The allround amplifier is up to 20GHz. Works with any brand of Spectrum Analyzers. A "must have" for EMC measurements Amplification of very weak signals Boosts any antenna gain Compensation of negative antenna gain Works with any brand of Spectrum Analyzers and directly fits any SPECTRAN e.g. the SPECTRAN V5. Broadband sensitivity increases by up to 15dB. Newly designed microwave chips enable the UBBV DC20 to gain up to 20GHz. The UBBV DC20 is the ideal general-purpose RF amp that you'll wonder how you got along without. Enables maximum performance, particularly when measuring extremely weak signals. A "must have" to get the maximum performance out of any SPECTRAN V5 unit. Made in Germany: All UBBV DC20 Preamplifiers are developed, individually produced, and calibrated in Germany at the Aaronia factory. Included in delivery: All UBBV DC20 Preamplifiers will be shipped with many accessories in a high-value aluminum carrying case. More details can be found in the above section "Included in delivery".