Community Audio Distribution Service
From HFUnderground
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[http://udxf.nl/WPAS-List-February-2016.pdf] | [http://udxf.nl/WPAS-List-February-2016.pdf] | ||
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+ | ===CADS/WPAS Frequencies: UK 27/81 LW and UW Channels=== | ||
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+ | ===CADS/WPAS Frequencies: CEPT CB Band or "Mid band"=== | ||
Mid Band CB UK, Europe, Ireland (used unofficially in Ireland) | Mid Band CB UK, Europe, Ireland (used unofficially in Ireland) |
Revision as of 13:55, 27 December 2018
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.
Note that these frequencies are used outside Ireland and the United Kingdom for similar services, regular two-way CB communications, R/C purposes, data links and paging networks.
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:
CADS/WPAS Frequencies: UK 27/81 LW and UW Channels
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 |
CADS/WPAS Frequencies: CEPT CB Band or "Mid band"
Mid Band CB UK, Europe, Ireland (used unofficially in Ireland) Defined under UK and Irish law as "26.960 MHz to 27.410 MHz"
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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