Solid State Type VSWR Meters
Model VS-411 is a calibrated high gain amplifier tuned at one frequency to be used for measurement of VSWR, impedance and relative power levels. The meter indicates the signal level in proportion to the input, which is calibrated directly in VSWR and db.
Input Selector Switch is provided for NORMAL and EXPAND range.
High gain tuned at one frequency.
1000 Hz ± 2%.
0.1 microvolt at 200 ohms for full scale.
Less than 0.02 microvolt.
70 db min. in 10 db steps.
± 0.15 db on one range.
1% of full scale.
'Coarse' & 'Fine'.
BNC (F), 200 ohms impedance
230 V, 50 Hz
i) Instruction Manual (1 No.)
ii) Mains Cord (1 No.)
iii) Coax, cable BNC to BNC (1 No.)
iv) Spare Fuse (2 Nos.)
Solid State VSWR Deluxe Meter
Model VS-41 1 DX is the deluxe model of VSWR Meter model: VS-41 1 with additional features of Input Selector 'Crystal1: Low & high, and Bolometer: low & high. It has a provision for output, which may be recorded.
Input power supply
220 VAC, ± 10%, 50 Hz
High gain tuned at 1000 Hz
1 000 Hz ± 2%
Band width (3db)
Xtal High (200KO) impedance Xtal Low (200O) impedance Bolo 200fl, 4.5 mA Bias Bob 200O, 8.7 mA Bias
< 1 jjV for full scale deflection at Xtal low/ Bolo Position.
Over 70 db (60 db in 10 db steps, 10 db through coarse adjustment, 2 db through fine adjustment)
± 0.2 db per 10 db step.
SWR 1-4, SWR 3-10 Expanded SWR 1-1.3 db 0-10 Expanded db 0-2
Normal / Expanded
Coarse adjustment 10 db minimum Fine adjustment 2 db minimum
Through BNC (F) connector
Recorder output level
IV for full scale deflection of meter
26(L) X 13 (H) X 20.4 (D) cms
i) Mains Cable (1 No.)
ii) Coax. Cable BNC-BNC (1 No.)
iii) Spare Fuses (2 Nos.)
iv) Instruction Manual (1 No.)