![]() ![]() A short length of coax connects to the circuit. The input to the unit is via an "N" female connector mounted on the bottom of the enclosure. This unit allows variable coupling between 2 series inductors to achieve a limited inductance change in an antenna matching or tuning circuit. A unique design of an old standby, a motorized variometer. ![]() Vacuum cap! Surplus Sales special introductory price. We are selling thisīrand new coupler for less than the OEM price of it's Jennings The hinged lid contains most of the controlĬircuitry. Rain tight enclosure has "N" connector input and a beehive insulator We can provide a gear motor we have modified to fit for $95Įxtra or you can solve the issue. Robbed for spare parts so we have priced them accordingly. Gear motors that operate the vacuum cap were 28 vdc 7 amps requiredīut motors will run on 8-12 vdc. We can provide full "Theory Of Operation" specifications SR-380 transceiver on the RS-422 bus but should be able toīe modified (we hope) to operate with a small home-made controlīox. Variable inductor (See details on this inductor under the Variableīe the judge! It is designed to operate with Scientific Radio's Variable capacitor and a motor driven 24 µH edge wound 20 amp ![]() It is factory rated at 150 watts but has theĬapability of being modified to handle 2kw plus.Ĭomponents are a motor driven Jennings CVCJ-1000 5kv vacuum Remaining are the motorĭriven (24 vdc) 2P6T Radio Switch Model 86 Ceramic Switch andġ50 pF air variable plus tapped fixed inductor. Gearhead (24 vdc), drives 150 pF air variable plus tapped fixedīeen removed from the above tuning unit. ΜH, silver roller inductor (not motor driven). Kv (or UCSL-1000-5), vacuum cap (not motor driven). Radio Switch Model 86 Ceramic Switch CVCH-1000 7-1000 pF, 5 A UCSXH-200-35S (15-200pFģ5kv) is tuned with a single knob on the right of control panel. Wired in parallel and tuned with the Millen counter. Two large VMMC-2000-15S (40-2000pF, 15kv) vacuum capacitors (pictured This version of the tuner is complete with all original components. Basic coupler does not include capacitors or flanges. Two fixed vacuum capacitors (not included with basic coupler). Large cabinet (36" x 40" xģ4-1/2"H) and proximity of components makes this capacitiveĬircuit very efficient. For long wires, a fixed doorknob is connected in series with The general design is an "L" network with series input vacuum cap and shunt inductor at the ![]() Into a 35' whip and 50' to 150' long wires or works as a lineįlattener into unbalanced (coaxial fed) antennas from 1.6 - 30 So, withĬouple the GSB-900 transceiver and GSL-1900A Linear Amplifier Inductor should handle 30 amps, the vacuum 75 amps. The years you know we don't exaggerate, but when the factoryĬalls this beauty 1kw continuous, I've got to scratch my head. For sale at a fraction of the original government cost. We bought it from a company that purchased it for inspection to determine form, fit and function. The only required signals are RF in, AC power, coupler enable, and a momentary 'tune' pushbutton.įull installation and maintenance manual included. Numerous control and status signals are available via the I/O connector. Built-in directional coupler provides input to the matching logic as well as external access to the actual forward and reflected power. Both the vacuum capacitor and the roller inductor have optical encoders for tracking precise positioning. The input connection is through an "N" female connector and the output is via a 5" ceramic feedthru on the top of the unit. Additionally, 100 pF of series capacitance may be added to the output. It provides series capacitance via a 12 - 500 pF, 15 kv vacuum variable capacitor and a 0.1 to 50 µH shunt rotary inductor. The MacKay MSR4030 is a 1 kw rated auto tuner for single wire antennas. Weatherproof aluminum cabinet measures 15" x 11" x 28"L plus ceramic feedthru. MacKay MSR4030 1.6 - 30.0 MHz auto tuner. ![]()
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