Back a Few Years Ago I Bought Some Aluminum pipes & Antenna Parts From a Hamfest, I Think It Was The Peaton Ham Fest.
Shortly After, I Built This 9 Element Monster From a QST Article, I Never Had The Time To Put It Up And Install It.
About 5 Years Ago I Moved To this QTH, Put Up One 30 Foot Tower But Could Not Install Any Antennas On It Because I Found Out That I No Longer Could Climb Towers As I Use To In My Younger Day’s.
It Was Winter And Cold And I needed To Get On 2 Meters., But The Only repeater That I Can Hit Was KA9QJG 2 Meter Repeater.
I needed To Put The Antenna Which Was At 5 Feet Up On The Tower, So I Called On a Good Friend Bill KC9MDS AKA DR. Bill.
He Came That Winter 5 Years Ago And Installed The 2 Meter/ 70 CM Dual Band Antenna On The Top Of The Tower, We Tried To Put Up My 6 Meter Yagi But It Was So Cold I Thought That DR. Bill was Gonna Be So Stiff From The Cold Temps That He Will Get Stuck On My Tower And I Was Not Having That (LOL) So We Called It Off.
This Moth I Was Thinking That It Is a Shame For Me To Have a Tower And Not Have Yagi’s On It, So I Called On My Fiend DR. Bill, We Talked About Putting Up 3 Yagi’s Up On The Tower, One For 2 Meters One For 6 Meters And an HF Tribander.
On Saturday The 16th Of October 2021 Bill Came And Installed The 2 Meter And the 6 Meter Yagi’s, There Was No Room To Put Up The HF Tribander.
About 3 PM DR. Bill Was Tired So We Halted Work Till Next Monday Installing The Rotator And Tyding Up The Cables ETC.
I Needed To Test The Antennas So I Called My Other Good Friend DON KA9QJG, The Antennas On Both Bands Performed As Expected.
Later On, I Heard DR. Bill & DON Talking About The Antennas, DR. Bill Was Asking If I Designed The 2 Meter Yagi On The MMANA Antenna Modelling Software….. I Told Him That I Did About 4 Or Five Years Ago Getting The Plan From That QST Magazine Article But Promised Him That I Will Do The Design Again Today And Make a Post On It, So Here Is The Software Version Of The 9 Element 2 Meter Yagi, I Hope This Could Encourage New Hams To Start Building Their Own Antennas.
Lengths
| El. Length | Meter | Feet |
| Boom | 3.4 | 11.1549 |
| Reflector | 1.03734 | 3.4034 |
| Driven | 0.99878 | 3.27684 |
| 1st Director | 0.96164 | 3.15500 |
| 2nd Director | 0.93010 | 3.0515092 |
| 3rd Director | 0.93360 | 3.06299213 |
| 4th Director | 0.89505 | 2.936516 |
| 5th Director | 0.85000 | 2.788714 |
| 6th Director | 0.75000 | 2.46063 |
| 7th Director | 0.65000 | 2.132546 |
Spacing
| Reflector To Driven | 0.3586 | 1.1437008 |
| Driven To 1st Director | 0.20000 | 0.656168 |
| 1st Director To 2nd Director | 0.3881 | 1.273294 |
| 2nd Director To 3rd Director | 0.4610 | 1.5124672 |
| 3rd Director To 4th Director | 0.3543 | 1.1624016 |
| 4th Director To 5th Director | 0.6000 | 1.9685 |
| 5th Director To 6th Director | 0.5000 | 1.64042 |
| 6th Director To 7th Director | 0.5000 | 1.64042 |
Material
Boom: 1 Inch Aluminum Pipe
All Elements: #8 AWG Aluminum Wire 0.1285 Diameters in Inches 3.26390 Diameters in mm
Feed Point
75 Ohm Coaxial Cable 42.5 Cm 16.73228 Inches wrapped two times.
And Here Is The Install Photo’s
I Will Add More Photo’s Later.
Thanks, Bill For The Help.
