First thing to do is check/confirm what version you’re using, and ideally move you on the latest version from @tinman - also I assume you’re using the Rfxtrx433 transceiver from rfxcom ?
Once you’re on the latest , we are likely better placed to help by comparing apples with apples (version wise) . I’m fact, once updated it might be best to channel your rfxcom questions there.
. I’m fact, once updated it might be best to channel your rfxcom questions there.