“N” wireless specification up to 750 mbps. If you Google Netgear N750 the WNDR4300 comes up – using this as the model number, it does support wireless bridging and operates as a repeater. The WNDR4300 also supports DD-WRT.
However, what you’re trying to do is best done with a dedicated “bridge” between the Jetpack and the router. You “bridge” Wi-Fi to Ethernet (or vice versa). That’s all a bridge does!