Tango Modem, LLC | 1,489 followers on LinkedIn. Tango Modem frees and organizes data, making it available in real time, without replacing existing technology platforms. | Tango Modem delivers agile, affordable and reliable web and mobile executions for small to medium sized agencies, and direct clients. GM O’Connell and Bob Allen, founders and former CEO and COO of Modem Media, have teamed up with the founders of Apernet, (Latin America’s leading interactive development firm), creating Tango Modem, a technology-focused agency here in the US. Our model is simple.