Acknowledging that it has been approached by various interested carriers, the Public Safety Spectrum Trust (PSST) said this week that it would explore with FCC officials the possibility of adopting a regional licensing scheme for the 700 MHz D-block, which failed to meet minimum bid requirements at the 700 MHz auction held earlier this year. Under current FCC rules, the D-block has been designated for a hybrid public safety-commercial wireless broadband network that would operate nationally and that would be managed by the PSST. The FCC is currently in the midst of further rulemaking proceedings to consider possible changes to the D-block licensing scheme and other rule modifications that would ensure a successful outcome for the yet-to-be scheduled D-block reauction. Although the PSST continues to support a single nationwide license for the 700 MHz D-block, PSST Chairman Harlin McEwen met with FCC members on Tuesday to explore the possibility of a regional licensing approach that, according to McEwen, may encourage bids from multiple carriers that, in turn, would build regional network facilities that could be interconnected to form a de facto national network. McEwen added that regional D-block networks, if approved by the FCC, must be based on a single technological standard that would achieve “all the economies of scale” of a single nationwide network. Admitting, “it’s difficult to find people who have expressed an interest in bidding on a single license,” McEwen said, “there are a number of people who have been meeting with us and talking to us about a regional approach, so we’ve got a lot of interest.”