Sec.  27.1233   Reimbursement costs of transitioning.

   (a) Replacement downconverters. The proponent(s) must install at every
   eligible EBS receive site a downconverter designed to minimize the reception
   of signals from outside the MBS.

   (1) An EBS receive site is eligible to be replaced if:

   (i) A reception system was installed at that site on or before the date the
   EBS licensee receives its Pre-Transition Data Request (see  Sec. 27.1231(d));

   (ii) The reception system was installed by or at the direction of the EBS
   licensee;

   (iii) The reception system receives EBS programming under  Sec. 27.1203(b) and
   (c) or is located at a cable television system headend and the cable system
   relays educational or instructional programming for an EBS licensee; and

   (iv) It is within the licensee's 35-mile radius GSA.

   (2) Replacement downconverters must meet the following minimum technical
   requirements:

   (i) The downconverter's input frequency range (the “in-band frequencies”)
   must be 2572 MHz to 2614 MHz and output frequency range must be 294 MHz to
   336 MHz;

   (ii) The downconversion process must not invert frequencies;

   (iii) The nominal gain of the downconverter must be 32 dB, or greater;

   (iv) The downconverter must include filtering prior to the first amplifier
   that attenuates frequencies below 2500 MHz and above 2705 MHz by at least 25
   dB;

   (v) The downconverter must have an out-of-band input 3rd order intercept
   point (input IP3) of at least +9 dBm, where out-of-band is defined as all
   frequencies below 2566 MHz and all frequencies above 2620 MHz;

   (vi) The downconverter must have a typical noise figure of no greater than
   3.5 dB and a worst case noise figure of no greater than 4.5 dB across all
   in-band frequencies and across its entire intended operating temperature
   range;

   (vii) The downconverter must not introduce a delta group delay of more than
   20 nanoseconds for digital operations or 100 nanoseconds for analog
   operations over any individual six megahertz MBS channel.

   (b) Migration of Video Programming and Data Transmission Track. (1) The
   proponent(s) must provide, at its cost, to each EBS licensee that intends to
   continue downstream high-power, high-site educational video programming or
   data transmission services, with one programming track on the MBS channels
   for each EBS video or data transmission track the licensee is transmitting
   on a simultaneous basis before the transition.

   (i) To be eligible for migration, a program track must contain EBS
   programming that complies with  Sec. 27.1203 (b) and (c).

   (ii) The proponent(s) must pay only the costs of migrating programming
   tracks being transmitted on December 31, 2002 or within six months prior
   thereto.

   (2) The proponent(s) must migrate each eligible programming track to
   spectrum in the MBS that will be licensed to the affected licensee at the
   conclusion of the transition.

   (3) After the transition, the desired-to-undesired signal level ratio at
   each of the receive sites securing a replacement downconverter must satisfy
   the following criteria:

   (i) Cochannel D/U Ratio. (A) When the post-transition desired signal is
   transmitted using analog modulation, the actual cochannel D/U ratio measured
   at the output of the reception antenna must be at least the lesser of 45 dB
   or the actual pre-transmission D/U ratio less 1.5 dB.

   (B) When the post-transition desired signal will be transmitted using
   digital modulation, the actual cochannel D/U ratio measured at the output of
   the reception antenna must be at least the lesser of 32 dB or the
   pre-transition D/U ratio less 1.5 dB.

   (C) Where in implementing the Transition Plan, the proponent(s) deploys
   precise frequency offset in an analog system, the minimum cochannel D/U
   ratio is reduced to 38 dB, provided that the transmitters have or are
   upgraded pursuant to the Transition Plan to have the appropriate “plus,”
   “zero,” or “minus” 10,010 Hertz precision frequency offset with a  �3 Hertz
   (or better) stability.

   (ii) Adjacent Channel D/U Ratio. The actual adjacent channel D/U must equal
   or exceed the lesser of 0 dB or the actual pre-transmission D/U ratio.
   However, in the event that the receive site uses receivers or is upgraded by
   the proponent(s) as part of the Transition Plan to use receivers that can
   tolerate negative adjacent channel D/U ratios, the actual adjacent channel
   D/U ratio at such receive site must equal or exceed –10 dB. Provided that
   the receive site receiver is not upgraded and cannot tolerate –10 dB, the
   adjacent channel D/U ratio would be 0dB.

   [ 69 FR 72034 , Dec. 10, 2004, as amended at  71 FR 35193 , June 19, 2006]