TEDDY II SPECIFICATIONS General Frequency coverage 26.965 ~ 27.405MHz Operating mode F3E (FM), A3E (AM) Antenna Impedance Working temperature –10 ~+55 Frequency Tolerance Better than 0.002% Input Voltage 13.2V Grounding Method Negative ground 13.2V : 2.0A Max. Transmitter Current Drain...
TEDDY II CIRCUIT DESCRIPTION Frequency configuration The receiver utilizes double conversion. The first IF is 10.695MHz and the second IF is 455kHz. The first local oscillator signal is supplied from the VCO module. The VCO module in the transmitter generates the necessary frequencies. Fig. 1 shows the frequencies.
Page 4
TEDDY II CIRCUIT DESCRIPTION 1ST MIXER IF AMP CB100 RF AMP RF AMP RF AMP Q104 CF100 Q103 10.695MHz Q113 Q114 Q105 455kHz CF500 ANT SW OSC 10.240MHz 1st Local OSC (VCO MODULE) JACK(EXT SP ELECTRICAL VCO MODULE FM AF...
TEDDY II CIRCUIT DESCRIPTION Power Amplifier Circuit The transmit output signal from the VCO module passes through the amplified (Q110) and amplified by Q121. The amplified signal goes to the final amplifier (Q120) through a low-pass filter. The lowpass filter removes unwanted high-frequency harmonic components, and the resulting signal is transmitted through the antenna terminal.
Page 17
TEDDY II Testing Mode Adjusting Note Testing voltage 13.2V/Equipment HP8921A Test mode: When radio is off , press and hold the PTT+ MODE + EMG key and turn on radio, LCD shows “tS” in 5s, Press EMG MODE then full display, enter into the testing mode.
TEDDY II BLOCK DIAGRAM FM-TBK Y101 Y100 (455KHz) 10.24MHz NB RF AMP NB RF AMP NB DET NB ATT MAIN UNIT Q106, Q107 Q115, Q1116 2nd LO TBK SW D115 Q109 Q314 Q108 Q117 (10.24MHz) JK300 JACK(EXT SP) POWER AMP IC...
Need help?
Do you have a question about the TEDDY II and is the answer not in the manual?
Questions and answers
PRESIDENT Teddy 2 TED нет подсветки дисплея
Нет подсветки дисплея
Рация встала в fm диапазон и не реагирует на переключение