(updated 10 Oct 2023)
Due to health
issues of both my wife and me, I will no longer be taking tower orders.
We will, however, supply small replacement parts as necessary.
Model IO-45HD, IO-45 and IO-45LT
Click on the model number for more
See the product reviews on eHam.com
or I can provide additional references on request. Please check out the
QRZ pages for K8DIL,
K2VI and W6RKE for
NEW! YouTube video of IO-45 roof tower assembly and K4KIO Spiderbeam by Cal McKitrick AI6MC.
TOWER KIT DESCRIPTIONS:
include instructions for cutting and drilling all aluminum parts. The
full instructions are downloaded from this web site, and the password
to unlock the instructions is emailed to you on request. The
assembly and installation manual can be downloaded from this web site.
Assembly and mounting hardware are not included.
towers are designed to work with a thrust bearing mounted on the top. I
recommend the Yaesu GS-065, which will handle up to a 2.5 inch diameter
mast. You could also use the Yaesu GS-050 thrust bearing,
this will only allow masts up to 2.0 inches OD.
Rooftowers LLC warrants all its roof-tower products for 90 days after
shipment. If any W8IO Rooftower fails to give the purchaser complete
satisfaction within 90 days of shipment, we will replace any component
of the Rooftower free of charge. W8IO Rooftowers LLC will not be liable
for loss or damage to property or incidental or consequential loss or
expense from property damage due directly or indirectly from the use of
WHO IS W8IO?
Follow this link to find out:
Calculations for the IO-810 roof
Antenna to your Tower", Roger Cox WB0DGF, Ham Radio Magazine, June 1984
Application of Wind-Load Standards to Yagi Antennas: Part 1", Stuart E.
Bonney K5PB, QEX Jan/Feb 1999, pp 46-50
Application of Wind-Load Standards to Yagi Antennas: Part 2", Stuart E.
Bonney K5PB, QEX Mar/Apr 1999, pp 44-49
Antenna Wind Loading as a Function of Height", Frank Javanty
W9JCC, QEX July/August 2001, pp 23-33
Tips" a compilation of many tower tips from various authors
Strengthen your Roof with Collar Ties
The Mathmatics of Rafter
and Collar Ties
Roger: email to
RGCOX2 (at) GMAIL.COM
Roger Cox, W8IO (ex-WB0DGF)
Lake, MI 49456
mirror websites: w8io.com and wb0dgf.com