Originally posted by Lightninghorse:
Matt, if you are using a non-601 intercom, You may be just plain overloading the 601's power supply. That will cause hum and consider it a warning from the 601 power supply! John C. (Not Garand)
Thanks John - I really hope that's not it.... as you can see from this thread, there has been a great gnashing of teeth any many, many attempts to get my old intercom card working. If I have to resort to finding a working intercom card for this unit.... I will be:
The one Sam sent me is very cool.
