[Elecraft] K3S PTT using DTR/DTS issue

[ae4pb at carolinaheli.com]

So my new K3S is running well and I'm setting up my software and see that it
can do digital modes and control PTT using a comm port. I open my owners
manual, page 20, which says I can use that connection for control and PTT.
I'm already using the USB for control so will just use it for PTT. I have a
USB to serial adapter so I install it, plug in the RJ47 connector to the
rig, mate the DB 9 connectors and immediately smell burning components,
Quickly disconnect the DB9.

 

I was previously using this serial adapter successfully on a YAESU FT-897D
before I sold the rig to get the K3S.

 

So now the questions:

1.   Why did this apparently experience an issue? I see nothing in the
manual to indicate this requires anything but a standard connection.

2.   How much damage has been done to my brand new k3S using the supplied
Elecraft cable and a known good previously good USB to Serial cable (MFJ I
believe).

 

I'm heartsick. Being the type of person who checks and double checks things
I can find nothing wrong with what I did and yet apparently I've damaged
something.

 

Tomorrow I'll pull the cover and check the board. 

 

 

Jerry Moore

AE4PB, K3S - S.N. 010324

An Amatuer is - Considerate, Loyal, Progressive, Friendly, Balanced, and
Patriotic.