Hello,
if it is still of interest and the weak IR-output a problem:
I measured the UCR2 dock, looked into the Harmony blaster and built an very simple own “blaster”, which is functioning very well.
The full (German) document is located here.
The history is in the thread “Deutsches Forum”
Scroll down the chat, please, for the actual version.
Cheers, tiki
edit: updated links