I am looking to buy an Apollo UPS/Garmin SL70 Transponder in good condition. These were discontinued a few years ago, and I have had no luck finding a used one for sale so far.
If anyone reading this has one, or knows someone who does, I am interested. I am proposing to pay an above fair price, allowing the current owner to get a better than average "trade in" value on something more capable (mode S/ADS-B)
