Hi Mark,
What transmission power are you running FT8 at? FT8 screams hard-- it'll
max out whatever amount you give it, unlike using voice and some other
modes. So issues with RFI/reflection will be accentuated. Does it work
with lower transmission powers? Does it happen on all bands?
Best,
Fox
On 1/20/26 07:40, Mark Triplett via BVARC wrote:
Greetings everyone! New member and a one-year ham here!
I have a used Icom 7300, about 5 years old, that is experiencing random reboots
when using the digital modes such sa FT8. With alll standard radio modes,
mainly phone, there are no problems at all. When using FT8, and only during
transmission, it will randomly do a hard reboot. The radio worked flawlessly
for about 4-6 months after purchase and all this began.
I’ve used different USB cables, added bead ferrites, and most recently, I used
some of the larger ring type ferrites, like the FT240-3, all with the same type
of results. Most times it will work as expected for maybe an hour then start
the reboots. Sometimes it just won’t work at all and immediately reboot on the
first transmission. I’ve also used different computers and different operating
systems. I’ve seemed to have isolated it to the radio itself. And most likely
the USB connector.
I download the service manual and determined that going in to reflow solder on
the connector for me is a no-go. The buried surface surface mount connector is
beyond what I’d care to work on. I’m not really interested in learning how to
rework with a air station on something like this.
Before I box it up and ship back to Icom for an expensive repair, and it’s of
course, it’s out of warranty, does anyone have any other things I can check
before I do? I fear that’s my only choice.
Thanks!
Mark Triplett
K3MBC
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