TS-32 Tone Board... Multi Freq wiring.

Discussion in '"Boat Anchor" & Classic Equipment' started by KN4QWW, May 26, 2021.

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  1. KN4QWW

    KN4QWW Ham Member QRZ Page

    Anyone done this - I got it working for one tone via the dip switch setting.

    I just cannot figure out what the wiring would look like. I have a 6 pos rotary switch, and the diodes. I just cannot figure out the physical wiring layout.

    Would like to get it working for 6, the instructions say this:

  2. KA5IPF

    KA5IPF Ham Member QRZ Page

    Think about it a little bit. The diode is going to ground Pin 11 of IC107 when position 1 is selected in the picture. Pick the tones you want available and look each up and see which pins need to be grounded to generate that tone. Make a chart showing freq 1 needs 1-3-5, for example, and attach the anodes of 3 diodes to 1 , 3 , and 5. The cathode to position 1 on the switch and the common on the switch to ground. When position one is selected diodes 1,3, & 5 are grounded and the tone sent. Now do the same for the other 5 positions on the switch.

    Cheapo IN4148 or 1N914 will do fine. worst case 25 of them. Have fun.
  3. WB9TEN

    WB9TEN Ham Member QRZ Page

    I've attached a picture of the diodes I used in my HW-202 and an SS-64. The long bare wires that are vertical in the picture go to the encoder inputs. The common points of the diodes (cathodes) go to each switch section which in your case would correspond to the position lug on the rotary switch. This photo does not show that the diodes have some separation from the bare wires. Probably should have slipped some tubing over them. The encoder board is mounted over the Hw-202 TX/Modulator board that is not shown.

    OT to this thread: I had tried to rework the HWA-202-2 tone-burst board for PL but could never get it stable. The tones would adjust correctly on the bench but then shifted when transmitting. I suspected that RF was getting into the board. A separate power regulator may have corrected the problem but I didn't try that.

    Attached Files:

    KN4QWW likes this.
  4. KN4QWW

    KN4QWW Ham Member QRZ Page

    I didn't think about a bread board....that would make this easier. Thanks!
  5. W9GB

    W9GB Ham Member QRZ Page

    Com-Spec TE-12 was a specific CTCSS encoder built by Communication Specialists (Orange, CA) for the US Forest Service (decades ago) and other commercial customers (ranging from 5 to 12 CTCSS codes, depending on switch selected).

    Com-Spec TE-12P : Manual Sheet
    You can see in the Schematic Diagram the Diodes (between IC107 & switch), noted by Clif Holland, and the DIP switch added by Com-Spec (to make the external box “reprogrammable”).
    Last edited: May 27, 2021

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