The HDX-689 is rated for 60 sq ft not 50 sq ft.
It has twice the capacity of the HDX-589.
Bob
K6UJ
On Sep 29, 2010, at 2:43 PM, Jim Thomson wrote:
> Date: Wed, 29 Sep 2010 13:22:39 -0400
> From: Alan NV8A <nv8a@charter.net>
> Subject: Re: [TowerTalk] Motorized UST tower... very smooth and dead
> quiet!
>
> On 09/29/10 07:35 am, Jim Thomson wrote:
>
>> The UST HDX-689 is still sitting in the driveway, blocked up, horizontal.
>> I have a cracked flange on one of the
>> drum bearings, that will require a gear puller to get the large chain
>> sprocket off 1st. Then both drum bearings
>> will be replaced at the same time.
>
> <snip>
>
> Can't find anything on the UST Web site about an HDX-689 -- only a 589.
> Is yours an older model? A custom model?
>
> 73
>
> Alan NV8A
>
> ## Top section is #6 [18"]...and bottom section is #10 [37.125"] The
> UST numbering scheme is the 1st digit is
> the number of the top section. Remaining digits is the max height. UST
> also makes a 589, and also a 489.
>
> ##They also make a 5106 [ 106' tall, identical to mine, but with a 6th
> section, that's 15" across]. They also
> make a 572/672/772. The 772 is like mine...minus the top section. You
> could park a dump truck on a 772.
>
> ## the 589 is rated for 30 sq ft. The 689 is rated for 50 sq ft. The 772
> would be way more than 50 sq ft. [70 mph]
> Anyting with a bottom section #10 is big $$, and a lot heavier.[1006 lbs for
> bottom section #10]
>
> ## 689 weighs 3250 lbs. 589 is abt 2440 lbs. Dunno why a lot of
> models they make are not in the catalog/web site.
> Texas Towers had the 689/5106 models listed on their site, but that was a
> while back.
>
> Jim VE7RF
>
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