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	The Type 544 is a 50MHz scope with tunnel diode triggering. It has only one timebase. A factory modification, MOD 108G, was available that increased the accelerating voltage to 24kv.		The Type 544 is a 50MHz scope with tunnel diode triggering. It has only one timebase. A factory modification, MOD 108G, was available that increased the accelerating voltage to 24kv. The 1968 catalog lists an RM544 Mod 720 which has a direct-access plug-in and has 1ns risetime.