Update NEWS with an async example

NEWS

@@ -15,7 +15,7 @@ Version 5.x -- future
 Version 4.6
         
 Version 4.5
-        * 2022-04-XX
+        * 2022-05-XX
         * enum meter_level_e is deprecated and will be removed in 4.6
         * Add SDRPlay SDRUno rig -- can now use Data/Pkt in WSJTX
         * Add ability to use cat_string to FLRig via the "w" and "W" commands
@@ -29,6 +29,10 @@ Version 4.5
           rigctld -A will produce a consistent shared key for any specific password that can used in \password and rig_set_password
           TBD The shared key can also be placed in .hamlib_settings 
         * Asynchronous rig data output handling to support transceive and spectrum data. Mikael, OH3BHX
+          Example for the IC-7300 to multicast on port 20001 and provide async rig information
+          rigctld --port=20001 --model=3073 --serial-speed=115200 --rig-file=/dev/serial/... --set-conf=rts_state=OFF --set-conf=dtr_state=OFF --multicast-addr=224.0.0.1 --multicast-port=20001 --set-conf=async=1
+
+Also, spectrum data output needs to be enabled with: \set_func SPECTRUM 1
         * See new set_conf option async for some Icom rigs
         * Multicast UDP packet output for asynchronous data. Mikael, OH3BHX
         * Rig state poll routine to serve commonly used data like frequency and mode from cache. Mikael, OH3BHX