Cannot get a squelch or receive - Uniden BCT8 Base Scanner

Check the squelch setting on the receiving unit. If it is set to low, this can happen.

Usually after receiving something, the receiver will stay unsquelched as the open and release points on most squelch controls is different. If you set the squelch a little bit higher, this will not happen.

Your RF gain control needs to be turned all the way up to be able to receive signals and if you are on one of the HF bands like 40 meters or any HF band the squelch control needs to be all the way off! You do not use squelch on HF! When on VHF or UHF then you would rotate the squelch control just to the point that the background noise stops and go no further. Higher squelch settings will only block weak signals and your radio will be deaf! Squelch control rotated just to the point the background noise stops! NO SQUELCH ON HF. Turn the squelch all the way off on HF!

if you have a receive tone squelch or digital receive set you wont hear anything unless the transmitting radio is set to transmit that

Have you ruled out a receiver PL setting problem?

On all channels, or on one channel ? Some channels are "birdie" channels, check your user manual. Others are problem channels receiving false signals from computers, monitors, receivers, internet equipment, FAX machines, etc. If your in conventional mode, if in Digital mode the squelch is set by the processor, and I don't believe the squelch has any effect in that mode.

Power-save mode means the radio is being turned on and off repeatedly, to save power. The radio turns on, & if it hears any signals (i.e., if squelch circuit determines a station is being received), it turns on the speaker; else it turns off again to save power. So, squelch and power-save modes work hand-in-hand, and your problem is squelch circuit is either set too low, or a station is being received by the receiver. Download/look at the owner's manual and adjust the squelch circuit for a higher setting, and it should go into power-save mode again.
Good luck.

what time of day are we talking here? usually skip is so heavy from 0800 until 1600 that no radio has a chance of transmitting or receiving.If you turn the squelch the other way what does it do?

In what way. Does it never receive? If that's the case, chances are the CTCSS (Tone Squelch) is on. If it never mutes the speaker, the squelch circuit may be defective.

Try adjusting the squelch level. If the squelch level is too high it mutes the receiver.

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