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Page updated Dec 20, 2017 

My 160M Steerable Array Antenna Project was put to use for the CQ WW SSB contest this past October with great results.  "The Dam Thing Worked'!!  See below.

 

Hello from Ridgeway/Crystal Beach, Ontario, which is 15 miles (20km) south of Niagara Falls, and 7 miles (10km) west of Fort Erie, (Buffalo, NY) on the North Shore of Lake Erie. (South Coast of Canada!!)

The Shack is in the loft area of the garage.  I remote with Flex Maestro most of the time from the family room.

 

Now Semi Retired

Licensed since 1981, and have Advanced Privileges; 

Certified Industy Canada Examiner for Amateur Radio,

Certiifed Electrical Technolgist (CET);  Certified Master Electrician (ME)

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Equipment Details

Radio's on HF;  Flex 6500 c/w Maestro;  Flex 5000

Did you know that Flex 6000 series radio's have CESSB?  CESSB=Controlled Envelope Single Sideband.

Flex SmartSDR has CESSB. What that means you get about the equivalent of an extra 2.51db output on SSB.  That is almost like getting 200 PEP out of your 100 watt radio.

CESSB details can be found in the ARRL QEX pages.

http://www.arrl.org/files/file/QEX_Next_Issue/2014/Nov-Dec_2014/Hershberger_QEX_11_14.pdf

 

Antennas;

SteppIR c/w SDA 100 Controller;Alpha Spid Rotor & Controller, Not up at this new location yet.

Two 1/4 Wave 160m Counterpoise Verticals using a K2AV Folded Counterpoise Design

80m Full Wave Horizontal Loop

AV5, which is a 5 Band Verticle Antenna (80, 40, 20, 15, 10). located on the west property area.

Meters;

LP100A Wattmeter, LP500 Station Monitor(#107), will be using the PalStar HF Auto Tunner once I get 240V to shack for amplifier, Siglent SSA-3021X w Sweep Generator, Siglent SDS-1202X-E.

Amplifiers;

Kenwood 922A Amp; Ameritron ALS500; not using either one right now.  Need to route 240V to shack still.

Power Supplies;

Alinco DM-330MV Power Supplys only!!

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Steerable Vertical Wire Arrays for my 2-160M End Fired "Folded Counterpoise"Antenna's 

Why use Steerable Antenna's?

COST is ver low (<$100 for antennas), (<$400 Switch Box, which is home built).

Small City lot.

I can rotate into 8 different positions. See Map below.

Possible gain factor of around 3dB.

DXing off the NA continent.

This set-up is for both Transmit and Receive. No need for beverages or other listening antennas.

I listen to lots of conversations out there about requiring multile ground radials that are hundreds of feet long (TRUE), beverage antennas that are 100-1000 feet long (TRUE), and that once laid down you don't move them.  So that means more wire to point where you want to recieve from.  

Why use Folded Counterpoise Antennas (FCP)?

To prove that this style of antenna works with one (1) elevated ground wire, not multiple ones ($$$ saved).

Simple to install (need a tall tree or tower of at least 60' in height.

The two 160M verticles are inverted L's, however, both antenna ends are going up higher into other trees. So I have about 50' vertical riser with 60' horizontal riser into another tree, with the about 20' tails tapering back down to the ground.  Both of the 160M antennas are installed the same way.

The two antennas are spaced 165' (51M) apart.

(See below details on FCP by K2AV)

The Steering Box (Switching Coax Delay Lines).

The original design is based on what is in ARRL Compendium #2 "Steerable Arrays for the Low Bands". The therory is to be able to switches in and out at 45 and 90 degrees using coax as the Delay Line.  Thus giving you a full 360 Deg. coverage (at 45 Deg.intervals).

However, the concept is right the actual results were not. I had to rework the coax lengths in order to get the steering angles to work the coax that was cut for 90 (165') was way out.  I removed it totally.  The coax that was cut for 45 degrees (96') worked for the 90degree position, therefore,  I had to cut a new coax for the 45degree position, and it was 48' long.  The final rotated positions ended up being 40degree spacing around the clock.  See MAP below for final antenna steering results.  These position were confirmed during the October 2017 CQWW SSB contest, working into the West Coast of NA, Hawaii, and into west coast of Europe.

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Here is the Design of the 160M FCP by K2AV  that I am using.

Amidon Associated Balun Kit number for the FCP design above is "AB300A-10"

this kit includes wire, HV Teflon wire sleeve, and T300A-2 Toroid.  Kit is good for 1KW.

   

FCP Kit                                    FCP in PVC Box                          FCP c/w LA and CT                 CT (Current Transformer) 

On wooden post 8' above ground, w 1 ground radial underneath.  Current Transformer for feedback to scope in shack.

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My 160M Steering Array System Layout (Transmit and Receive off same Antennas)

 Steering Box (SB) Design

RF Control Schematic,  2 Inputs, 3 outputs

Radio 2 input was so that I can bring a second antenna directly back into the radio giving more FLEXability.

 

Steering Box 12VDC Control Schematic

Steering Box Layout (SB)

 

Completly Tested.  See test results below.             

Steering Box HF Spectrum Test Results

 

Sweep was done on SB with two 50ohm dummy loads connected, simulating the two 160M antennas.  First sweep (10Mhz +/- 9.3Mhz), was to see the range of the switch box.  The second sweep (2Mhz +/- 2.3Mhz) was right where I will be operating the SB. (As Designed!!)

  RF test results into twin dummy loads

     

  Antenna 1 port; 9.63Win, 5Wout                       Antenna 2 port; 9.73Win, 4.9Wout

The Power Divider circuit is working great!!

 Test results for the two FCP 160M Vertical antennas.  Spacing is 168' (52M) apart.

 

Antenna 1; Z=55.8, X=5.6, R=55.5; SWR=1.16 @1.932Mhz   Antenna 2; Z=42.2, X=4.3, R=42.0, SWR=1.22 @ 1.927Mhz

Scope feedbacks from the CT's located at both antenna bases. (Coloured traces are SSB signals).

    

In Phase                                                                                         45 Degree Shift

   

90 Degree Shift                                                                               180 Degree Shift

Antenna's are arranged east/west.  With antenna 1 being the west antenna which means it covers the southern side, and the East antenna 2 covers the Northern side.

My Steering MAP

Yellow lines were the Design Bearings;

End result as follows;  Red lines are when Antenna 1 (West) is Leading; Blue Lines are for when Antenna 2 (East) Leads.

The XXX in the boxes are position of toggle switches for which coax gets switched in and out for the delay on TX/RX.

These positions were measured by the feedback signals from the two CT's located at the antenna bases.  See scope pictures above.

End of 2017 Project

===================================================================================================

 

First real Contest that I ever entered.  CQ WW SSB in October 2014. 

Special thanks for this Certificate goes out to Peter Va3WET, and Henry Va3OV

109 VA3KGS 2014 MULTI-ONE LP 317,612  454  82  211  44.3 VA3KGS VA3WET VA3OV

 

My Second Contest

#27 World; #6 North America; #2 Canada......47,774; 210; 44; 5

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See Niagara Falls Live !! http://www.earthcam.com/canada/niagarafalls

I am a member of the Niagara Peninsula Amateur Radio Club, Come visit our website athttp://www.nparc.on.ca/content/home.

Other call signs used are; Ve3MWS, Va3AC (New Sept 2017)

Thanks for visiting, Kevin

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8525837 Last modified: 2017-12-21 01:51:40, 16535 bytes

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