diy swr meter

Vertical antenna for 160 meter - This high antenna require a large ground composed by 40 radials. It's not very handy expecially in windy situations but is very powerfull in pile-ups. In italian

Helical loop antenna for 20 meters - A Helical Loop Antenna for the 20-meters Band

VK5AH -HF 4 Bander dipole  ^pop - 80 - 40 - 20 - 15 meters dipole antenna

The Sperrtopf antenna for 2 meter band - By ON4CFC Pascal, describe how to build a Sperrtopf or Sleeve antenna for the 144 Mhz, PDF File by antennex

40m/80m Portable antenna  ^pop - Portable antenna for 40 and 80 meter

Antenna for 40 / 80 meters - A dipole antenna that can be used in 40 and 80 meter band in portuguese

Morgain Antenna for 40/80 - Simple and cheap antenna for 40/80 meter band

N4JTE Antennas Priority listing - Just Too Easy 40 meter reversible quads in two an three element version

80 meter frame antenna - This projects was developed as a result of experiments to become QRV on 80 meters, again, using the little balcony by SM0VPO

20 meters Cage Dipole - Cage Dipole is based on the fact that a wireframe does emulate a tubing of the same diameter, supposed that the wires in the frame are close enough to resemble a solid surface.

De EH DipooleAntenne - EH Antennas, and some PDF file with plans to build an eh antenna, Calculate eh, 20 40 80 meters bands

Transmitting Line Condition vs. SWR Table - One another useful Table for the HAM's practice.

Antenna Cable Loss and SWR - Calculate Cable Loss from SWR and reverse. Text file with only two simply formulas

Actual Antenna SWR - Easy for calculate formula which could be a wake-up call for you. The SWR value at the input of antenna cable is not a actual SWR of your favorite antenna.

W4JOH Cobra Antenna - The original Cobra antenna, is a multiband 160 or 80 to 10 meter, designed by W4JOH is built using standard insulated wire of about 14 gauge and fed with 450 ohm ladder line down to the shack into a tuner.

EC2APU multiband wire antenna - Wire antenna for 10-15-20-40-80 meters band, with many drawings and description in spanish

4 element yagi for 20 meters - Pictures and plans of a 4 elements yagi beam antenna for 14 Mhz

5 element yagi for 20 Meter band - Picture and construction details of a 5 element 20 meter monobander

KB3KAI Portable Roll-Up 2-Meter J-Pole Antenna - The twin-lead portable rollup J-Pole antenna, assembled and ready for deployment

2 Meters Bicycle Antenna  ^pop - 2 Meter Antenna for Bicycle Mobile Operation

Coax Cable loss and SWR calculator - This small window application will calculate Coax Cable loss from SWR and SWR from Cable Loss

Meter - This meter scale drawing program is designed to have a computer do the hard work in making a precision scale for a d'Arsonval analog meter. The resulting scales will typically be nicer-looking than those found on many commercial meters.

G3YXM 500 W PA - 40-80-160 meter band linear amplifier

SUPERVOX - S 300 - AM CW SSB linear amplifier for 160 80 and 40 meter band

50 MHz GS35b Power Amplifier - OZ1DPR six meter power amplifier using the russian VHF triode GS35b