My dropouts occur mostly when I am within about 500 feet above the airport on final. I don't get many drops in cruise.

I've spent 30+ years selling, installing and servicing electronic equipment and my days of doing free field testing for manufacturers stopped years ago. This is their job, not ours. My responsibility ends when I bring them a bona fide problem that has been duplicated by others. If they then elect to sit on their heals, focusing on sales and not service, my next responsibility is to the future purchasers, informing them of my honest experiences.

I callz them as I seez them...