Like many, I'm also fighting to learn hex codes for my
Denon 4308. I followed along with Tgrugett's example
above, but got a little concerned when the code he used
for the Device Code left and right digits (Genre 1 and
Genre 2) did NOT match the Genre codes I'm seeing for
switching to XM in Denon's PDF of discrete codes for
the 4308, located at [Link: usa.denon.com].

In that document, I'm seeting Genre1=1110 and Genre2=1010
for XM. I worked my way through the rest of the example
using these numbers (which leads to Device 7.5, instead
of the example's 4.1), and generated a hex code that bears
little resemblance to the one learned by my remote, and
which doesn't work (though the learned code does). So
what did I miss? What am I reading wrong in Denon's code
listing?

Obviously, my real problem isn't in generating an XM code;
my learned code works. I was just following the example.
The learned code that does NOT work is the switch to
DAB/HD RADIO (the name in the IR code document), learned
from the DTU key on the remote. As it turns out, that's
Function 715 (vs. XM's Function 714. used in Tgrugett's
example).


So in an act of faith and desperation, I plugged in Tgrugget's
Device 4.1 and Function 714 to MkHex and generated a code
that *does* successfully switch to XM. With that encouragement,
I plugged in Device 4.1 and Function 715, and generated
hex code that *does* switch to HD Radio (hex code below
for anyone else searching).

So, I solved my presenting problem, but would still like
some education as to what I'm reading incorrectly in the
PDF document referenced above. If I can't figure out
the Genre1 and Genre2 codes correctly, then the rest of
the example is pretty much a dead-end for me.

And for those who came here searching for the switch to
Denon 4308 HD Radio hex code, here it is:

0000 0070 0000 0032 0080 0040 0010 0010 0010 0010 0010
0030 0010 0010 0010 0030 0010 0010 0010 0030 0010 0010
0010 0010 0010 0030 0010 0010 0010 0010 0010 0030 0010
0030 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010
0010 0010 0010 0010 0010 0010 0010 0030 0010 0010 0010
0030 0010 0010 0010 0010 0010 0010 0010 0030 0010 0030
0010 0010 0010 0030 0010 0010 0010 0010 0010 0030 0010
0030 0010 0010 0010 0030 0010 0010 0010 0010 0010 0030
0010 0010 0010 0030 0010 0030 0010 0030 0010 0010 0010
0030 0010 0030 0010 0ACE

--Gene