Here is my collection of pictures of PAC Wireless 5ghz feeder.
Please If Anyone have idea what design is used inside and have any pictures – send me a mail or post a comment or contact me.
one more picture
Posts Tagged ‘feeder’
Pac Wireless Feeder 5Ghz
Friday, September 28th, 2007Backfire Helix Feed
Friday, September 21st, 2007First – I never made any helix antennas, nor spirals or anything similar. Consider this as warning 
BUT in the HAM world spiral feeders used in dishes is something very often used.
http://members.cox.net/nx7u/ao40/backfire/backfire.htm
Very simple – small spiral and reflector in front of the dish.
It looks like that in the spirals there are several modes endfire and the normal-mode. This modes are explained on the side, but more reading is needed. Also there is right and left hand rule in these antennas.
On the page is a NEC code witch may be useful to simulate this antenna.
Dimensions on the pictures are given for 2401MHz but the peak for this is around 2.3ghz so for tests whit wifi we must change dimensions a little.
If anyone have the references as PDF – do not bother to send them to me
more pics :
DIY Hi-Gain Antenna on Cheap ;)
Friday, August 31st, 2007
Very Cheap Dipole feeders – they are easy to be build and you do not need a lot or expensive materials. Everything here can be made from wire or scrap /I watch too much scarpwars on Discovery channel /
I found some very interesting looking feeders for dishes – VERY cheap to make, first is made only from feeder line or simple coax.
http://patraswireless.net/antennas.html
“A simple dipole feed. Good solution to illuminate parabolic constructions (solid, grid etc.) Heliax holds the dipole, as well as feeds the N-type female connector to the back. Tests shown 4 dBi (against Lucent 24 dBi parabolic grid). “
Second is Russian of course http://www.hub.ru/forum/index.php?showtopic=16285
Name of the file is interesting too D_Linc3_008.jpg
Interesting materials – onli several pieces of pcb board are used – very good.
From the same forum are these too -
Last pic is from http://martybugs.net/wireless/conifermods2.cgi
And for the end howto make wire reflector or DIY Parabolic Grid Reflector
Info is from this : http://www.zero13wireless.net/foro/showthread.php?t=248
19dbi gird blueprint :
For me is easy to buy small offset dish – 80cm is around 10 to 15 Euros here.