[RSM] Serial Port Testing Question

[Jack Parker]

Tried PuTTY and it did not work. I must find a DB9 connector and build a 
loop-back test jig. AFIK the radio/PC cable should be a 
straight-through. Lots of bad info on the "interweb". ;)

I'll keep plugging away at this and hope the TS-570D's serial port is okay.

Thanks and 73,

On 1/25/2026 2:47 PM, Jessy Blanchette wrote:
> Your welcome!
>
> Another quick tip,  on the rs232 adapter or physical serial port on 
> the PC you can also do a "loopback test" jumping the TX and RX lines 
> together.   When the rx / tx serial lines are looped ,whatever you 
> type in Putty will echo back right away -- then you know the host/pc 
> serial port working ;)   If it's a one wire test, make sure hardware 
> flow control is disabled in Putty.
>
> https://www.instructables.com/DB-9-RS-232-Loopback-Plug-Windows-and-OS-X/ 
>  overkill tutorial, but explains this in more detail.
>
> 73 es GL!
>
-- 
Jack, VA4JP/K0JP
Steinbach, MB
EN19pm