Friday, October 4, 2019

Filter board for Yaesu FT-817, FT-857, FT-897

I published post about making a home made filter board for Yaesu radios and some folks has written me to make the boards for them. Because of that I decided to make more professionally looking PCBs and ordered them in factory.




After assembling all the components the filter looks look very professional
Remember to cut excess filter pins sticking out on the bottom side
The filter looks very nice in the radio (FT-817ND)

You can accommodate different filters in the board but you have to pay attention to the coding which is accomplished by soldering zero ohm resistors according to the table below. Radios FT-857, FT-897 use this coding to properly show the filter bandwidth on front display, for FT-817 the coding is irrelevant.


Yaesu Filter Part No
Bandwidth
R1
R5
R6
YF-122CN
300 Hz
-
YF-122C
500 Hz
-
-
YF-122S
2.3 KHz
-
-

If you're interested in purchasing assembled board (without the collins filter itself) please write me.
You can find my email on qrz.com page here.

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Filter board for Yaesu FT-817, FT-857, FT-897

I published post about making a home made filter board for Yaesu radios and some folks has written me to make the boards for them. Because ...