Instruction sheet 587 551
1
Components
1
1a
1b
1c
Amplitude
control
POWER SUPPLY
7a
6a
5b
7
6
5a
8
1 UHF generator
Power input (1a)
Operation indicator (1b)
Amplitude control input (1c)
Antenna output (1e)
Internal thread M6 (1f)
2 Loop dipole
4-mm plug (2a
3 Antenna rod
4 Receiver dipole with lamp
Screw thread M4 (4a)
Lamp 3.8 V (4b)
5 Receiver dipole with diode
Screw thread M4 (5a),
4-mm sockets (5b)
6 Mounting rod for UHF generator
M10 thread (6a)
7 Mounting rod for receiver dipoles
Internal thread M4 (7a)
8 Table-top power supply
2
Scope of supply
1 UHF generator
1 Loop dipole
1 Antenna rod
1 Receiver dipole with diode
1 Receiver dipole with lamp
1 Mounting rod for UHF generator
1 Mounting rod for receiver dipole
1 Table-top power supply
1e
OUT
200
2a
587 551
1f
4b
5
4
4a
3
Description
The UHF generator is used to investigate the propagation of
electromagnetic waves in free space (e.g. in the air), in dielec-
tric media (e.g. in water) and on Lecher lines. It can be used in
continuous wave mode, an amplitude control input can be used
to reduce the power emitted.
2
The pluggable loop dipole functions as a transmitter antenna;
the enclosed antenna rod acts as a director when placed in
front of the receiver antenna, and as a reflector when placed
behind it.
Two receiver antennas can be used. The receiver dipole with
lamp indicates the field strength of the received signal as a
function of the antenna distance and polarization in a qualita-
tive manner through the change in lamp brightness. The re-
ceiver antenna with diode demodulates the high-frequency
received signal and can be connected to a multimeter for quan-
titative display of the field strength or to an audio-frequency
amplifier to generate an audio or video signal.
3
4
Technical data
4.1 UHF generator:
Operating data:
Frequency:
Wavelength:
Operating voltages:
Power consumption:
Operating modes:
CW:
Amplitude control is possible
Output power (into Z = 200
CW:
with reduction to 0.3 W
Standing-wave resistance:
for Lecher line experiments
Connections:
Power input
Control input
Antenna output
General data:
Housing:
Weight:
433.92 MHz (± 100 ppm)
ISM band (industrial, scientific,
medical) of UHF range
69.14 cm
from table-top power supply
15 W
continuous wave
Ω
):
3.0 W
max. 20 : 1
Mini-Mab 5
BNC socket
4-mm safety sockets,
high-frequency power output
with symmetrical supply, for
loop dipole, Lecher line or
200 Ω terminator
20.5 cm × 8.5 cm × 50 cm
full metal enclosure with inte-
grated heat sink
400 g
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