gainexpress RHAN-100ATC uses DEGREES FAHRENHEIT (°F) as unit of measurement and features BUILT-IN CALIBRATION KNOB, has MUCH LIGHTER WEIGHT and is SHORTER. This Refractometer is designed for testing the concentration of the battery fluids, antifreeze liquid and cleaning fluids (CF). With the indication of
This small preamp module was made for Ball Aerospace, and is amazing! It uses the RFMD pHEMT device type SPF-5122Z in a two stage design, with the second stage being a balanced type. The whole assembly runs off 5 VDC at about ~225 mA.
You get one Ku-band variable waveguide attenuator with WR-62 flanges frequency range 12.4 to 18 GHz with a continuous attenuation from 0 - 20 dB min. Unit has some scratches as you can see in picture but the general condition is ok.
This digital tube tester is part of my collection for some time, very handy unit if you mainly use ECC88/6DJ8/E88CC/6922/Cca tubes (CD/DAC's). This is a very nice and precise tube tester. See the last three photo's that shows the test results of a calibration tube from Jac Music that was rated 15.0/13.8mA vs.
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