GPS Cable (C2-GPS)

The Redpark GPS cable solution connects an iOS devices to various industry leading GPS receivers via a standard DB9 – RS-232 serial interface. The cable is compatible with all location aware iOS apps, including the Maps and Compass apps that are standard on iOS devices.The cable is one meter long and has a male DB-9 connector and supports data transfer rates upto 57.6 Kbps and requires iOS 5.0.x or above.

This solution is completely plug and play ready and is licensed and certified under the MFi program by Apple and works with all of the leading high accuracy GPS/GNSS receivers that use the NMEA 0183 protocol.


The Redpark GPS cable is now available from Aman Enterprises.

Part #: C2-GPS

This is completely a Jailbreak free solution to connect and use the accurate location data from a high end GPS device – NO modification is required on iOS Device. You don’t need any custom development or special apps to use this solution. We do offer a free app on the Apple iTunes App Store to help updating the serial port configuration in case it is needed to support your GPS device communication. If you are interested in connecting the iOS device to the GPS unit via Bluetooth Communication Interface, please contact us for more details at


Q: What navigation devices does the cable work with?
A: The GPS cable is designed to work navigation devices that use the NMEA 0183 (ver 3.01) protocol. We have tested this cable to work with various leading GPS device manufacturers without any customization or modifications to the GPS Device or the iOS device. Additional GPS units will also work fine as long as they use NMEA 0182 ver 3.01, but we have not had to test them yet.

Q: What iOS devices are supported by the cable?
A: GPS Cable is currently tested for use with iPhone 4s, iPhone 4, iPhone 3GS, iPod touch (fourth generation), iPad 2 and the new iPad.

Q: What apps can I use with the cable?
A: The GPS Cable provides data to an iOS app using the Core Location API. Since the Core Location API is the standard way that a location aware iOS app obtains positioning data, the cable is expected to work any location aware iOS app.

Q: Can I power the iOS device using this cable?
A: No. The GPS Cable does not allow you to charge the device while it is plugged in, however, it may be possible to power the iOS device using an accessory named DockStbz. Customers have reported to us that they are using DockStubz from CableJive for this purpose. DockStubz is compatible with our GPS Cable.

Q: Can I power the GPS device using this cable?
A: Power is not supplied through a RS232 connection. Some very low power devices make use of the RS232 signal lines to supply power. This usage of the RS232 connection is outside of the RS232 specification and may not work in every instance.

Q: Can I develop my own Apps for use with this cable on the iTunes App Store?
A: Since the GPS Cable works with the core location API natively any location services based app will work with this cable as well. for specialty uses, If an app will only require data provided by the GPGGA and GPRMC sentences, then your app can make use of the Core Location API included in iOS to communicate with the external navigation device using our GPS Cable – NMEA Communicator. If your application will require you to use additional NMEA sentences, please contact us at to discuss the SDK for GPS Cable – NMEA Communicator developers. The SDK is provided to you so that you may write your own apps.

Q Once I write my app, can I sell it on the App Store?
A: Yes. Your app will need to pass the standard App Store review process before it can appear on the App Store. You would also need to notify us in addition to apple prior to submitting your app for approvals. Without prior notification, your App will fail Apple Review. This notification is required only prior to first submitting your App for initial approval. App updates do not need any prior notification.

Q: Are there any Apps available on the App Store to help configure the cable settings?
A: GPS Cable works with the free configuration utility App – GPS Cable – NMEA Communicator available on the iTunes App Store. The GPS Cable App allows you to specify different serial port related configuration parameters and allows you to monitor the communication between the GPS device and the iOS Device. Over time this utility will be enhanced further to provide more feedback to the user.

Q: How can I tell if my iOS device recognizes the cable?
A: Open the “Settings” app on your iOS device. Select “General”, then “About”. If the GPS Cable is connected properly, it will appear in the list shown.

Q: How can I tell when my iOS device is using the external GPS (instead of its internal GPS)?
A: It can be a challenge to determine this. iOS does not tell you which GPS it is using. You can use our GPS Cable App (available free in the App Store) to determine if iOS is getting data from an external navigation device. The “Data” screen in the GPS Cable App will showing data coming in from the external device. If there is no data in the monitor window, then iOS is still using the internal GPS.