Model 40600

      Model 40600 has five features,one is 0.965-1.565 GHz;the other is 4-way power split;the third is reliable performance;the four is Handles 100Watts;the five is meets MIL-E-5400 class 3 requirements.
      These Model 40600 transistors feature a series arrangement of two separate channels, each channel having an independent control gate. In amplifier applications the 40600 and 40602 with their wide dynamic range provide substantially better cross modulation performance than is obtainable with bipolar or single-gate field-effect transistors. In mixer applications the 40601 provides excellent isolation between the oscillator and RF signals because each of the two signal frequencies being mixed has its own control element. The wide dynamic range of the 40601 minimizes cross-modulation which is generally encountered in mixer stages.
      Provision of two insulated gates also results in extremely low feedback capacitances (0.02 pF typ.), a feature which enables the Model 40600and 40602 to provide high maximum usable power gains in unneutralized circuits - for example, 20 dB at 200 MHz typ. for the 40600, and 35 dB typ. at 44 MHz for the 40602. The gain of the RF and IF stages can be controlled by applying AGC voltage to gate No. 2 and AGC delay is easily obtained. Virtually no AGC power is required for full gain reduction.
      Types Model 40600, 40601, and 40602 are hermetically sealed in metal JEDEC TO-72 packages.All these devices of 4060x series, however, had been designed with unprotected gates.Transistors were delivered with a rivet across all 4 connection leads that had to bereplaced by a thin shorting wire prior to installation into the circuitry. When solderedto the circuit, the protection wire cold be removed.
      Later on, MOSFETS were protected by a flat clamp that could be left connected to the device until soldered to the circuitry
      The ART Model 406 Six Channel Headphone Amplifier addresses the basic requirements for professional headphone mixing. It is a great processor for professional, project and home studio applications. It has an output and level control for each set of headphones, and a stereo input for connecting the program source.