Home PageFacebookRSS News Feed
PocketGPS
Web
SatNav,GPS,Navigation
SurfShark VPN
Pocket GPS World - SatNavs | GPS | Speed Cameras: Forums

Pocket GPS World :: View topic - Navman F20 + T1 TMC reception problems cured
 Forum FAQForum FAQ   SearchSearch   UsergroupsUsergroups   ProfileProfile   Log in for private messagesLog in for private messages   Log inLog in 

Navman F20 + T1 TMC reception problems cured

 
Post new topic   Reply to topic    Pocket GPS World Forum Index -> Traffic Message Channel (TMC)
View previous topic :: View next topic  
Author Message
oolaa
Occasional Visitor


Joined: Apr 05, 2006
Posts: 8

PostPosted: Fri May 25, 2007 9:47 pm    Post subject: Navman F20 + T1 TMC reception problems cured Reply with quote

Just thought I'd share the solution I put together from information gathered from around these forums & others.

This solution has worked well for me but you follow these instructions at your own risk of injury or damage. This involves soldering & ideally you need to buy / borrow an inexpensive multimeter to test connections.

I decided that I
a) Didn't want another external antenna,
b) Didn't want to damaged any components that would harm my resale value / reuse of expensive components bought.

I achieved this in 3 steps on my 2004 Ford Mondeo

1) Purchased TMC-Y-adapter cable ISO from Navigon website (35.00 inc postage) https://www.navigon.com/site/int/en/shop/consumer/accessories/26
Please note your car may have a different connector to the ISO one so check first.

This is fitted behind the radio & the end for the traffic emerges via the glove box. This connector is a 2.5mm jack plug which needs adapting to fit the T1

2) Purchased a short MCX to MCX cable from ebay for a few pounds to canibalise. These are also available from cpc.co.uk but more expensive. If you really don't want want your Navman supplied wet string T-Bar antenna you could chop that off. Leave yourself about 6 inches of cable from the plug.

3) Purchase a 2.5mm In line stereo socket (Maplin part FT93B ) cost 89 pence on the highstreet to save postage. I bought 2 as my soldering skills are not great & I knew I'd mess one up!

4) Strip a few cm of cable back leaving the centre core in it's in plastic insulation. The outer braiding will need connecting too but make sure the inner core & braiding don't touch each other.

The inner cable needs soldering to the terminal on the Line socket that will connect with the tip of the jack plug.

The outer braiding needs soldering or crimping to the outer section / cable relief on the line socket.

The second terminal remains unconnected.

This is where a multimeter will come in handy to check you have made the right connections & have no shorting.

5) Finally connect everything together & your TMC signal quality improve dramatically!

Mine went from approx 40% (basically only when in major cities) to 95% (almost seamless service)


Last edited by oolaa on Sat May 26, 2007 3:44 pm; edited 1 time in total
Back to top
View user's profile Send private message
Dustysworld
Occasional Visitor


Joined: Feb 13, 2007
Posts: 53
Location: Southampton (England)

PostPosted: Sat May 26, 2007 6:09 am    Post subject: Reply with quote

So to get a unit that should work out of the box you spent about 40 plus to achieve this Confused

I went for the external route and was cheesed of spending 25 to achieve my aims. Personally i think thats way to much money to spend on something that should work out of the box, let alone 40 ish
_________________
www.dustysworld.net
Back to top
View user's profile Send private message Visit poster's website
oolaa
Occasional Visitor


Joined: Apr 05, 2006
Posts: 8

PostPosted: Sat May 26, 2007 3:40 pm    Post subject: Reply with quote

Mine did work out of the box , just not everywhere.

I'm not saying it's right but I think manufacturers are covered by putting on the packaging "*Subject to coverage".

They should at least warn that you may need an external antenna (& make one available!) in the same way as they do for the GPS signal.

I was annoyed with myself for not doing the research before purchasing.
_________________
Navman 510
Back to top
View user's profile Send private message
mikealder
Pocket GPS Moderator
Pocket GPS Moderator


Joined: Jan 14, 2005
Posts: 19638
Location: Blackpool , Lancs

PostPosted: Sat May 26, 2007 4:11 pm    Post subject: Reply with quote

Nice set of detailed instructions for getting better reception, iTIS the service provider even recommend coupling to an external aerial for the best results, see This post for further details -
It is the manufacturer 's that let the side down offering poorly thought out aerials and receivers, at least Navman offer the connection point, have a little sympathy for TomTom RDS-TMC users who have to open the device and solder to the PCB with limited results, and whilst doing this they void the waranty - Mike
Back to top
View user's profile Send private message Send e-mail MSN Messenger
keithjeffrey
Lifetime Member


Joined: Apr 07, 2006
Posts: 249
Location: Kent , England

PostPosted: Sat May 26, 2007 5:47 pm    Post subject: Reply with quote

I went the Maplin mag-mount external aerial plus Garmin adaptor route , which cost me about 35.00.

Believe me , I was'nt happy having to pay it , but I was'nt going to get my T1 to do what it SHOULD do without forking out.

Navman don't think / won't admit there is a problem , so the only thing to do is to put your hand in your pocket yet again.

Not the ideal solution , but a solution none the less !
_________________
Keith
TomTom GO 730T App 8.392 (1909/091109) , W and CE 2GB v835.2419
Back to top
View user's profile Send private message
2216
Regular Visitor


Joined: Dec 10, 2005
Posts: 245

PostPosted: Sat May 26, 2007 8:05 pm    Post subject: Reply with quote

This is the way that I used to get better signal on my Sony U50T even down to the 2.5mm jack. It's worth the effort as it's now locking on 95% of the time.
Back to top
View user's profile Send private message







Posted: Today    Post subject: Pocket GPS Advertising

Back to top
Display posts from previous:   
Post new topic   Reply to topic    Pocket GPS World Forum Index -> Traffic Message Channel (TMC) All times are GMT + 1 Hour
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

Make a Donation



CamerAlert Database

Click here for the PocketGPSWorld.com Speed Camera Database

Download Speed Camera Database
21.093 (20 Sep 23)



WORLDWIDE SPEED CAMERA SPOTTERS WANTED!

Click here to submit camera positions to the PocketGPSWorld.com Speed Camera Database


12mth Subscriber memberships awarded every week for verified new camera reports!

Submit Speed Camera Locations Now


CamerAlert Apps



iOS QR Code






Android QR Code







Terms & Privacy


GPS Shopping