I cant talk on any frequency over 148.000 anyone know why?!

First of all, technically, you can't use this radio to talk to anyone other than ham radio- that being said, if you want to proceed at your own risk. Ok, is your work radio an analog radio? Is it narrowband FM? Is it digital MOTOTRBO? Last two will make if difficult. Digital is impossible. Next, find out the exact transmit and receive frequencies for your radio. They may not be both the same if you have a radio 'repeater' your input frequency could be 5MHz higher than your receive frequency. And last- you need to know if your system has a "PL" tone (CTCSS, or DCS) subaudible tone that will break the squelch. So there are several variables that you will need your plant supervisor to relay to you. Good luck. You can probably get much of this info on line from radio reference.

1. Make sure both radios are transmitting and receiving on the same frequency (no repeater offset).
2. Either turn off CTCSS tone or make sure both radios are set to the same tone on both Tx and Rx.

I assume you are talking about the RF A/B lights. If they do not come on, check the frequency to make certain the transmitter matches that receiver. If the frequencies do match, then the system will need to be repaired.

Check your Code setting. Both the frequency and the code must be identical for the units to communicate. Shut off any special features and keep the radios at a simple setting until you get communications back.

The Yaesu FT1900R is an Amateur (Ham) Radio 2-meter Transceiver. Although the receiver covers from 136-174 MHz, will only transmit from 144-148 MHz. Please note that you do need an Amateur (Technician Class or above) License to transmit on the 2-meter Amateur Band. You no longer need to pass a Morse Code test to get an Amateur License. You still have to pass a written exam, but that isn't difficult if you are willing to study a bit. Contact your local Ham Radio Club or the American Radio Relay League (A.R.R.L.) for more information.

verify, either the operating frequency is not pair/same with the other radio, check the default frequency, tx/rx on the simplex mode should be the same frequency

I would suspect that the frequency setups don't match.
The only way to know on the TK 3101 is connect it to a computer.
I have the cord and program for the TK 3101.
Let me know if you need help.

dear ur out going speaker is disturbed which send voivce frequency..
plz let tha repair

Shit I don't know.

Call your local Radio Shack. They can either program it for you or suggest someone who can.