Astatic D-104 with T-UP9 wiring for Kenwood TS-520S

Discussion in 'Microphones, Speakers & Audio Processing' started by WB6QQR, Jun 11, 2017.

ad: L-HROutlet
ad: l-rl
ad: Left-2
ad: L-MFJ
ad: Subscribe
ad: Left-3
ad: abrind-2
  1. WB6QQR

    WB6QQR Ham Member QRZ Page

    How do I wire the 4-pin plug of the Astatic D-104 T-UP9 for use on the Kenwood TS-520S?
  2. KD8DEY

    KD8DEY Ham Member QRZ Page

    Pin 1 white audio +
    Pin 2 PTT Red
    Pin 3 Blue
    pin 4 shield (audio -)
    Black & yellow not used
  3. KA9JLM

    KA9JLM Ham Member QRZ Page

    I thought Black was PTT Ground. It would connect to pin 4, So that PTT current is not on the audio shield.

    Yes/No ?
  4. KD8DEY

    KD8DEY Ham Member QRZ Page

    T-up9 Blue is PTT common,Shield is only audio -(Neg). On radios that only have 1 common ground for audio - / keying, the shield and blue are combined on that pin. On the older 4 wire T-ug8 stand Black is RX unless you throw the switch inside to relay, then it becomes TX common (no blue or yellow wire).
    [​IMG] [​IMG]
    So Yes, IF it was one of the older style 4 wire mics, Black WOULD be the PTT common, BUT it goes to pin 3 not pin 4 (With the internal switch inside set to "R" relay) :)
    Last edited: Jun 11, 2017

Share This Page