4 meter

4 meter

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• Mobile Antennas for 10 Meters - Interesting article on mobile antennas by Cebik, W4RNL
  [ Hits: 6644 | Votes: 4 | Rating: 3.5 ]

• 8 Element Quad for 145 Mhz  ^pop - 8 elements quad antenna for 2 meters band, centered on 145 Mhz
  [ Hits: 30211 | Votes: 105 | Rating: 5.81 ]
• A portable 2-element VHF yagi  ^pop - Build a portable VHF yagi antenna for 2 meters. All you need is two rabbit ear antennas from Radio Shack, two CATV baluns, four feet of 3/4 CPVC pipe with one tee.
  [ Hits: 28668 | Votes: 26 | Rating: 7.23 ]
• 13 elements Yagi antenna for 144 MHz - DJ9BV yagi antenna for 2 meters band
  [ Hits: 8897 | Votes: 36 | Rating: 6 ]

• 300 ohm twinlead 40 meter dipole - The N2CKH travel special 300 Ohm ladder line convertable antenna
  [ Hits: 8578 | Votes: 3 | Rating: 5.67 ]

• Switchable Antenna 80/160 meters band - A switchable antenna for 80/160 meters by IK1ZOY. A new version of a 1/4L 80 m. dipole modified for use in 160 m. band. using it's own coaxial cable feeder to wrap a coil.
  [ Hits: 17199 | Votes: 6 | Rating: 5.5 ]

• K3KY's Short Beverage  ^pop - Originally planned as an 80/160 Beverage, this antenna is a terrific performer on 40 and 30 meters
  [ Hits: 25607 | Votes: 8 | Rating: 5.63 ]

• 20m QRP Dipole - Instructions to build a portable dipole for 20 meters
  [ Hits: 16721 | Votes: 6 | Rating: 9.17 ]

• Swiss Quad for 10 and 6 meters - Based on HB9CV, F6ITV decribes how build a swiss quand antenna for 28 and 50 Mhz.
  [ Hits: 21530 | Votes: 22 | Rating: 7.09 ]

• A two dollar helical hf portable antenna - Here is an easily transportable vertical antenna for 20 meters collapsible to 4 feet that costs about $2.00 to make. This was created as a fun project to demonstrate how to enjoy operating HF in the field with a home-made portable antenna without spending a ton of money. Bev AH6NF (YL) made this antenna, tuned and ready to operate in less than one hour
  [ Hits: 22387 | Votes: 14 | Rating: 7.65 ]

• A Magnetic Loop antenna for 7-21 mhz - If you find external wire antennas obtrusive for amateur radio or short wave listening, then this is the antenna for you, is just 1 meter diameter
  [ Hits: 3827 | Votes: 2 | Rating: 5.5 ]
• HF portable antenna - 40 to 6 meters  ^pop - Homemade 40 through 6 meter HF portable multiband antenna, an aluminium antenna construction article, with plan, drawings and photos
  [ Hits: 58912 | Votes: 21 | Rating: 5.57 ]

• Modified Buddipole for 40 to 10 Meters - This is modified version of buddipole antenna, using vertical wires instead of telescopic ends by ks7j
  [ Hits: 6251 | Votes: 7 | Rating: 6.57 ]

• Link Coupled Tuner - Legal Limit Link Coupled Balanced Tuner,for the amateur ham radio HF bands. This Tuner uses plug-in Coils sets for 40, 80, & 160 meters
  [ Hits: 3912 | Votes: 2 | Rating: 7 ]

• 7 MHz Vertical antenna  ^pop - 7 MHz Vertical antenna for ham radio band of 40 meter text in spanish and english
  [ Hits: 34599 | Votes: 98 | Rating: 8.43 ]
• IK-STIC 2 vertical multiband antenna - The IK-STIC 2 is a vertical, all band, antenna that is over 25 feet tall yet weighs under 5 pounds. Based on a telescopic pipe or a fiberglass fishing pole, using a tuner it can easily cover the amateur radio HF bands from 40 - 10 Meters
  [ Hits: 4845 | Votes: 6 | Rating: 5.17 ]

• 40m Short Antenna  ^pop - GM4JMU shortened dipole for 40 meters band
  [ Hits: 27705 | Votes: 32 | Rating: 5 ]
• NorCal Doublet Antenna - A simple antenna that can be erected very fast, only need one center support, and do not take up much storage room. Works from 40 to 10 meters band
  [ Hits: 2813 | Votes: 3 | Rating: 10 ]

• Yaesu FT-100 specifications - The Yaesu FT-100 is a miniature mobile transceiver that provides coverage of the 160 to 6 meter bands plus the 144 MHz and 430 MHz bands
  [ Hits: 1842 | Votes: 0 | Rating: 0 ]

• Cobracom - Oscilloscope, Realtime spectrum analyzer, Impedance meter, RLC bridge and signal generator for Windows. Is a Windows application that converts your PC into a powerful dual-trace signal analyzer (oscilloscope, FFT etc...) . Uses your PC sound card as an Analog-to-Digital a Converter to digitize any input waveform and as Digital-to-analog Converter for the signal generator. True 24 bit adc/dac 48K/96k/192k sampes/sec.
  [ Hits: 21552 | Votes: 13 | Rating: 6.23 ]

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