Tmc receiver cable length

NO_MAD · Posted: Tue Oct 30, 2007 5:17 pm Post subject: Tmc receiver cable length

Hi all

What is the length of the NEW TMC Receiver cable? As i am a white van man and am going to get a720, tmc receiver and a Brodit docking station and am thinking where to mount the unit.

GPS_fan · Posted: Wed Oct 31, 2007 11:18 am Post subject:

NO_MAD,

It might also be worth asking users how best to position the new receiver - vertically, horizontally etc - in case this has a bearing on where to mount your unit
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Andy
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pcaouolte · Posted: Wed Oct 31, 2007 1:45 pm Post subject: Re: Tmc receiver cable length

othilla · Posted: Wed Oct 31, 2007 6:09 pm Post subject:

Mine works best running horizontally along the bottom of the screen aswell.

erikthecat · Occasional Visitor Joined: May 21, 2006 Posts: 42

yeah, this is a good thread.
i have just been sent my replacement RDS/MC unit (thanks TOM TOM)
with the shorter aerial and my mount, routing of the antenna in the tom tom suggested manner is impossible!,
so i guess it's just going to be a trial and error thing as far as placing is concerned?
keep us posted,
regards,
GaRy:)

Tim Buxton · Posted: Fri Nov 02, 2007 7:40 pm Post subject:

I've posted the approximate dimensions here.
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Tim

GPS_fan · Posted: Sun Nov 04, 2007 9:06 pm Post subject:

mikealder · Posted: Sun Nov 04, 2007 9:10 pm Post subject:

Have a look slightly further up the same thread linked and you will find the dimensions, or try This for a direct link to the specific post containing the dims - Mike

philpugh · Posted: Wed Nov 07, 2007 4:32 pm Post subject:

The usual rule-of-thumb for whip aerials (ie. a bit of string) is 1/4 wavelength.

Assume 100MHz reception = 3metres wave length - gives you 75cms (~2ft). The main factor with any aerial is where you place it! Inside a car is a very bad place for an FM aerial - the car and occupants screen lots of the signal and the car electronics produce wide-band interference. I am including things like computers (ie sat navs), phones,PDAs... in this group.

yes the GTM21 (just to pick one I am familiar with) is a typically poor aerial. But get it connected to an outside aerial and things improve dramatically.
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Phil

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