Any update on this coming back in stock?
amazon.com/dp/B00WZL6WPO?tag=fligh01-20
Also, if I want to use this with the FlightAware Pro Stick and a ADS-B 1090MHz Band-pass SMA Filter, what is the ideal cable setup (best to be from amazon but could order elsewhere if needed)?
antenna → LMR-400 cable with an N male connector and SMA male connector → filter → pro stick
Look at the price someone is selling the filter & antenna on Amazon Canada (amazon.ca)!
https://farm2.staticflickr.com/1600/26144847325_da032e378f_b.jpg
It’s back – thanks for your patience.
Received my 1090Mhz antenna yesterday and immediately installed it, using the N-SMA pigtail I purchased separately. Unfortunately, I’m not seeing any improvement. In fact, it seems to perform worse than the LTE Antenna I was previously using. Since the LTE antenna is tuned for non-ASDB bands (e.g. 829MHz, 1.59GHz, 1.94GHz, 2.55GHz, 5.4GHz) with bandwidths that don’t include 1090 Mhz, I would expect the FA 1090Mhz to blow it out of the water, but it doesn’t seem to.
My setup:
Before:
LTE Antenna → FA 1090 Mhz Filter → FA ADS-B Receiver → RPi
After:
1090Mhz Antenna → N-to-SMA Pigtail → FA 1090 Mhz Filter → FA ADS-B Receiver → RPi
In order to rule out the pigtail, I’ll grab a couple from work and see if that fixes the issue. If not, I guess I’ll have to return the FA antenna.
BTW, when comparing the two antennas using CubicSDR, I definitely see much higher power from the LTE antenna, so I am hoping that the cable is bad…
Be careful with N connectors. There are two types. 75 Ohm and 50 Ohm,
The 75 ohm has a small pin/socket. The FA Antenna uses the 50 ohm(Larger) socket. If you use a 75 ohm plug, it will likely not contact the socket properly.
en.wikipedia.org/wiki/N_connector
Picture showing the similarity between 50 Ω (bottom) and 75 Ω (top) Type N connectors
Thanks for the quick reply and the added info. While the pigtail is indeed 50 ohms, your post made me check what I actually ordered. And sure enough, I stupidly ordered RP-SMA, which results in a female-female connection at the filter, which clearly is a problem. 
So, I’m quite sure an actual N-to-SMA (not N-to-RP-SPA) will make a world of difference! 
You are not the first to do this. It is an easy miss. I had to double check my pigtail orders to ensure that this didn’t happen.
RP-SMA seems to have become popular for wifi, making the parts widely available and so easy to confuse.
@ndelregno:
As a temporary measure for testing the antenna, just cut a short piece of core wire of coax, and insert in RP-SMA-Male center hole to make it behave as a SMA-Male.
That did the trick. Now seeing hundreds of aircraft, some as far away as 250 miles, even with the antenna in a west-facing window, indoors. Now to mount it permanently.
Thanks to everyone for the help!
That’s because the FCC mandated a (then) unusual connector be used to make it difficult for people to connect high gain antennas to wifi gear. Unsurprisingly, it made very little difference once manufacturers got into gear.
When I was getting setup, I realized I accidentally bought an RP-SMA cable, so I ordered an RP-SMA to SMA adapter. Hooked it all up, thought the antenna was rubbish, went back to the beercantenna. Like two weeks later I realize the adapter I ordered was the inverse of what I needed. All it was doing was adding ANOTHER non connection in the signal path. So don’t feel too bad! 
Connectors & adapters are a problem, because of their variety & because some are poor quality. I got frustrated due to dodgey/wrong adaptors when I purchased FA antenna.
Hi all,
Followed this thread when the fA ant first came out.
Is there now a UK supplier?
Quite keen to get on of these…
Cool - I see Amazon UK now do them…
amazon.co.uk/1090MHz-ADS-B- … lightaware
Ordered one, due next week!
Is the N-connector on the ant 50ohm or 75 ohm - did we ever get to the bottom of that?
I already have a couple of N-F adapters, is there a way of telling the ohm’age of those?
On the pic in the ad, it shows the ant mounted in a “collar” that then attaches to the mast with u-bolts…
I dont believe this is included - anyone got a good source for these? What are they known as, so I can search?
THX
EDIT - scrub that, I think it’s the mast itself that’s not included! 
(cheapskates… )
“Easy mounting to antenna mast that is 2cm to 5cm in diameter (not included)”
Just got mine. 50ohm N-Type socket. U-bolts for fitting to a 1.5" mast (not 2")
Yes, you’re correct, u-bolts included but mast is not.
Just installed my FA antenna which I bought on amazon UK. Have located it above my roof line 15m above sea level with a 2m coax cable directly into receiver on Raspberry Pi running ADS-B Reciever (https://www.adsbreceiver.net/) and Piaware. I have noticed a "bit " of an improvement 
Can you guess when I installed it?
https://dl.dropboxusercontent.com/u/49893714/dump1090-localhost-local_trailing_rate-7d.png