interleaved spectrum study - home - ofcom · interleaved spectrum study oxford page 323 of 526 12...

Interleaved

Spectrum Study

Olivers Mount Page 322 of 526 1 November 2007 Version 1.1

Bearing ETN Station Name Easting

Northing

Wanted FS

dBμV/m Wanted

%Location Modified %

Location

ERP Reduction

dB

Number of

points

Pop Affected

180 12099 BRIDLINGTON 503850 433550 63 90.4 87.8 15.9 7 44190 12099 BRIDLINGTON 498650 440150 68.8 91.9 89.8 4.9 6 25

Table 1: Restrictions for ch56, 1 kW omnidirectional at 51m

Interleaved Spectrum Study

Oxford Page 323 of 526 12 October 2007 Version 1.2

Oxford – 117.00 Type: Main Station Channel Usage:

Channels Investigated: 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50,51, 52, 54, 56, 58, 61 Optimal Channel for Interleaved Service: 49 Maximum ERP: 10 kW Maximum Antenna Height: 184m Permitted Template: Protect populated pixels in the DPSA

Figure 1 : Oxford template ch49, 10kW ERP at 184m


Oxford 24 of 526 12 October 2007 Version 1.2

Coverage: DTT 6 Core Gross: 458,862 Within DPSA: 295,935 Local Gross: 298,652 Local within DPSA: 197,470

Figure 2 : Oxford coverage ch49, 10kW ERP at 184m a.g.l. QPSK 2/3



Comments Coverage restrictions are detailed in table 1 and the coverage achieved by an antenna matching the template is shown in figure 2. It should be noted that coverage achieved by a real antenna system will probably be lower. Reducing the antenna height reduces the restrictions required, figure 3. Templates for the other channels investigated are shown in figure 4 Ch49, 10kW ERP at 92m a.g.l

Ch49, 10kW ERP at 46m a.g.l

Coverage at 92m Local Gross: 232,555 Local within DPSA 179,831


Figure 3 : Oxford ch49, 10kW templates at reduced height.



Other Channel Possibilities

Ch21

Ch22

Ch23

Ch24

Ch25

Ch26

Figure 4 : Oxford alternative channel templates at 10 kW ERP 184m a.g.l




Ch27

Ch28

Ch29

Ch30

Ch41

Ch42





Ch43

Ch44

Ch45

Ch46

Ch47

Ch48





Ch50

Ch51

Ch52

Ch54

Ch56

Ch58





Ch61


Interleaved

Spectrum Study


Bearing ETN Station Name Easting Northing

Wanted FS dB

dBμV/m Wanted

%Location

Modified %

Location

ERP Reduction

dB Number of

points

Pop Affected

0 10200 SUTTON COLDFIELD 456050 236850 62 91 86.8 29.5 558 6602 10 10200 SUTTON COLDFIELD 466450 268150 69.9 88.3 86.5 25.4 246 1948 20 10200 SUTTON COLDFIELD 475950 264050 64.5 83.4 79.1 28.5 400 6895 30 10200 SUTTON COLDFIELD 475650 252050 67.8 87.3 84.5 30 4 38 40 10200 SUTTON COLDFIELD 483550 240750 63.3 85.4 82 27.6 13 153 40 12403 KINGS LYNN 560150 320250 67 81.2 80.3 6.8 29 418 50 12403 KINGS LYNN 569750 316450 62.6 86.2 83.6 13.5 45 278

110 10101 GUILDFORD 524750 188650 66.2 98.7 91 0.9 1 36 120 13900 HEATHFIELD 586550 123750 71.9 89.8 87.5 3.7 3 3 120 10101 GUILDFORD 519450 170250 67.8 92.8 90.1 14 2 104 130 13900 HEATHFIELD 559150 138750 64.1 89.2 86.9 6.1 11 46 130 10104 TUNBRIDGE WELLS 551050 134550 65.5 75.1 71.8 5.1 11 28 130 10101 GUILDFORD 508050 162850 64.5 88.7 88.6 21.1 48 375 140 13900 HEATHFIELD 530950 115550 69.5 89.4 88.6 4.9 11 134 140 10101 GUILDFORD 509350 143350 59.7 87.3 84.4 27.6 52 538 150 10101 GUILDFORD 485950 158350 62.4 73.5 71.3 23.2 209 3057 150 13900 HEATHFIELD 510950 114650 71.7 91 89.1 7.9 9 16 160 10101 GUILDFORD 483850 136750 67.2 82.5 80.4 21.1 55 281 240 10600 WENVOE 379550 166550 54.5 70.2 62.7 20.5 1 2 250 10600 WENVOE 377650 187350 71.3 71.2 65.1 17.3 30 48 260 10600 WENVOE 348450 198950 67.7 96.6 89.7 17.7 32 310 270 10600 WENVOE 324950 199650 59.7 84 79.1 22.8 26 267

Table 1: Restrictions for ch49, 10kW omnidirectional at 184m

Interleaved

Spectrum Study



Wanted FS dB

dBμV/m Wanted

%Location

Modified %

Location

ERP Reduction

dB Number of

points

Pop Affected

270 10618 ABERGAVENNY 320450 215750 75.4 97.7 91.5 2.3 1 1 270 10200 SUTTON COLDFIELD 396050 214550 60.2 94.8 88.1 22 8 25 280 10200 SUTTON COLDFIELD 406850 222750 64 86.6 81.3 31 80 158 280 10618 ABERGAVENNY 344750 227250 69.1 95.1 91.2 9.6 1 1 280 11904 LLANDRINDOD WELLS 309750 241350 62 91.6 89.6 2.6 1 1 290 10200 SUTTON COLDFIELD 419050 225850 72.6 82.6 78 22.5 147 502 290 11904 LLANDRINDOD WELLS 298650 260950 56.5 84.3 81.3 5.7 1 1 290 14927 PRESTEIGNE 330450 265950 55.4 76.5 72.8 10.5 1 2 300 10200 SUTTON COLDFIELD 417950 229550 57.9 87.9 82.9 38.2 348 3096 300 14906 OAKELEY MYND 330950 290050 71.4 72.6 71.7 0.8 1 1 310 10200 SUTTON COLDFIELD 431450 228550 78.3 88.3 86.4 25.9 856 5684 310 14500 MOEL Y PARC 296650 353950 54.8 75.7 72.5 2.7 2 2 320 10200 SUTTON COLDFIELD 436050 237450 68.5 92.2 88.1 31.9 1211 13828 330 10200 SUTTON COLDFIELD 439250 245150 61.8 88 83.7 26.5 584 8065 340 10200 SUTTON COLDFIELD 443650 243850 62 91.6 87.3 31.5 3662 51219 350 10200 SUTTON COLDFIELD 430950 362450 57.6 88.8 83.7 31.5 1357 11760



Pendle Forest Page 333 of 526 1 November 2007 Version 1.1

Pendle Forest – 103.02 Type: Relay Channel Usage:

Channels Investigated: 23, 26, 29, 30 Optimal Channel for Interleaved Service: ch30 Maximum ERP: 1 kW Maximum Antenna Height: 51m Permitted Template: Protect populated pixels in the DPSA

Figure 1 : Pendle Forest template ch30, 1kW ERP at 51m



Coverage: DTT 6 Core Gross: 117,876 Within DPSA: 56,766 Local Gross: 177,809 Local within DPSA 56,888

Figure 2 : Pendle Forest coverage ch30, 1 kW ERP at 51m a.g.l. QPSK 2/3



Comments There were no restrictions on Ch30, the coverage achieved by an antenna matching the template is shown in figure 2. It should be noted that coverage achieved by a real antenna system will probably be lower. Templates for the other channels investigated are shown in figure 3 Other Channel Possibilities

Ch23

Ch26

Ch29

Figure 3 : Pendle Forest alternative channel templates at 1 kW ERP 51m a.g.l


Plympton Page 336 of 526 1 November 2007 Version 1.1

Plympton – 131.05 Type: Relay Station Channel Usage:

Channels Investigated: 30, 41, 43, 44, 46, 47, 48, 49, 50, 51, 52, 53, 55, 57, 59, 60, 62 Optimal Channel for Interleaved Service: Ch49 Maximum ERP: 1 kW Maximum Antenna Height: 50 m Permitted Template: Protect populated pixels in the DPSA

Figure 1 : Plympton template ch49, 1 kW ERP at 50m



Coverage: DTT 6 Core Gross: 72,005 Within DPSA: 43,075 Local Gross: 114,974 Local within DPSA 41,357

Figure 2: Plympton coverage ch49, 1 kW ERP at 50m a.g.l. QPSK 2/3



Comments Coverage restrictions are detailed in table 1 and the coverage achieved by an antenna matching the template is shown in figure 2. It should be noted that coverage achieved by a real antenna system will probably be lower. Reducing the antenna height reduces the restrictions required figure 3. Templates for the other channels investigated are shown in figure 4

Ch49, 1 kW ERP at 25m a.g.l


Figure 3 : Plympton ch49 template at reduced height.




Ch30

Ch41

Ch43

Ch44

Ch46

Ch47

Figure 4: Plympton alternative channel templates at 1 kW ERP 50m a.g.l




Ch48

Ch50

Ch51

Ch52

Ch53

Ch55





Ch57

Ch59

Ch60

Ch62


Interleaved

Spectrum Study



Wanted FS dB

dBμV/m Wanted

%Location

Modified %

Location

ERP Reduction

dB Number of points

Pop Affected

60 13115 IVYBRIDGE 260350 59150 66.8 81.1 80.9 18 13 9970 13115 IVYBRIDGE 261050 58750 62.2 74 72.3 17.9 5 680 13115 IVYBRIDGE 269950 56950 67 88.8 88.9 38.1 27 20690 13115 IVYBRIDGE 263050 55850 63.6 83.3 83.3 29.3 30 358

100 13115 IVYBRIDGE 264850 53550 67 99.8 90.1 2.6 1 3110 13115 IVYBRIDGE 266050 51550 71.5 99.7 90.5 5.2 1 22120 13115 IVYBRIDGE 258950 52450 60.1 81.8 80.5 13.3 1 6130 13115 IVYBRIDGE 257950 51750 57.8 81.1 78.5 24.3 4 67150 13115 IVYBRIDGE 255250 52250 65.4 80.6 79.5 36.8 1 1180 13115 IVYBRIDGE 253350 51550 71.4 99.2 90.9 8.8 1 1

280 13141 PLYMOUTH WESTON MILL 244750 57650 79.9 100 89.2 6.8 1 15



Pontop Pike Page 343 of 526 3 October 2007 Version 1.1

Pontop Pike – 109.00 Type: Main Station Channel Usage:

Channels Investigated: 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 56, 57, 60 Optimal Channel for Interleaved Service: Ch56 Maximum ERP: 10 kW Maximum Antenna Height: 145m Permitted Template: Protect populated pixels in the DPSA

Figure 1 : Pontop Pike template ch56, 10kW ERP at 145m



Coverage: DTT 6 Core Gross: 1,30,682 Within DPSA: 353,808 Local Gross: 1,177,835 Local within DPSA: 370,612

Figure 2 : Pontop Pike coverage ch56, 10kW ERP at 145m a.g.l. QPSK 2/3



Comments Coverage restrictions are detailed in table 1 and the coverage achieved by an antenna matching the template is shown in figure 2. Reducing the antenna height reduces the restrictions required figure 3. Templates for the other channels investigated are shown in figure 4

Ch56, 10kW ERP at 73m a.g.l Coverage at 73m Local Gross: 1,129,888 Local within DPSA 363,794

Figure 3 : Pontop Pike ch56 template at reduced height.




Ch43

Ch44

Ch45

Ch46

Ch47

Ch48

Figure 4 : Pontop Pike alternative channel templates at 10 kW ERP 145m a.g.l.




Ch49

Ch50

Ch51

Ch52

Ch53

Ch57





Ch60


Interleaved

Spectrum Study

Pontop Pike Page 349 of 526 1 November 2007 Version 1.1

Bearing ETN Station Name Easting

Northing

Wanted FS dBμV/m

Wanted %Location

Modified %

Location

ERP Reduction

dB

Number of

points

Pop Affected

160 11100 WALTHAM 471350 380050 61.8 84.3 80.8 0.9 1 8


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