Vintage PACO V-70 VTVM – Totally reconditioned & calibrated, with multi-probe

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Seller: uncabilly (375) 100%, Location: Oxford, Pennsylvania, Ships to: US, Item: 184220883905 Vintage PACO V-70 VTVM – Totally reconditioned & calibrated, with multi-probe The Paco V-70 is a basic Vacuum Tube Voltmeter (VTVM) from the late 1950-60s. It has 7 ranges and an 11 megohm input for extremely light circuit loading. AC frequency response is rated from 40 cycles to 4 MHz. Its circuitry is very similar to many VTVM's of the same age, such as the Heathkit V-7A and the EICO 232, etc. But the styling is slightly different. I have replaced the electrolytic and several of the coupling and bypass caps. The switches and pots have been cleaned and lubed with silicone. The original leather strap was coming apart. It was replaced with a section of leather belt. The power cord and grommet are new. It has a new pilot lamp and the unit has been calibrated. Schematic diagram is included. The manual is available on the internet from several sources. The original probes were missing at the hamfest. I had an old Keystone probe body, so I made a multi-probe; one probe with switched ranges (see diagram). The slide switch selects RF – DC – AC/ohms. Far superior to swapping probes. The Paco V-70 is a basic tube voltmeter (VTVM), with a double triode used as cathode followers in a differential bridge configuration. The circuitry is much like the Heathkit and EICO meters. And of course, the PACO V-70 comes in a larger case with a slightly more elegant styling. The Paco V-70 uses two tubes: 12AU7 as the amplifier 6AL5 as rectifier for AC measurements. This vacuum tube voltmeter is neatly built. All components have enough space and it is easy enough to reach the calibration controls. Condition: Seller refurbished, Condition: I have replaced the electrolytic and several of the coupling and bypass caps. The switches and pots have been cleaned and lubed with silicone. The original leather strap was coming apart. It was replaced with a section of leather belt. The power cord and grommet are new. Tubes tested fine. It has a new pilot lamp and the unit has been calibrated. Schematic diagram is included., Modified Item: Yes, Country/Region of Manufacture: United States, Current Type: Universal, Voltage Range: 7 ranges 1.5 - 1500 Vdc FS and 4 - 4kV p-p FS, MPN: N/A, Modification Description: New caps, power cord, and probe, Display: Analog, Brand: PACO, Frequency Range: 40cps - 4MHz

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