John, K1JRO reports:
The 146.685 Plymouth, Massachusetts Genesis Repeater, N1ZIZ, as of April 1st, 2018 has a new PL tone. The CTCSS has been changed from 82.5 Hz to 131.8 Hz. It is recommended that both encode/decode be changed on all your radios, since the repeater is transmitting both analog FM and digital. This will help listeners to avoid hearing the noise digital operation produces on the analog side.
Short Story: Change your PL associated with the 146.685 N1ZIZ repeater to a CTCSS of 131.8 Hz post haste.
Please note the Eastern MA Hospital Net will continue to use analog communications.