Antennas

 

Our antenna arrays are designed and built by W8AEF, Paul Playford.

 

 

TX5C ANTENNA INVENTORY:

 

1

 

160M cw balloon vertical

1

 

160M cw top loaded vertical

 

 

 

1

 

80M cw 2 element phased verticals

1

 

75M ssb 2 element phased verticals

1

 

75M ssb dipole

 

 

 

1

 

40M cw 4 Square phased array

1

 

40M ssb 2 element yagi at 40'  DON'T know about this one. SSB will have either two element vertical or dipole.

 

 

 

1

 

40, 30, 20, 17, 15, 12, 10 & 6M cw 3 element SteppIR yagi at 40'

1

 

20, 17, 15, 12, 10 & 6M ssb 2 element SteppIR yagi at 40'

1

 

40, 30, 20, 17, 15, 12, 10 & 6M ssb SteppIR vertical

1

 

40, 30, 20, 17, 15, 12, 10 & 6M cw SteppIR vertical

 

 

 

1

 

30M cw 4 element parasitic vertical array

 

 

 

1

 

20M SSB 2 element SVDA

1

 

20M cw 2 element SVDA

 

 

 

1

 

17M ssb 2 element SVDA

1

 

17M cw 2 element SVDA

 

 

 

1

 

15M ssb 2 element SVDA

1

 

15M cw 2 element SVDA

 

 

 

1

 

12M ssb 2 element SVDA

1

 

12M cw 2 element SVDA

 

 

 

1

 

10M ssb 2 element SVDA

1

 

10M cw 2 element SVDA

 

 

 

1

 

6M 4 element yagi

 

 

 

2

 

Beverage antennas for 160m

1

 

K9AY loop RX antenna

1

 

17-12 A3WS

1

 

10-15-20 A3S

1

 

80-6 Butternut Vertical

 

 

The photo shows the 10m SVDA.  It doesn't quite work as EZNEC predicted. Dimensions are good and the forward gain is 2 dBd or between 4.2 and 4.8 dBi, depending on whose translation you follow.  EZNEC predicts 4.5 dBi (over desert) so it's looking good.  EZNEC predicts front to back of 8 dB, I measure 22 dB.  WOW!

For measuring I use a signal generator with a calibrated attenuater fed to my Hygain Hytower that is about 100 feet away and in line with the SVDA. For observing level I am using FSM software (available on the internet) to read the level of the signal my IC-756PROII sees.  I make a change to the antenna and adjust the output of the signal generator to get the same reading on FSM and read the difference in generated level for the results.

de Paul, W8AEF

 

 

20 Meter SVDA

 

30 Meter 4 Square

 

Force 12 220 SVD-DX

 

 

17m cw antenna

 

 

80m array

 

 

160m top loaded. Vertical portion is 60 feet and the 4 top hats are 46 feet long. The ground plane consists of 4 132 foot radials.

 

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