The transmitter is situated 16 miles SW of Reading on the North Hampshire Downs and it was opened about 1970. The site height is 217m and the actual mast is 134m high with the shroud covering the analogue transmitting array being about another 20m on top of that, thus the (average) transmitting height is about 369m, see How High is High ?
The transmitter was a originally a B group, then became an E group in 1982 (when C4 broadcasts started) before returning to the B group in February 2012 at digital switchover. Being a main transmitter Hannington is horizontally polarised. Its population coverage is approximately 750,000.
The dimensions and test performance of the aerials can be found on the relevant table. If requiring a “high gain aerial” in the loft we recommend the XB10B over the XB16B because the former aerial is smaller and it can be end mounted. See Hannington`s graph.
The Channel Allocation Guide for Hannington
The frequencies given are for (most) digital MUXES, for analogue channels deduct 3MHz.
* There are a few retune events (temporary MUX reallocations) which may not be shown on these tables.
For Hannington transmitter`s TV frequencies/channels see its channel allocation guide.
These also include the same information for other potentially co-
The nearest railway to Hannington is the (ex) L&SWR line from Basingstoke to Salisbury opened in 1854, and this runs about 4 miles to the South. Until 1964 there was a railway running North to South from Didcot via Newbury to Winchester through Berghclere. This line had a fascinating history as it was originally planned as a double track but only completed as a single line in 1885 by the Didcot, Newbury & Southampton Junc Railway. However as the line ran from the industrial Midlands down to the South Coast ports it became very heavily used during WW2 and was doubled between 1942 to 1943. Unfortunately its importance then diminished so greatly that by 1964 it was closed.
However that was not quite the end of the story because the infamous Newbury bypass (that`s Swampy et al) was built on part of the ex railway lines trackbed. The actual section used was from Tot Hill to Enborne.
Hannington Transmitter OS Grid Ref SU 527 568
Also see basic digital fault finding.
Hannington switched in February 2012.
Hannington transmitter reverted to a B group at digital switchover (in February 2012), though all of its digital output was within the B group anyway.
Nearly all transmitters increased their power by a factor of 10 after DSO, so, relatively speaking, Hannington`s increase was rather less than the others. But remember that the transmitter`s easterly attenuation was abolished at switchover, so for that area a very big rise in power occurred.
There is one interleaved spectrum channel allocated to Hannington, CH29, this may be used for local TV channels for Reading and Basingstoke, see below.
In addition, there may (or may not) at some future stage, be more TV transmissions between CHs 31 and 37, but all the aforementioned channels can be picked up by decent B group aerials anyway.
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Both potential stations are designated phase 2, that is to say they`re less likely to ascend from terra firma than the phase 1 stations.