WSAQ709

Hello folks, I recently discovered that i had my Duplexer backwards... I had the receiver in low and the transmit on high. How do you know if it's damaged? This is the duplexer.. https://www.buytwowayradios.com/xlt-dp-gmrs-50.html?fee=5&fep=5322&utm_source=google_shopping&utm_medium=feed&utm_campaign=product_ppc&matchtype=&keyword=&device=c&adposition=&network=g&gad_source=1&gclid=Cj0KCQjwqpSwBhClARIsADlZ_Tm3ht6u9wrpcsToPa1QJOD0QObAvnf9wSRa0YdlC52i4tnVNFwutGsaAlsxEALw_wcB