NISSEI DG-503 and DG-503Max Digital SWR, Watt Meter
INTRODUCTION
This SWR & Watt meter is highly accurate for measuring Forward Power, Reflected Power, and the VSWR of Analog and Digital transceivers
MAIN FEATURE
- Large LCD (3.5″) display for easy of reading.
- Forward / Reflected power / VSWR ratio in one push button
- Selectable to measure DMR (TDMA), AM, SSB (DG-503MAX)
- LCD backlight display
- Convenient control layout for easy operation
- Packing gift box and DC 12V wire.
SPECIFICATIONS
| MODEL | DG-503 | DG-503MAX |
| Frequency Range | 1.6-60 MHz/125-525 MHz | |
| Measurement (Analog mode) | CW, FM, FDMA | |
| Measurement (MAX mode) | Not available | DMR (TDMA), AM, SSB |
| Calibration point | 28 / 145 / 435 MHz | |
| Power Range | 0 – 200W | |
| Accuracy | (+/- 5%) | |
| Minimum Power for SWR | 1W | |
| Input/Output Connector | SO239 (N-female option) | |
| Weight (Net) | 750 g | |
| Insertion Loss | Less than 0.1 dB | |
| Testing Function | Fwd/Ref Power & VSWR ratio | |
| Input/Output Impedance | 50 Ohm | |
| Dimension (W/H/D) mm | 140 x 84 x 122 | |
| Accessories | Operation Manual, 12V DC Wire | |
<FRONT & REAR PANEL>
<FRONT PANEL>
- LCD Display : Indicates FWD/REF and VSWR
- HF & V/UHF band switch
- Power switch
- MAX : Measuring DMR (TDMA) / AM / SSB (DG-503MAX only : when rear switch in MAX mode)
NOTE: When measuring TDMA or other digital modes the display may blink due to the nature of the transmission this is not a fault of the design and is normal operation
<REAR PANEL>
5&8.TX : Coax connector to transmitter RF output 6&9. ANT : Coax connector to antenna system
7. Power source :12V DC wire [ Black is negative (-), black/white is positive (+) ]
10. MAX switch : Selectable DMR (TDMA), AM, SSB Push to right ‘white dot’ is MAX mode (DG-503MAX only)
