- Frequency Range: 9 kHz to 30 MHz (useable up to 60 MHz)
- Active Matching Network
- Fiber Optic Remote Monitor/Control option
- Battery Operated
- Individual Calibration Included
- Three-year Standard Warranty
AM-741R
Active Monopole Antenna
The AM-741R is an active monopole antenna operating from 9 kHz to 30 MHz (usable up to 60 MHz). It features a removable telescoping rod adjustable from approximately 23 to 105 cm, meeting standard rod height requirements. The antenna includes a high-impedance matching network with 50 Ω output and a low-noise preamplifier, improving measurement sensitivity and signal-to-noise ratio. The preamplifier is powered by an internal rechargeable 6 VDC NiMH battery or an external power adapter. Status indicators on the front panel show RF ON/OFF, power, low battery, amplifier saturation, and charging status. The matching network is mounted beneath a 60.5 cm square polished aluminum counterpoise.
Features
Key capabilities and advantages
Specification
Technical specifications and parameters
| Product Name | Active Monopole Antenna |
| Frequency Range | 9 kHz to 30 MHz (useable to 60 MHz) |
| Polarization | Vertical |
| Nominal Impedance | 50Ω (output port) |
| Battery Type | 6 VDC NimH (rechargeable) |
| Average Battery Life | 10-12 hours (new, fully charged battery) |
| Active Antenna Factors (typical) | -1.2 to -0.3 (average: -0.5) [dB(m-1)] (9 kHz to 30 MHz) |
| Antenna Factor Variation (maximum) | ±0.5 dB (9 kHz to 30 MHz) |
Chat Us