Hillsborough
Sheffield
S6 2LL
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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 Log40 Yagi18K XB10K XB16K
Note that the “original A group curve” is that for post 1995 aerials, when the A group was extended up to CH37 from CH34. Thus the response curve for aerials fitted prior to this
date would be about 3 channels down. It can be seen from the graph that the three PSB MUXES can still be received on an A group aerial.
Also see other relevant K group curves.
For Chesterfield we recommend the DM log for strong signal areas, the Log 40
for 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 / Unstone Transmitter OS Grid Ref SK 383 764
Note, as work takes place on various digital transmitters (to prepare for the DSO) you may
experience problems, e.g. with certain MUXES disappearing. First try rescanning your
TV / set top box (do it manually if possible), but if this fails to work check on transmitter work
or call the reception advice phone numbers. Also see basic digital fault finding.
DSO occurred at Chesterfield between the 10 and the 24 of Aug 2011.
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.
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-
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.
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
Chesterfield`s Channel Guide also includes the frequencies for most of the other transmitters receivable within Chesterfields coverage area, namely Emley Moor, Belmont, Waltham, Sutton Coldfield, Sheffield, Nottingham, Hasland and Brockwell. This information can be most useful for identifying alternative transmitters etc.
The Channel Allocation Guides can be very useful in the diagnosis of co-
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-
DSO occurred in 2011 (between the 10 and the 24 of Aug).
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`s transmission power is 400W on all MUXES apart from MUX 4 (the HD MUX), which is 800W. Pre switchover it was only 40W.
Chesterfield has no interleaved spectrum channels allocated to it but there is a possibility of 2 or 3 more MUXES being transmitted between CHs 31 and 37, all of which can be picked up by a K group (or wideband) aerial
External links
Chesterfield transmitter page on MB21
Chesterfield Transmitter page on Wikipedia
Digital UK details of Yorkshire transmitters
Note the co-
* There are a few retune events (temporary MUX reallocations) just before and after DSO which may not be shown on these tables.
Some post switchover MUX allocations (particularly CHs 61/62 and 49/50) may well be changed due to the 800MHz clearance.
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