LTE 1.8 GHz BPF (band pass filter) - Lab Quality - Includes Performance Chart

Description

Single axial cavity, 7-Pole, LTE cellular-band, 50 watt, kapton sheathed axial air-coaxial internal radiator element (prevents operator shocks), adjustable RF bandpass filter.
Low insertion loss:  IL < O.2 dB inband.
Very flat frequency response:    < 0.2 dB across 30 MHz LTE channel plan.
A Laboratory grade unit in excellent, tested and professinally validated condition.
See photo of this filters frequency response. If you want a specific filter response graph, I will provide it within reason,
This is a conveniently compact and powerful tool for SDR developers doing DSP validation work. This filter is simple to detune, set -3dB roll-off and deep attenuate stop bands on either side of pass band, among other uses. Note that the tuning slugs have a slight offset from the lock nut to the cavity body. This is correct. It is not necessary to over-tighten the lock nuts and crush the spring washers underneath. If you want me to fixate the depicted filter response, please indicate so and I will do it correctly and professionally so you will be able to change it in the future without dealing with some of the poor practices seen in this eBay sector over the years.
For money grubbers, the silver content (~12oz) is worth more than the ask price. I paid 0 new for it.
This device has minor surface scratches, is about 1 year old, and I take returns within 5 business days of delivery if the device is broken.