Loose antenna connection in radio

Peggy, Is the radio actually switching off or do you just loose the radio station. If radio is shutting off, there must be a bad wire/ plug connection, loose plug, or maybe bad ground.
If loosing station, have Arial/antenna connections checked, maybe upgrade to better antenna. Some stations just do not send out a strong signal which can also cause loss of station.

I don't know much about marine radios. I am a ham radio operator, but they are much the same, if you do not hear any static (with squelch control turned down), then I suspect you are correct about the antenna. It could be the antenna itself, or the coax line to it, or the connection point at the radio or at the antenna. You're stuck without being able to remove it. If you do and find nothing at the radio, you'll need to check the connection at the antenna etc. Good luck.

Radios not only need power but antennas. Check the antenna connection into the back of the radio and at the mast. If the rod antenna is loose it could be intermittent. It could also be the bottom clamp that attaches to the sheet metal of the car...if it is corroded or loose the same...

one of 3 things, either your antenna is not insight of a skies view to receive the signal, or its wire is broken at the antenna, but if you remove the antenna connection frequently it pulls the center wire out of the connection on the end that fits into the radio when its plugged in push on the conductor at the back of the plug and see if this helps,alos if connection is loose take a safety pin and carefully between the outer plug case ans the ground fingers around the center pin push these in so you get a better ground, and lastly try another substitute antenna, I have re-soldered my connections numerous times to fix this issue, delphi doesn't make a very rugged product, good luck

Sound to me like a ground problem but I need more information to corectly help you with your problem.

check the back of the radio, make sure than the antenna, connector is plug into the radio, if it is, then replace the radio.

Your antenna is built into the rear window. You should be able to see the connection in the upper part of the trunk under the back window. If it isn't loose there, I suspect your antenna wire has come loose from the rear of your radio, or else the antenna wire is damaged somewhere in between the radio and the rear window. You'll have to pull it out and inspect it.

Check the antenna connections on the back of the radio and on the antenna itself, it sounds like a loose connection

Problem: Radio Reception is bad to non-existant. AM is usually worse than FM.

Reason: Antenna connector has come loose, and needs to be reconnected. This happens when a passenger pushes the carpet toward the firewall and disconnects the plug.

Affected Model Years: 1997, 1998, 1999, 2000, 2001, 2002, 2003

Permanent Fix:

1. First check to make sure the antenna at the back of the radio has not come loose.
2. Remove the plastic cover on the front passenger door threshold held in place by three pressure clips.
3. Peel back the carpet on the front seat passenger floor.
4. Locate the coax antenna cable running along the side.
5. Reconnect the two pieces of antenna that have come loose.
6. Roll the carpet back, and re-install the threshold cover.

The antenna should be available from Sangean, or C.Crane.

To replace the entire antenna, about 6 screws from the back must be removed, and the back also removed.
Or you could replace it at the antenna's "elbow". However, this is almost impossible to do without loosing the 2 tiny washers. If you do loose the washers, the antenna will work, but will be loose, and not stand up and support itself.