Ron Natalie wrote:

John R. Copeland wrote:
Antenna replaced? If it's broken, maybe.
Nothing in the upgrade itself would require that.
And if the cable works OK before the upgrade, it'll work OK afterward.

While the WAAS satellites use the same (L1) frequencies as the
others..rumor has it that the existing antennas Garmin sold with
the 530/430 have a hard time seeing low enough on the horizon to
meet the C146a specs.

I find that hard to believe. Do you know the elevation angle
requirement? I will check how low it picks up soon.

Ron Lee