Motorola Minitor IV, V, and sometimes VI are available pretty cheap on eBay. Last time I looked a used VI was still pretty expensive, but now that the VII has come out, the prices may be dropping. Get them in your frequency range and buy a programming base for less than $100. Programming software is free. You may have to run the V software in XP compatability mode on your Win10 or Win11 machine. Purchase an amplified charger base (not the little standard charger) to get the features you want. An example is the RLN5869C for the Minitor V. It has an external antenna BNC connection and an amplified speaker. Some of the Minitor bases (maybe all?) have relays that can be used to turn on a notification/safety light, or turn on other devices.
There is a used/refurbished market for these pagers and bases and you can also catch them on eBay. Be careful selecting used Minitor pagers. You can't just grab any VHF or UHF labeled unit and program it for your frequency. They may say VHF or UHF, but because of the tiny tuned antennas and circuitry, they are for a specific portion of the VHF or UHF band so that they will be more sensitive to the programmed frequency. I have bought a couple of used ones on eBay for my guys that are sick of toting radios and they were misidentified by the seller for the correct portion of the band I needed.
In addition, there are versions of the V and VI that take multiple tones. If you have a general tone for your station and say you are also a member of a specialty unit such as HazMat or Swiftwater that uses a different tone on the same frequency, these versions will be handy. Some of the V's and I think all of the VI's have stored voice capability. You can set the recording duration after the tone in the programming software. To recognize the V's with this feature, they will have a little button on top of the selector knob. They are not always labeled as stored voice pagers on eBay so look at the pics. There are also versions that recieve two frequencies within the band.