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There are several types of PbF solder available commercially. While this product is manufactured using Tin, Silver, and Copper
(Sn+Ag+Cu), you can also use Tin and Copper (Sn+Cu) or Tin, Zinc, and Bismuth (Sn+Zn+Bi). Please check the manufacturer’s
specific instructions for the melting points of their products and any precautions for using their product with other materials. 
The following lead free (PbF) solder wire sizes are recommended for service of this product: 0.3 mm, 0.6 mm and 1.0 mm.

The location of the “PbF” mark is subject to change without notice.

> EP-GW <

PbF

35-006057-005-200

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• Specifications are subject to change.

• Operation range: Up to 300 m outdoors, Up to 50 m indoors, depending on the condition.
• Analog telephone connection: Telephone Line

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3.3V

3.3V

DC
6V

Charge Contact

13.824MHz

KX-TG1077 BLOCK DIAGRAM (BASE UNIT)

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The base-station consists of base band controller, speech network, tel-line interface, RF module, linear regulator, EEPROM,
crystal and so on. Refer to Block Diagram (Base Unit) (P.7).

These are parts to control all function of the base-station, we used the Philips XS which is controller for DECT. These devices
include all control circuits of the base-station for RF module, tel-line interface, ADPCM codec, series regulator and so on. 

The power supply consists with CM1117 voltage regulator ICs. 
CM1117 generate DC 3.3V voltage from DC 6V voltage from adaptor. DC 3.3V are used for RF module & I/O port, DC 2.5V &
DC1.8V are used for the base band controller and the circumference circuits.

The TR circuit is used for speech network. The function of this connects tel-line interface and the base band controller.

The function of this connects tel-line and speech network. Also, the tel-line interface include the ring detect circuit, caller-ID cir-
cuit.

This is 8K bits memory. The each kind of value to set-up at power-on, redial memory, speed-dialing memory, and so on are
stored in this device.

Receiver part: RF signals induced at the antenna are extracted by the RF control interface. The RF signal to be selected is
demodulated into RX_DATA signals. And signals is passed to the base band controller.
Transmitter part: The signal from transceiver chip-set is fed to the antenna through the RF power amplifier by control of the RF
control interface. And then this signal is radiated from antenna.
Logical part: The frequency to be used is generated in transceiver chip-set by control signals (CLK, DATA, ENABLE, SYRI) of
the RF control interface.

The current limiter is circuit to supply the proper current to charge batteries of the handset from DC 6V voltage.