ENR 4  RADIO NAVIGATION AIDS/SYSTEMS

ENR 4.1  RADIO NAVIGATION AIDS - EN-ROUTE

Name of station (VOR/VAR)IdFrequency (CH)Hours of operationCo-ordinatesELEV DME antennaRemarks
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BANGKOK

DVOR/DME

 BKK

117.7 MHz

(CH 124X)

H24

135336.8N

1003546.3E

16.58 m

DVOR/DME restriction due to obstacles surround DVOR/DME station, coverage check does not provide adequate signal 40 NM at required altitude in various areas as follows:

  1. Radial 321°-030° altitude should not below 2 500 ft

  2. Radial 031°-060° altitude should not below 4 000 ft

  3. Radial 061°-120° altitude should not below 3 000 ft

  4. Radial 121°-320° altitude should not below 4 000 ft

BETONG

DVOR/DME

BET

113.1 MHz

(CH 78X)

H24

054707.7N

1010838.7E

DVOR/DME restrictions,

  1. Due to mountainous terrain surround DVOR/DME station, coverage check does not provide adequate signal to 40 NM at required altitude and distance in various areas as follows:

    1. Radial 350°-020° altitude should not below 8 000 ft

    2. Radial 021°-040° altitude should not below 6 500 ft

    3. Radial 041°-060° altitude should not below 9 000 ft

    4. Radial 061°-075° altitude should not below 15 000 ft

    5. Radial 076°-349° unable to check due to border limit

BURI RAM

DVOR/DME

 BRM

117.2 MHz

(CH 119X)

H24

1031531.6E

-

DVOR/DME restriction due to mountainous terrain surround DVOR/DME station, coverage check does not provide adequate signal clockwise orbit 40 NM at required altitude in various areas as follows:

  1. Radial 091°-140° altitude should not below 3 500 ft

  2. Radial 141°-240° altitude should not below 5 000 ft

  3. Radial 241°-280° altitude should not below 4 000 ft

  4. Radial 281°-090° altitude should not below 2 500 ft

CHIANG MAI

DVOR/DME

 CMA

116.9 MHz

(CH 116X)

H24

184558.1N

0985740.4E

318 m

DVOR/DME restriction due to mountainous terrain surround station coverage check does not provide adequate signal at required altitudes in various areas as follows:

  1. 40 NM Orbit

    1. Radial 350º-080º altitude should not below 8 000 ft

    2. Radial 081º-180º altitude should not below 7 000 ft

    3. Radial 181º-240º altitude should not below 9 000 ft

  2. 20 NM Orbit (Due to mountainous terrain)

    1. Radial 241º-349º altitude should not below 12 000 ft

CHIANG RAI

DVOR/DME

 CTR

116.5 MHz

(CH 112X)

H24

195655.9N

0995259.3E

-

DVOR/DME restriction due to mountainous terrain surround DVOR/DME station, coverage check does not provide adequate signal at the required altitude in various areas as follows:

  1. 40 NM

    1. Radial 141º-180º altitude should not below 5 000 ft

    2. Radial 181º-210º altitude should not below 7 500 ft

    3. Radial 211º-255º altitude should not below 9 000 ft

    4. Radial 256º-265º altitude should not below 10 000 ft

    5. Radial 266º-270º altitude should not below 9 000 ft

  2. 20 NM (Due to border limited)

    1. Radial 271º-340º altitude should not below 6 500 ft

    2. Radial 341º-140º altitude should not below 5 000 ft

CHUM PHAE

DVOR/DME

 CMP

112.9 MHz

(CH 76X)

163807N

1015920E

-

DVOR/DME restrictions,

  1. Due to mountainous terrain surround DVOR/DME station, during radial check found roughness and bends out of tolerance, DVOR/DME unusable on radial as follows:

    1. Radial 102° distance between 9.5-10.5 DME at altitude 4 500 ft

    2. Radial 223º distance between 11.0-12.0 DME at altitude 5 000 ft

    3. Radial 273º distance between 13.0-14.0 DME at altitude 6 000 ft

    4. Radial 343º distance between 6.0-8.5 DME at altitude 5 500 ft

  2. Due to mountainous terrain surround DVOR/DME station, coverage check does not provide adequate signal to 40 NM at required altitudes and distances in various areas as follows:

    1. Radial 001º-010º altitude should not below 5 500 ft

    2. Radial 011º-080º altitude should not below 4 500 ft

    3. Radial 081º-105º altitude should not below 7 000 ft

    4. Radial 106º-120º altitude should not below 6 000 ft

    5. Radial 121º-190º altitude should not below 5 000 ft

    6. Radial 191º-230º altitude should not below 6 000 ft

    7. Radial 231º-260º altitude should not below 8 000 ft

    8. Radial 261º-310º altitude should not below 7 000 ft

    9. Radial 311º-330º altitude should not below 8 000 ft

    10. Radial 331º-350º altitude should not below 5 500 ft

    11. Radial 351º-360º altitude should not below 6 500 ft

CHUM PHON

DVOR/DME

 CPN

110 MHz

(CH 37X)

H24

104240.3N

0992156.1E

5.50 m

(18 ft)

DVOR/DME restriction, due to mountainous terrain surround DVOR/DME station, coverage check does not provide adequate signal clockwise orbit at the required altitude and distance in various areas as follows:

  1. 40 NM

    1. Radial 011°-020° altitude should not below 5 000 ft

    2. Radial 021°-050° altitude should not below 4 000 ft

    3. Radial 051°-100° altitude should not below 2 000 ft

    4. Radial 101°-110° altitude should not below 4 000 ft

    5. Radial 111°-190° altitude should not below 2 000 ft

    6. Radial 191°-225° altitude should not below 4 000 ft

    7. Radial 226°-230° altitude should not below 6 000 ft

  2. 30 NM (Due to border limited)

    1. Radial 231°-270° altitude should not below 5 000 ft

  3. 20 NM (Due to border limited)

    1. Radial 271°-010° altitude should not below 5 000 ft

HAT YAI

DVOR/DME

 HTY

115.3 MHz

(CH 100X)

H24

065602.8N

1002316.6E

37.3 m

DVOR/DME restriction, due to mountainous terrain surround DVOR/DME station coverage check does not provide adequate signal to 40 NM at the required altitude in various areas as follows:

  1. Radial 171º- 240º at 10 NM ALT should not below 5 000 ft

  2. Radial 131º- 170º at 20 NM ALT should not below 4 000 ft

  3. Radial 031º-130º at 40 NM ALT should not below 5 000 ft

  4. Radial 241º- 270º at 40 NM ALT should not below 7 000 ft

  5. Radial 271º- 300º at 40 NM ALT should not below 10 000 ft

  6. Radial 301º- 330º at 40 NM ALT should not below 6 000 ft

  7. Radial 331º- 030º at 40 NM ALT should not below 3 000 ft

HUA HIN

DVOR/DME

 HHN

113.3 MHz

(CH 80X)

H24

123803.9N

0995704.2E

-

DVOR/DME restriction, due to terrain surround DVOR/DME station coverage check does not provide adequate signal 40 NM at required altitude in various areas as follows:

  1. 40 NM clockwise orbit

    1. Radial 001°-170° altitude should not below 3 000 ft

    2. Radial 171°-210° altitude should not below 7 000 ft

    3. Radial 301°-340° altitude should not below 10 000 ft

    4. Radial 340°-360° altitude should not below 3 000 ft

  2. 30 NM clockwise orbit (Due to border limited)

    1. Radial 211°- 300° altitude should not below 10 000 ft

  3. Radial 341° distance 10.3 DME at altitude 4 000 ft found roughness out of tolerance

KAMPHAENG SAEN

DVOR/DME

 KPS

114.5 MHz

(CH 92X)

2300-1100

140956N

0995715E

-

KHON KAEN

DVOR/DME

 KKN

114.9 MHz

(CH 96X)

H24

-

DVOR/DME restriction due to terrain surround DVOR/DME station, coverage check does not provide adequate signal 40 NM at required altitude in various areas as follows:

  1. Radial 001°-080° altitude should not below 2 500 ft

  2. Radial 081°-220° altitude should not below 2 000 ft

  3. Radial 221°-360° altitude should not below 3 500 ft

KHORAT

DVOR/DME

 KRT

113.7 MHz

(CH 84X)

H24

145502.3N

1020823.3E

-

DVOR/DME restriction due to mountainous terrain surround DVOR/DME station, coverage check does not provide adequate signal clockwise orbit 40 NM at required altitude in various areas as follows:

  1. Radial 081°-280° altitude should not below 5 000 ft

  2. Radial 281°-080° altitude should not below 3 500 ft

KRABI

DVOR/DME

 KBI

111 MHz

(CH 47X)

H24

080627.0N

0985839.0E

-

DVOR/DME restriction due to mountainous terrain surround DVOR/DME station, coverage check does not provide adequate signal to 40 NM at required altitude in various areas as follows:

  1. Radial 001º-180º altitude should not below 5 500 ft

  2. Radial 181º-200º altitude should not below 7 000 ft

  3. Radial 201º-340º altitude should not below 10 000 ft

  4. Radial 341º-360º altitude should not below 15 500 ft

LAMPANG

DVOR/DME

 LPN

114.7 MHz

(CH 94X)

H24

181635.9N

0993008.4E

-

DVOR/DME restriction, due to terrain surround DVOR/DME station coverage check does not provide adequate signal to 40 NM at required altitudes in various areas as follows:

  1. Radial 351º-070º beyond 40 NM should not below 6 000 ft

  2. Radial 071º-130º beyond 30 NM should not below 6 000 ft

  3. Radial 131º-320º beyond 40 NM should not below 6 000 ft

  4. Radial 321º-350º beyond 30 NM should not below 6 000 ft

LOEI

DVOR/DME

 LOY

115.9 MHz

(CH 106X)

H24

172649.4N

1014323.2E

-

DVOR/DME restriction,

  1. Unusable due to roughness out of tolerance

    1. Radial 020° between 10-11 DME altitude 3 000 ft

    2. Radial 243° between 7-8 DME altitude 6 000 ft and between 32-33 DME altitude 7 500 ft

  2. Due to mountainous terrain surround DVOR/DME station, coverage check does not provide adequate signal to 40 NM at the required altitude in various areas as follows:

    1. 40 NM orbit

      1. Radial 030°-050° altitude should not below 10 000 ft

      2. Radial 051°-100° altitude should not below 7 000 ft

      3. Radial 101°-130° altitude should not below 10 000 ft

      4. Radial 131°-200° altitude should not below 5 000 ft

      5. Radial 201°-250° altitude should not below 12 000 ft

      6. Radial 251°-270° altitude should not below 13 000 ft

    2. 20 NM orbit (Due to border limited)

      1. Radial 271°-029° altitude should not below 4 500 ft

MAE HONG SON

DVOR/DME

 MHS

115.5 MHz

(CH 102X)

H24

191911.1N

0975443.6E

-

DVOR/DME restrictions,

  1. Unusable due to roughness out of tolerance

    1. Radial 040° distance between 10.5-12.5 DME altitude 5 500 ft

    2. Radial 085° distance between 5.5-7.5 DME altitude 7 000 ft

    3. Radial 100° distance between 9.0-10.0 DME altitude 7 000 ft

    4. Radial 120° distance between 9.5 - 10.5 DME altitude 7 500 ft

  2. Due to mountainous terrain surround DVOR/DME station, coverage check does not provide adequate signal to 40 NM at the required altitude in various areas as follows:

    1. Radial 060°-080° altitude should not below 8 500 ft

    2. Radial 081°-140° altitude should not below 13 000 ft

    3. Radial 141°-190° altitude should not below 9 000 ft

    4. Radial 191°-059° unable to perform due to border limited

MAE SOT

DVOR/DME

 MST

116.7 MHz

(CH 114X)

H24

164152.1N

0983229.7E

-

DVOR/DME restrictions,

  1. Unusable due to roughness out of tolerance

    1. Radial 104° distance between 6.0-13.0 DME altitude 5 500 ft

    2. Radial 012° distance between 22.0-24.0 DME altitude 5 000 ft

    3. Radial 124° distance between 32.0-34.0 DME altitude 6 600 ft

  2. Due to mountainous terrain surround DVOR/DME station, coverage check does not provide adequate signal clockwise orbit 40 NM at the required altitude in various areas as follows:

    1. Radial 000°-030° altitude should not below 7 000 ft

    2. Radial 031°-060° altitude should not below 9 000 ft

    3. Radial 061°-070° altitude should not below 10 000 ft

    4. Radial 071°-120° altitude should not below 9 000 ft

    5. Radial 121°-360° unable to perform due to border limited

NAKHON PHANOM

DVOR/DME

 NKP

111.6 MHz

(CH 53X)

H24

172317.9N

1043818.1E

 600 ft

DVOR/DME restriction due to mountainous terrain surround DVOR/DME station, coverage check does not provide adequate signal to 40 NM at required altitudes in various areas as follows:

  1. Radial 181°-190° altitude should not below 2 500 ft

  2. Radial 191°-260° altitude should not below 4 000 ft

  3. Radial 261°-320° altitude should not below 2 500 ft

  4. Radial 321°-180° unable to check (Due to border limited)

NAKHON SI THAMMARAT

DVOR/DME

 NKS

117.4 MHz

(CH 121X)

H24

083230.0N

0995648.7E

-

Due to mountainous terrain surround DVOR/DME station coverage check does not provide adequate signal to 40 NM at required altitudes is various areas:

  1. Radial 001º-190º beyond 40 NM should not below 2 500 ft

  2. Radial 191º-240º beyond 40 NM should not below 7 000 ft

  3. Radial 241º-280º beyond 25 NM should not below 8 000 ft

  4. Radial 281º-320º beyond 40 NM should not below 7 000 ft

  5. Radial 321º-360º beyond 40 NM should not below 5 000 ft

NAN

DVOR/DME

 NAN

115.7 MHz

(CH 104X)

H24

184832.8N

1004657.4E

-

DVOR/DME restriction, due to mountainous terrain surround DVOR/DME station coverage check does not provide adequate signal to 40 NM at the required altitude in various areas as follows:

  1. Radial 011º-110º at 20 NM should not below 8 000 ft

  2. Radial 111º-160º at 20 NM should not below 6 000 ft

  3. Radial 161º-180º at 40 NM should not below 6 000 ft

  4. Radial 181º-330º at 40 NM should not below 7 000 ft

  5. Radial 311º-010º at 40 NM should not below 8 000 ft

NARATHIWAT

DVOR/DME

NTW 116.3 MHz

(CH 110X)

H24

063138.2N

1014442.5E

-

DVOR/DME restriction,

  1. Due to mountainous terrain surround DVOR/DME station, coverage check does not provide adequate signal to 40 NM at the required altitude in various areas as follows:

    1. 40 NM clockwise orbit flown from

      1. Radial 271º-290º altitude should not below 9 000 ft

      2. Radial 291º-300º altitude should not below 4 000 ft

      3. Radial 301º-020º altitude should not below 2 000 ft

    2. 20 NM clockwise orbit flown from

      1. Radial 021º-130º altitude should not below 2 000 ft

      2. Radial 131º-270º altitude should not below 5 000 ft

  2. Due to the out-of-tolerance 30 Hz FM deviation ratio on radial 294º unusable within 10-40 NM.

PHETCHABUN

DVOR/DME

 PCB

115.4 MHz

(CH 101X)

H24

164033.6N

1011147.9E

-

DVOR/DME restrictions,

  1. Unusable due to roughness out of tolerance on radial 277° distance between 7-9 DME altitude 5 500 ft

  2. Due to mountainous terrain surround DVOR/DME station, coverage check does not provide adequate signal to 40 NM at the required altitude in various areas as follows:

    1. Radial 061°-230° beyond 30 NM altitude should not below 6 500 ft

    2. Radial 231°-320° beyond 30 NM altitude should not below 8 000 ft

    3. Radial 321°-060° beyond 40 NM altitude should not below 7 500 ft

PHITSANULOK

DVOR/DME

 PSL

114.1 MHz

(CH 88X)

H24

164613.3N

1001729.0E

-

DVOR/DME restriction due to mountainous terrain surround DVOR/DME station, coverage check does not provide adequate signal to 40 NM at the required altitude in various areas as follows:

  1. Radial 351°-120° altitude should not below 5 500 ft

  2. Radial 121°-270° altitude should not below 3 000 ft

  3. Radial 271°-300° altitude should not below 5 000 ft

  4. Radial 301°-350° altitude should not below 3 500 ft

PHRAE

DVOR/DME

 PAE

111.8 MHz

(CH 55X)

H24

180802.9N

1000958.5E

-

DVOR/DME restrictions,

  1. Unusable due to roughness out of tolerance on radial 146° distance between 7.0-8.0 DME altitude 7 000 ft

  2. Due to mountainous terrain surround DVOR/DME station, coverage check does not provide adequate signal to 40 NM at the required altitude in various areas as follows:

    1. Radial 055º-080º altitude should not below 9 000 ft

    2. Radial 081º-160º altitude should not below 11 000 ft

    3. Radial 161º-180º altitude should not below 8 000 ft

    4. Radial 181º-350º altitude should not below 6 000 ft

    5. Radial 351º-054º altitude should not below 6 500 ft

PHUKET

DVOR/DME

 PUT

116.9 MHz

(CH 116X)

H24

080650.3N

0981825.2E

16.72 m

DVOR/DME restriction, due to mountainous terrain surround DVOR/DME station coverage check does not provide adequate signal to 40 NM at the required altitude in various areas as follows:

  1. Radial 360º-030º altitude should not below 5 500 ft

  2. Radial 031º-170º altitude should not below 9 000 ft

  3. Radial 171º-220º altitude should not below 7 000 ft

  4. Radial 221º-359º altitude should not below 3 000 ft

RANONG

DVOR/DME

 RAN

113.4 MHz

(CH 81X)

H24

094640.7N

0983501.4E

-

DVOR/DME restriction due to mountainous terrain surround DVOR/ DME station coverage, check does not provide adequate signal to 40 NM at the required altitude in various areas as follows:

20 NM orbit

  1. Radial 020°-040° altitude should not below 6 000 ft

  2. Radial 041°-060° altitude should not below 12 000 ft

  3. Radial 061°-120° altitude should not below 16 000 ft

  4. Radial 151°-170° altitude should not below 9 000 ft

40 NM orbit

  1. Radial 121°-150° altitude should not below 16 000 ft

  2. Radial 171°-187° altitude should not below 12 000 ft

  3. Radial 188°-230° altitude should not below 7 000 ft

  4. Radial 231°-019° unable to fly due to border limited.

RAYONG

DVOR/DME

 RYN

112.5 MHz

(CH 72X)

H24

124643.1N

1014035.2E

-

DVOR/DME restriction due to mountainous terrain surround DVOR/DME station, coverage check does not provide adequate signal clockwise orbit 40 NM at required altitude in various areas as follows:

  1. Radial 011º-040º altitude should not below 9 000 ft

  2. Radial 041º-050º altitude should not below 4 000 ft

  3. Radial 051º-080º altitude should not below 6 000 ft

  4. Radial 081º-240º altitude should not below 4 000 ft

  5. Radial 240º-010º altitude should not below 5 000 ft

ROI-ET

DVOR/DME

 ROT

111.2 MHz

(CH 49X)

H24

160700.6N

1034619.5E

-

Coverage orbit data refer from commissioning checked as follows:

  1. 40 NM clockwise orbit flown from radial 001°-360° altitude should not below 2 000 ft

  2. Airway W5 flown to 40 NM at 2 000 ft was checked and found satisfactory

SAKON NAKHON

DVOR/DME

 SKN

114.2 MHz

(CH 89X)

H24

171250.8N

1040812.4E

-

DVOR/DME restriction due to mountainous terrain surround DVOR/DME station, coverage check does not provide adequate signal at required altitude in various areas as follows:

  1. 30 NM orbit (Due to border limited)

    1. Radial 000º-130º altitude should not below 2 100 ft

  2. 40 NM orbit

    1. Radial 131º-280º altitude should not below 5 500 ft

    2. Radial 281º-359º altitude should not below 2 100 ft

SONGKHLA

DVOR/DME

 SKL

113.5 MHz

(CH 82X)

H24

071119.65N

1003615.11E

-Military facility
SAMUI

DVOR/DME

 SMU

117.6 MHz

(CH 123X)

H24

093249.3N

1000342.3E

24 m

DVOR/DME restriction due to mountainous terrain surround DVOR/DME station, coverage check does not provide adequate signal at required altitude in various areas as follows:

  1. Radial 000º-015º beyond 25 NM altitude should not below 4 000 ft

  2. Radial 016º-040º beyond 25 NM altitude should not below 6 000 ft

  3. Radial 041º-060º beyond 20 NM altitude should not below 11 000 ft

  4. Radial 061º-070º beyond 25 NM altitude should not below 9 000 ft

  5. Radial 071º-120º beyond 40 NM altitude should not below 11 000 ft

  6. Radial 121º-180º beyond 40 NM altitude should not below 5 000 ft

  7. Radial 181º-210º beyond 25 NM altitude should not below 8 000 ft

  8. Radial 211º-260º beyond 20 NM altitude should not below 9 000 ft

  9. Radial 261º-280º beyond 25 NM altitude should not below 7 000 ft

  10. Radial 281º-360º beyond 40 NM altitude should not below 8 000 ft

SURAT THANI

DVOR/DME

 STN

110.6 MHz

(CH 43X)

H24

090746.2N

0990805.1E

-

DVOR/DME restriction, due to mountainous terrain surround DVOR/DME station coverage orbit 40 NM as follows:

  1. Radial 001º-070º altitude should not below 1 500 ft

  2. Radial 071º-090º altitude should not below 3 500 ft

  3. Radial 091º-150º altitude should not below 5 000 ft

  4. Radial 151º-190º altitude should not below 1 500 ft

  5. Radial 191º-360º altitude should not below 4 000 ft

  6. Radial 227º distance approximate 10-13 DME out of tolerance roughness and scalloping

SUKHOTHAI

NDB

THS

292 kHz

H24

171406.8N

0994919.3E

-

  1. Route coverage checked on bearing 021° from THS to PR altitude 9 000 ft flown to 57 NM found satisfactory

  2. Coverage 50 NM clockwise orbit data refer from commissioning checked as follows:

    1. Bearing 041°-100° at altitude 4 000 ft

    2. Bearing 101°-190° at altitude 2 000 ft

    3. Bearing 191°-040° at altitude
      5 000 ft

TAKHLI

NDB

 TL

350 kHz

H24

151633.45N

1001751.11E

-

TAK

NDB

 TK

332 kHz

H24

165358.2N

0991508.0E

  1. Route coverage checked and result found satisfactory as follows:

    1. Bearing 098° from TK to PSL altitude 7 000 ft flown to 60 NM

    2. Bearing 254° from TK to MST altitude 7 000 ft flown to 43 NM

  2. Coverage 15 NM clockwise orbit data refer from commissioning checked as follows:

    1. Bearing 001°-360° at altitude 3 500 ft

TRANG

DVOR/DME

 TRN

116.6 MHz

(CH 113X)

H24

073032.1N

0993733.7E

-

DVOR/DME restriction due to mountainous terrain surround DVOR/DME station, coverage check does not provide adequate signal at the required altitude in various areas as follows:

  1. 20 NM orbit

    1. Radial 081°-130° altitude should not below 6 000 ft

  2. 40 NM orbit

    1. Radial 131°-350° altitude should not below 4 000 ft

    2. Radial 351°-030° altitude should not below 6 000 ft

    3. Radial 031°-080° altitude should not below 7 000 ft

TRAT

NDB

 TRT

384 kHz


(CH 36X)

H24

121628.1N

1021850.1E

-

NDB restriction, due to mountainous terrain surround NDB station, coverage check does not provide adequate signal clockwise 50 NM orbit at altitude in various areas as follows:

  1. Bearing 001º-145º unable to performed due to border limited

  2. Bearing 146º-320º altitude should not below 5 000 ft

  3. Bearing 321º-360º altitude should not below 8 000 ft

UBON

DVOR/DME

 UBL

112.7 MHz

(CH 74X)

H24

151442.7N

1045157.2E

-

DVOR/DME restriction

  1. Due to obstacles surround DVOR/DME station, coverage check does not provide adequate signal clockwise orbit at required altitude in various areas as follows:

    1. 40 NM

      1. Radial 111°-155° altitude should not below 3 000 ft

      2. Radial 156°-165° altitude should not below 7 000 ft

      3. Radial 166°-200° altitude should not below 5 000 ft

      4. Radial 201°-070° altitude should not below 3 000 ft

    2. 30 NM (Due to border limit)

      1. Radial 071°-110° altitude should not below 2 000 ft

  2. During 6 NM orbit found 30 Hz.
    AM modulation is fluctuated within
    29%-50% between radial 170°-190°. UBON DVOR/DME unusable between radial 170°-190° (CW) beyond 10 NM altitude 2 000 ft

UDON

DVOR/DME

 UDN

114.3 MHz

(CH 90X)

H24

172305.2N

1024629.8E

-

DVOR/DME restriction, due to mountainous terrain surround DVOR/DME station coverage check does not provide adequate signal at required altitudes in various areas as follows:

  1. 15 NM orbit

    1. RDL 277º-280º ALT should not below 5000 ft

  2. 20 NM orbit (due to border limited)

    1. RDL 331º- 030º ALT should not below 2500 ft

  3. 40 NM orbit

    1. RDL 031º- 090º ALT should not below 3000 ft

    2. RDL 091º-190º ALT should not below 4000 ft

    3. RDL 191º- 268º ALT should not below 5000 ft

    4. RDL 269º- 276º ALT should not below 8000 ft

    5. RDL 281º- 330º ALT should not below 5000 ft

  4. The En-route radial 275 (W15) beyond 20 NM ALT 6500 ft the DVOR/DME signal out of tolerance.

U-TAPAO

DVOR/DME

 BUT

110.8 MHz

(CH 45X)

H24

124000.02N

1010001.71E

-

DVOR/DME restriction, due to mountainous terrain surround DVOR/DME station, coverage check does not provide adequate signal clockwise orbit 40 NM at required altitude and distance in various areas:

  1. Radial 101°-170° altitude should not below 2 000 ft

  2. Radial 171°-250° altitude should not below 6 000 ft

  3. Radial 251°-320° altitude should not below 8 000 ft

  4. Radial 321°-050° altitude should not below 6 000 ft

  5. Radial 051°-100° altitude should not below 4 000 ft