Clone Yaesu FH-2 keypad

We all know that the Yaesu FH-1 / FH-2 can be easily built at home using some tactile switchesn and resistors.

https://i0.wp.com/anico.cdn.shoprenter.hu/custom/anico/image/cache/w550h550wt1/product/Yaesu_FH-2.jpg

Schematic:

fh2

Here is the PCB with ground plane:

bottom top

Printable PDF’s: fh1 fh2

Eagle board and schematic: http://s000.tinyupload.com/index.php?file_id=01007025175296412571

Here are the recommended resistor values, you can rearrange the buttons as you like:

1 1. text 866 820 47
2 2. text 1330 1K2 130
3 3. text 1820 1K 820
4 4. text 2490 2K4 91
5 5. text 3240 3K 240
6 MEM 4120 3K9 220
7 LEFT 5360 5K1 270
8 UP 6810 6K8
9 RIGHT 8870 8200 680
0 DOWN 12000 12K
* P/B 16900 13K 3K9
# DEC 25500 24K 1K5

Update 12.12.2016:

Slighly modified PCB:

f1

This image is 1500 dpi, print it accordingly (use irfanview for example).

Toner transfer method pcb result:

wp_20161212_20_21_28_pro

Holes made:

wp_20161212_20_21_40_pro

Resistors soldered:

wp_20161212_22_09_49_pro

SMD Switches soldered, and done:

wp_20161212_22_09_34_pro

Final transparent case with the cable:

Works really well on my FT-991. Now I only have to find a use for the DEC and P/B buttons…

Clone Yaesu FH-2 keypad

2 thoughts on “Clone Yaesu FH-2 keypad

  1. Jonathan says:

    Had you thought about a ladder of E48 Resister values?

    Eff Incr E48 E48 Eff
    Button R R Resistor R Difference
    1 Text 1 866 866 866 866 0
    2 Text 2 1330 464 464 1330 0
    3 Text 3 1820 490 487 1817 -3
    4 Text 4 2490 670 681 2498 8
    5 Text 5 3240 750 750 3248 8
    6 Mem 4120 880 866 4114 -6
    7 Left 5360 1240 1270 5384 24
    8 Up 6810 1450 1400 6784 -26
    9 Right 8870 2060 2050 8834 -36
    10 Down 12000 3130 3160 11994 -6
    11 P/B 16900 4900 4870 16864 -36
    12 Dec 25500 8600 8660 25524 24

    —-R1—-R2—-R3—-R4—-R5—-R6—-R7—-R8—-R9 …
    | | | | | | | | …
    sw sw sw sw sw sw sw sw
    | | | | | | | | …
    ——————————————————————— …

    Like

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