My take of someone else post. Sorry, I forgot who.
import meshtastic
import time
count = 0
interface = meshtastic.StreamInterface()
while 1:
str = time.strftime("%a, %H:%M:%S", time.localtime())
str =str + " \n\rDennis CQ CQ CQ " + ("\n\r message count = %d " %count) + “\n\r”
interface.sendText(str)
print(str)
time.sleep(60)
count += 1