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Thanks Steve ,
Lets all hope that we have learned something from this I
most certainly have ,but please read my response to the "K" factor data being in
the published stand alone rotor brochure
Mike VE7AVM
K7LXC@aol.com wrote:
> In a message dated 99-02-28 15:25:55 EST, mholley@quik.com writes:
>
> > My concern is that at the time of purchase of the rotor from a authorized
> > YAESU dealer it was clearly explained the make and size of the single mono
> > band antenna which a rotor was required . (HAM-PRO H240-4)
> > The only concern the dealers representative had was the, total wind serf
> > ace area of the antenna, which is 8.27 sq ft. He then advised that as the
> > G-800 had a maximum antenna surface area limit of 2m sq( 21 sq ft) and
> > would be more than adequate to safely handle the antenna in question .
> > At no time was any reference to the maximum "K" factor requirements which
> > had it been I would have selected the G-1000 series .
>
> This is an instance of the salesperson not knowing "everything".
>
> In the old days, the governing spec for rotator capacity was "square
> feet". About 10 years ago, Hy-Gain instituted their Effective Moment (EM) spec
> which is the turning radius times weight. Soon Yaesu followed suit with their
> "K Factor". It's an improvement but obviously not everyone is familiar with
> it.
>
> BTW, you can see from your own situation that square footage alone
> doesn't work.
>
> The spec 'error' was made by the salesperson; not by the manufacturer
> (since they publish the ratings) or the buyer (since he didn't really know
> either). I would take my complaint back to where you purchased it - they
> should be interested in making it good for you.
>
> > Referring to the YAESU Antenna rotor specification brochure it is noted
> > that NO reference is made what so ever to "K" factor considerations for
> > any of the published rotors offered .
>
> Huh? I don't have the Yaesu general catalog to look at but the
> standalone rotator brochure certainly has the K Factor as one of the specs.
This above para that I am confused about ,I have YAESU stand alone brochure
which
I got just prior to the purchase of the G-800SDX (1994) which gives the
following
data:-
Power consumption : 100VA
450 deg rotation time : (S)55s
(SDX)43-93s)
Rotation torque:
600-1100kg-cm
(43-79 ft lbs
Stationary torque: 4000
kg-cm (288ft-lbs)
Max. vertical load : 200
kg (440 lbs)
Max.ant. surface area : 2 m sq.
mast diameter: 38-63
mm (1 1/2-2 1/2 in.)
Do I assume that the "K" factor is a product of one or a number of the above
specifications ?
Mike VE7AVM
>
> A mistake was made and some damage done. Hopefully we've all learned
> something and it'll get taken care of to everyone's satisfaction.
>
> There is one moral though: Subscribe to TowerTalk to help stay out of
> trouble!
>
> Cheers, Steve K7LXC
> Tower Tech
> Champion Radio Products
>
> --
> FAQ on WWW: http://www.contesting.com/towertalkfaq.html
> Submissions: towertalk@contesting.com
> Administrative requests: towertalk-REQUEST@contesting.com
> Problems: owner-towertalk@contesting.com
> Search: http://www.contesting.com/km9p/search.htm
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Thanks Steve ,
<br>
Lets all hope that we have learned something from this I most certainly
have ,but please read my response to the "K" factor data being in the published
stand alone rotor brochure
<br>
Mike VE7AVM
<p>K7LXC@aol.com wrote:
<blockquote TYPE=CITE>In a message dated 99-02-28 15:25:55 EST, mholley@quik.com
writes:
<p>> My concern is that at the time of purchase of the rotor from
a authorized
<br>> YAESU dealer it was clearly explained the make and size of
the single mono
<br>> band antenna which a rotor was required . (HAM-PRO H240-4)
<br>> The only concern the dealers representative had
was the, total wind serf
<br>> ace area of the antenna, which is 8.27 sq ft. He then advised
that as the
<br>> G-800 had a maximum antenna surface area limit of 2m sq( 21
sq ft) and
<br>> would be more than adequate to safely handle the antenna in
question .
<br>> At no time was any reference to the maximum "K" factor
requirements which
<br>> had it been I would have selected the G-1000 series .
<p> This is an instance of the salesperson
not knowing "everything".
<p> In the old days, the governing spec for rotator
capacity was "square
<br>feet". About 10 years ago, Hy-Gain instituted their Effective Moment
(EM) spec
<br>which is the turning radius times weight. Soon Yaesu followed suit
with their
<br>"K Factor". It's an improvement but obviously not everyone is familiar
with
<br>it.
<p> BTW, you can see from your own situation that
square footage alone
<br>doesn't work.
<p> The spec 'error' was made by the salesperson;
not by the manufacturer
<br>(since they publish the ratings) or the buyer (since he didn't really
know
<br>either). I would take my complaint back to where you purchased it -
they
<br>should be interested in making it good for you.
<p>> Referring to the YAESU Antenna rotor specification brochure
it is noted
<br>> that NO reference is made what so ever to "K" factor considerations
for
<br>> any of the published rotors offered .
<p> Huh? I don't have the Yaesu general catalog
to look at but the
<br>standalone rotator brochure certainly has the K Factor as one of the
specs.</blockquote>
<font color="#FF0000">This above para that I am confused about ,I have
YAESU stand alone brochure which I got just prior to the purchase of the
G-800SDX (1994) which gives the following data:-</font>
<br><font
color="#FF0000">
Power consumption
:
100VA</font>
<br><font
color="#FF0000">
450 deg rotation time
:
(S)55s (SDX)43-93s)</font>
<br><font
color="#FF0000">
Rotation
torque:
600-1100kg-cm (43-79 ft lbs</font>
<br><font
color="#FF0000">
Stationary
torque:
4000 kg-cm (288ft-lbs)</font>
<br><font
color="#FF0000">
Max. vertical load
:
200
kg
(440 lbs)</font>
<br><font
color="#FF0000">
Max.ant. surface area
:
2 m sq.</font>
<br><font
color="#FF0000">
mast
diameter:
38-63 mm (1 1/2-2 1/2 in.)</font>
<br><font color="#FF0000">Do I assume that the "K" factor is a product
of one or a number of the above specifications ?</font>
<br><font
color="#FF0000">
Mike VE7AVM</font>
<blockquote TYPE=CITE>
<br> A mistake was made and some damage done.
Hopefully we've all learned
<br>something and it'll get taken care of to everyone's satisfaction.
<p> There is one moral though: Subscribe
to TowerTalk to help stay out of
<br>trouble!
<p>Cheers, Steve K7LXC
<br>Tower Tech
<br>Champion Radio Products
<p>--
<br>FAQ on
WWW:
<a
href="http://www.contesting.com/towertalkfaq.html";>http://www.contesting.com/towertalkfaq.html</a>
<br>Submissions:
towertalk@contesting.com
<br>Administrative requests: towertalk-REQUEST@contesting.com
<br>Problems:
owner-towertalk@contesting.com
<br>Search:
<a
href="http://www.contesting.com/km9p/search.htm";>http://www.contesting.com/km9p/search.htm</a></blockquote>
</html>
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