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Author Topic: Parallel Port Pin 17 CW keying with HRD  (Read 3393 times)
WX3K
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Posts: 12


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« on: October 19, 2012, 08:38:52 PM »

Hello all,

I have HRD loaded and all works well EXCEPT for the PARALLEL PORT I have interfaced for CW keying. I am using a simple 2N2222 driver to key my IC756PROIII. The interface works perfectly with N1MM but when I run HRD it doesnt. It appears the LOGIC state is reversed. HRD keys a LOGIC low for CW characters instead of keying a LOGIC high like N1MM does. Really odd.

I have the latest version of HRD running. Anyone else have this experience ?
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Stephanie WX3K

Technical Specialist - EPA
W9GB
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Posts: 2659




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« Reply #1 on: November 04, 2012, 10:41:51 AM »

Send that REQUEST (ability to change logic switching) to the HRD developers for version 6.
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AA4PB
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Posts: 13032




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« Reply #2 on: November 04, 2012, 01:07:36 PM »

Use two 2N2222 to invert the keying signal if it can't be inverted by a HRD software setting.
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