W8IO roof tower

W8IO Rooftowers LLC - 4.5 foot Light - Duty Ham Roof Tower

(updated 10 Oct 2023)

IO-45LT Ham Roof Tower       

Specifications IO-45LT Competitor's Tower

Tower Height 4.5 feet (54 inches) 4.5 feet (54 inches)
Shipping Weight 20 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 7 sq. ft. at 80 mph 10.2 sq. ft. at 85 mph
Max. Antenna + Rotor + Mast weight 125 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 2.0 inches 2.375 inches
Maximum Mast Length 5 feet (60 inches) 5 feet (60 inches)
Rotor Mounting Options Hy-Gain or Yaesu
Hy-Gain and Yaesu
Thrust Bearing Mounting Options Yaesu GS-065 or GS-050
TB-25 (optional)
Fixed (non-rotating) Mast Option UMB-1
MC-10 (optional)
Leg and shelf material 6061-T6 aluminum (1/8" thick x 1.5" angle) 6061-T6 aluminum (1/8" thick x 1.5" angle)
Foot material 6061-T6 aluminum (3/16" thick x 2" angle) 6061-T6 aluminum (1.5" x 2" angle)
X-Brace material 6061-T6511 aluminum (1/8" x 1" flat) 6061-T6511 aluminum (1/8" x 3/4" flat)
Assembly Hardware 1/4"-20  18-8 stainless steel 1/4"-20 18-8 stainless steel
Foot to Leg hardware 5/16"-18  18-8 stainless steel 3/8"-16  18-8 stainless steel
Holes Deburred Yes ?
Part Edges Deburred Yes ?
Climbable No No

4.5 foot roof tower 4.5 foot roof tower

          Model IO-45LT                                    IO-45LT

The IO-45LT is perfect for small sized HF beam antennas such as the Hy-Gain TH3MK4, TH2MK3, TH3JR, Mosley CL-33M, CL-33MWARC, TA-33M, TA-33MWARC, TA-34XL, KIO 5-band Hex Beam, DX-Engineering HEXX beam, K4HEX hexagonal beam ...

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

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

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contact Roger: email to 

rgcox2 (at) gmail.com

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