Hieronder een quote van wat larrynavery van het bewuste forum erover zegt. De piepschuim slotted waveguide antenne schijnt het bij hem goed te doen. Bij een kleiner doorsnede, zodat ie in een PVC buis past, doet hij het zelfs beter. Dat zou best kunnen, omdat de piepschuim, toch enige verkorting tot gevolg heeft, al zal het niet veel zijn.
Op z'n minst lijkt me dit een reden tot nieuwe experimenten. De zomer is nog niet voorbij
De quote:
"-The styrofoam appears to be transparent to 2.4 GHz radio waves so the solid styrofoam isn't even there as far as the radio waves are concerned.
-The aluminum foil is the waveguide and the block describes the interior of the extruded aluminum tubing used in Trevor's antenna design
-Since I made the wave guide shown in the photos, I have had success in constructing it without creases. The creases probably do interfere with the signal reflections but I reasoned that any imperfections small compared with the 1/4 wavelegth are probably insignificant. The real answer is that the antenna works very well with or without wrinkles.
-Since I built the antenna shown, I have resized it to a 30mm x 90mm cross section. My reason was that I wanted to fit the antenna in a 4" plastic pipe and seal the ends so that it would stand up to weather and wind. The surprising bonus was that it performed better than the original.
-As I understand it all of the standards 802.11b, 802.11a,802.11g are still in the 2.4 GHz band. This slotted antenna is specifically built for this band. To be exact, the antenna is built to 2.437 GHz which is the middle channel, number 6."