The Quarterwave Stubless (QWS) series modules are available in variable operating bandwidth frequencies, assorted connectors and genders in broadband narrowband units to accommodate various wireless applications. A reverse polarity unit is also available in many modules. The QSS 7F7M AK 00 narrowband 7-16 Female bulkhead to 7-16 male quarterwave stub protector has a frequency range of 411 MHz to 494 MHz. Return loss is – 32.2 dB typical to – 26.4 dB minimum. VSWR is 1.05:1 typical to 1.1:1 maximum. Insertion loss is 0.05 dB typical to 0.08 dB maximum. PIM is >– 150 dBc (3rd order) and >– 173 dB (5th order).