1. To expand the operating frequency range of the radio Alinco DJ-S41CQR, the following procedure shall be performed:
open the housing of the station and remove resistor K210.
While simultaneously pressing the "FUNC" and "V/M" buttons, switch on the power of the device.
.2. In order to increase the output power of the from 10 mW to 1000 mW (at a supply voltage of 12 V), it is necessary to short pads A and B as shown in the figure.
When the operating frequency range is expanded and the output power is increased, the transceiver Alinco DJ-41CQR has the following characteristics:
The processor frequency range is expanded to 400.000~499.995 MHz.
The VCO operates normally at the following frequencies:
Reception: 400-480 MHz
Receiver sensitivity:
400~420 - 0.40~0.20 µV
400~460 - 0.16 µV
460~480 - 0.20~0.40 µV
3. To switch the radio to channel mode, the channels shall be programmed according to the instructions, and then resistor R209 shall be removed.