MAAS Elektronik RX-200, RX-400, RX-600 User guide

INSTRUCTION

The RX-200/400 and RX-600 Power&SWR meter is the most efficient tool in wide range of semi-professional

measuring and control instruments. The measured values can be easily read in the large scale instruments.

The RX-200/400 and RX-600 is an insertion type RF wattmeter and can be permanently fitted into a transmission

system for continuous monitoring of station working condition.

The unit can be work without external power supply. But with 13.8VDC power which permits to light up the meter and shows

the active led corresponding to the selected RF coaxial line (for RX-600 only).

DESCRIPTION OF CONTROL

1 Power/SWR reading meter 10 led sensor 1

2 Indicator adjustment 11

3 Power range switch 12 sensor1/sensor2 switch

4 Function switch (lamp on/off, peak/average power)

5, 8 Antenna connector(connect to the antenna with 50 ohm coaxial cable)

6, 9 TX connector (connect to the radio with 50 ohm coaxial cable)

7 Power jack (13.8VDC) light up the meter and sensor 1 / sensor 2 led

led sensor 2

FIG1: RX-200/400 FIG2: RX-200/400

1 5 6

8

1

2 3 4 7

FIG3: RX-600 FIG4: RX-600

1 10 11

8 12 5

2 3 4 9 7 6

INSTALLATION

To install the RX-200/400 and RX-600 simply connect coaxial cable directed to the antenna connector marked “ANT”,

and the cable coming from the transmitter or from the linear amplifier to the connector marked “TX”.

RX-200/400 and RX-600 are now ready to operate.

POWER MEASUREMENTS

1 Select the RANGE (3) switch on the end-scale position value as to the power of the unit.

2 Select the FUNCTION (4) switch in the power position.

3 Select the POWER switch the FWD position to measure the direct power (from the radio to antenna)

or REF position to measure the reflected power (from antenna to the radio).

4 Select the power value can be read on the corresponding scale.

FIG5: RX-200/400 FIG6: RX-600

TO ANT TO RADIO TO ANT TO RADIO TO RADIO TO ANT

(1.8-180MHZ) OR (140-525MHZ) (140-525MHZ) (1.8-180MHZ)

REMARK: SWR VS. REFLECT POWER

Pfwd + Prev

SWR (Standing Wave Ratio) =

Pfwd - Prev

SWR 1.0 1.1 1.2 1.5 2 2.5 3

Prev% 0 0.22 0.8 4 11.1 8.4 25

SPECIFICATION

Frequence range: 1.8~180 MHZ (RX-200, RX-600) , 140~525 MHZ (RX-400, RX-600)

Power measure range: 0.5~3KW (30W/300W/3KW) for RX-200 and RX-600 HF BAND

0.5W~600W (30W/300W/600W) for RX-400 and RX-600 UHF BAND 300W

Continuous power rating: CW/SSB for 1.2~200MHz 300W

Continuous power rating: CW/SSB for 140~525MHz 300W

ximum power handling: 3KW for 15 seconds / 2KW for 30 seconds / 1KW for 60 seconds

Ma

Minimum power input: 0.5W for RX-200, RX-400 and RX-600

Precision: 30W range ±5% , 300W range ±5% , 600W ±7.5%, 3KW range ±7.5%

SWR: 1~Infinity

Impedance: 50ohms

Input loss: 0.2db (1.8~180MHZ), (140~525MHZ)

Dimensions: 15x6.5x10CM

Weight: 720gr. (RX-600), 630gr. (RX-200/400)