- Jun 22, 2006
I have no use for Onstar and don't subscribe so I made up a pigtail for my 2005 GM Onstar antenna and it's excellent on 700/800 Mhz, seems fine on UHF and VHF. The antenna lead is just a push on coax connector on the back of the Onstar. Since I am mounting in dash, the Onstar was right there, I only needed a few inches to match up the connectors. Just need some coax with an F connector on one end and a BNC on the other to the scanner. F to F barrel connects the original antenna wire to the pigtail. No holes, no magnets, and no extra antennas. Hope this helps someone that may want to use the existing Onstar antenna for a roof mount scanner antenna. No cost either, had the parts for the jumper laying around. 5 minute install and non destructive.