[TowerTalk] HDBX Version History...

[Kim Elmore]

Maybe... He said it was an HDBX48, though. Have these things bee cranked out by different companies since the beginning? I always assumed that in the beginning, they were exclusively Rohn. Of course, I dunno when the “beginning” was, so maybe by 1968 they were made by everybody...

Kim N5OP

"People that make music together cannot be enemies, at least as long as the music lasts." -- Paul Hindemith

> On Jul 1, 2019, at 6:44 PM, Don Moman VE6JY <ve6jy.1 at gmail.com> wrote:
> 
> The Canadian version by Delhi (now Wade) is similar but has the 5 X
> braces.  Perhaps he has one of those...
> 
>> On Mon, Jul 1, 2019 at 10:47 PM Kim Elmore <cw_de_n5op at sbcglobal.net> wrote:
>> 
>> I recently asked a question about HDBX 48 torque loading. Another
>> towertalkian told me his failed in about 80 MPH winds. He sent me a
>> picture of his failed HDBX 48 (more heavily loaded than mine by a fair
>> bit) that failed. Something I noticed in the picture was that his
>> HDBX48?? had only *five* X-braces per section; I thought it looked odd,
>> so I went out and looked at mine: mine has *six* X-braces per section.
>> He said his was manufactured sometime around 1968-1970 while mine was
>> put up around 1986, so was probably made around that time.
>> 
>> Did Rohn change the design of their BX towers to add another X-brace to
>> each section, or am I seeing things?
>> 
>> Kim N5OP
>> 
>> --
>> 
>> Kim Elmore, Ph.D. (Adj. Assoc. Prof., OU School of Meteorology, CCM, PP
>> SEL/MEL/Glider, N5OP, 2nd Class Radiotelegraph, GROL)
>> 
>> /"In theory there is no difference between theory and practice. But, in
>> practice, there is." //??? Attributed to many people; it???s so true that
>> it
>> doesn???t matter who said it./
>> 
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