GPS antennas on Snorkels
Submitted: Tuesday, Nov 02, 2004 at 16:32
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Member - Alan S (NSW)
Hi,
I hear that a few people mount their GPS antennas on the top of the
snorkel. How is the cable run back down? Inside the
snorkel by drilling a hole at the top or cable tied to the outside or how?
Seems like a great place for the antenna, clear view of most of the sky and all that but I can't seem to figure out a neat way to run the cable back inside the cabin and I am interested to hear from others that have done this,
Thanks
Reply By: Phil G - Tuesday, Nov 02, 2004 at 17:22
Tuesday, Nov 02, 2004 at 17:22
My GPS is held with a blob of black silastic and the cable run down the outside of the
snorkel (largely out of view) and inside the door, then up under the rooflining to where the GPS sits above the rear view mirror. The cable is simply stuck to the
snorkel with silastic.
AnswerID:
82744
Reply By: Member - Captain (WA) - Tuesday, Nov 02, 2004 at 17:52
Tuesday, Nov 02, 2004 at 17:52
Hi Alan
My antenae is mounted on top of the
snorkel (~1/2" hole drilled on top of
snorkel and nut inside retaining antenae - cable exits from the threaded section now inside the
snorkel) The cable exits from the
snorkel at the
water drain at the back of the "ram head".
The cable is then cable-tied on the outside of the
snorkel and then enters into the passenger door opening just below window height. The
snorkel is only ~15mm from the door here so the cable is barely noticeable as it tucks into the door. I had a similair setup on my 80 series and have never had a problem with the cable as it enters the door opening.
Hope this makes sense, can take a few pics if you need.
Cheers
Captain
AnswerID:
82749
Follow Up By: Willem - Tuesday, Nov 02, 2004 at 22:21
Tuesday, Nov 02, 2004 at 22:21
G'day Captain
What is the advantage of a GPS antenna aerial? Is it of value in the cities amongst tall buildings? My old Magellan Map 330 always seems to get 9 or 10 satelites at any given time albeit out in the open spaces just sitting on the dash of the GQ
FollowupID:
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Follow Up By: Member - Captain (WA) - Tuesday, Nov 02, 2004 at 22:59
Tuesday, Nov 02, 2004 at 22:59
Hi Willem,
I have my GPS sitting on top of my steering column, virtually directly under the speedo. In this position, the antenae is virtually totally obscured by the dashboard and gets a weak signal, if at all, hence the need for an external antenae.
But the difference with the antenae is virtually full satellite strength even when in tall trees and hilly areas. In my garage (roller door open) I still get satelite reception from any satelite it can "see" through the open garage door from behind. Impressive, but whether it actually means anything is a mute point.
If you get good satellite reception with the standard antenae in its current mounting, I wouldn't bother changing. Just that my GPS location made it a necessity.
Cheers
Captain
FollowupID:
341857
Reply By: Wayne (NSW) - Tuesday, Nov 02, 2004 at 18:38
Tuesday, Nov 02, 2004 at 18:38
Alan,
I have the gps antenna on top of the
snorkel and the cable running down the inside the
snorkel and it exit in to the engine bay via a small hole in the rubber sleave. The cable then goes through the fire wall into the cabin, no risk of squashed cables.
Wayne
AnswerID:
82754
Follow Up By: Member - Alan S (NSW) - Wednesday, Nov 03, 2004 at 10:58
Wednesday, Nov 03, 2004 at 10:58
Hi wayne,
Did you drill a hole in the top of your snorkle to run the cable through? My external GPS antenna has a BNC connection that is quite big so I'd need a fairly big hole to pass it through..
FollowupID:
341894
Follow Up By: Wayne (NSW) - Wednesday, Nov 03, 2004 at 17:54
Wednesday, Nov 03, 2004 at 17:54
Alan,
I did have to cut a 20mm hole in the top of the
snorkel head. Just took it off and drilled a 12mm hole and filed the rest, the plastic is pretty soft.
I had the same set up on the 80 Series for many years and did not have a problem with branches ripping the antenna off.
The first time that you drill a big hole in the side of a guard to fit a
snorkel is the hardest and after 20 you don't worry about it any more.
Wayne
FollowupID:
341928
Reply By: Member - Jeff M (WA) - Tuesday, Nov 02, 2004 at 18:46
Tuesday, Nov 02, 2004 at 18:46
I run a temp sensor for outside ambiant on under the air ram of the
snorkel and run the wire between the
snorkel and the body of the car. There is a little gap I found in there (on
mine anyway) where there is some foam. Wedged it in and it's never come loose. Bit of silicon here and there as glue helps. It then runs through
the gap of the bonnet and then through the firewall gromit into the cab.
Personally thought with my Garmin GPS II I just have a sunction cup antenna stuck to the windscreen in front of the rear view mirror and it works a bloody treat, always got 3d readings even in bad weather and normally have between 4-6m accuracy with it. It never falls off either (which suprised me!!)
AnswerID:
82756
Reply By: Jarrod - Tuesday, Nov 02, 2004 at 19:29
Tuesday, Nov 02, 2004 at 19:29
G'day Alan,
I've got a std 100, 2001, Installed my own
snorkel (had 5 mates come over, just to watch me drill the two 3-1/2 inch holes!!!) My remote GPS antenna had a magnetic base, so I used silicone to glue a large flat washer ( you could use any old piece of metal) the size of the gps, to the top of the
snorkel. If you got the safari job, you'll notice the top of the air ram is not quite flat - the silicon took up the difference. Cable runs down the back of the air ram, then inside via a
water drain gap. Inside the air ducting, then exits the air duct just inside the gaurd, inside the engine bay then through the firewall. You can go anywhere from there. - I extended my ant. cable to about 5 mtrs to do this, I found the suctioncup position for the gps inside the dash worked in flatter terrain, but in my playground ( the
Vic high country) deifnitely needed it exterior, and up high!!
Good luck,
Jarrod.
P.s., now you've got a
snorkel, you'll need to update your member photo!!! - nice rig.
AnswerID:
82762
Follow Up By: Member - Alan S (NSW) - Wednesday, Nov 03, 2004 at 11:14
Wednesday, Nov 03, 2004 at 11:14
Hi Jarrod,
You are a braver man that I installing your own
snorkel. Did you relocated the indicator or just throw it away? I have a safari
snorkel, where is this
water drain gap? The
snorkel was only fitted a few days ago and now the LC is with Toyota for some serious warranty repairs so I haven't had a chance to look too closely at the installation yet.
New pics will be posted if the LC comes back in one piece! Thanks.
FollowupID:
341897
Reply By: Member - Willie Sydney - Tuesday, Nov 02, 2004 at 19:47
Tuesday, Nov 02, 2004 at 19:47
Hi Alan ,
I went away with a car that had it mounted on the
snorkel and in our excursions north and south of the CSR in August , I noticed that his aerial copped a caning from bushes on the side of the track . My
snorkel has battle scars all the way up it .
I bought a Magellan FX 324 this month and mounted the aerial on the centre / front of the roof rack .It is
well away from trees there . I mounted it using a tilt boating fitting made of white nylon which allowed me to tilt it vertical after mounting it on a sloping near vertical surface .
I have a 2001 TD Cruiser and I ran the GPS aerial wire down the leg of the roof rack , into the channel for the roof rack mounts , then down the side of the windscreen ( there is an overhang here and you can push it under and out of sight ) and then into the corner of the bonnet and down through the firewall and up to the unit which sits on top of the dash .
It's a realy neat installation .
Cheers ,
Willie .
AnswerID:
82767
Follow Up By: Member - Alan S (NSW) - Wednesday, Nov 03, 2004 at 11:10
Wednesday, Nov 03, 2004 at 11:10
Hi Willie,
I like the sound of your solution but our roof rack has to come off when at home or else we can't garage the LC :(
FollowupID:
341895
Reply By: Member - 'Lucy' - Tuesday, Nov 02, 2004 at 22:54
Tuesday, Nov 02, 2004 at 22:54
Alan
When in use
mine now mounts on a spare aerial mount on the bull bar using its magnetic base.
I have stuck a piece of self adhesive velcro on the top of it for when its not in use.
All I do is lift it off the bull bar and attach it to the 'opposite' matching piece of self adhesive velcro strategically placed in the engine bay and all is kewl as Truckster would say.
Stops thieving light fingers, brush damage and unecessary exposure to the elements.
The cable is routed through a flexi conduit to the fire wall and then through the obligatory grommet that takes much cursing and grunting to pass the mother through to the passenger area.
Do with it what ever floats your boat from there on.
Ken Robinson
AnswerID:
82816
Reply By: Member - Alan S (NSW) - Wednesday, Nov 03, 2004 at 11:15
Wednesday, Nov 03, 2004 at 11:15
some great responses here, thanks for taking the time to answer...
AnswerID:
82869