Hi Doug
I felt CQWWCW coming up, so I took my serial cable for JST-245D out and
checked for its configuration for you, hi.
Typical Null-Modem cable is made in RED cable and so obvious. Another
alternative (my case) is to use "regular" modem cable with Null-Modem
adapter (this cable was originally used with KAM+ for Packet). I think
they are both available at Radio Shack.
PC end (DB9 female, connecting COM port: male)
JST-245 end (DB25 male, connecting RS-232C: female on JRC)
DB9 female DB25 male
pin 1 - pin 4 & 5
pin 2 - pin 2
pin 3 - pin 3
pin 4 - pin 6
pin 5 - pin 7
pin 6 - pin 20
pin 7 - pin 8
pin 8 - pin 8
pin 9 - NC
If you are using 25 pin ~ 25 pin, hope you can translate my connection to
your case. Obviously the cable configuration in JRC's manual is wrong.
I have never done that. I just brought up WL (10.21K), changed Setup and
click COM1 for Rig > JRC JST-145/245 > AUTO, and changed Radio > Number of
Radios to 2. Sure enough WL started tracking JST-245's mode and frequency.
I have not try to check PTT on COM port, hope this works too.
73 (and Gud Luck in CQWWCW), Jon nn5t@arrl.net
-----Original Message-----
From: W0AH@aol.com [mailto:W0AH@aol.com]
Sent: Thursday, November 23, 2000 1:07 AM
To: nn5t@attglobal.net
Subject: Re: [WriteLog] Writelog and Japan Radio JST-245 HELP!
Hi Jon,
Thanks for your reply.
I'm more confused now than before. On page 40-41 of my JST-245 manual an
RS-232C cable is described as having 25 pin male connectors on BOTH ends and
TABLE 6.3 shows pin 20 being used on both ends of the cable.
I'm confused by the "crossover connections" Table 6.3 shows, 2 to 3, 3 to 2,
4 to 5, 5 to 4, 20 to 6, 6 to 20 if I am reading it correctly.
To make things more confusing, I have been told by several that I must
connect to the serial port of my Fujitsu laptop, and the serial port jack is
a 9 pin male! This contradicts the JST-245 manual.
No, I haven't tried to send CW from the computer. I wanted to control
fequency and mode before I tried to send CW.
I don't know what a null modem cable is. I guess I don't even know what an
RS-232C cable is.
Doug W0AH
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