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This is not a build thread, although I am making a couple of these.
There are a couple of sites that show you how to build simple patch antennas. You need to do some simple math to figure of the size of things for 900mhz.
I think the first one has already been posted in one of the Eggfinder threads and maybe even on his webpage.
https://www.rc-cam.com/gp_patch.htm
and
https://www.rcgroups.com/forums/showthread.php?t=1292451
In one of the threads they use some 26 gauge Galvanized sheeting , Homedepot Lowes etc. I bought the 26 Gauge and it's pretty flimsy. I'd try to find something thicker. 26 gauge might work well for the size of antennas they are making. When you scale them up to handle 900 MHz they get pretty big, and flimsy out of 26 gauge. Using either of these sites to build a patch antenna will make your antenna about 8-10 inches in size.
The other thing to research are the SMA connector or connectors need to get it from the antenna into the EggFinder LCD. It made me go nuts trying to figure out what to order. I ended up going with a SMA Female RIGHT Angle Solder PCB Mount RF Connectors for the antenna. And a SMA Female to RP-SMA Male RIGHT Angle RF Connector Adapter to adapt to the EggFinder LCD. Joint the 2 with a short cable I had. I've not received all the parts yet and I may still be going crazy.
Just a heads up.
Tony
There are a couple of sites that show you how to build simple patch antennas. You need to do some simple math to figure of the size of things for 900mhz.
I think the first one has already been posted in one of the Eggfinder threads and maybe even on his webpage.
https://www.rc-cam.com/gp_patch.htm
and
https://www.rcgroups.com/forums/showthread.php?t=1292451
In one of the threads they use some 26 gauge Galvanized sheeting , Homedepot Lowes etc. I bought the 26 Gauge and it's pretty flimsy. I'd try to find something thicker. 26 gauge might work well for the size of antennas they are making. When you scale them up to handle 900 MHz they get pretty big, and flimsy out of 26 gauge. Using either of these sites to build a patch antenna will make your antenna about 8-10 inches in size.
The other thing to research are the SMA connector or connectors need to get it from the antenna into the EggFinder LCD. It made me go nuts trying to figure out what to order. I ended up going with a SMA Female RIGHT Angle Solder PCB Mount RF Connectors for the antenna. And a SMA Female to RP-SMA Male RIGHT Angle RF Connector Adapter to adapt to the EggFinder LCD. Joint the 2 with a short cable I had. I've not received all the parts yet and I may still be going crazy.
Just a heads up.
Tony