I don't know which Niles repeater I use; I'll check and report later.
However, there are two kinds of repeaters; one is "transparent" the other is not. Niles makes both kinds, and after unsuccessfully experimenting with the "non-transparent" version, I had to change to the "transparent" version.
Some words of explanation:
The word "transparent" here does not refer to optically transparent, but rather to electronically transparent.
The "transparent" Niles repeater system picks up an IR signal at the sensor, and repeats, nearly exactly, this signal at the IR blaster in the remote location.
The "non-transparent" version picks up an IR signal at the sensor and converts it to an IF frequency which can often be adjusted within a specific range before sending it on to the IR blaster. Unfortunately, different components like to see different frequencies and in my case, using the "non-transparent" Niles system, I was unable to adjust the IF frequency to suit both the RCA DTC100 and other components in my system. As soon as I changed to the "transparent" system, I had no problems with any of my components.
My advice is to use the "transparent" Niles system, especially if you add new components from time to time.