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CAT NO: DIDACTICNLE-Export-081003
PC Based Motorized Antenna Trainer For Electrical Lab Training.
It can be used in stand-alone mode as well as be interfaced with a computer via RS-232 interface. In this Receiving Antenna can be rotated from 0 to 360 Degrees automatically with the help of Stepper motor controller unit and accordingly Receiving Antennas Signal strength can be monitored.The system consists of a set of two tripods one for mounting the transmitting antenna and another stepper motor controlled antenna positioning tripod for mounting the receiving antenna, 22Antennas, RF Transmitter, RF Receiver, Stepper Controller Unit, Antenna Plotting Software and relevant accessories/ cables. RF Transmitter: Frequency : 100 - 850 MHz Crystal Controlled Intervals : 50 MHz Accuracy : 0.01% Output Impedance : 75 Ohms RF Level : 90 dBuV Typical Output Level : Variable with Switchable Attenuator Modulation : 1 Khz Test Tone Power Supply : 230V 50 Hz RF Receiver: Frequency : 86 860 MHz PLL Controlled Step Size : 0.05, 0.1, 0.25, 0.5, 1, 10, 100 MHz Accuracy : 0.01% Display : 16X2 Backlit LCD Function s : Menu, Enter, Escape, Up & Down Memory Location : 1000 individual frequencies can be stored/recalled Input Impedance : 75 Ohms Measurement : RF level in dBuV with 0.1dB resolution Dynamic Range : 110 dB (70 dB Log + 40 dB Attenuator) Speaker : Inbuilt for Audio output Manual/ Auto Mode : Data logging for antenna gain & polar/cartesian plot with stepper motor RS232 interface : Easy connectivity to PC using polar pattern plotting software Power Supply : 230V 50 Hz Stepper Motor Controller Unit: Rotation : 0-360 Degrees with 1 Deg resolution Angular Steps : 1, 5, 10, 45 degrees Display : 16X2 Backlit LCD Function s : Menu, Enter, Escape, Up & Down Memory : 1000 memories for storing angular positions for quick recall Auto mode : Automatic Rotation with Interface to Receiver Mode : Clockwise/Anti Clockwise Rotation, Fast /Slow Speed Experiments: Variation of field strength with distance Plot radiation pattern of omni directional antenna Plot radiation pattern of directional antenna Polarization of vertical and horizontal antenna Study resonant and non resonant antenna and estimate VSWR and impedance Demonstrate reciprocity theorem of antennas Study current distribution along the element of antenna Study different antennas polar plots, radiation patterns, gain, beam width, front back ratio Comparison of different antennas Antennas Dipole L/2 Dipole L/4 Dipole 3L/2 Folded Dipole Yagi Uda (3E) Yagi Uda (4E) Ground Plane with Reflector & Director Slot Square Loop Rhombus Axial Mode Helix RHCP Endfire (Phase Array L/2) Phase Array L/4 Broadside Array L/2 Microstrip Patch Log Periodic Zepplin (Horizontal End Fed) Crossed Dipole LHCP Crossed Dipole RHCP Sleeve Axial Mode Helix LHCP Monopole
PC Based Motorized Antenna Trainer has been
designed to provide useful tools for hands on experimentation and
teaching of various commonly used antennas in VHF-UHF-Microwave band in
the laboratory for students of all levels.
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