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Old March 15th 04, 07:40 PM
Jeremy Salch
 
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Mikey wrote:

Jeremy, is your RV skinned with fiberflas or sheet metal? Obviously,
you're
going to have more problems with sheet metal. Also, you said you had the
antenna installed. Maybe you need to go behind the installers, and beef
up the grounding system?

Screwdrivers also give you a few more options. You can take the whole
antenna and mount it inside a PVC tube on the roof of the RV, and run it
horizontally. You can also run the motorized coil inside, and use it to
feed a separately-mounted whip (only a short distance away). In either
case, you still need to beef up the ground systems.

73,
Mike KI6PR
El Rancho R.F., CA

The RV is fiberglass with a metal frame. I hadn't thought about running it
totally horizontally on the roof inside of a piece of PVC, that could work.
But then the antenna is still right next to a fiberglass surface, just
about 10 feet higher in the air. As far as the ground goes, I did the
installing and it is grounded to the Metal frame underneath the RV, which
runs the length of the RV with big metal supports.. etc.

I'm not sure i understand how a seperately mounted whip would work, the idea
sounds interesting but I can't picture it.


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Old March 15th 04, 07:54 PM
Cecil Moore
 
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Jeremy Salch wrote:
I'm not sure i understand how a seperately mounted whip would work, the idea
sounds interesting but I can't picture it.


Try this idea. Run the base of the antenna vertically up about three feet.
From that point, run the screwdriver coil horizontally. Then from the
other end of the screwdriver, run a non-destructable whip as high as
possible. It would look something like this:

|
|
| whip
|
+---screwdriver coil---+
| X
3' | Base non-conductive support
_________|______________________X_____
Top of RV

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Old March 15th 04, 08:10 PM
Jeremy Salch
 
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Cecil Moore wrote:

Jeremy Salch wrote:
I'm not sure i understand how a seperately mounted whip would work, the
idea sounds interesting but I can't picture it.


Try this idea. Run the base of the antenna vertically up about three feet.
From that point, run the screwdriver coil horizontally. Then from the
other end of the screwdriver, run a non-destructable whip as high as
possible. It would look something like this:

|
|
| whip
|
+---screwdriver coil---+
| X
3' | Base non-conductive support
_________|______________________X_____
Top of RV


Ok 3 feet would be a bit difficult... this RV is a 1990 Airex by Rexhall..
and it is 14ish feet tall. so it is about as tall as it is safe to go with
anything that can't take a beating if it might need to. but the basic
idea is to have the coil horisontaly mounted.. and a short wire or some
sort to the mount that the whip is on if i understand it, that makes sense.


the roof looks kinda like the following sketch

there is a rail around the back of the roof and then the ladder, which the
two are connected. then there is the ac unit in the middle in the back

------------------------------------
------- |
[] | |= -- ladder
[AC]| |
[] | |
------- |
------------------------------------






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Old March 15th 04, 08:28 PM
Cecil Moore
 
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Jeremy Salch wrote:
Ok 3 feet would be a bit difficult... this RV is a 1990 Airex by Rexhall..
and it is 14ish feet tall.


Great goobs of goose greese, that's a tall RV. Are you sure it's not
an 18-wheeler? :-) Any chance of mounting your antenna on the front
bumper? Do you have a hood? Some hams use hamsticks on a mag mount
on the hood.
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Old March 15th 04, 08:55 PM
Jeremy Salch
 
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Cecil Moore wrote:
Haha

well the entire thing is fiberglass.. and there is no bumper to speak of...
its a difficult job to mount anything to this guy



Jeremy Salch wrote:
Ok 3 feet would be a bit difficult... this RV is a 1990 Airex by
Rexhall.. and it is 14ish feet tall.


Great goobs of goose greese, that's a tall RV. Are you sure it's not
an 18-wheeler? :-) Any chance of mounting your antenna on the front
bumper? Do you have a hood? Some hams use hamsticks on a mag mount
on the hood.


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