NRN6702A 306 = DECODER BOARD, STORED VOICE, SELECTIVE CALL, DIRECTOR II - Manufactured in Feb 1993
NRD7193A 9644 = RECEIVER BOARD, 1-FREQUENCY (148.000 - 160.000) - Manufactured in Nov 1996
NRN7622A = Stored Voice Module - 4 message of 8 seconds each
The pager is currently setup for tone set 2 Option R130 (A-B interrupt, A-C continuous, Long C continuous)
It appears the traces for 3C8 and 3C11 are in fact solder, so you may be able to de-solder them rather than cutting them. Try some solder wick, that should do the trick.
It's also setup for auto-reset, which means after the message has been stored, the pager will automatically go back into quiet standby mode until the next valid page is received. Depending on how the agency you listen to is toned out, this might be a problem. If the carrier drops between the tones and the message, the pager will reset and you won't hear the message, nor will it be stored properly.
It is possible to modify the Director II SV so it acts like a pseudo-Minitor II SV. If you are able to place the function switch in position 2 or 3 and you can monitor all transmissions on the frequency without "white noise" and without having to push the reset/monitor button, then the board was probably modified.
The bottom line is that your results may vary with this pager. If what you are saying about being able to monitor the frequency is accurate, then it was modified and it's a crapshoot as far as how the pager will behave. It's probably not the best idea to rely on this pager as your primary means of alerting, if you're a member of an agency. Good luck with it.