7
4994BS–AUDR–05/08
ATR4262M1 [Preliminary]
7. VCO and AM Prescaler Settings

Table 7-1 gives an example of the VCO divider and AM Prescaler settings and the reception

frequencies.

A small VCO frequency range of e.g., 195.3 MHz to 237.9 MHz allows reception of the most

important bands like FM, JPN, LW, MW, 49m, 41m, and 31m.

8. Power Supply

There is only one power supply voltage (8Vto 10V) necessary for operation of the ATR4262M1.

Table 7-1. Typical VCO Divider, AM Prescaler Settings, and Reception Frequencies

Band
VCO-
divider
(DFM)
N-div.
Prescaler
(DPLL) IF [MHz] Min. Reception
Frequency [MHz] Max. Reception
Frequency [MHz] Min. VCO
Frequency Max. VCO
Frequency
AM-
Prescaler
(DAM)
FM 2 2 +10.7 87.5 108 196.4 237.4 -
JPN 3 3 –10.7 76 90 195.9 237.9 -
WB 1 2 +10.7 162.4 162.55 173.1 173.25 -
OIRT 3 3 +10.7 65.8 74 229.5 254.1 -
OIRT 3 3 –10.7 65.8 74 165.3 189.9 -
LW/MW - 2 +10.7 0.15 1.605 217 246.1 10
LW/MW - 2 +10.7 0.15 1.605 195.3 221.49 9
120m - 2 +10.7 2.3 2.5 208 211.2 8
...
49m - 2 +10.7 5.95 6.2 199.8 202.8 6
41m - 2 +10.7 7.1 7.35 213.6 216.6 6
31m - 2 +10.7 9.5 9.9 202 206 5
...
15m - 2 +10.7 21.45 21.85 192.9 195.3 3