Here are some miscellaneous Links that may or may not come in handy at some point. FYI, If you decide to attempt any modifications to your HTX-252, you are doing so at your own risk.

HTX-252 Owners Manual

HTX-252/Albrecht AE540 Service Manual

HTX-252 Specifications

Information on expanding the TX of the HTX-252 to 136-174MHz (I have not personally tried this.)

Slow Squelch Fix?

There are a few mods online where folks have replaced the display light bulbs with LEDs. One of my back light bulbs is burnt out so this may be my next mission in keeping this trusty old rig fully operational. More on that coming soon…