arduino rc switch demo simple example or advanced example

Cannot get the results to show up in the serial monitor. Another person has had the same problem. Several answers to his problem but I think the best is this.

" rc switch library relies on transmitting device using a sc2262 or equivalent data encoding chip."
I am trying to decode a transmission from a remote control of a mains power switch. So I guess that I may need to take the transmitter apart to have a look.
I added another line to the code to print '5' but even that did not show up on the serial monitor. I am using com3 which works ok for all the arduino sketches I have created on the nano board. Could the example be using a different com port?
I am using the rxn3-b receiver module. It shows the numbers 434 and 315. I suppose this means for receiving transmissions of 434mhz and 315mhz. The transmitter is a 433mhz type.

Anybody know how to make this example work? Never had any problem with any of the other arduino examples. Anybody know of a gadget which displays remote control transmission codes? An oscilloscope I suppose. But what about something simpler?

Please post the code that you are having problems with