TR-33C pic

TR-33C transceiver
Tr33c.jpg (8781 octets)
Picture : DRAKE catalogue 

The TR-33C 2 meter FM transceiver is a versatile, compact, solid state unit for use in the 2 M amateur band . It has 12 channel capability requiring only one crystal per channel. Transmitter offset from the receive frequency is determined by a separate five position switch; simplex and two standard offsets are supplied. It Will operate from its interna1 rechargeable nickel-cadmium batteries or from an external DC source. A charger for charging the nickel-cadmium batteries from 120 VAC is built in. The TR-33C uses a quarter wave length telescoping whip antenna which may be easily replaced by a shortened rubber helix whip or, an external 50 ohm antenna may be used. The receiver section employs an all FET front end design and a crystal filter in the first IF to minimize intermodulation interference.

 

GENERAL
bulletFrequency Coverage: 146-148 MHz.
bulletPower Requirements : 13.0 volts DC +- 15% from external supply or built in nickel-cadmium batteries
bulletCurrent Drain:
Batteries : Squelched Receive: 30 mA -Transmit : 400 mA
External Supply: Squelched Receive: 75 mA - Transmit: 445 mA
bulletAntenna Impedance: 50 ohms.
bulletBuilt in Battery Charger Voltage Required : 105-130 volts AC.
bulletDimensions: 5.45" (138 mm) X 2.28" (58 mm) X 8.5" (216 mm). Weight: 4.4 pounds (2 kg)
bullet 
RECEIVER
bulletSensitivity: Less than .5 microvolt for 20 dB noise quieting.
bulletSelectivity: Adjacent channel (+- 30 kHz) rejection greater than 75 dB
bulletModulation Acceptance: At least +- 7 kHz deviation.
bulletIntermodulation Rejection: 65 dB referenced to sensitivity level.
bulletFirst IF: 10.7 MHz with monolithic crystal filter.
bulletSecond IF: 455 kHz with ceramic filter.
bulletAudio Output : 1 watt at less than 10% T.H.D.
bulletAudio Output Impedance: 8 ohms.
TRANSMITTER
bulletRF Output Power: 1.5 watts nominal with 13.0 volts DC supply.
bulletDeviation: Direct frequency modulation adjustable to at least + 7 kHz deviation. +-Al1
bulletHarmonics : All harmonics of transmitter output frequency down at least 50 dB.
bulletSpurious Outputs Outside of 2M band: At least 60 dB down.
bulletSpurious Outputs in ‘2M band: At least 70 dB down.
Accessories
bulletAccessory Crystals
bulletModel MMK-33 Mobile Mount
bullet1525 EM Push Button Microphone

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No copy of text or image without a written authorization : email: JM CHERRY
Last updated on: 24 Dec 2011