R&S®FK4115M HF Antenna Tuning Unit
For matching HF transceivers of the R&S® M3SR Series 4100 to antennas used in naval and stationary applications
The R&S®FK4115M matches rod and whip and wire antennas – as used in naval and stationary applications – to the RF output of the 150 W transceiver of R&S® M3SR Series 4100.
It can handle up to 150 W PEP or 100 W CW at a 100% duty cycle. The R&S®FK4115M 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®FK4115M has an extremely fast setting time for silent channels and allows frequency hopping operation in line with SECOM-H.
Particular attention has been paid to achieving effective lightning protection. The ATU is fully arc-protected against direct lightning strokes. It is tested to withstand arcs of 10 kV/10 kA.
Main features
- Silent tuning over the entire frequency range from 1.5 MHz to 30 MHz
- Tuning of rod, whip and wire antennas
- 150 W PEP, 100 W CW at 100% duty cycle
- Low probability of intercept (LPI)
- Maintenance-free, rugged design
- Frequency hopping capability (SECOM-H)
