A look inside an Andrew KA/KU LNB - not dialup friendly

[RobertE]

This LNB was bad from the box and then took a 3 story drop to the ground. :eek2: I must say I am impressed with how well it is built, but also at the same time, very disappointed in its quality.

First the 110/119

http://i51.photobucket.com/albums/f351/everlyr/DSC00001.jpg

http://i51.photobucket.com/albums/f351/everlyr/DSC00002.jpg

The cover with the D logo is plastic and snaps off with little effort.

http://i51.photobucket.com/albums/f351/everlyr/DSC00003.jpg

A good number of t-10 torx screws holds on the back cover.

http://i51.photobucket.com/albums/f351/everlyr/DSC00004.jpg

http://i51.photobucket.com/albums/f351/everlyr/DSC00005.jpg

The pcb. This thing is thin. 1 or 2 layers max. Very cheap.

http://i51.photobucket.com/albums/f351/everlyr/DSC00006.jpg

http://i51.photobucket.com/albums/f351/everlyr/DSC00008.jpg

http://i51.photobucket.com/albums/f351/everlyr/DSC00007.jpg

The 99/101/103

http://i51.photobucket.com/albums/f351/everlyr/DSC00014.jpg

http://i51.photobucket.com/albums/f351/everlyr/DSC00015.jpg

http://i51.photobucket.com/albums/f351/everlyr/DSC00016.jpg

http://i51.photobucket.com/albums/f351/everlyr/DSC00017.jpg

http://i51.photobucket.com/albums/f351/everlyr/DSC00018.jpg

http://i51.photobucket.com/albums/f351/everlyr/DSC00019.jpg

http://i51.photobucket.com/albums/f351/everlyr/DSC00021.jpg

http://i51.photobucket.com/albums/f351/everlyr/DSC00022.jpg

http://i51.photobucket.com/albums/f351/everlyr/DSC00024.jpg

http://i51.photobucket.com/albums/f351/everlyr/DSC00025.jpg

http://i51.photobucket.com/albums/f351/everlyr/DSC00026.jpg

http://i51.photobucket.com/albums/f351/everlyr/DSC00027.jpg

Lots and lots of screws.

http://i51.photobucket.com/albums/f351/everlyr/DSC00028.jpg

[DTC mac]

Circuitry for Ka and Ku frequencies have special requirements and limitations. What appears to be a cheap PCB is more likely practical, as ordinary PCB construction can be resonant at microwave frequencies. Generaly 2+Ghz operation is best constructrd using stripline or SMOBC construction on teflon dialectric board ( thinner and fewer layers is better, as all wiring is a single layer )

[litzdog911]

Robert, thanks! Nice photos!