Yep,
NooElec also do a kit with 5dBi gain antennas, but they are longer and definitely NOT necessary for 1090MHz reception as you will easily pick up aircraft from over 100 miles out. The unfortunate thing with both these kits (as stated in one of my earlier posts) is that the 978MHz band antennas are of no real use to us for PilotAware as this frequency is not available for use in the UK, though they will in fact 'work' as receive only antennas - just not quite as well as the 'tuned to 1090' version - though in practice you might not notice much difference.
Do NOT be tempted to try 'out of tune' antennas on the P3i side though. At only 500mW maximum legal output, trying to run an 'out of tune' antenna on this side of PilotAware would have a seriously negative effect on transmission and reception range.
Regards
Peter