![On the Icom IC-E90, would anyone happen to know how to trigger PTT remotely using the SPK jack Remote pin? My first guess would be to ground the pin to trigger PTT? On the Icom IC-E90, would anyone happen to know how to trigger PTT remotely using the SPK jack Remote pin? My first guess would be to ground the pin to trigger PTT?](https://preview.redd.it/05n6efp5sq991.png?auto=webp&s=6b546ca62da8b5a3829516ca1f86f471175eda5b)
On the Icom IC-E90, would anyone happen to know how to trigger PTT remotely using the SPK jack Remote pin? My first guess would be to ground the pin to trigger PTT?
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