I’m more confused after reading your second post.? The link you provide below is to modify a Micor PL encoder so that it doesn’t send reverse burst.? It doesn’t cover what is required to install a PL encoder into a radio that has never had one before.?

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To add a PL encoder to a previously carrier-squelch exciter, you have to cut a jumper on the exciter in order for the PL encode board to take control of exciter keying voltage as it needs to be able to keep the exciter up longer than the incoming PTT for the duration of the reverse burst (whether or not you make the mods in the link you referred to are irrelevant in this regard).? I don’t remember what the jumper number is (i.e. JUxxx) on the exciter board, but it’s whatever jumper that goes between PL encoder board header pins 1 and 4.

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Also, depending on the vintage and/or split of the exciter board, you may have to install a jumper on the exciter board to route the encode PL tone to the audio amp/summing network that drives the varactors in the channel elements with the composite voice and PL tone.

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I’m on the road and don’t have access to my paper manuals so this is from memory (and distant memory at that).? Look at the manual, and/or maybe Kevin’s memory or someone else’s can confirm what’s left of mine.?

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??????????????????????????????????????????????????????????????????????????????????????????????? --- Jeff WN3A

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