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G5RV

 

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The following scans are for a G5RV antenna. Measurements were taken from my shack where the radio is connected and at the 450 ohm feed point.

Antenna: 103 ft G5RV at 32 feet, with a 32 ft 450 ohm window line
Balun: 1:1 current, air core coax (scan)
Feed: 40 ft RG/8u, 23 ft RG/8x

HF scan - 0 to 22 MHz (This needs to re-scanned for 1.8 to 30 MHz, and up the SWR x coordinate to 10.0)

 

10 meter scan

15 meter scan

20 meter scan

40 meter scan

80 meter scan

 

450 ohm feed point - Setup

40 - 10 meter scan

What a mess.  Red line - the 40 meter dip is at 7.6 MHz, the 20 meter dip is at 14.05 MHz, the 15 meter dip is at 22.8 MHz, and the 10 meter dip is at 27 MHz.  The SWR at 7.2 is 11, 14.2 is 3.4, 21.2 is 6.87, and 28.3 is at 2.7.

If you have any graphs that could be added to this site please send them along.  I'll post and credit your information.

  Last update: 03/03/2009 08:39:46 AM
  ne8r@antennagraphs.com (replace the "at" in the address)