Is the cable that it comes with removable and if so what kind of connection does the actual antenna have?

Thanks for your question. It is not removable and we did that on purpose to make it more resistant.

Is this as good as the flight aware antenna? Any differences?

Okay, this may not be of much help, but currently we use the AirNav RadarBox flight stick with an indoor antennae (a really cheap one) which is excellent when we are away. We use the outdoor one when we are at home and it picks up practically everything within 200 miles plus. I have no idea about the Flight Aware, but the AirNav suits us fine. I hope that helps...

I’m currently using this antenna at 1090, how does it perform at 978Mhz?

There's a different antenna for that purpose.

Is it possible/reasonable to diplex (use 2 antennas with combiner) to avoid tower shadow? Would losses outweigh benefit?

Yes you can combine two of them and the losses would not outweigh the benefit. They need to be in exact phase or you will introduce additional directivity in the pattern. IIRC you will want to use two equal length cables of 75 ohm into a combiner with a 50ohm feedline to your receiver. That will co-phase them. Worth reading about beamforming, phasing, and combining. The ARRL antenna handbook has a good write up.

Brand Name	RadarBox
Item Weight	7.1 ounces
Product Dimensions	23.62 x 1.18 x 1.18 inches
Item model number	ANTADSBEXTSMA
Is Discontinued By Manufacturer	No
Color Name	Green
Impedance	50 Ohms

AirNav Radar ADS-B 1090 MHz Outdoor Antenna with SMA Connector

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Description

Specifications

Common Questions