Many modern software defined radios offer the ability to pre-record voice transmissions to help you avoid losing your voice from constant announcements. This functionality is extremely helpful during emergency nets where information must be repeated numerous times at certain time intervals. The below videos do not reflect the views and opinions of the ARRL as a whole or this section and provided as is for your reference.
ICOM 7300 (and other supported models) – Video by Ham Radio Concepts
Yaesu FT-991 (and other supported models) – Video by Mike. E
FTDX10 (and other supported models) – Video by N4HNH
Flex Radio – Knowledgebase article
Many of these radios also support QSO recording so that you can replay information you may have missed.