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bandk
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Joined: Apr 19, 2009
Posts: 57
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 Posted: Thu Oct 21, 2010 3:31 am Post subject: Antenna |
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| Is there such a thing as an external antenna for a TTXL? thinking of putting mine into a 'pod' in the car. This would need an external aerial of some sort as the pod would be part of the dashboard and affect signal strength. |
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Darren
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Location: Hampshire, UK
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| Posted: Thu Oct 21, 2010 8:02 am Post subject: |
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No there isn't. There used to be GPS Re-Radiating antennas but these are now illegal.
However, given mine works quite happily in the glovebox, you may well find you have no need of any solution?
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DERRICK
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Joined: Sep 10, 2004
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| Posted: Thu Oct 21, 2010 2:14 pm Post subject: |
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| Why are re-radiating antennas illegal now?, I didn't hear about this. when did this happen?. |
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Darren
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| Posted: Thu Oct 21, 2010 2:18 pm Post subject: |
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Happened a few years back, OfCom ruling, unlicensed transmitter.
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Guivre46
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Location: West London
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| Posted: Thu Oct 21, 2010 5:11 pm Post subject: Re: Antenna |
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| bandk wrote: | | Is there such a thing as an external antenna for a TTXL? thinking of putting mine into a 'pod' in the car. This would need an external aerial of some sort as the pod would be part of the dashboard and affect signal strength. |
When you say 'external' do you mean outside the vehicle, or an an additional antenna to plug into the XL. TT still do a 'plug in', which they claim is waterproof, and so usable outside, but you' need to keep a window cracked.
I've just checked TT says only for x00 and x30 series, but I'd thought more devices than that could use them: http://www.tomtom.com/en_gb/products/accessories/antennas-receivers/external-antenna-for-go/
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Mike R [aka Wyvern46]
Go 530T - unsupported
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Darren
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Location: Hampshire, UK
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| Posted: Thu Oct 21, 2010 5:38 pm Post subject: |
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The XL does not support external antennas.
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Darren Griffin |
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bandk
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| Posted: Thu Oct 21, 2010 7:51 pm Post subject: |
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I wanted to mount the unit in a pod in the dash. The problem I have come across is the car manual says not to use phones or satnav in the car unless connected by external (attached to the outer bodywork and by cable to the unit) as their signals may interfere with the onboard vehicle computer systems.
Might just be the car maker being overly sensitive! |
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Guivre46
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| Posted: Thu Oct 21, 2010 7:54 pm Post subject: |
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Not sure why I continue to be surprised that helpful things keep being discontinued. What is the solution for an athermic windscreen these days?
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Mike R [aka Wyvern46]
Go 530T - unsupported
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Darren
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Location: Hampshire, UK
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| Posted: Thu Oct 21, 2010 7:57 pm Post subject: |
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| Guivre46 wrote: | | Not sure why I continue to be surprised that helpful things keep being discontinued. What is the solution for an athermic windscreen these days? |
Modern GPS receivers are no longer affected by athermic screens. SiRFStarIII and later all work fine.
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Darren Griffin |
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Darren
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| Posted: Thu Oct 21, 2010 7:58 pm Post subject: |
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| bandk wrote: | | Might just be the car maker being overly sensitive! |
Almost certainly. SatNav's are receivers only. The signals will be in the car anyway.
Even those with data connections such as LIVE equipped models are highly unlikely to affect the ECU's in a modern vehicle. They are designed to be hardened to interference, particularly from things as common as a mobile phone.
So long as the nav can receive the signal in your desired location then there is no issue.
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JaguarV12e
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Location: Cambridge UK
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| Posted: Thu Oct 21, 2010 8:37 pm Post subject: |
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| Darren wrote: | | Happened a few years back, OfCom ruling, unlicensed transmitter. |
Surely that can only apply to active re-radiating antenna (i.e. those requiring a power supply)? a passive re-radiator is no more a transmitter than a satellite dish is.
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Darren
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| Posted: Thu Oct 21, 2010 8:43 pm Post subject: |
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| JaguarV12e wrote: | | Surely that can only apply to active re-radiating antenna (i.e. those requiring a power supply)? a passive re-radiator is no more a transmitter than a satellite dish is. |
Well yes but I've never seen a passive GPS re-radiator?
The OfCom ruling applies to GPS 'repeaters' which it defines as:
| Quote: | | active devices designed to re-transmit Global Positioning (GPS) or other Radionavigation Satellite system (RNSS) signals |
See OfCom Link.
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M8TJT
The Other Tired Old Man
Joined: Apr 04, 2006
Posts: 10118
Location: Bexhill, South Sussex, UK
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| Posted: Thu Oct 21, 2010 10:42 pm Post subject: |
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| Ofcom wrote: | | Ofcom is aware that the MOD and emergency services use GPS receivers extensively to assist in vehicle and personnel location-based information services. |
Then why can they not use lat/lon as a reference to find you when your'e lost????? |
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Greenglide
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Joined: Apr 04, 2006
Posts: 295
Location: South East Northumberland, UK
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| Posted: Fri Oct 22, 2010 9:29 am Post subject: |
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| M8TJT wrote: | | Ofcom wrote: | | Ofcom is aware that the MOD and emergency services use GPS receivers extensively to assist in vehicle and personnel location-based information services. |
Then why can they not use lat/lon as a reference to find you when your'e lost????? |
Surely if you know your latitude and longitude you are not lost 
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DennisN
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Joined: Feb 27, 2006
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| Posted: Fri Oct 22, 2010 2:56 pm Post subject: |
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| bandk wrote: | I wanted to mount the unit in a pod in the dash. The problem I have come across is the car manual says not to use phones or satnav in the car unless connected by external (attached to the outer bodywork and by cable to the unit) as their signals may interfere with the onboard vehicle computer systems.
Might just be the car maker being overly sensitive! |
With my last van, I had a four way ciggy adaptor socket wired in by a vehicle electrician. It was mounted centrally on my dashboard and wired into somewhere behind the steering wheel. When I plugged in one of my devices (HTC Advantage) on a windscreen mount, occasionally either the van wouldn't start, or it started but the power steering stopped working, and/or it started but wouldn't stop - unplugging the device avoided these effects. The Tom Tom devices plugged into the same adaptor at the same time had no such effect.
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