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Many of you have seen the antenna tuner I use with the Yaesu ft-891. It looks very similar to the old style Z100 discontinued a few years ago by LDG. When I purchased the Yaesu FT-891, I automatically assumed the Z100 ( in its original enclosure) would be available for purchase. This is the one that looks very similar to the z817, but having 125w capabilities. It wasn’t, so I simply didn’t buy another LDG tuner.
Why not buy the updated z100plus?
Other than not liking it, and having to add more weight to my pack ,…
- It’s 4oz heavier
- It’s unnecessarily bulky
- And it’s ugly as all heck (subjective).
The original design was perfect!
Perhaps LDG was trying to maintain some continuity with its products when it updated the Z100enclosure, but I really don’t know.
This post is an extract of an email sent to me by John N0JDS. It’s augmented with pictures of the modified tuner, so that others can do this modification themselves.
I completely agree on the form factor of the new z100+. That metal case is bulky and heavy, I have no idea what possessed them to change it. I have the original Z100 which is what gave me the idea for the conversion in the first place and, truth be told, the converted tuner is a better tuner than the original Z100.
- First obviously is a new case.
- Second which is less obvious is a 6 battery AA battery tray to replace the 8 battery tray that comes with the z100+.
The circuit board will screw straight in to the new case as if it were made for it. All of the stand offs are in the correct locations. There are also some standoffs in the lid of the new case which have to be dremeled off in order to clear the batteries. This just took a few seconds.
The 8 battery tray will not fit in the tapered case. It requires some very simple soldering to change that tray out.
Also I used some of that very heavy duty Gorilla double sided tape to fasten the battery tray to the top of the relays. I found it at Home Depot.
One way that worked OK for me was to tape the new face to the front or rear of the metal case and use a fine pencil to scribe the hole locations. Just be sure that the new face is lined up perfectly left to right on the new case. Just make sure that the inside (shiny side) of the new face is taped against the case. and not the textured side.