Time to put it outside! However I'd like to enclose it to protect it from water.
Question for the group - at what point does a plastic enclosure affect the performance? If I put it in a piece of 4" PVC drain pipe with end caps, will the PVC affect the antenna RF performance?
1090 Mhz is microwave. PVC Drain pipe is generally made of such quality of PVC which absorbs microwaves. Pigments like black or brown increase absorption. White PVC is generally less absorbent.
You can easily test whether or not the PVC pipe you want to use absorbs microwaves. Put a small piece of PVC drain pipe in a microwave oven and run the oven for say one or two minutes and touch the pipe. If it is warm or hot, it absorbs microwave, and will sure attenuate ads-b signal. Do not forget to put a cup of water in microwave oven with the piece of pvc to prevent damage to your microwave oven.
The very first enclosure of the very first Cantenna:https://forum.flightradar24.com/threads ... #post55629
A cantenna installed outdoors without enclosure. For enclosureless installation, better apply self bonding tape at coax's F connector, and some sealant like epoxy where whip enters F-barrel connector, and spray paint the cantenna.https://forum.flightradar24.com/threads ... #post55687