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(updated 10 Oct 2023)
IO-815HD
Ham Roof
Tower
| Specifications | IO-815HD | Closest Competitor's Tower | Total Height (feet) | Height above Tower (feet) | Max. Antenna Area at 80 mph (sq. ft.) | Recommended Mast |
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| 8 | 0 | 15 | AL 2"OD .15w | ||||
| Tower Height | 8 feet (96 inches) | 9 feet (108 inches) | 8.5 | 0.5 | 15 | AL 2"OD .15w | |
| Base Width | 32 inches | 36 inches | 9 | 1 | 13.3 | AL 2"OD .15w | |
| Tower Weight | 70 lb. | 54 lb. | 9.5 | 1.5 | 12.6 | AL 2"OD .15w | |
| Max. Antenna Wind Area at tower top | 15 sq. ft. at 80 mph, 90% within 1 ft of tower top | 23 sq. ft. at 85 mph | 10 | 2 | 12 | AL 2"OD .15w | |
| Max. Antenna + Rotor + Mast Weight | 250 lb. | 120 lb. | 10.5 | 2.5 | 11.4 | AL 2"OD .15w | |
| Tower Top Width | 5 inches | 5 inches | 11 | 3 | 10.9 | AL 2"OD .15w | |
| Rotor Plate location from Top | 64.5 inches | 34.75 inches | 11.5 | 3.5 | 10.4 | GS 2"OD .12w | |
| Rotor Mounting Options | Hy-Gain or Yaesu |
Hy-Gain and Yaesu | 12 | 4 | 10 | GS 2"OD .12w | |
| Thrust Bearing (recommended, +$70) | Yaesu GS-065 |
recommended | 12.5 | 4.5 | 9.6 | GS 2"OD .12w | |
| Maximum Mast Diameter | 2.5 inches | 2.375 inches | 13 | 5 | 9.2 | GS 2"OD .12w | |
| Mast (recommended, not included) | 2"
or 2.5" OD x 10 foot galvanized steel Texcom Steel masts or US Tower M10 |
9 feet long max. | 13.5 | 5.5 | 8.9 | GS 2"OD .12w | |
| Leg material | 6061-T6 aluminum (1/4" thick x 2" angle) | 6061-T6
aluminum (1/4" thick x 2" angle) | 14 | 6 | 8.6 | GS 2"OD .12w | |
| Shelf Material | 6061-T6 aluminum (3/16" thick x 2" angle) | 6061-T6
aluminum (1/8" thick x 1.5" angle) | 14.5 | 6.5 | 8.3 | High Str. GS 2"OD .12w |
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| Rotor Shelf Material | 6061-T6 aluminum (1/4" thick x 2" angle) | 6061-T6
aluminum (1/8" thick x 1.5" angle) | 15 | 7 | 8 | High Str. GS 2"OD .12w | |
| Foot material | 6061-T6 aluminum (1/4" thick x 2" angle) | 6061-T6
aluminum (1.5" x 2" angle) | |||||
| X-Brace and V-Brace material | 6061-T6511 aluminum (3/16" x 2" flat) | 6061-T6511
aluminum (1/8" x 1" flat) | |||||
| Assembly Hardware | 5/16"-18 18-8 stainless steel | 1/4"-20 18-8 stainless steel | |||||
| Foot to Leg hardware | 3/8"-16 18-8 stainless steel | 3/8"-16 18-8 stainless steel | |||||
| Lockwashers/nylon locknuts | Yes | nylon locknuts | |||||
| Holes Deburred | Yes | ? | |||||
| Part Edges Deburred | Yes | ? | |||||
| Climbable | Yes - with tower climbing belt or harness | No | |||||
| Tower fully assembled before shipment | Yes | No |
Model IO-815HD
contact Roger: email to
rgcox2 (at) gmail.com
Roger Cox, W8IO (ex-WB0DGF) - Spring Lake, MI 49456