Community Audio Distribution Service

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See also the 11 meter band, CB, Remote Control and HF pagers

CADS, also known as the Wireless Public Address System (WPAS) in the Republic of Ireland. Church Radio re-broadcast service, AM and FM modes allowed, using CB-type equipment and frequency bands.

Three "bands" in (legal) use, the regular CB band 26.965-27.405 MHz, the UK FM "27/81" band 27.60125-27.99125 MHz and the "UW band" 27.605-27.995 MHz. Church services have been heard outside these band limits, often in the 27.405 MHz to 27.600 MHz portion and below 26.965 MHz (CB channel 1). Some churches use modified "export radios" which, instead of observing the UK FM offset, transmit on the "zeros" instead (i.e., operating on 27.800 MHz instead of 27.80125 MHz). Since the difference between UK FM offset and the zero offset is only 1.25 kHz and FM is used, this usually makes very little to no difference to the (local) receivers the church transmission is meant for.

During band openings, music and what sound like religious services have been noted on other 26-28 MHz frequencies, including those in the "low band" 26.515 MHz to 26.955 MHz and/or the German CB band 26.565 MHz to 26.955 MHz. Religious services church broadcasts have been monitored on 26.785 MHz, 26.825 MHz and other frequencies in addition to the more heavily used frequencies discussed above.

Frequencies

CB Channel Frequency
CB Band Mid Band 26.965-27.405 MHz
UK Band UK FM 27.60125-27.99125 MHz
UW Band (Ireland) 27.605-27.995 MHz

CADS operates on the 80 UK CB channels (standard CB channels 1-40 and UK FM CB channels 1-40) so 26965-27405 and 27601.25-27991.25 FM mode only. Ireland's WPAS service operates on two sets of 40 interleaved channels for a total of 80 channels. Although not technically authorized in Ireland, Churches often use the standard 40 "mid band CB" or "CEPT CB" channels as well. Ireland allows use of AM and FM on all 80 channels as part of the WPAS system, while FM is the only mode allowed in the UK. Most CADS and WPAS transmissions are in FM, AM is the exception. When added to the 40 mid band CB channels 26.965 to 27.405 a total of 120 channels becomes available. In practice, several churches will share frequencies or use offset channels and/or channels in between the 26.965-27.405 MHz range and the 27.60125-27.99125 MHz / 27.605-27.995 MHz range.

Note that the UK FM CB channels and LW01-LW40 WPAS channels are often offset, for example, instead of 27.60125 MHz, a church using an "export radio" with frequency agility will transmit on 27.601 MHz or even 27.600 MHz. With the local audience of these transmissions, a difference of 1 kHz or so makes very little, if any, difference...as the intended listeners are rarely more than a couple miles away from the transmitter. A small minority of churches broadcast outside the 26.965 MHz to 27.405 MHz and 27.6 MHz to 27.995 MHz regions, including the area below CB channel 1 (generally the "low band" frequencies of 26.515 MHz to 26.955 MHz, including the German CB extra channel allocation 26.565 MHz to 26.955 MHz) and the "freeband" frequency space between 27.405 MHz and 27.600 MHz.

For prldx's excellent list of WPAS/CADS 27 MHz Church Radio stations/broadcasts and logs, see this link:

[1]

WPAS Channel Frequency MHz Frequency kHz
Channel LW01 27.60125 MHz 27.601 MHz 27601.25 kHz
Channel LW02 27.61125 MHz 27.611 MHz 27611.25 kHz
Channel LW03 27.62125 MHz 27.621 MHz 27621.25 kHz
Channel LW04 27.63125 MHz 27.631 MHz 27631.25 kHz
Channel LW05 27.64125 MHz 27.641 MHz 27641.25 kHz
Channel LW06 27.65125 MHz 27.651 MHz 27651.25 kHz
Channel LW07 27.66125 MHz 27.661 MHz 27661.25 kHz
Channel LW08 27.67125 MHz 27.671 MHz 27671.25 kHz
Channel LW09 27.68125 MHz 27.681 MHz 27681.25 kHz
Channel LW10 27.69125 MHz 27.691 MHz 27691.25 kHz
Channel LW11 27.70125 MHz 27.701 MHz 27701.25 kHz
Channel LW12 27.71125 MHz 27.711 MHz 27711.25 kHz
Channel LW13 27.72125 MHz 27.721 MHz 27721.25 kHz
Channel LW14 27.73125 MHz 27.731 MHz 27731.25 kHz
Channel LW15 27.74125 MHz 27.741 MHz 27741.25 kHz
Channel LW16 27.75125 MHz 27.751 MHz 27751.25 kHz
Channel LW17 27.76125 MHz 27.761 MHz 27761.25 kHz
Channel LW18 27.77125 MHz 27.771 MHz 27771.25 kHz
Channel LW19 27.78125 MHz 27.781 MHz 27781.25 kHz
Channel LW20 27.79125 MHz 27.791 MHz 27791.25 kHz
Channel LW21 27.80125 MHz 27.801 MHz 27801.25 kHz
Channel LW22 27.81125 MHz 27.811 MHz 27811.25 kHz
Channel LW23 27.82125 MHz 27.821 MHz 27821.25 kHz
Channel LW24 27.83125 MHz 27.831 MHz 27831.25 kHz
Channel LW25 27.84125 MHz 27.841 MHz 27841.25 kHz
Channel LW26 27.85125 MHz 27.851 MHz 27851.25 kHz
Channel LW27 27.86125 MHz 27.861 MHz 27861.25 kHz
Channel LW28 27.87125 MHz 27.871 MHz 27871.25 kHz
Channel LW29 27.88125 MHz 27.881 MHz 27881.25 kHz
Channel LW30 27.89125 MHz 27.891 MHz 27891.25 kHz
Channel LW31 27.90125 MHz 27.901 MHz 27901.25 kHz
Channel LW32 27.91125 MHz 27.911 MHz 27911.25 kHz
Channel LW33 27.92125 MHz 27.921 MHz 27921.25 kHz
Channel LW34 27.93125 MHz 27.931 MHz 27931.25 kHz
Channel LW35 27.94125 MHz 27.941 MHz 27941.25 kHz
Channel LW36 27.95125 MHz 27.951 MHz 27951.25 kHz
Channel LW37 27.96125 MHz 27.961 MHz 27961.25 kHz
Channel LW38 27.97125 MHz 27.971 MHz 27971.25 kHz
Channel LW39 27.98125 MHz 27.981 MHz 27981.25 kHz
Channel LW40 27.99125 MHz 27.991 MHz 27991.25 kHz
Channel UW01 27.605 MHz 27605 kHz
Channel UW02 27.615 MHz 27615 kHz
Channel UW03 27.625 MHz 27625 kHz
Channel UW04 27.635 MHz 27635 kHz
Channel UW05 27.645 MHz 27645 kHz
Channel UW06 27.655 MHz 27655 kHz
Channel UW07 27.665 MHz 27665 kHz
Channel UW08 27.675 MHz 27675 kHz
Channel UW09 27.685 MHz 27685 kHz
Channel UW10 27.695 MHz 27695 kHz
Channel UW11 27.705 MHz 27705 kHz
Channel UW12 27.715 MHz 27715 kHz
Channel UW13 27.725 MHz 27725 kHz
Channel UW14 27.735 MHz 27735 kHz
Channel UW15 27.745 MHz 27745 kHz
Channel UW16 27.755 MHz 27755 kHz
Channel UW17 27.765 MHz 27765 kHz
Channel UW18 27.775 MHz 27775 kHz
Channel UW19 27.785 MHz 27785 kHz
Channel UW20 27.795 MHz 27795 kHz
Channel UW21 27.805 MHz 27805 kHz
Channel UW22 27.815 MHz 27815 kHz
Channel UW23 27.825 MHz 27825 kHz
Channel UW24 27.835 MHz 27835 kHz
Channel UW25 27.845 MHz 27845 kHz
Channel UW26 27.855 MHz 27855 kHz
Channel UW27 27.865 MHz 27865 kHz
Channel UW28 27.875 MHz 27875 kHz
Channel UW29 27.885 MHz 27885 kHz
Channel UW30 27.895 MHz 27895 kHz
Channel UW31 27.905 MHz 27905 kHz
Channel UW32 27.915 MHz 27915 kHz
Channel UW33 27.925 MHz 27925 kHz
Channel UW34 27.935 MHz 27935 kHz
Channel UW35 27.945 MHz 27945 kHz
Channel UW36 27.955 MHz 27955 kHz
Channel UW37 27.965 MHz 27965 kHz
Channel UW38 27.975 MHz 27975 kHz
Channel UW39 27.985 MHz 27985 kHz
Channel UW40 27.995 MHz 27995 kHz

Mid Band CB UK, Europe, Ireland (used unofficially in Ireland)

CB Channel Frequency
Channel 01 26.965 MHz
Channel 02 26.975 MHz
Channel 03 26.985 MHz
Channel 04 27.005 MHz
Channel 05 27.015 MHz
Channel 06 27.025 MHz
Channel 07 27.035 MHz
Channel 08 27.055 MHz
Channel 09 27.065 MHz
Channel 10 27.075 MHz
Channel 11 27.085 MHz
Channel 12 27.105 MHz
Channel 13 27.115 MHz
Channel 14 27.125 MHz
Channel 15 27.135 MHz
Channel 16 27.155 MHz
Channel 17 27.165 MHz
Channel 18 27.185 MHz
Channel 19 27.185 MHz
Channel 20 27.205 MHz
Channel 21 27.215 MHz
Channel 22 27.225 MHz
Channel 23 27.255 MHz
Channel 24 27.235 MHz
Channel 25 27.245 MHz
Channel 26 27.265 MHz
Channel 27 27.275 MHz
Channel 28 27.285 MHz
Channel 29 27.295 MHz
Channel 30 27.305 MHz
Channel 31 27.315 MHz
Channel 32 27.325 MHz
Channel 33 27.335 MHz
Channel 34 27.345 MHz
Channel 35 27.355 MHz
Channel 36 27.365 MHz
Channel 37 27.375 MHz
Channel 38 27.385 MHz
Channel 39 27.395 MHz
Channel 40 27.405 MHz
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