Tower and Quad Project
Antenna Selected - Lightning Bolt 2
element - 5 band quad
* I have previous positive experience with HyGain HyQuad
* Price - $370 shipped to me - Very affordable compared to yagis
* 5 band coverage
* Light weight (35lbs) - low wind load (6 sq. ft.) - short boom (8 ft.)
* Good gain (7db) and good F/B and F/S ratio
* Low RX noise
* Works good at lower heights than yagis
* Low angle of radiation
* Single feedline for all 5 bands
* Great reviews on eHam.net -
Click HERE
* Quads look cool
Tower selected - Rohn design HDBX
series 48' freestanding
* Very familiar with this style tower from previous experience in CATV business
(20+ installs)
* Competitive pricing ($800 approx.)
* Was able to pickup from dealer at Indy Hamfest ($200 saving on shipping)
* 18 sq. ft. wind load
Rotor selected - Alliance HD-73
* Had this rotor already
* New rotors cost too much
Son Geoff starts dig - very hot August day. | Lots of dirt to haul away. Bought trailer in lieu of wheelbarrow. | At end of day - 4.5 cubic yards removed. Hole is now 5ft x 5ft x 4.5ft deep. |
Build forms for concrete and support tower and legs so legs are suspended in hole. Adjust forms for rain runoff. Shim tower support for perfect tower level. | Check level at least 30 times! Not pictured is rebar cage made of 16 48" rebar rods with none touching any part of tower or legs. | Concrete delivery - 4.5 cu. yards fills hole. Make sure tower stays perfectly level! Trowel smoothe. Concrete sets 4 days. |
My method: 2 workers / 2 climbing belts / no Gin Pole. Haul section up with rope. 2 man lift and set section. Bolt. Very fast assembly. | Last section bolted on. | Install rotor then insert preassembled 10' mast with VHF omni antenna. Run coax and rotor cable down tower. Wait for Quad to arrive. |
Assemble spreaders - Measure/cut wire - Feed through wire guides. Tension wires for 12" bow in spreaders. | Mount Boom/Mast plate. Mount boom. Position boom to 1 side. Ready for 1st element. | Haul elements up tower with rope attached to spreader hub. Insert into proper end of boom. Bolt. Slide boom to other end and repeat for 2nd element. |
Slide boom back to center and rotate boom to level elements. Check all nuts, bolts, clamps. Secure coax feedline on last trip down tower. | Route all cables to shack. Connect and test. |
What a beautiful sight! CQ DX CQ DX |