W8IO roof tower

W8IO Rooftowers LLC - Heavy Duty 4.5 foot Ham Roof Tower

(updated 10 Oct 2023)

IO-45HD Ham Roof Tower        

Specifications IO-45HD Competitor's Tower

Tower Height 4.5 feet (54 inches) 4.5 feet (54 inches)
Shipping Weight 39 lbs. 17 lbs.
Base Width (to outer edge of leg) 25 inches 24 inches
Base Width (to outer edge of foot) 29 inches 26.75 inches
Max. Antenna Wind Area at tower top 13 sq. ft. at 80 mph 10.2 sq. ft. at 85 mph
Max. Antenna + Rotor + Mast weight 200 lbs. 125 lbs.
Tower Top Width 5 inches 5 inches
Rotor Plate location from Top 34.5 inches (bottom shelf) 34.75 inches
Maximum Mast Diameter 2.5 inches 2.375 inches
Maximum Mast Length 7 feet (84 inches) 5 feet (60 inches)
Rotor Mounting Options Hy-Gain or Yaesu
Hy-Gain and Yaesu
Thrust Bearing Mounting Options Yaesu GS-065  TB-25 (optional)
Fixed (non-rotating) Mast Option UMB-1
MC-10 (optional)
Leg and shelf material 6061-T6 aluminum (3/16" thick x 2" angle) 6061-T6 aluminum (1/8" thick x 1.5" angle)
Foot material 6061-T6 aluminum (1/4" thick x 2" angle) 6061-T6 aluminum (1.5" x 2" angle)
Rotor Shelf material6061-T6 aluminum (3/16" thick x 2" angle)6061-T6 aluminum (1/8" thick x 1.5" angle)
X-Brace material 6061-T6511 aluminum (1/8" x 2" flat) 6061-T6511 aluminum (1/8" x 3/4" flat)
Assembly Hardware 5/16"-18  18-8 stainless steel (32) 1/4"-20 18-8 stainless steel
Foot to Leg hardware 3/8"-16  18-8 stainless steel (4) 3/8"-16  18-8 stainless steel
Lockwashers/nylon locknutsYes
nylon locknuts
Holes Deburred Yes ?
Part Edges Deburred Yes ?
Climbable Yes - with tower climbing belt or harness No

4.5 foot roof tower4.5 foot roof tower

          Model IO-45HD

The IO-45HD is perfect for moderate sized HF beam antennas such as the Hy-Gain Explorer-14, KIO 5-band Hex Beam, Traffie Tech HX-5Bi, DX-Engineering HEXX beam, K4HEX hexagonal beam ...

Assembly and Installation Manual for IO-45HD (4.5 foot) roof tower

IO-45HD Manual (2023 version)

Check out the reviews of the IO-45HD or add your review on eHam.com

Model IO-45HD Rooftower calculations

Shipping Details:
Weight: 39 lb.
Package Size: 6.5" OD tube x 60" length
Typical shipping costs: Bristol, CT $60,  Glenmoore, PA $53,  Raleigh, NC $53,  Liberty, MO $53,  Arvada, CO $62,  Moses Lake, WA $84,  Sacramento, CA $96

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contact Roger: email to 

rgcox2 (at) gmail.com

Roger Cox, W8IO (ex-WB0DGF) - Spring Lake, MI 49456