wsprd(1) on Linux
The text 1a4c4f7635fb, as Debian 10 (Buster) shipped it.
is a decoder for K1JT's Weak Signal Propagation Reporter (WSPR) mode.
Flags it lists
-
-H -
-a -
-c -
-e -
-f -
-m -
-q -
-s -
-v -
-w -
-z