Martin:Using male to female adapters on CAT cables is usually where the 
problem lies. If you had the right cable for the job in the first place, I dont 
think you would have had any issues. You are trying to make the wrong cable 
work right and creating more complexity. I'd stop and wait till you got the 
right cable before you get too frustrated. 
    On Wednesday, January 15, 2020, 10:14:22 AM CST, Travis Burgess via BVARC 
<[email protected]> wrote:  
 
 I concur.  RT Systems has cables that are Radio specific and matched to 
yourradio.  They are the highest quality.
TravisK5HTB

No trees were harmed in the production of this message, however, a great many 
electrons were

terribly inconvenienced.


From: BVARC <[email protected]> on behalf of Terry Leatherland via BVARC 
<[email protected]>
Sent: Wednesday, January 15, 2020 6:45 AM
To: BRAZOS VALLEY AMATEUR RADIO CLUB <[email protected]>
Cc: Terry Leatherland <[email protected]>
Subject: Re: [BVARC] $30 cat cable still does not work I buy my cables from rt 
systems.   Work perfect and have great email support. 

Sent from my iPhone
On Jan 15, 2020, at 1:05 AM, Rod Neumann via BVARC <[email protected]> wrote:


I probably shouldn't be replying because I really don't know about FT450 or 
FT8.  But this question totally is befuddling to me as it doesn't say what's 
the problem. Maybe I can say one or two things that are helpful.
Here's an RS232/USB cable for $9 from Amazon.  It has amale DB9 plug on one end 
and a USB connector on the other.   If your radio has a female DB9 port, then 
you're good, otherwise buy a DB9 gender changer. Googling about the FT450, it 
says the RS232 Port on the radio ismale also, so you'll need a female/female 
DB9 gender changer... like this gender change for $5 on Amazon.
Then you'll need to install the driver software.  This can all get confusing 
with the fact that the computer will see this interface as a serial COM port, 
so you need to set up the right COM port after you plug in the cable to your 
USB on the computer.  Or maybe you got a disc with the radio and it has all the 
software needed?
And reading further about the FT450.... this Yaesu radio actually labels the 
DB9 port "CAT".  Huh?  Can anybody explain what CAT stands for where it applies 
to an RS232 serial communications port?  AFAIK the term CAT is about a cable of 
multi twisted pair.  In other words CAT cable is like saying COAX cable -- it's 
not about the signals going through it or what its used for, it is about the 
physical conductor construction of the cable itself.  Or is this something 
merely lost in the Japanese/USA translation and now we have this confusing term 
CAT being misapplied.  Is it a misnomer?  
Or have I been Rip Van Winkle and this word CAT is now standard and has a 
reasonable place in the vernacular, in application to what this is used for?

Rod Neumann  cell: (832)444-0192
ALLogic Inc. / AdorStorePO Box 217New Ulm, TX 78950


On Tue, Jan 14, 2020 at 6:10 PM Martin Blaise via BVARC <[email protected]> wrote:

I just purchased a $30 cat cable from Mouser and first of all they sent me the 
wrong thing. The end has male pins, not female. I did have a male to female 
adapter and I then plugged that into the rs 232 port on the back of the Yaesu 
450d.
However that still did not work. I plugged the cable into the USB port and 
heard click click click and the radio was stuck on transmit and I had to unplug 
the cable to get it unstuck. I got multiple com port errors. Same problem as 
before. Cannot control radio with cat cable. 

Everyone - I cannot fix this problem by myself. I guess now I need to send the 
cable back to Mouser and tell them its the wrong thing. Also, I have done 
everything in my power to try and figure this out. I need help. Either by 
teamviewer or in person. I am at a dead end. I cannot operate ft8 with a stuck 
transmitter. My phone number is 713-305-2148. Sorry to keep bringing this up, 
but it is really getting frustrating. Thanks. Marty, AG5T
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