HN9000 - Code 30 - Too Many Bad Slots

Hello. For the last few days, I have been getting "Code 30 - Too Many Bad Slots" after the modem starts up. It will go into the "Code 25 - Terminal is Fully Operational" first, but there will be no connection, through a browser or pings. After a few minutes, it will change to the Code 30.

During the daytime, it will usually reconnect after several minutes, going to code 25 and staying there. I will then have Internet all day.

After dark, however, if the modem is off and I start it back up (I am off-grid, and shut it off to save power) it will go into a Code 30 and stay there. There will not be a connection until the next morning typically.

This happened about a month ago for a few days, then went away. Now it is happening again. Saturday night (May 16) and last night (May 18) there was no connection at all. Monday night, it finally re-established just after midnight, I think.

When the system was first installed, like 5 years ago, the Receive Signal Strength was 160 to 180 all the time. Now it hovers between 98 and 114 typically, and I have noticed that when the connection problem occurs, signal strength is between 90 and 95.(Though during storms, I have seen it as low as 70 and still had a connection.)

All the wires seem to be in good shape, and it works fine in the daytime for the most part. Could the radio be failing? Or does the "Too Many Bad Slots" refer to communication problems with the old Spaceway?

If repairs are necessary, I think it would probably be better to upgrade to the Gen 5 system. It is a long, long way to roll a truck out here. I am hoping it is just a temporary glitch though. Any input would be appreciated!

Thanks!

David