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• TC-265/365 SERVICE MANUAL Contents R e v i s i o n H i s t o r y 1 G e n e r a l. • TC-265/365 SERVICE MANUAL Revision History Date Revision 2004.6 010 2006.10 IC302 is changed from TA7368F to KIA6278F; Q203/Q203 is changed from 3SK320 to 3SK318; Q102 is changed from 2SK2596 to RD01; Q105 is changed from 2SK2595 to RD07. Changes also be made on the corresponding peripheral circuits. • Do not modify the radio for any reason. Use only HYT original batteries and chargers. Use only the supplied or an approved antenna. Do not use any portable radio that has a damaged antenna.

Katalog pochtovih marok michel 2013 2015. If a damaged antenna comes into contact with your skin, a minor burn can result. • TC-265/365 SERVICE MANUAL Radio Overview 1. Mode User mode: Turn on the radio to enter the mode. PC mode：Set and adjust radio data with PC software or programmer in this mode. Parts description: (1) Antenna (2) Channel Selector Knob Turn the selector knob to select channels 1-S (channel S can be programmed by dealer as scan function).

• TC-265/365 SERVICE MANUAL Indicates: Red LED glows Transmitting Red LED flashes Low battery Green LED glows Monitoring or receiving Orange LED glows Transmitting 2-Tone/5-Tone signaling Orange LED flashes 2-Tone/5-Tone standby (4) Radio On-Off/Volume Control Knob Rotate the knob clockwise to turn the radio on, rotate the knob fully counter-clockwise until a “click” is heard to turn the radio off. • TC-265/365 SERVICE MANUAL Radio Modes 1. Frame of Radio Modes Select the function from the modes and make settings according to your needs. User Mode Conventional Mode PC Mode Dealer Mode All Reset Mode Manual Adjust Mode Wired Clone Mode 2. • TC-265/365 SERVICE MANUAL 3. Keyboard Entry for Mode Startup Mode Remarks User Mode Conventional Turn the radio on to enter Power on Mode conventional mode. Connect the radio with PC You can program the radio via PC Mode through interface cable.

• TC-265/365 SERVICE MANUAL 5.2 Manual Adjust Mode In this mode, the factory or the dealer can adjust the radio parameters in menu mode. Operation: Turn the radio on while holding down the [PTT], three beeps sound after 2 seconds and green LED flashes. Press [PTT]/[MONI] so that red LED flashes. TC-265/365 radio has 16 channels.

Every four adjacent channels is a group. There are four groups and they are marked as group 0, group 1, group 2 and group 3 respectively. The channel frequency of each group is arranged as center, low, high and center frequency. • TC-265/365 SERVICE MANUAL Function Setting: Function Function Setting (Defaults are Display Remarks Name underlined) Monitor Disable Monitor Momentary AF channel opens when [MONI] is held down. Monitor Lock Squelch opens when [MONI] is held down. Switches each time [MONI] is held down. • TC-265/365 SERVICE MANUAL Priority + It’s priority channel during scan; It’s the Last Stopped channel where scan is stopped during scan.

Assignment + It’s the assignment channel during scan; It’s Last Stopped the channel where scan is stopped during scan. • TC-265/365 SERVICE MANUAL 5.4 PC Adjust Mode The following parameters can be adjusted through PC (only for factory adjustment): Adjustment data; Maintenance record. 5.5 Wired Clone Mode Turn the radio on while holding down the [MONI], after two seconds, a beep sounds and red LED flashes indicating that the radio enters wired clone mode. • TC-265/365 SERVICE MANUAL 6. Appendix: Initial data table Model Frequency Center IF (MHz) 1CH (C) 2CH (L) 3CH (H) 4CH (C) Range (MHz) Frequency (MHz) Rx (MHz) Tx (MHz) Rx (MHz) Tx (MHz) Rx (MHz) Tx (MHz) Rx (MHz) Tx (MHz) TC-265 (1) 136.000-150.000.

Receiver The receiver employs double conversion superheterodyne. 1-a) Front end RF amplifier (TC-265) The input signal of antenna is applied to an RF amplifier (Q203) after passing through a transmit/receive switch circuit and a 3-stage low pass filter. The amplified signal is filtered through a band pass filter (a 3-stage LC filter) to eliminate unwanted signal before it is applied to the first mixer. • 3) IF amplifier The first IF signal is amplified by Q201（TC-265） /Q124 （TC-365）, and then enters IF processing IC.