Adapting a Garmin Traffic Receiver to car antenna?
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From: JDG on 24 Feb 2010 07:54 On Feb 24, 12:03 pm, "ullim" <dataf...(a)virgilio.it> wrote: > > Where is the antenna connector you are talking about ? > > Hmm the GTM-25 shipped with my 1490T has a stereo mini-jack plug for antenna > cable (included in the package) on the side of the receiver. There is a fundamental difference between the two traffic receivers which support the Nuvi 660: GTM-20 - US-only with no external aerial - and the cognate GTM-21 - Europe only, with plug-in wire aerial. Living in the UK, I have the external receiver for my StreetPilot 2780, external wire aerial for Nuvi 710T (cradle mount) and Nuvi 1490T (mini USB connection) (don't ask - but keeping the maps updated is an expensive exercise); my guess is that US local FM stations are powerful enouigh not to need a separate aerial, and the signal will indeed be picked up by the connecting lead. Only experimentation will show how much of this has to be 'visible' for it to work.
From: Rich Webb on 24 Feb 2010 08:06 On Tue, 23 Feb 2010 21:51:45 -0800, DaveC <invalid(a)invalid.net> wrote: >It's the cradle-mount FM receiver / power adapter that is unique to the 660 >and is found only in the GTM20. > >> It is a bit confusing - even have the GTM-20 listed twice, >> but with different hardware features... > >In a conversation with Garmin tech support, I learned that there are 2 GTM-20 >receivers: pn 010-00544-01 and pn 010-00544-13. The only difference is that >the -13 comes with lifetime traffic service and the -01 comes with a trial >service (6-months or 10 months -- both were offered). From what I can tell, the two parts that are labeled GTM-20 are also physically different. The original, with the 6/10 month trial, had a uniform cord between the 12 V plug and the GPS-side connector. The newer one, with the lifetime subscription, has a molded section near the GPS terminus which includes the receptacle for an external antenna connector. -- Rich Webb Norfolk, VA
From: Thibaud Taudin Chabot on 24 Feb 2010 17:05 DaveC schreef: >> I wired the receiver for my 680 to an accessory jack that's switched >> with other stuff; it's hidden, and the cord to the 680 runs under the >> dash. Everything works well, with the wiring hidden. > > My original question is how to tap the FM traffic receiver into the car's > radio antenna. > Is the VIB11 from Garmin the solution for you? It uses the carantenna for receiving the traffic messages. Thibaud
From: Steve Stone on 27 Feb 2010 14:55 A few days ago I picked up a Garmin NUVI 285WT for $100 from Amazon.com I was configuring it indoors and trying to activate the MSN traffic service 9 month trail. I could not get a good enough signal indoors so I connected a piece of coax to the wall jack leading to our outdoor TV antenna, put a jumper wire with an alligator clip on the inner wire of the coax and wrapped the jumper wire around the NUVI power cord (which includes the traffic receiver) and the signal strength increased to 100 percent, all bars lit green, allowing me to activate the traffic software. I wonder if a similar technique would work with a car radio antenna? Steve
From: Bart! on 27 Feb 2010 15:39
On Sat, 27 Feb 2010 14:55:26 -0500, Steve Stone <n2ubp(a)hotmail.com> wrote: >A few days ago I picked up a Garmin NUVI 285WT for $100 from Amazon.com >I was configuring it indoors and trying to activate the MSN traffic >service 9 month trail. >I could not get a good enough signal indoors so I connected a piece of >coax to the wall jack leading to our outdoor TV antenna, put a jumper >wire with an alligator clip on the inner wire of the coax and wrapped >the jumper wire around the NUVI power cord (which includes the traffic >receiver) and the signal strength increased to 100 percent, all bars lit >green, allowing me to activate the traffic software. I wonder if a >similar technique would work with a car radio antenna? > >Steve What is so goddamned difficult about simply buying a GPS antenna, which BTW, you retarded, overtly cross-posting twit, makes the device properly accurate? |