CW Paddles with PTT in jack

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Joey G. (Bonehead)

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Apr 18, 2026, 2:36:09 PM (8 days ago) Apr 18
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Hello,
I'm in the process of learning CW and have a question about connecting paddles.  I did a search but didn't find the answer I was looking for.  Can paddles with TRS (Dit/Dah) work using the PTT/Key input or is that only for straight keys and Mic PTT?  I thought I'd ask before just plugging it in.


Thanks in advance for any advise.

73
Joey
K5BHD

Julian White

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Apr 18, 2026, 11:47:01 PM (8 days ago) Apr 18
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I just built a keyer for my HL2 so this is all fresh for me!
The jack is configured as Tip=Dot/Key, Ring=Dash/PTT, and Sleeve=Ground. 
Use a stereo plug even with a straight key. When I tried my straight key with a 3.5mm mono plug it didn't like that. I triggered the PTT.

Julian White

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Apr 18, 2026, 11:51:01 PM (8 days ago) Apr 18
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You know what I said is just fundamentally wrong I guess.
The HL2 doesn't have a keyer. The tip=Key. There is no dot. there is no dash. You provide that.

DL1YCF

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Apr 19, 2026, 4:34:56 AM (8 days ago) Apr 19
to Joey G. (Bonehead), herme...@googlegroups.com
The HL2 has no keyer. If you want to use a paddle, you have to
use an external keyer (say, a WinKey keyer). The Key and PTT outputs
of the keyer then go to the TRS KEY/PTT input jack of the HL2.
It may not be necessary to connect the PTT output of the keyer at all.
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Joey G. (Bonehead)

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Apr 21, 2026, 4:41:07 PM (5 days ago) Apr 21
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That explains what I found.  I'll look into a keyer.

Thanks everyone for your assistance.

73 K5BHD

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