that the average rates exceed national monetary inflation, no change in the rates established by section 111(d) (1)(B) shall be permitted:  And provided further, That no increase in the royalty fee shall be permitted based on any reduction in the average number of distant signal equivalents per subscriber.  The copyright arbitration royalty panels may consider all factors relating to the maintenance of such level of payments including, as an extenuating factor, whether the industry has been restrained by subscriber rate regulating authorities from increasing the rates for the basic service of providing secondary transmissions.

(B) In the event that the rules and regulations of the Federal Communications Commission are amended at any time after April 15, 1976, to permit the carriage by cable systems of additional television broadcast signals beyond the local service area of the primary transmitters of such signals, the royalty rates established by section 111(d)(1)(B) may be adjusted to insure that the rates for the additional distant signal equivalents resulting from such carriage are reasonable in the light of the changes effected by the amendment to such rules and regulations.  In determining the reasonableness of rates proposed following an amendment of Federal Communications Commission rules and regulations, the copyright arbitration royalty panels shall consider, among other factors, the economic impact on copyright owners and users:  Provided, That no adjustment in royalty rates shall be made under this subclause with respect to any distant signal equivalent or fraction thereof represented by (i) carriage of any signal permitted under the rules and regulations of the Federal Communications Commission in effect on April 15, 1976, or the carriage of a signal of the same type (that is, independent, network, or noncommercial educational) substituted for such permitted signal, or (ii) a television broadcast signal first carried after April 15, 1976, pursuant to an individual waiver of the rules and regulations of the Federal Communications Commission, as such rules and regulations were in effect on April 15,1976.

(C) In the event of any change in the rules and regulations of the Federal Communications Commission with respect to syndicated and sports program exclusivity after April 15, 1976, the rates established by section 111(d)(1)(B) may be adjusted to assure that such rates are reasonable in light of the changes to such rules and regulations, but any such adjustment shall apply only to the affected television broadcast signals carried on those systems affected by the change.

(D) The gross receipts limitations established by section 111(d)(1)(C) and (D) shall be adjusted to reflect national monetary inflation or deflation or changes in the average rates charged cable system subscribers for the basic service of providing secondary transmissions to maintain the real constant dollar value of the exemption provided by such section; and the royalty rate specified therein shall not be subject to adjustment.