I run my 7300 off batteries most of the time, and I've noticed that the radio will reboot if it tries to draw more power than the battery can supply (this only happens when the battery needs to be charged). I'd also suggest trying to run at lower power and see if the problem goes away. If it does, it may just indicate that you need a beefier power supply to run at higher power...
It's a guess, but hope you find it helpful. Jeff, W5JEF ________________________________ From: BVARC <[email protected]> on behalf of Praveen Manani via BVARC <[email protected]> Sent: Tuesday, January 20, 2026 8:49 AM To: [email protected] <[email protected]> Cc: Praveen Manani <[email protected]>; Fox Danger Piacenti <[email protected]>; [email protected] <[email protected]> Subject: Re: [BVARC] Icom 7300 RFI Problems Hi Mark, You most likely have already done this but just in case not; reset the radio to factory default, load a good config file from past/reconfigure settings manually and see if that make any good. I am a long time ham from canada here, brand new member to the club and this is my first email to the club group/forum, so a sincere Hi everyone! 73, Prem W5/VE6XMX Sent from my iPhone > On Jan 20, 2026, at 8:37 AM, Fox Danger Piacenti via BVARC <[email protected]> > wrote: > > 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 >> ________________________________________________ >> Brazos Valley Amateur Radio Club >> >> BVARC mailing list >> [email protected] >> http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org >> Publicly available archives are available here: >> https://www.mail-archive.com/[email protected]/ > > ________________________________________________ > Brazos Valley Amateur Radio Club > > BVARC mailing list > [email protected] > http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org > Publicly available archives are available here: > https://www.mail-archive.com/[email protected]/ ________________________________________________ Brazos Valley Amateur Radio Club BVARC mailing list [email protected] http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Publicly available archives are available here: https://www.mail-archive.com/[email protected]/
________________________________________________ Brazos Valley Amateur Radio Club BVARC mailing list [email protected] http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Publicly available archives are available here: https://www.mail-archive.com/[email protected]/
