FIG
  [ Hits: 1500 | Votes: 1 | Rating: 3 ]
• Make Your Own Loading Coils - K0FF
  
  Make your own loading coils for antenna projects using Caterpillar Grommet strips.
  [ Hits: 1404 | Votes: 3 | Rating: 7 ]

• Multi-band End-Fed Antenna - F. Dorenberg
  
  An excellent guide to homebrewing multi band end fed antennas The article embed several drawings ...
  [ Hits: 1106 | Votes: 6 | Rating: 4.5 ]

• End Fed Half-Wave Antennas - Joe
  
  An interesting article on end fed half wave wire antennas with a couple of original ...
  [ Hits: 289 | Votes: 2 | Rating: 10 ]

• Half Wave Fan Dipole Antenna - TWW Microcontroller
  
  Amateur Radio 40m 20m 15m Half Wave Fan dipole antenna project with part list pictures ...
  [ Hits: 684 | Votes: 1 | Rating: 1 ]

• Build your own RF-Choke - PD9Z
  
  How to make an effective RF Choke The coiled coax choke is the easiest to ...
  [ Hits: 797 | Votes: 12 | Rating: 7.33 ]

• A $20 HF mobile antenna
  
  A few hours of fun with PVC and wire and you have got yourself a ...
  [ Hits: 10551 | Votes: 6 | Rating: 7.33 ]
• DIY Portable Car Whip Antenna - SN0E
  
  Being frequently away from home the author owner of an Elecraft KX3 missed the opportunity ...
  [ Hits: 54 | Votes: 0 | Rating: 0 ]

• Petlowany Antennas by K6NO
  
  WorldRadio Article on Petlowany antennas base on this principle if a length of wire is ...
  [ Hits: 3767 | Votes: 9 | Rating: 6.22 ]

• Antenna Efficiency
  
  K0BG article con antenna efficiency covering topics like radiation resistance coil losses and ground losses ...
  [ Hits: 459 | Votes: 0 | Rating: 0 ]

• The Squid Pole Wire Antenna Re-visited - VK4ADC
  
  The author explores enhancing the performance of a 7 meter fiberglass squid pole wire antenna ...
  [ Hits: 91 | Votes: 0 | Rating: 0 ]

• Pierce Aluminum
  
  Distributor of aluminum and a manufacturer of finished aluminum products Pierce Aluminum offers a diverse ...
  [ Hits: 1053 | Votes: 2 | Rating: 10 ]

• Inductor Calculator - ajdesigner
  
  Calculate inductance online, with the cylindrical Coil Inductor Design Equations Formulas Calculator
  [ Hits: 279 | Votes: 1 | Rating: 1 ]

• A good regenerative receiver
  
  A good SSB CW AM regenerative receiver with a fine tuning by moving the wooden ...
  [ Hits: 7262 | Votes: 9 | Rating: 8 ]

• Grip Dip Oscillator
  
  Originally eveloped by I1FLC uses seven plug in coils covering 3 0 to 30Mhz in ...
  [ Hits: 667 | Votes: 1 | Rating: 10 ]