Used GPS TomTom, NavMan Sat Nav


You've come to the right place to buy a used GPS or used Sat Nav system. The GPS, typically named Global Positioning System and originally named NAVSTAR, is a satellite navigation system used for determining one's explicit location virtually anywhere on earth. A GPS unit receives time signal transmissions from assorted satellites, and generates its exact position by triangulating the information. Checkout our great deals and grab yourself a discount used GPS or used Sat Nav.

FAULTY TOMTOM GO 710 GPS RECEIVER - SPARES AND REPAIRS


FAULTY TOMTOM GO 710 GPS RECEIVER - SPARES AND REPAIRS

Price: £36.00

Digital Device Holder for mobile tvs, sat nav etc


Digital Device Holder for mobile tvs,  sat nav etc

Price: £9.99

TOMTOM ONE WINDSCREEN MOUNT AND USB CAR CHARGER


TOMTOM ONE WINDSCREEN MOUNT AND USB CAR CHARGER

Price: £10.99

Garmin NUVI 765T GPS SatNav


Garmin NUVI 765T GPS SatNav

Price: £206.99

Black Carry Case for TomTom GO 520 720 920 holder T bag


Black Carry Case for TomTom GO 520 720 920 holder T bag

Price: £4.99

TOMTOM ONE v2 v3 XL CAR POWER CHARGER NEW EDITION TOM 2


TOMTOM ONE v2 v3 XL CAR POWER CHARGER NEW EDITION TOM 2

Price: £3.99

4.3" LCD FILM SCREEN PROTECTOR for TomTom Go 530 730 XL


4.3" LCD FILM SCREEN PROTECTOR for TomTom Go 530 730 XL

Price: £3.49

3.5" LCD FILM SCREEN PROTECTOR for TomTom ONE V2 V3 V4


3.5" LCD FILM SCREEN PROTECTOR for TomTom ONE V2 V3 V4

Price: £2.79

UK Mains Power Charger fits TomTom ONE Tom V2 V3 XL BN!


UK Mains Power Charger fits TomTom ONE Tom V2 V3 XL BN!

Price: £0.99

UK MAINS CHARGER TOMTOM ONE v2 v3 XL NEW EDITION TOM GB


UK MAINS CHARGER TOMTOM ONE v2 v3 XL NEW EDITION TOM GB

Price: £3.99

UK MAINS CHARGER FOR TOMTOM ONE V2 V3 XL GO 520 720 TOM


UK MAINS CHARGER FOR TOMTOM ONE V2 V3 XL GO 520 720 TOM

Price: £2.99

CAR CHARGER for TOMTOM TOM TOM ONE V2 - BRAND NEW


CAR CHARGER for TOMTOM TOM TOM ONE V2 - BRAND NEW

Price: £2.49

UK Mains Power Charger fits TomTom ONE Tom V2 V3 XL


UK Mains Power Charger fits TomTom ONE Tom V2 V3 XL

Price: £0.99

Mains Charger For Garmin NUVI 200 200W 250 270 370 670


Mains Charger For Garmin NUVI 200 200W 250 270 370 670

Price: £1.49

TomTom One Europe Regional NEW V2 UK CAR CHARGER


TomTom One Europe Regional NEW V2 UK CAR CHARGER

Price: £0.99

Mains charger for Tom Tom V2 V3 XL Tom Tom One UK


Mains charger for Tom Tom V2 V3 XL Tom Tom One UK

Price: £0.99

RAC SAT NAV 200 GPS Receiver


RAC SAT NAV 200 GPS Receiver

Price: £45.00

RED PADDED CARRY CASE TOMTOM ONE v2 v3 3RD EDITION GB 1


RED PADDED CARRY CASE TOMTOM ONE v2 v3 3RD EDITION GB 1

Price: £3.95

BIKE HANDLEBAR MOUNT HOLDER CRADLE FOR TOMTOM ONE V2


BIKE HANDLEBAR MOUNT HOLDER CRADLE FOR TOMTOM ONE V2

Price: £13.99

USB Cable A-MINI B 5 pin for TOMTOM One 300 500 700 UK


USB Cable A-MINI B 5 pin for TOMTOM One 300 500 700 UK

Price: £0.01

DELUXE WINDOW MOUNT HOLDER FOR TOMTOM GO 300 500 700


DELUXE WINDOW MOUNT HOLDER FOR TOMTOM GO 300 500 700

Price: £19.99

REPLACEMENT BRACKET ARM MOUNT FOR TOMTOM GO 300 500 700


REPLACEMENT BRACKET ARM MOUNT FOR TOMTOM GO 300 500 700

Price: £9.99

DELUXE ADJUSTABLE VENT MOUNT HOLDER FOR TOMTOM ONE V2


DELUXE ADJUSTABLE VENT MOUNT HOLDER FOR TOMTOM ONE V2

Price: £14.99

Car Charger Garmin i3 i2 i 3 Street Pilot Sat Nav 2


Car Charger Garmin i3 i2 i 3 Street Pilot Sat Nav 2

Price: £4.99

ARKON SWIVEL CAR VENT CLIP MOUNT for TOMTOM ONE V3


ARKON SWIVEL CAR VENT CLIP MOUNT for TOMTOM ONE V3

Price: £15.49

Carry Case for Road Angel Navigator 6000 7000 Bag New


Carry Case for Road Angel Navigator 6000 7000 Bag New

Price: £3.95

sat nav disc for skoda octavia 56 reg with manual


sat nav disc for skoda octavia 56 reg with manual

Price: £10.00

sat nav disc for mercedez benz e-240 54 reg


sat nav disc for mercedez benz e-240 54 reg

Price: £10.00

TOMTOM ONE v2 v3 XL CAR CHARGER NEW EDITION TOM 3RD 3 2


TOMTOM ONE v2 v3 XL CAR CHARGER NEW EDITION TOM 3RD 3 2

Price: £3.95

GENUINE TOMTOM ONE v2 v3 NEW EDITION MOUNT KIT TOM 3RD


GENUINE TOMTOM ONE v2 v3 NEW EDITION MOUNT KIT TOM 3RD

Price: £18.99


GPS Sat Nav


The GPS normally consists of 24 satellites in 6 orbital planes. Each satellite circles the earth two times every day. The satellites hold atomic clocks and continuously transmit the exact time, along with several other administrative information. The receiver does not necessarily need a precise clock, but it needs to have contact to four satellites in order to unambiguously compute its individual latitude, longitude, elevation and the explicit time. By comparing the signals from 2 satellites, the receiver can compute the diversity between the distances to the 2 satellites. Because the receiver also understands the exact locations of the four satellites, 3 such differences allow a system of 3 (nonlinear) equations for the 3 unknown latitude, longitude and the elevation. As soon as the receivers location and therefore distance to the satellites are known, the time signal sent out by 1 of the satellites allows to compute the exact time at the receiver's location. If elevation information is not essential, only 3 satellites need to be contacted.