UP-FM is considered to be a system of deliberately put low-control (max 10W) FM transmitters on the UP Diliman grounds and in different spots. Its source substance is gushed from a DILC server. The fully automated audio stream is also available online at up-fm.org
If the Radio is extremely choppy and stops every 5 seconds, try listen to this Radio at different time.
Not all Radio Stations function for 24 hours everyday. If you can't listen to any Radio, try to listen at different time, as the Radio Station may stop during midnight according to its own country time zone.