Its inherent intermodulation generation is kept extremely low, using Wisycom transmitters, thanks to the very high-quality “-3 dB power-coupler module” and other devices employed, accurately selected between the top-class brands on the market. Furthermore, a very low-loss and sharp low-pass filter on the output prevents any harmonics. Also, the cross-talk between the inputs is very low, since they are decoupled by circulators.

The RTC 25 allows operating also with output mismatching: in case of bad antenna or cable-impedance characteristics, the reflected-power coming back from the antenna is redirected to its internal dummy-load, capable to absorb a continuous power of up to 100 W.

The Transmitter-Combiner output-power can be monitored on the front-panel RF-meter featuring two scales, for the precise reading of one-signal and two-signal working. Pushing the red button (PUSH TO REFL), you can read on the meter the antenna reflected-power. The RTC 25 also features an accurate SWR-overflow surveillance circuit: the red LED light-on when the antenna SWR goes in excess of 1 : 2.

In the back-panel is located the feeding connector; the internal relevant fuse is a self-resetting type.