Heathkit vtvm v-7a manual

The Heath V-7A. VTVM and family. Introduction: A very popular older piece of Heathkit test equipment is the V-7A vacuum tube voltmeter. (VTVM). The V-7A isThis probe will permit VTVM usage for RF measurements up to 30 volts substantially flat from 1000 cycles to 100 mc. Built- in isolating capacitor permits DC