My LNA + filter http://www.ebay.com/itm/1090MHz-ADSB-Filter-LNA-band-pass-filter-with-SMA-connectors-Mode-S-SAW-aviation-/122360480859?hash=item1c7d40c45b:g
~AAAOSw44BYZl4~ arrived this morning so I tested it with my Franklin antenna. The range improved quite a bit but not as much as I had hoped.
I then decided to put an extra element on the end of the Franklin. 20170224_135528.jpg20170224_135545.jpg Once more range increased but it is still not to the limit defined by the HeyWhatsThat 30,000 ft Up In The Air ring.
I think I am done building antennas. I shall wait a couple of weeks and then buy a DPD Productions model.

I then decided to put an extra element on the end of the Franklin. 20170224_135528.jpg20170224_135545.jpg Once more range increased but it is still not to the limit defined by the HeyWhatsThat 30,000 ft Up In The Air ring.
I think I am done building antennas. I shall wait a couple of weeks and then buy a DPD Productions model.
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