diff -r 60b0754e45de chirp/drivers/anytone.py
--- a/chirp/drivers/anytone.py	Thu Oct 24 15:46:01 2019 +0200
+++ b/chirp/drivers/anytone.py	Thu Mar 12 19:42:47 2020 -0700
@@ -30,6 +30,8 @@
 
 LOG = logging.getLogger(__name__)
 
+STEPS = [2.5, 5.0, 10.0, 12.5, 20.0, 25.0, 30.0, 50.0, 100.0]
+
 _mem_format = """
 #seekto 0x0100;
 struct {
@@ -205,7 +207,7 @@
     response = radio.pipe.read(3)
     if response != "QX\x06":
         LOG.debug("Response was:\n%s" % util.hexprint(response))
-        raise errors.RadioError("Unsupported model")
+        raise errors.RadioError("Unsupported model or bad connection")
     _echo_write(radio, "\x02")
     response = radio.pipe.read(16)
     LOG.debug(util.hexprint(response))
@@ -354,6 +356,7 @@
         rf.has_bank = False
         rf.has_cross = True
         rf.has_tuning_step = False
+        rf.valid_tuning_steps = STEPS
         rf.has_rx_dtcs = True
         rf.valid_skips = ["", "S", "P"]
         rf.valid_modes = ["FM", "NFM", "AM"]