Using the stock GPS antenna
07-12-2007, 11:47 PM
#1
Using the stock GPS antenna
Hi,
The car is a -98 A8. I am trying to use the stock GPS antenna mounted on rear trunk with my Holux 236 GPSlim Bluetooth unit. I bought a suitable SMB-MMCX adapter from ebay and hooked it to the antenna.
The problem is that I am not sure if this works. The output of the module is 3 volts. Is this too low for the stock antenna?
If I measured correctly the impedance of the stock antenna is 260 ohms. Can this be correct? All ebay GPS antennas seem to be 50 ohms.
Is the stock antenna a passive GPS antenna or is it an active model (with separate power)? I believe it is passive.
The car is a -98 A8. I am trying to use the stock GPS antenna mounted on rear trunk with my Holux 236 GPSlim Bluetooth unit. I bought a suitable SMB-MMCX adapter from ebay and hooked it to the antenna.
The problem is that I am not sure if this works. The output of the module is 3 volts. Is this too low for the stock antenna?
If I measured correctly the impedance of the stock antenna is 260 ohms. Can this be correct? All ebay GPS antennas seem to be 50 ohms.
Is the stock antenna a passive GPS antenna or is it an active model (with separate power)? I believe it is passive.
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