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A.T.V   (Aerials and Television) est. 1994
419 Langsett Rd
Hillsborough
Sheffield
S6 2LL
Tel : 0114 285 4254
© 2008 Justin Smith A.T.V
All Rights reserved
Free P&P for orders over £100, Online or by Phone
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Rowridge Transmitter                                    OS Grid Ref SZ 447 865

Note As work takes place on various digital transmitters (to prepare for the DSO)
 you may experience reception  problems, e.g. with certain MUXES disappearing.
First try rescanning your set top box and if this fails to work check on Transmitter work  
or phone reception advice on 08700 100 123 (BBC) or 0844 881 4150 (ITV).

Rowridge transmitter is situated 3 miles SW of Newport on the Isle of Wight, that`s about
15 miles due South of Southampton. Rowridge transmitters population coverage is around 1.75 million and its broadcasts can be picked up in many areas along the South Coast including Portsmouth, Southampton, Bournemouth, Fareham and Weymouth.
Power output is 500kW (erp) analogue and 20kW on all Digital / Freeview output.
The structure is stayed spaceframe mast with a height of 135m and a site height of 137m.
Rowridge is horizontally polarised and is an A group for the 4 analogue channels plus all
the digital. Note that MUX 2 was out of band on CH52 but it is now within the A group on CH28. Although no analogue C5 is transmitted from Rowridge it is broadcast (at 10kW) within band from Fawley, it is actually the power stations chimney ! The latter is 10 miles
to the North and so is co-receivable for most locations. Channel 5 is broadcast on the
digital MUX3. Rowridge has thirty five smaller repeaters to increase its signal coverage.
For Rowridge transmitter`s TV frequencies/channels see its Channel Allocation Guides
for before and after the DSO. These also include the same information for other potentially co-receivable transmitters within the Rowridge coverage area, namely Midhurst, Heathfield, Crystal Palace, Whitehawk Hill (Brighton), Guildford, Hannington, Mendip, Oxford,
Salisbury, Stockland Hill and Beacon Hill. This information can be very useful for identifying possible causes of co-channel interference or other transmitters which may give a superior signal. They 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.
Ofcom report that Rowridge does not transmit anything to the South, as one would expect ! DSO is due to occur in February 2012. Unsurprisingly it has been confirmed by Ofcom that Rowridge will stay as an A group at DSO.
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Rowridge TV transmitter                                      (picture MB21)

Fawley Channel 5 Transmitter, the transmitting arrays are located on the chimney ( ! ) and

a close up is provided below. The C5 transmitters are the white boxes mounted on the steel framework.                                                                                         (Pictures MB21)

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Rowridge transmitter`s channels in relation to the TV band and the gain of the aerials we recommend for it.   DM Log    Log40    Yagi18A    XB16A

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Rowridge television transmitters frequencies/channels for before the DSO (above) and

for after it, below.

Also check Rowridge`s thirty five smaller repeaters

Note the gaps in the table below for channels 31 to 35, 37, 39 to 40 and 63 to 68, they`re reserved for “other uses”....

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We recommend the DM log aerial for strong signal areas, the Log 40 for medium signal areas, the Yagi18A for poor signal areas and the XB16A for those with the most marginal signals. The dimensions and test performance of the antennas can be found on the relevant tables. The prices of the aerials are on the Sales page.

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The channel planners were able to fit the Digital MUXES (transmitted at 20kW) within the

A group along with the analogue stations, so an aerial change may not be necessary. Furthermore those in poor reception areas, who may require an

upgrade, can take advantage of the superior performance of an A group aerial over a wideband. In fact such is the widebands inferiority at the bottom of the band that there is

no such thing as a “High Gain” wideband aerial for the A group frequencies and nobody should ever fit a “high gain” wideband on an A group transmitter, e.g Rowridge.

If the site is in a poor spot an A 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 Rowridge Graph

It is not uncommon for many on Rowridge to suffer from co-channel interference during periods of high pressure due to picking up continental transmissions. This is particularly likely if you are situated to the North or North West of the transmitter and therefore your aerials point towards France. An attenuator (preferably a variable one) may prove beneficial under these circumstances, conversely, an amplifier would probably make things worse.