RTLSDR Driver Installation

First download and install MacPorts. After you have installed it run the following in a terminal:

sudo xcodebuild -license
sudo port -v selfupdate
sudo port install rtl-sdr

1. Download the RTLSDR libraries and utilities from Osmocom and extract it to a folder of your choice.  If you want to different applications to use the driver a good location is C:\Program Files\rtlsdr  You should end up with something similar to this:
   
2. If you are using the installer add C:\Program Files\rtlsdr\x32 to you PATH.  The stand alone version is for 64 bit versions so you should add the x64 directory to your path instead.  If you are unsure about this you can use Rapid Environment Editor.
3. Download and run the Zadig utility (note there is a separate version for XP).  Zadig is used to replace the Windows driver so the RLTSDR driver can access the dongle.
4. Select 'Options' and tick 'List All Devices'.
   
5. From the drop-down list select 'Bulk-In, Interface (Interface 0)', then click the 'Replace Driver' button.
   
6. A warning may appear that the publisher cannot be verified, click on 'Install this driver software anyway'.  You don't need to worry about this warning, it's simply because a publisher signature is not included with Zadig, but it's still trustworthy.
   
7. If you have any more dongles attached repeat step 5 and select the next bulk interface.

The driver should now be installed, to test it follow the instructions below.

To see if it's working open a command prompt.

Then run:

rtl_test

You should see an output similar to this:

Found 1 device(s):
  0:  PROlectrix DV107669

Using device 0: PROlectrix DV107669
Found Fitipower FC0012 tuner
Supported gain values (5): -9.9 -4.0 7.1 17.9 19.2

Info: This tool will continuously read from the device, and report if
samples get lost. If you observe no further output, everything is fine.

Reading samples in async mode...
lost at least 12 bytes

If so your dongle and driver are now fully installed.

Potential Errors

• 'rtl_test' is not recognized as an internal or external command, operable program or batch file.
If you used the installer, first change to the installation directory, otherwise you're PATH hasn't been set properly, try step 2 again.
• rtl_test reports 'No supported devices found.'
  The driver has not been installed, try steps 3 to 7 again.
• rtl_test keeps repeating 'lost at least'
  Your machine may be too slow, try closing other programs and plug the dongle into a different USB port.