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Transmitter Channel Allocations

The frequencies given are for (most) digital MUXES, for analogue channels deduct 3MHz.


Uses of Transmitter Channel Allocation Guides*


All the transmitter pages on this site (e.g. Crystal Palace) have their own Channel Allocation Guides, but because the coverage areas of most main transmitters are so large they do not represent the receivable frequencies in a particular geographical area in the same way that this one does.

The table below lists the broadcast channels for all the receivable TV transmitters around Sheffield. Note the gaps in the spectrum on channels  31 to 37 and 61 to 68. These are reserved for “other uses”, i.e. selling off the frequencies..... Apart from the guides obvious interest to those in this area it serves as a graphical reminder just how crowded the RF (Radio Frequency) spectrum is, note how the planners have “dovetailed” the various broadcast frequencies together in an attempt to minimise co-channel interference. Clicking on the latter link will also give some advice on how to combat the problem.

The various Channel Allocation Guides can be invaluable if you are trying to find a spare channel for a modulated output (e.g. for a Sky box or CCTV system) to be added to your TV setup/distribution system without suffering from co-channel.


Also see map of approximate coverage areas for all the UK TV frequencies.

This reference is interesting but (as with all coverage maps) it can be misleading, see “Line Of Sight”. These particular maps also seem to lack many of the outputs from the smaller repeaters and the restricted radiation patterns of some of the transmitters do not appear.

So all of this should be borne in mind when using them !


The five transmitters on the right hand side of the table below are all small repeaters with relatively small outputs and coverage patterns, thus the potential for co-channel between them is (theoretically....) small. One must remember that Sheffield is a hilly city (the resultant rivers, in the low lying areas, helping to explain why the steel making industry developed here) and so there are relatively few locations where more than one or two of the small repeater transmitters would be co-receivable.

Above is the Channel Allocation Guide for the Sheffield area. Note the gaps in the table below for channels 31 to 37, and 61 to 68, they`re reserved for “other uses”....


The frequencies given are for (most) digital MUXES, for an analogue channel deduct 3MHz.

Blank Transmitter Channel Allocation Guide


Below is a blank TCA for printing out to assist with finding a suitable channel to add a signal from an RF modulator. Also read the article on Selecting an RF modulated channel.


Right click on table then click "Print Picture" .


The frequencies given are for (most) digital MUXES, for an analogue channel deduct 3MHz.

The subjects are listed on this page in the following order :

Uses of Transmitter Channel Allocation Guides


Sample TCA (for Sheffield)


Sheffield Historic pre DSO TCA (Analogue plus digital)



Blank TCA  (also see Selecting an RF modulated channel)

We are more than willing to give advice to those actually purchasing from us. Could those only seeking information please just find the answer somewhere on this site, or ring an aerial installer local to them, or call the reception advice phone numbers.

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If you`ve found this site informative and, hopefully, interesting as well,

please help us increase the number of people reading it.


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Blank channel allocation guide

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Below, for historical interest, is the last Channel Allocation Guide for the Sheffield area whilst analogue and - low power - digital were both being transmitted, i.e. the situation on the 2nd Aug 2011 the day before Belmont commenced its switchover.


It`s a bit crowded is it not…….

Historic pre DSO (analogue + digital) channel allocation guide for transmitters receivable in the Sheffield area Channel allocation guide for transmitters recievable in the Sheffield area.