Market data is recorded from a real live exchange. The process can include providing a feed to a primary upgrading zone and then treating the product from the primary upgrading zone with a feed-immiscible ionic liquid to remove metal compounds. Each of the transmitted dynamic group call message includes the IP address of one of the selected radios. A retimer may generate a retimed signal corresponding to at least a portion of the received input signal to the second port without initializing or reconfiguring the second port. The compressible element is compressed sufficiently to restrict free rotation during a degradation operation.