Keyboard Shortcuts
Likes
Search
KPC-3+ USB losing the port
|
Have two KPC-3(+ USB) units. One is the KPC-3 with the DB-25. The other is the KPC-3+ USB.
The -3 works fine and has no issues. The -3+ USB keeps losing the USB connection to the computer on a regular basis. It will run
for perhaps 45 minutes to an hour, then nothing.
?
Both units i set up the same way .. set both units to KISS mode then run the software with KISS-only enabled.
?
I've searched and think i am missing a step/command somewhere. Anybody has this setup working, please let me know how you did it.
?
I appreciate it and thank-you.
?
Paul
N6MYA |
|
Paul,
Download the parameters from both and save them. Reset the 3+ then load in the parameters from the 3.
What happens?
___
Sent from my two-way wrist watch
73 de W3AB/George
On Nov 23, 2024, at 17:11, Paul Chambers <veast1@...> wrote:
|
开云体育RF in the shack? Often a cause of strange intermittent USB disconnects... What operating system are you using on the PC? Can you see any evidence that the USB/serial port changed after it seems to have disconnected? (Windows Device Manager)? COM1 changed to COM2 Or (Linux)??? Have a terminal session running somewhere visible (you can shrink the font, so any such session doesnt "hog" the display) with "dmesg -wH" running, and see what happens at the bottom of the list.? That will show any "re-enumeration" activity (or other weirdness) in real time. It may not be the PC end of the USB cable that has the issue if
the KPC-3+ has USB/Serial built in.? They would not be the first
company to "update" an existing product by adding USB, and
introducing a new RF Susceptibility issue. 73 Dave G8KBV.
|
|
On Sun, Nov 24, 2024 at 8:13?AM Dave_G0WBX via <g8kbvdave=[email protected]> wrote:
That was my first thought as well. I recently had a similar problem with an older Kantronics TNC that is not USB, BUT I was using a Keyspan USB to serial adapter with it. The Keyspan uses off the shelf USB cables, so I found one in the stash of stuff that had a good sized toroid on it - the one I was using didn't have one at all. Problem solved - did not happen after swapping out the cable. In my case the OS was Linux, and the USB device would just disappear usually within a few hours. 73, Lee K5DAT
|
|
I'm sorry, guess it would have been better if i had given more info about the system.
?
OS is Ubuntu on several different laptop computers ranging from Ryzen 5, 7, & 9 as well as Intel I-7,
does it with all of them.
?
The radio is an ICOM T2H with an external antenna that is not set up for transmitting, no cabling to the
microphone or to the PTT ... RXD and ground only.
?
I had thought about copying the settings in the tnc's, however they are different ... the +3 USB is the latest version
and the plain KPC-3 is, i think, version 6.0.? Also, while i have various other VHF Marine radios as well as HF Amateur
radios aboard, none of them are operating while i am trying to get this system up and running.
?
Please note that this setup is used on my boat as an aid to navigation as an adjunct to OpenCPN and will never be put into transmit.
?
It may be that i will just need to deep 6 the +3 USB and find an older unit like the plain -3 i already have.
?
Thank you for your suggestions and help. |
开云体育Hi again. Ubuntu AFIK has some power managing features, but they may be dependant on the platform hardware capabilities too. Personally I can't get on with the Ubuntu UI, so I run LMDE (Mint without the Ubuntu bits.) Running on an older Dell XPS laptop, the Cinnamon desktop power
management features work well, to the point of annoyance if using
for example a SDR dongle! On a HP small format desktop, the CPU power management seems to
work, but it leaves the USB ports powered all the time, but that
may also be a "feature" of the PC hardware and/or BIOS of course. I have found that running? $ dmesg -WH ? in a terminal session, and then trawling through the list after something odd happens, can give some clues, but it can be serious eye aching stuff! Or pipe that to a file, and grep it later, if one knows what to
look for.? Pulling the USB lead and seeing what happens to find a
suitable clue to search for might work. As you are "afloat", there could still be some RF about, from other vessels nearby at times?? Parhaps a TinySA running in peak hold mode might help too?? (And that's another distracting Rabbit Hole to drop into if you're not careful!) 73.? Hope the wet stuff stays outside the hull! Dave G8KBV.
|
|
Thanks Dave. All of my lap tops keep the USB ports powered ... i know i could shut them down when the computer is off, but i keep GPS
dongles connected even when they are off.? I'll try the dmesg -WH and see what i find.
It is strange that the KPC-3 with the FTDI serial to USB dongle has no issues, but the -3+ USB does.
?
Paul N6MYA |
开云体育Hi again Paul. the dmesg output, as well as that from? "$ lsusb"? will identify the maker of the USB chip used by the KPC-3+ (I'm guessing, but adding a common USB/Serial bridge chip to an existing product design, is a common easy(ish) way to add such functionality, but sadly such things are not all equal in their capabilities.? In particular, to my knowledge so far, only FTDI provide a unique serial number, that is "Oh So Useful" in UDEV rules, to differentiate between similar products that use the same bridge chip!) 73. Dave G8KBV.
|
|
Hi Dave, I think you have identified the problem. I use lsusb all the time to see whats what. Ill give that a go as i am sure it is not an FTDI chip, if i am remembering correctly. Thank yo again.
On Tuesday, November 26, 2024 at 01:57:35 AM PST, Dave_G0WBX via groups.io <g8kbvdave@...> wrote:
Hi again Paul. the dmesg output, as well as that from? "$ lsusb"? will identify the maker of the USB chip used by the KPC-3+ (I'm guessing, but adding a common USB/Serial bridge chip to an existing product design, is a common easy(ish) way to add such functionality, but sadly such things are not all equal in their capabilities.? In particular, to my knowledge so far, only FTDI provide a unique serial number, that is "Oh So Useful" in UDEV rules, to differentiate between similar products that use the same bridge chip!) 73. Dave G8KBV.
|
GEO BADGER