User manual
EXPERT 2K-FA
Pag. 21 of 21 Issue 2 – May 2011
6. ANTENNA
Because this is a high-power amplifier, it is necessary to use correctly-rated antennas,
connectors and feed line cables.
Take special care with antennas using baluns, traps, because balun / trap warming can
occur during periods of high-power transmission and a high SWR can result.
This dangerous situation is often not perceived by the operator because normally a
measure of SWR is made when balun and antenna are not under stress.
A unique feature of this linear is that, it not only measures the SWR after the matching,
but also the SWR of the system antenna / cable, this allows to always evaluate your
antenna system despite the matching and the power applied.
Always use antennas with SWR less than 2:1 even if the tuner is able to overcome
some mismatches greater than 3:1.
With the tuner the PA is matched, but with a high VSWR, the cable is mismatched and
there can be consequent loss of power, heating and high voltages present.
Always operate with the best possible matching because, despite the amplifier’s
protection against high SWR, continuous use into a mismatched load (a bit lower than
the protection threshold) may lead to damage.
It is suggested that suitable static protection be given to antenna feeder cables.
The software allows you to select up to three antennas for the same band.