SURECOM SW-102 HF 1.5-70MHz Power & S.W.R. Meter
V.S.W.R. meter Introduction
V.S.W.R. Forward and reflected power direct digital readout, without any calibration.
Maximum measurable power range up to 120W.
low insertion loss (0.3 decibels or less) structure allows it to be permanently connected.
All Function display ( SWR, FW power, RW power ,Battery Level)
Feature & Specification
Frequency range: 1.5-70MHz
Measurable power range: 0.5- 120W
Maximum power: 120W
Impedance: 50Ω
Size: W 76 X H 77 X D 35 mm
Weight: < 220 grams
Battery : 3.7V Li-ion Rechargeable Battery
Interface: SO239 Interface
| Power measurement range |
120 W (intermittent use) |
| Measurement range at swr measurement |
1.00:1 ~ 19.9:1 |
| Frequency range |
COVER : 1.5~70MHz |
| Insertion loss |
Less than 0.3dB |
| Impedance |
50ohms |
| Temperature |
0℃~60℃ |
| Battery display |
Yes |
| Battery Build-in |
3.7V Li-ion Battery |
| Auto power off |
1-9 mins |
| Size |
66*68*37 (mm) |
| Charger in |
5V (micro usb) |
| Backlight |
AUTO OFF |
| Interface (in and out ) |
SO239 UHF female |
| Weight |
220g (include battery) |
Power ON/OFF:
Press 2 second the [Red button] to power on or power off
MENU Display
| Mode No. |
Item |
Adj |
|
Content |
| 1 |
Light off |
1 to 9 |
1 |
"0" is always on, 1 min to 9 mins |
| 2 |
Power Off |
0 to 9 |
3 |
"0" is always on, 1 min to 9 mins |
| 3 |
Adjust Power |
0 |
0 |
+-99 |
* Supplier, the product will add functionality without having to give notice |
Set & Save:
Press MENU [Blue button]
Press F1 [Red button) (Select 1-3 Function)
Press [Blue button] ( - ), [Yellow button] (+)
Press the [Red button ]for 2 seconds
Press the [Blue button] to SAVE and EXIT
How to rotate display :
Press and hold Yellow key to rotate display in 180 degree , Press and hold Yellow key to normal .
Measure SWR :
Connect to "TX" on Radio output and Antenna to "ANT". Proper adaptor/cable is required if your device has different type of connectors.
Measurement V.S.W.R. :
SW-102 "TX" connect Radio RF out
Radio on transmission , S.W.R. measure data on display
| SWR |
1.0 |
1.1 |
1.2 |
1.5 |
2.0 |
2.5 |
3.0 |
| Refiected RF power(%) |
0 |
0.22 |
0.8 |
4.0 |
11.1 |
18.4 |
25 |
If swr is too high
If swr of the antenna is too high, see if antenna is correctly frequency , assembled and soldered, or coaxial cable and connector are correctly assembled and soldered.
Installation location of the antenna, surrounding buildings and so on, can also be a cause of high swr value.
SWR Formulas and Calculations
VSWR can be calculated from various parameters. By definition, VSWR is given as ratio of maximum voltage on the line to the minimum voltage.
The same can be expressed in terms of forward and reflected wave voltages.
Measure forward RF power
Measure how much RF output power is being applied from a radio equipment an antenna. In case of forward RF power, the more indicator indi- cates RF power,
the more RF power is applied to the antenna, provided that reflected RF power is minimum.
How to check the output power Watt of your transceiver :
Connect to "TX" on Radio output and 50ohms dummy Load to "ANT". Proper adaptor/cable is required if your device has different type of connectors.
Measurement Power:
SW-102 "TX" connect Radio RF out
SW-102 "ANT" connect 50 ohm Dummy Load
Radio on transmission , Watts power measure data on display .
Package Contents
1x SURECOM SW-102HF 1.5-70MHz Power & SWR Meter
1x Power PSU 100-240V
1x Charger Cable
1x English Users Manual
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