Pagina 21
KB2LJJ Radio Mods Database and Manuals
03/05/2008 08.24.31
http://www.kb2ljj.com/data/yaesu/ft-817.htm
Original 1/19/01
Updated 4/18/01
I received my long awaited YF-122C 455KHz Collins Mechanical CW filter today. It was a snap to
install, but there are a couple of things to look out for. Here's the photos and story. Click on any of the
photos to see the full size version.
1.
Removing the top cover is simple - first take off the shoulder strap brackets (4 screws) and then
remove the 5 screws in the top cover and it pops right off - don't undo the two screws nearest the
speaker grille, those hold the speaker in place on the underside of the top cover. Be sure not to
damage the speaker wires or connector. The wire from the speaker is pretty short but there's just
enough room to get to the connector to undo it if you tilt the top cover up at the rear.
2.
The filter goes in the space at the front of the board.
