RS232 DTR and RTS pins

[kd2goe]

I'm using the DTR- pin2 and RTS- pin7 pins to control some radio keying and for RTTY "FSK"
on my 3 com-ports in my PC I can't get the RTS line to go high it is at 0v the DTR pin works fine I can switch that

Running Windows 10 I have tested the RTS line with wsjt-x, MMTTY and CwType this has all worked before.

 

[kd2goe]

i meant pin 4 not pin 2 on DTR

 

[tweiss3]

What radio are you doing this with? You may have to modify some settings in your radio and or split the comport with software.

 

[jonwienke]

Some cheaper com ports only have the data in and out pins active, and don't have any active circuitry (or even a connection) on CTS, RTS, etc.

 

[kd2goe]

What radio are you doing this with? You may have to modify some settings in your radio and or split the comport with software.

TS-2000 running in to the ACC port. i have a control box this all worked fine for years




Well it started working last night There is some thing that's messing up the port on my PC but I have no clue what it is just yet..
it's leaving the DTR pin alone but messing up the RTS pin.

right now if com3 RTS pin stops working com 4 will work till it wont. then ill plug it in to com 3 and the RTS line is fine.
all this time the DTR pin works fine.

 

[tweiss3]

This sounds like a driver issue. Run windows update and double check your drivers. Also, try a reboot.

I had some serious issues starting winter field day due to updates that happened overnight and a reboot fixed them.