R&S®FK4190M HF Antenna Tuning Unit
For matching HF transceivers of the R&S® M3SR Series 4100 to antennas used in naval applications
The R&S®FK4190M matches rod, whip and wire antennas, as they are used in naval applications, to the RF output of the 500 W and 1000 W transceivers of R&S® M3SR Series 4100.
It can handle up to 500 W CW and PEP with rod/whip antennas of 7 m to 11 m length and up to 1000 W with 12 m rod antennas. The R&S®FK4190M operates in the frequency range from 1.5 MHz to 30 MHz, where it performs an antenna impedance transformation into 50 Ω in both the receive and transmit modes. Additionally it provides preselection in the receive mode.
The R&S®FK4190M has an extremely fast setting time for silent channels and allows frequency hopping operation in line with R&S®SECOM-H.
For protection against overvoltage as produced by lightning strokes to the antenna, the R&S®FK4190M output is provided with lightning protection
Main features
- Silent tuning over the entire frequency range from 1.5 MHz to 30 MHz
- Tuning of rod, whip and wire antennas
- Frequency hopping capability (SECOM-H)
- 500 W CW and PEP at 100% duty cycle
- 1000 W CW and PEP (12 m rod antennas only)
- Low probability of intercept (LPI)
- Maintenance-free, rugged design
- Continuous monitoring of operational status
