Connectors are the part of transmission path which do not have significant impact on the cost of an antenna installation, but are crucial to signal quality, labor intensity, and reliability of the system. Poorly chosen or low-quality connectors may cause a significant drop in signal level, and may also pick up interference. So it is important to use high-quality connectors. The important parameter is voltage standing wave ratio (VSWR), indicating how much of the power of the signal is reflected back to the source of signal. In the case of satellite IF the parameter should not exceed 1.5. Screening efficiency describes suppression capability of the connector as regards external interferences. For brand-name connectors its value is above 70 dB. It is especially important in multiswitch systems. In professional applications there are usually used crimped/compressed connectors, much quicker to mount and much more reliable.