I use a SB to control the height of a vertical antenna which is located about 10 meters from the ham shack. I have a USB connection to the SB via one of those USB to CAT5 extenders (https://www.amazon.com/gp/product/B01FHTCH68/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 This works fine to to send and receive data but it fails when I attempt to upload compiled code, receiving the following error "Message from component IMTMemtool:Can't connect to target." I tried fiddling with a few of the Memtool settings, but to no avail. I'm looking for guidance from anybody who has successfully uploaded using this, or a similar extender.
That's a thought. I just tried a 5 meter active usb extension cable which worked just fine. Now I just need to buy a 10 meter version and see if I can snake it through the buried conduit. Should work. If you're interested in the antenna, here's a link: www.qrz.com/db/K6DHL
Supplying an external 9 volts resolved the issue with the Amazon Basics active extender and I can now upload and remotely reset the board. It did not, however, fix the problem with the usb/cat5 extender. But I'm a happy camper. All I need to do is replace the cat5 run with the active usb extender, since the remote SB is already running off of externally supplied 9 volts, and I should be good to go. Thanks for the assistance.