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Chesterfield / Unstone transmitter at dusk.

Chesterfield TV transmitter “Up Close”.

Chesterfield`s channels in relation to the UHF TV band and the gain curves of the aerials we recommend for it.   DM Log    Log36    Yagi18K     XB10K     XB16K


Note from the graph that the three PSB MUXES can still be received on an original A group aerial.


Also see other relevant K group curves.

For Chesterfield we recommend the DM log for strong signal areas, the Log36 or medium signal areas and the Yagi18K or XB10K for poor signal areas, the latter aerial being particularly well suited to loft mounting. The XB16K is for those with the most marginal signals. The dimensions and test performance of the aerials can be found on the relevant tables.

It should be remembered that because of Wideband antennas poor response at the bottom of the band nobody should ever fit a “high gain” wideband on any K group transmitter, e.g. Chesterfield. If the site is in a poor spot a “high gain” K group aerial should be used. On the other hand if the signal is strong (or medium) then by definition it doesn`t need a “high gain” antenna anyway !  Under these circumstances a Log Periodic should be fitted instead.  

See Chesterfield transmitter`s graph

Chesterfield Transmitter           OS Grid Ref SK 383 764


Note, due to the new phenomenon of MUXICAL chairs you may experience problems with certain MUXES disappearing. First try rescanning your TV / set top box, do it manually if possible.

If this fails to sort it check on transmitter work or call the reception advice phone numbers.


Also see basic digital fault finding.


Switchover occurred at Chesterfield in Aug 2011.

Chesterfield (sometimes called Unstone) television transmitter was built in 1971. It is vertically polarised and is a repeater off Emley Moor. The transmitter was originally an A group but with the advent of Digital TV Chesterfield is now a K group (or wideband).      See Chesterfield`s graph.

The tower is situated mid way between Dronfield and Chesterfield and is a steel RSJ spaceframe design. It can be seen on the hill top from the Dronfield By-Pass or from the (ex Midland) Railway line which passes by in the valley. The former opened in 1975 and the latter in 1870, doesn`t time fly......

Ofcom quote Chesterfield`s maximum population coverage as being about 145 thousand, but that includes households which may well be on another transmitter with overlapping coverage.

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Chestrfield transmitter radiation pattern

Chesterfield transmitter is attenuated in a North Western direction.

Full output is to the SW with good signals in an arc

from SE to NW.  


Radiation pattern of Chesterfield (post DSO), graphic courtesy of Mike Dimmick

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Chesterfield`s Channel Guide also includes the frequencies for most of the other transmitters receivable within Chesterfields coverage area, including Emley Moor, Belmont, Waltham, Sutton Coldfield, Sheffield, Nottingham. This information can be most useful for identifying alternative transmitters and potential sources of cp-channel interference, on the subject of which, note that Bilsdale has all six MUXES on the same frequencies, Sutton Coldfield has three and Waltham has one. The Channel Allocation Guides can be very useful in the diagnosis of co-channel interference problems and can also 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.


DSO occurred in 2011 (between the 10 and the 24 of Aug).


Chesterfield`s transmission power is 400W on all MUXES apart from MUX 4 (the HD MUX), which is 800W. Pre switchover it was only 40W.


Although the transmitter is now a K group the three PSBs are still available off an original A group aerial (see Chesterfield`s graph).


Chesterfield has no interleaved spectrum channels allocated to it but there is a slight possibility of 2 or 3 more MUXES being transmitted between CHs 31 and 37. All of the latter can be picked up by a K group (or wideband) aerial aerial anyway.


External links


Chesterfield transmitter page on MB21

Chesterfield Transmitter page on Wikipedia


Digital UK Chesterfield transmitter

Digital UK details of Yorkshire transmitters

Ofcom Yorkshire transmitters details

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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