Thanks Stuart,it could probably be fitted to a Skinner type trap though in my experience Skinners don't retain Moths so good.you need some form of cover in inclement weather although it was still on after 2hrs of continuous heavy rain once ! I used a Gemlight at one end of quarry and Podlight nr other end for july/Aug I was targeting 5 specific species Ie Drinker, Confused,Grey Mountain Carpet, Tissue,and a real outsider Northern Rustic I managed 3 of the 5 (interesting though,when a team of us humped a Robinson MV /Generator up there a good few times we never got Tissue and only started getting those to LED,ps didn't get any Northern Rustic or G Mountain Carpet the other 2 target species. I'd say the podlight beats the Gemlight mk 1 on numbers/species, and the only Tissue came to the Podlight.i couldn't tell you the wave lenghts of the LEDs though other than what's been stated on your post.regards Bri. Ps other notable sp were Anomalous ,Neglected and Heath Rustics.