Airsport IFR/VFD Altitude Alerter
I've been using the IFR Airsport for over a year now and it's really performed better than expected. About 6 months after I purchased the unit, it had a minor switch problem and the company repaired it. Recently, the battery was replaced by the company also free of charge. They seem to be a small company; I have to leave a voicemail when I call but they always respond, and the tech is always helpful. I know a little about electronics and I can tell that this unit is built to last. I've used it all summer on