[600MRG] Some advice needed...as usual

[William E. Isakson]

Ken, get a NEMA 4X enclosure from your electrical supply house.  NEMA 4X is
watertight.   NEMA 4X is plastic.  You can get NEMA 4 which is metal but
much more expensive. NEMA 1 is not at all water resistant so don't use
that.  These things all come in various sizes.  The electrical guy can show
you.   There is also NEMA 3R which is useful for these situations and much
cheaper too.  NEMA 3R is raintight but not water tight.  If you take a hose
and squirt water up at it, water will get in, but if it is just rain or
other water squirted downward at it, it will stay dry.  A very lot cheaper
but you have to decide what you need.
Here is a NEMA 4X on ebay.  I cannot tell how big it is but this is not the
smallest of them and right now it is up for very very cheap
http://www.ebay.com/itm/Ultra-Guard-AMU1648LF-Nema-4X-Non-Metallic-Enclosure-19004-/281226096897?pt=LH_DefaultDomain_0&hash=item417a61b101

Here is another, also very cheap  15"X11"X5":
http://www.ebay.com/itm/NON-METALLIC-NEMA-4X-IP67-ENCLOSURE-15X11X5-SCREW-COVER/300143530543?rt=nc&_trksid=p2047675.m1851&_trkparms=aid%3D222002%26algo%3DSIC.FIT%26ao%3D1%26asc%3D163%26meid%3D3404751709149260179%26pid%3D100005%26prg%3D1088%26rk%3D2%26rkt%3D4%26sd%3D281226096897%26

Bill

--------


Bill Isakson     AC6QV
Roseburg, Oregon USA
bill.isakson at gmail.com



On Sat, Dec 14, 2013 at 3:25 PM, Kenneth G. Gordon <kgordon2006 at frontier.com
> wrote:

> OK. I need to install a remote antenna tuner. The unit I am building
> is pretty big, but will do the job.
>
> The advice I need from you kind folks is, what sort of container can
> you suggest that will be water-tight and yet easily opened to work
> in?
>
> Some sort of plastic picnic basket or somethin' ?
>
> To fill you in a little bit: The rotary coil I am using is out of the
> BC-939 antenna tuner that originally was part of the BC-610
> transmitting setup.
>
> Since the coil is quite large and somewhat difficult to turn, I am
> using an old satellite TV dish mover and control to operate it.
>
> There will also be two fairly large relays in the box.
>
> The coil is 14" long, 9" wide and 8" high and has 1/2" thick ceramic
> end-plates. The satellite TV dish-mover has a gear-motor (with
> position sensors) that is 3" wide, 5" tall, and about 9" deep with
> the shaft sticking out of it.
>
> So, overall length with the drive attached to the coil will be on the
> order of 23".
>
> Ideas?
>
> As soon as I can get my large base-loading coil finished (8" diameter
> PVC and about 600 mH), I'll need to be able to switch that into and
> out of the base of my 55' vertical.
>
> I intend to use the BC-939 coil in series with the big coil to enable
> me to QSY a bit at 630 meters.
>
> Ken W7EKB
>
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