Question about Magellan RoadMate 700 GPS Receiver

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Antenna Help Had a problem locating sat so I assumed an RF antenna problem. Sure enough (after opening her up) the connection released from the board. problem is dont know where it goes (through the cylinder?) and onto the tap 10:00 off the cylinder? ..... I assume I need to solder it on ...... any tips and location confirmation would be GREATLY appreciated. Greg C

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Re: Antenna Help

It goes thru the cylinder it keeps it from vibrating off and touching other parts in the unit

Posted on Jan 10, 2008

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GPS Garmin 1450 poor satelittle signal- can't find satelittloes

If the Garmin nuvi 1450 could find satellites at the same location and time before there's something wrong with the built-in receiver / antenna. Because it's not accessible from the outside it needs to be opened to check the antenna connections. Best is to check battery at the same time and replace it - once the problem is fixed.

At some locations there can be poor GPS sat reception - due to line of sight obstructions, such as trees, buildings. For a 2D fix it needs to "see" at least 3 satellites signals.

Jul 05, 2011 | Garmin nuvi 1450 GPS Receiver

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Garmin not receiving satellites

hmmm...did you check for the latest firmware, by chance?

Feb 29, 2008 | Garmin StreetPilot 7200 GPS Receiver

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I have a magellan roadmate 760 with an external antenna that plugs into the back of the unit with about a 2-3 inch wire. the antenna model number is m812b. The whole unit is incased in a plastic surround...

hi dmdalyai,

if its stuck in one location and you can navigate through the unit (like enter addresses ect.) then its an antenna problem...make sure it has a good charge on it and verify its charging in the power options tap, then take it outside in clear view of the open sky and turn it on, then give it up to 30 minutes to lock on to the satellites....

let me know how you make out, if that didnt help, you might want to try another there something wrong with the built in antenna (the one that flips up on the back of the 760 ?

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Oct 11, 2010 | Magellan Roadmate 760 GPS Receiver

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276C not locating any sats

Going to give you a possible solution but i don't think you are going to like it. The problem sounds easy and being as the unit is way off warranty you may or may not want to try this. Sounds like what you have is a broken wire in the antenna or a bad connection, you might MIGHT be able to fix this by opening up the antennae portion of the unit and see what you can see, broken wire or bad connection will have that result. Cleaning of the connector or re soldering of the wire should/might fix the problem. Hope this helps

May 10, 2010 | Garmin GPSMAP 276C GPS Receiver

1 Answer

What fitting is the external antenna is it mmxc?

Hi there,

I hope everybody visiting this webpage will find this answer useful.

First of all, ignore the antenna connector recommended within the RAC Sat Nav 200 manual, it's wrong.

What you need is the :

GPS Antenna 1M Length MMCX with a
180 degrees straight connector.

Make sure it's a MMCX straight connector.

Plug in the antenna and within half a minute of typing your postcode destination into the Sat Nav the reception will have been picked up.

Hope this saves everybody a lot of hassle.

David Coggon - Author of Children's Book ` Jack's Crayons '

Aug 04, 2009 | SNK RAC SAT NAV 200 GPS Receiver

1 Answer

Rc435 works but looses it's fix periodically

The gates are to be removed only for surface mounting, and are there to prevent water ingress under the base. The cable would be crushed if the gate was not removed and the base was screwed onto the cable...
The antenna is powered from the base unit via the cable, but that's a simple DC circuit. The RF circuit is carried in the 'normal' way by the coax cable.
If you can clean the soldier from the scrunched fitting and get a good mechanical support, the soldier will provide the electrical contact. Be careful not to overheat the contact, and be sparing with the soldier when you reattach the braid. The braid is likely to be damaged / oxidized for some distance from the damage, so be sure you have enough slack in the cable. Raymarine's web site says you should see 4.8 / 7.2 Mega ohms of resistance across the antenna plug leads (different ohms depending on polarity of test leads) Good luck.

May 30, 2009 | Raymarine Raychart 435 GPS Receiver

2 Answers

Weak reception, broken surface mount component

You can not find any schematics for the Magellans.  The schematics are classified.  Even when repairing GPS's for Magellan we didn't receive full schematics.  If your talking about the RF cable connector on the I/O Board (the board attached to the rear housing), then it's an easy solder fix.  For the capacitor/resistor:  I'm not sure where you found the capacitor origin, but if it's black with four legs coming off and parallel with the IC then tell me and I'll msg you back the rest. 

Oct 09, 2007 | Magellan RoadMate 700 GPS Receiver

3 Answers

My GPS cannot locate my own position

Try GPS data reset. At user screen push the zoom out key and repeat button at the same time. Select Reset GPS data. This will reset the GPS settings. If after this you are still not getting any signal then you may have a loose RF cable inside your unit. If you feel comfortable opening up your unit and making sure the grey or black cable going from the big (main board) board to the board attached to the rear housing, then do that. Of course this is at your own risk. If you still get nothing after that, it may have something to do with your antenna, which you'll need to take off prior to opening your unit. Turn the antenna all the way out (past perpindicular to the unit) and pull straight out. make sure the connector isn't bent. Keep me updated if anything changes. _Daniel

May 06, 2007 | Magellan RoadMate 700 GPS Receiver

1 Answer

Not connecting to satellite

open up your unit, careful when opening as the RF cable will be tight in between the boards. make sure there is nothing banging around in the unit.. (shake it and listen).. if yes then investigate and report back. if no, then make sure all the cables you can see are tight. especially concentrate on the RF cable.. long cable.. either black/carbon fiber or grey cable. One more place to check is your antenna, (which you'll have to take off before you open up your unit, so do this first) yea jut make sure the antenna is on the unit tightly. Also try resetting user data. + and repeat button at user menu, then select reset GPS data. -Daniel

Apr 18, 2007 | Magellan RoadMate 700 GPS Receiver

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