KMA Antennas -- 6 Meter Antennas

6 Meter Antennas
KMA5054 | KMA Big-Six

KMA5054 Antenna Specifications (6 Meter Log Periodic)

Boom length - 6 feet
No. of elements - 5
Longest element length - 10.9 feet
Materials - 6061 Aluminum & stainless hardware
Gain - 7.5 dBi
Front : Back - 30 dB
SWR - less than 1.5 : 1.0, measured over entire band
Optional End mount - Antenna may be end-mounted with optional mount

Full band coverage with NO tuning or adjusting --- Work ssb or repeaters with the same antenna. KMA5054

Why a log periodic that covers only 6 meters? One of my blind ham friends had his homebrew, 6 meter yagi damaged in a storm. The installation would be easier for his non-ham brother if no adjustments were required, so I designed this log periodic. I assembled and tested this antenna during Field Day and the following week. The gain figures were verified by on-the-air tests with a local (30 miles away) station. We used a 6 meter dipole as a reference, and the figures closely matched those predicted by EZNEC. I also tested this antenna mounted on a 45 degree angle instead of horizontal. This did not seem to degrade the horizontal signal much at the receiving test station and the signal into a repeater (100 miles) was pretty good. I had never tried this before, but it worked quite well.

Note: The KMA5054 also shows good gain on 2 Meters.

KMA Big-Six

This is the big brother of the KMA5054. Excellent gain and front to back ratio. No adjustments necessary for swr less than 1.5 over the entire band.

Boom Length - 15 feet KMA Big-Six
Number of elements - 6
Weight - 12.5 lbs
Turning radius - 9 feet
Wind area - 2.4 sq. feet
Gain - 9.2 dBi
F:B - 30 dB
swr - < 1.5 : 1.0