Microlab ST series trombone line stretchers are designed to adjust the electrical separation of other components without introducing additional mismatch. They consist of two single stretchers, see SR series, mounted in series, providing twice the phase range for a given physical size. All step discontinuities have been carefully compensated.
The Microlab/FXR line stretchers are constant impedance devices utilizing a unique inner design eliminating the step discontinuities associated with conventional line stretchers. They are rugged, well designed devices with a proven history. Also available from Microlab/FXR are Slug Tuners, SF series; Stub Tuners, see S1-S3 series; and Stub Stretchers, see SL series.
Options for different polarity or alternate connectors are available on request