[GreenKeys] Fw: Fwd: Jack (K2TTY/K0TTY) Hart's Motor Control Board

Sat Aug 2 06:27:19 EDT 2025

 Wow,
Alf, Mark, and Nick,
Thank you so much for the warp speed and detailed information.
Greenkeys are AWESOME.
73, Dave, K4MCG
   ----- Forwarded Message ----- From: Alf Fisher <alf at blunham.com>To: "dave7 at cox.net" <dave7 at cox.net>Sent: Thursday, July 31, 2025 at 09:34:26 PM EDTSubject: Fwd: [GreenKeys] Fwd: Jack (K2TTY/K0TTY) Hart's Motor Control Board
   Hi Dave,
 Here you go.
 Enjoy.

 73, 
 Alf G3WSD

  -------- Forwarded Message -------- 
| Subject:  | [GreenKeys] Jack (K2TTY/K0TTY) Hart's Motor Control Board |
| Date:  | Tue, 8 Dec 2020 18:18:00 -0500 |
| From:  | Steve Garrison <steve.n4tty at gmail.com> |
| Reply-To:  | N4TTY at ARRL.NET |
| To:  | Greenkeys <greenkeys at mailman.qth.net> |

How many of you have used this board?ï¿½ Iï¿½ve used a few of them, but none of them are readily accessible at the moment and I have a question about the schematic.ï¿½ I thought I still had a bare circuit board around here, but I canï¿½t seem to locate it.ï¿½ 

 ï¿½

If I could find the bare board I could try to resolve an issue with what Iï¿½m seeing on his schematic.ï¿½ Iï¿½ve attached his schematic and wondering if some of you could put your thinking caps on and help me figure out if what is on the schematic is correct or wrong.ï¿½ It has to do with the opto-isolator (H11D1) pins 4, 5, & 6 and how they are connected.ï¿½ It just looks wrong to me.ï¿½ Trying to see if it is just a mistake on the schematic, but the board itself must be right as I have several buried in working installations.

 ï¿½

Steve G./N4TTY

 ï¿½

 -- 
"I am a river to my people."
Jeff-1.0
WA6FWI
www.foxsmercantile.com

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