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 |