Check out this innovative solution from Kaelus; Switchable RF filter technology.
The unique feature of this interference mitigation filter technology is the passband tunability.
For operators utilizing A1/A2/A3 blocks, the Kaelus KA-6008 allows installation to support Phase 1, 3700 – 3760MHz. Subsequently, simply using a standard AISG command, remotely reconfigure the KA-6008 filter to pass the entire C Band to support Phase 2, 3700 – 3980MHz.
The ability to remotely retune the filter will eliminate the need and costs, associated to access the filter for removal or retuning, i.e., no tower access or climb is required.