I am sure the answer is yes but before firing up the soldering iron.... Can one use pin 4 as a CW (bug / straight key) input ? Is there any downside?
Yes you may use that port with no side problems.
It is direct keying, single contact, no built in keyer, no speed control, etc. There are "break-out" boxes that expose all contacts to mini screw down terminals. Note: The Flex connector is mounted "upside down" to expected; be aware when counting pin-outs.
It may also be driven by a single transistor pull-down connected to a COM ground and DTR or RTS ports.
I use it to connect N1MM+ WinKey to the 6000 for macro keys. See N1MM+ documentation for sample circuit. It remains as the only wires between the computer and 6000, except for networking.
I made an interface box for the accessory connections that makes it easy to connect a straight key or bug. Also it can be connected to a PC serial port if you want to use a program to do the keying. Here are a few pictures below. I also have a document with more details on the parts. There is also a picture below of the "breakout" connector if you prefer that route. Also if you are considering using a DB15 video cable, be careful, the wiring may not be compatible. More about that in the document also.
eMail me if you want a copy of the document.
Regards, Al / NN4ZZ
al (at) nn4zz (dot) com
Both breakout devices look convenient with the Winford being fairly small although one would have to enclose it for protection and RF leakage. May order a Winford to use for testing. I am concerned with RFI/EMI. I assume your setup didn't have problems in this regard,
The 3.5mm speaker connection seems a weak point and I have that cable secured to an adjoining cable so the internal 3.5mm jack is not stressed. Will be moving the speaker connection to the ACC.
I ordered a DB15HD connector that has ferrite beads built-in (filtered) as well as some non-filtered versions and metal hood. (oddly, there were no DB15HD connectors at the Yuma Hamfest this weekend). The wiring will be twisted pair with foil shield so the result should be bullet proof to RFI/EMI. A mono-channel speaker and CW key are only accessories to be interfaced. Maybe later the electonic keyer.
Thanks for your details and taking the time to post... Much appreciated.
I have used this method to connect N1MM to my Flex 6300 so I can key it without using CWX. I built the simple circuit, as described in N1MM's website, with a transistor and using the serial port to control it.
I have encountered two issues and wanted to see if anyone had the same problems:
1. Pin 5 on my Flex 6300 accessory port does not seem to be ground. I have confirmed with a continuity check against other ground pins and the chassis. I have also tried to wire Pin 5 to use as the ground for the key.
2. After I transmit using the key on the accessory port, the MOX continues to be ON, with the red LED ON on the front panel, but the radio goes back to receive and I can hear the background noise and appears to work normally. I believe this is a bug in the software.
Any feedback is appreciated.
Eduardo - KC8R