Exhibit 24.2 POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Jerome B. Eisenberg, Christian G. Le Brun and Alejandro R. San Miguel, true and lawful attorneys-in-fact and agents, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, to sign (1) the Registration Statement on Form S-1 to be filed by ORBCOMM Inc. (the "Company") with the Securities and Exchange Commission (the "Commission") and (2) any subsequent registration statement filed by the Company pursuant to Rule 462 under the Securities Act of 1933, as amended, for the offering which the Registration Statement on Form S-1 relates, and (3) any or all amendments (including post-effective amendments) and supplements to the foregoing registration statements, and to file the same, with all exhibits thereto and other documents in connection therewith, with the Commission, granting unto said attorneys-in-fact and agents and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done in connection therewith, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them, or their or his or her substitute or substitutes, may lawfully do or cause to be done by virtue hereof. SIGNATURE TITLE DATE --------- ----- ---- /s/ Jerome B. Eisenberg Chief Executive Officer, President, October 10, 2006 - ------------------------------------- Director, Chairman of the Board Jerome B. Eisenberg (principal executive officer) /s/ Robert Bednarek Director October 10, 2006 - ------------------------------------- Robert Bednarek /s/ John Franco - ------------------------------------- Director October 10, 2006 John Franco /s/ Marco Fuchs - ------------------------------------- Director October 10, 2006 Marco Fuchs - ------------------------------------- Director October , 2006 Ronald Gerwig - ------------------------------------- Director October , 2006 Robert Gold - ------------------------------------- Director October , 2006 Leslie Golden /s/ Timothy Kelleher - ------------------------------------- Director October 10, 2006 Timothy Kelleher /s/ Matthew Lesesky - ------------------------------------- Director October 10, 2006 Matthew Lesesky /s/ Peter Schiff - ------------------------------------- Director October 10, 2006 Peter Schiff /s/ Robert G. Costantini Executive Vice President and Chief October 10, 2006 - ------------------------------------- Financial Officer (principal Robert G. Costantini financial and accounting officer) 2