Saelig Introduces JRE TVK Isolation Tester For Shielded Enclosures The JRE TVK Test Verification Set is a complete kit to easily and economically verify the isolation effectiveness of RF Shielded enclosures Saelig Company, Inc. has introduced the JRE TVK Isolation Tester, which can help to verify the proper shielding isolation of RF enclosure test set-ups. This test combination, consisting of the STA-1, a sensitive handheld spectrum analyzer, and the HPSS-1, a high power 2.45GHz test signal source, can easily and quickly measure enclosure isolation down to less than -100dB. The TVK Isolation Tester is simple to use since it is completely adjustment free, which eliminates erroneous readings or complex spectrum analyzer adjustment.