Sony NTM-910 Baby Monitor Information

Overview

This is the front-panel "color code wheel" to frequency mapping for a Sony NTM-910 900 MHz baby monitor.  These fairly advanced 900 MHz baby monitors are starting to show up thrift stores for a low price.  They are ideal for use as a simple (wideband) FM receiver in the lower portion of the 902-927 MHz amateur/Part 15 band (execpt 903.6 MHz).  It should be possible to replace the receiver's 10.7 MHz IF filters with something a little narrower to help increase the receiver's poor -80 dBm sensitivity.  These baby monitors do include an annoying "out-of-range" alarm when they are not receiving a signal, this may require a component-level modification to disable.  The receiver includes a handy rechargeable battery pack (Sony BP-TR10).  The FCC ID is AK8NTM910.

Frequency (MHz) Channel Selector A Selector B Selector C
902.2 1 Yellow Yellow Yellow
902.3 2 Yellow Red Green
902.4 3 Yellow Green Red
902.5 4 Green Red Yellow
902.6 5 Green Green Green
902.7 6 Green Yellow Red
902.8 7 Red Red Red
902.9 8 Red Green Green
903.0 9 Red Yellow Yellow
903.1 10 Yellow Yellow Red
903.2 11 Yellow Green Green
903.3 12 Red Green Red
903.4 13 Red Red Green
903.5 14 Green Red Red
903.7 15 Green Yellow Green
903.8 16 Red Green Yellow
903.9 17 Yellow Red Green
904.0 18 Green Yellow Yellow
904.1 19 Yellow Green Yellow
904.2 20 Red Yellow Red
904.3 21 Red Red Yellow
904.4 22 Green Green Yellow
904.5 23 Green Red Green
904.6 24 Yellow Yellow Green
904.7 25 Green Green Red
904.8 26 Yellow Red Yellow
904.9 27 Red Yellow Green