NDB & Beacons
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LAST UPDATED: 5th March 2021

NON DIRECTIONAL BEACONS (NDB) & OTHER BEACONS

NDB’s (and Marine Beacons)

My main area of interest with regard to beacons is logging airport/airfield NDB’s (Non Directional Beacons) which are used by mainly light aircraft to determine their current location and direction. There are still hundreds of NDB’s active, but they are slowly closing and being replaced with satellite/GPS based systems. See below for more information on NDB, Marine and various ham radio beacons.

Maritime beacons are used by shipping for navigation and their callsigns usually consist of 1 or 2 letters sent in Morse Code at a speed of around 8wpm (words per minute). There are fewer of these maritime beacons around now as navigation is being dealt with by GPS and other satellite technologies but you can still hear some.

Non Directional Beacons (NDB’s) are used by aircraft for navigation purposes. They, like the maritime beacons, mostly inhabit the part of the spectrum between Long Wave and Medium Wave (i.e. 270-500kHz approximately). NDB’s identify by sending their call letters in Morse code and usually consist of 2 or 3 letters (which quite often bear a relationship to the actual location of the beacon). Again, these beacons send their callsign at 8wpm or so. NDBs transmit a continuous carrier on their designated frequency with the callsign/ident spaced at either 400Hz or 1020Hz either side of the carrier. NDBs are allocated frequencies based on what other beacons in the same geographical area. Carrier frequencies allocated will end in in either a whole or half kHz (0.5 or 1kHz). One thing to note though, is that most NDBs transmit a few Hz from their nominal allocated frequency. This could be due to the age of the transmitter (the crystals that are used to set the frequency can change characteristics over time, which will change the frequency by some amount. Also extreme weather can affect frequency accuracy (ice build up on the antenna can change its resonant frequency which will affect the radiation pattern of the antenna, etc. Various lists on the internet list the NDB callsign together with its allocated frequency and observed USB and LSB offsets. Occasionally an NDB will transmit something other than its callsign, such as “TST” which means ‘Testing’, sometimes you may hear the ID but with an extra character, usually an ‘E’, indicating the beacon is running on emergency power - due to a transmitter fault, or possibly a loss in mains voltage and running on emergency backup power (batteries).

Although these beacons are only designed to have an operational radius of just a few tens of nautical miles, they can often be received MUCH further afield. It is not uncommon for UK based listeners to hear NDB’s located in North America, which is about 3000 miles away — slightly outside the ND’s designed operational range!

NDBs use physically short antennas that are usually top loaded. a full size quarter wave at 300kHz is a rather impractical 250m tall. There is an advantage to using a shortened vertical antenna, which is that the radiation angle is quite high and it will have a limited coverage range. Usually, the antenna has a capacity hat, which looks like a horizontal ‘X’ on top of the vertical radiating element. There may, or may not be wires attached to the capacity hat. The antennas on NDBs are around 5-10m tall and ground mounted adjacent to the transmitter housing. 

There are many excellent sites devoted to NDB’s, These sites will give you a wealth of information about these beacons and reception techniques. Because of the transmission mode that most NDB’s use, there are tricks to ensuring you have the best chance of hearing and identifying the beacons. The two sites in the links give a good overview of what NDBs do and how they do it: https://www.cfinotebook.net/notebook/avionics-and-instruments/non-directional-radio-beacon and https://en.wikipedia.org/wiki/Non-directional_beacon. Both are well worth a visit. Below are some images of NDBs showing antennas, transmitters, etc. Please note, these are not my images but credit to the origin is given for each one.

NDB: ‘NKR’ Leimen-
Ochsenbach, Germany (Wikipedia)

NDB antenna Nkr1

NDB: WOD (Woodley, England)
 (http://www.trevord.com/navaids/wod.htm)

NDB WOD

NDB: JW (Jersey, Channel Islands) 329kHz
(wikipedia.org)

NDB JW

These NDB all have differing antennas, which would have been chosen and engineered to suit the exact location and area of coverage required. It is the thrill of hearing these beacons at distances that are many, many times further away from their designed coverage that makes us pursue this crazy hobby!

GROUNDING AND RADIALS

Now, as well as the radiating element of the NDB, there is another, unseen, part of the NDB antenna system that plays a vital role in determining how well the NDB antenna will perform. This is the underground radial system. Any vertical ‘monopole’ antenna must have a ground, or some other system to replace the ‘missing part’ of the antenna. A vertical monopole, like the types in the above images is basically half of a shortened, loaded vertical dipole. For a dipole to work, there has to be two identical halves, separated at the middle for the feeder to attach. In the case of the vertical mono-pole (that is, half of a di-pole), the identical other half of the dipole is missing. In order to duplicate the vertical half of the antenna, we use a ground/earthing system. In its most basic form this can be as simple as a quarter wave of wire on the ground at 90 degrees to the vertical element. It will work, but it will not be efficient. In order to make the antenna as efficient as possible (thereby requiring less power to reach its intended target, we need to employ a better ground system. You could begin with a 2-3m spike driven into the ground, but you will need something much better at these low frequencies. Radials, quarter wavelength heavy duty wire spreading out from the ground spike like the spokes of a bicycle wheel. How many radials? A lot! 16, 32, 64, 128 - after 128 gains will be minimal compared to the extra effort and cost involved in laying another large amount. At the end of each radial, they should all be joined to form the ‘rim’ of the bicycle wheel. Additional ground/earth rods at points around the rim may be beneficial. Another approach often used by hams is to spread ‘chicken wire’ on the ground and connect that to earth/ground rods. It’s cheaper and much less effort required but the results will likely be down on a decent radial system. For us hams, we are unlikely to be able to lay 100 quarter wave radials for 160, 80 or even 40m. The one thing to remember is that more short radials will work much better than a few longer ones. If the radials are at ground level (or just underground) length is not really an issue as they will not be tuned. Raised radials do require tuning but you need fewer of them. To have the best chance of success on the low bands, get as much metal on therground as possible. String radials wherever you can. They can be straight, bent, go round things and even up above ground for a few feet if necessary.

NDB radials k6nr

This is an ideal radial system. As you can see, they are, we will assume, a quarter wavelength long and spread at regular intervals around the complete 360. At the very centre are the radiating element, ground spike, radial plate, and, I would guess, some sort of matching network (usually a combination of inductance (coil) and capacitance (made with either a high voltage ceramic type or from a length of heavy duty coax trimmed to provide the correct capacitance) or a common mode choke to stop any common mode current from travelling down the feeder and into the receiver or transmitter (the current actually travels on the outside of the feeder shield using the principle known as  ‘skin effect’.
Radial system (credit: K6KR)

NDB radial diagram

G4UCJ NDB ALL TIME HEARD LIST

NDB's Heard in Daylight:

136

NDB's Heard in Darkness:

579

Total NDB's Heard:

715

 

 

 

 

 

QRG

ID

Active

Type

Heard D/N

LSB

USB

Sec

Format

QTH

S/P

ITU

Area

QRA

Pwr

Notes

263

QY

Y

NDB

N

262.595

263.407

10.3

DAID

Sydney

NS

CAN

NAm

GN06af

500

NDB #701

265

KAV

Y

NDB

N

263.962

266.039

8.5

ID+5" gap

Pula / Kavran

 

HRV

EEu

JN74av

50

 

277

CHT

Y

NDB

D

276.592

277.408

5.6

 

Chiltern

 

ENG

WEu

IO91ro

25

 

279

SI

Y

NDB

N

278.598

279.4

5.62

 

Simiutaq (Kitaa)

 

GRL

NAm

GP60qq

 

Greenland

282

LA

N

NDB

D

281.603

282.398

10

ID+8" gap

Lyneham

 

ENG

 

IO81xm

25

INACTIVE

284

GNA

Y

NDB

N

282.964

285.037

8.4

ID+5" gap

Gorna

 

BUL

EEu

KN23td

 

 

288.5

AVD

Y

NDB

N

 

288.519

25.4

ID+20" tone

Avord

 

FRA

WEu

JN17jc

50

 

289

RI

Y

NDB

N

287.971

290.03

 

ID+6" gap

Rijeka / Krk

 

HRV

EEu

JN75hd

 

 

290

GRZ

Y

NDB

N

288.976

290.01

9

ID+3" gap

Graz

 

AUT

WEu

JN76rw

80

 

290

ONL

Y

NDB

N

289.6

290.4

10.1

ID+6" gap

Liege / Bierset

 

BEL

WEu

JO20sq

15

 

290

TR

Y

NDB

N

289.603

290.4

10

ID+8" gap

Tirana / Rinas

 

ALB

EEu

JN91uk

 

 

292

NKR

Y

NDB

N

290.98

293.024

8

ID+5" gap

Neckar

 

DEU

WEu

JN49ii

25

 

292.5

BA

N

NDB

N

292.5

292.5

35

IDx2 + 25" tone

Estaca de Bares

 

ESP

 

IN63ds

 

INACTIVE

293

OB

Y

NDB

D

292.608

293.398

10.1

ID+7" gap

Brussels National

 

BEL

WEu

JO20hw

 

 

296

MG

Y

NDB

N

294.979

297.018

10

ID+7" gap

Ljubljana

 

SVN

EEu

JN76ge

 

 

296.5

FI

N

NDB

N

296.5

296.5

34.8

IDx2 +25" tone

Cabo Finistere

 

ESP

 

IN52iv

 

INACTIVE

299

BO

Y

NDB

N

298.601

299.405

10

ID+7" gap

St Etienne / Boutheon

 

FRA

WEu

JN25dm

 

NDB #702

299.5

KN

Y

NDB

N

299.093

299.893

10

ID+8" gap

Svolvaer / Helle / Skrova

 

NOR

NEu

JP78hd

 

 

300

NE

Y

NDB

N

299.562

300.443

3.5

 

Pruszcz Gdanski

 

POL

EEu

JO94if

 

NDB #653  EX F-300

300

PV

Y

NDB

N

299.025

301.02

9.9

ID+7" tone

Novi Sad / Cenej / Petrovaradin

 

SRB

EEu

JN95rd

 

 

300

SC

Y

NDB

N

299.604

300.408

5

 

Linkoping / Malmen And Saab

 

SWE

NEu

JO78sk

 

 

301

RTN

N

NDB

N

 

301.002

18.8

ID+15" tone

Romorantin / Pruniers

 

FRA

 

JN07uh

 

INACTIVE

302

ROM

Y

NDB

N

301.599

302.407

10.3

ID+7" gap

Rodez / Marcillac

 

FRA

WEu

JN14hi

 

 

303

KPG

Y

NDB

N

302.599

303.4

8

ID+4" gap

Sogndal / Haukasen / Kaupanger

NOR

NEu

JP31oe

 

 

303

RTT

Y

NDB

N

301.98

304.02

 

ID+8" gap

Innsbruck / Rattenberg

 

AUT

WEu

JN57xk

 

 

306.5

AV

Y

NDB

N

 

306.506

23

ID+18" tone

Avord

 

FRA

WEu

JN16lv

 

 

307

DIK

Y

NDB

N

306.602

307.402

8

ID+5" gap

Diekirch

 

LUX

WEu

JN39bu

 

 

308

MOJ

Y

NDB

N

306.995

309.031

9.9

ID+5" tone

Mojkovac

 

MNE

EEu

JN92sw

40

 

309

DO

Y

NDB

N

308.599

309.401

10

ID+8" gap

Dole / Tavaux

 

FRA

WEu

JN26px

 

 

309

LG

Y

NDB

N

308.6

309.4

5.1

 

Satenas / Tune

 

SWE

NEu

JO68ik

 

NDB #693

309

MW

Y

NDB

N

307.976

310.02

9.9

 

Berlin / Schonefeld

 

DEU

WEu

JO62qi

 

 

311

CEL

Y

NDB

N

309.98

312.02

10.2

 

Celle

 

DEU

WEu

JO52bo

25

 

311

LMA

Y

NDB

N

310.6

311.4

10

ID+7" gap

Lima / Bruggen

 

DEU

WEu

JO31ei

25

 

311.5

ML

Y

NDB

N

310.486

312.51

4.7

ID+2" gap

Cewice

 

POL

EEu

JO84vj

 

 

312

BOZ

Y

NDB

N

310.966

313.038

8.1

ID+3" gap

Bozhurishte

 

BUL

EEu

KN12os

 

 

314

OZ

Y

NDB

D

313.611

314.398

10

DAID

Brussels National

 

BEL

WEu

JO20ft

 

 

315

HOL

Y

NDB

D

 

315.033

19.8

ID+14" tone

Villacoublay / Velizy

 

FRA

WEu

JN08vr

25

 

315

NSO

Y

NDB

D

314.6

315.4

10.2

 

Ensco 121 OMI

 

XOE

Eu (Int Waters)

JO04fo

 

 

315

STK

N

NDB

N

314.605

315.4

 

 

Stadskanaal

 

HOL

 

JO32kx

15

INACTIVE

316

CAL

Y

NDB

N

314.983

317.021

10.3

ID+6" gap

Cagliari / Elmas

 

SAR

SEu

JM49mf

 

NDB #655

316

EPM

Y

NDB

D

315.595

316.391

5.6

 

Epsom for Heathrow

 

ENG

WEu

IO91th

25

 

316

OE

Y

NDB

N

315.601

316.4

8.5

ID+7" gap

Dublin

 

IRL

WEu

IO63sk

 

Also heard as OE e

317

OZ

Y

NDB

N

316.592

317.406

8.4

ID+5" gap

Kardla

 

EST

EEu

KO18kw

 

NDB #652

317

VS

Y

NDB

D

316.599

317.409

10.4

ID+8" gap

Valenciennes / Denain

 

FRA

WEu

JO10qi

 

 

317.5

TRP

Y

NDB

N

316.482

318.521

7.5

ID+3" gap

Marsala (TP)

 

SCY

SEu

JM67fv

25

NDB #654  Province : Trapani

318

BE

Y

NDB

N

 

318.401

10

 

Bordeaux / Merignac

 

FRA

WEu

IN94tu

25

 

318

BPL

Y

NDB

D

317.624

318.425

7.6

ID+3.5" gap

Blackpool

 

ENG

WEu

IO83ls

 

WAS ON 420.0

318

GEN

Y

NDB

N

316.979

319.019

10

ID+7" gap

Genova (GE)

 

ITA

 

JN44mk

 

NDB #703 Province : Genova - HEARD AS NA/EA/ER

318

LE

Y

NDB

N

316.975

319.006

 

ID+8\" gap

Luxembourg-Est

 

LUX

WEu

JN39dp

 

 

319

ECV

Y

NDB

N

317.979

320.024

5.8

ID+3" gap

Colmenar Viejo

 

ESP

SEu

IN80cq

50

 

319

HJ

Y

NDB

N

319.018

320.026

6.9

 

Akureyri / Hjalteyri

 

ISL

NEu

IP05vu

 

NDB #694

319

VAR

Y

NDB

D

318.601

319.401

8

ID+4" gap

Stavanger / Sola / Varhaug

 

NOR

NEu

JO28tp

25

 

320

DO

Y

NDB

N

318.977

321.025

8

 

Djupivogur

 

ISL

NEu

IP24up

 

 

320

HA

Y

NDB

N

318.98

321.022

6.6

 

Hannover / East

 

DEU

WEu

JO42vl

25

 

320

TY

Y

NDB

D

 

320.026

 

ID+14" tone

Troyes / Barberey

 

FRA

WEu

JN28aj

 

 

320

VE

Y

NDB

N

319.599

320.4

10

ID+9" gap

Valence / Chabeuil

 

FRA

WEu

JN24lu

15

NDB #656

321

ABT

N

NDB

N

320.025

322.079

 

ID+4" gap

Albacete

 

ESP

 

IM98aw

50

INACTIVE

321

ABY

Y

NDB

D

320.595

321.405

10.3

ID+6" gap

Albert / Bray

 

FRA

WEu

JN19jx

 

 

321

TL

Y

NDB

N

320.6

321.4

10.2

ID+8" gap

Tarbes / Ossun / Lourdes

 

FRA

WEu

JN03ag

100

 

322

KOR

N

NDB

N

321.596

322.407

8.4

 

Helsinki / Malmi / Korso

 

FIN

 

KP20mi

 

INACTIVE

322

LCY

Y

NDB

D

321.599

322.422

6.5

 

London / City

 

ENG

WEu

JO01am

 

 

322

ORS

Y

NDB

N

 

322.002

30

ID+25" tone

Orleans / St Denis De L'Hotel

 

FRA

WEu

JN17cw

 

 

322

OU

Y

NDB

N

321.598

322.401

4.8

ID+2" gap

Stockholm / Bromma

 

SWE

NEu

JO99ah

 

 

322

RL

Y

NDB

N

321.6

322.4

 

 

La Rochelle / Ile De Re

 

FRA

WEu

IN96ke

 

 

322

TLN

Y

NDB

N

321.986

 

19

ID+15" tone

Hyeres / Le Palyvestre

 

FRA

WEu

JN33ba

50

NDB #657

323

GT

Y

NDB

N

321.977

324.022

5.4

ID+4" gap

Hamburg / North

 

DEU

WEu

JO43xr

25

 

323

ONC

Y

NDB

D

322.597

323.398

10.1

ID+6" gap

Charleroi / Gosselies

 

BEL

WEu

JO20gl

25

 

323

SBL

Y

NDB

D

322.625

323.417

7.6

 

Sherburn-In-Elmet

 

ENG

WEu

IO93js

 

 

323

WPL

Y

NDB

D

322.588

323.42

6.7

 

Welshpool

 

WLS

WEu

IO82kp

 

 

324

AS

Y

NDB

N

323.59

324.409

 

 

Kemi / Tornio

 

FIN

NEu

KP25eq

 

 

324

ON

Y

NDB

N

323.601

324.403

4

 

Norrkoping / Saab

 

SWE

NEu

JO88eo

 

 

325

AST

Y

NDB

N

323.992

326.014

 

ID+5" gap

Asturias

 

ESP

SEu

IN63xn

 

 

325

JOE

Y

NDB

N

324.596

325.401

8

ID+4" gap

Joensuu

 

FIN

NEu

KP42rq

 

 

325

OF

N

NDB

D

324.602

325.401

8.3

 

Filton

 

ENG

 

IO81qm

 

INACTIVE

325

PG

Y

NDB

N

324.599

325.4

5.1

ID+2" gap

Trollhattan / Vanersborg

 

SWE

NEu

JO68fg

 

 

325

RCA

Y

NDB

N

323.984

326.025

 

ID+6" gap

Reggio di Calabria (RC)

 

ITA

WEu

JM78ta

110

Province : Reggio di Calabria

325

VG

Y

NDB

N

323.972

325

8.5

ID+5.6" gap

Zagreb / Pleso / Velika Gorica

 

HRV

EEu

JN85ar

 

 

326

KG

Y

NDB

N

325.603

326.396

4.3

ID+1" gap

Kramfors / Bjartra

 

SWE

NEu

JP83uc

 

NDB #695

326

LLS

Y

NDB

N

325.6

326.396

6.7

 

Lelystad

 

HOL

WEu

JO22sl

 

 

326

LM

Y

NDB

D

325.6

326.408

10.1

 

Le Mans / Arnage

 

FRA

WEu

JN07cv

50

 

326

OG

Y

NDB

N

325.6

326.395

4.5

ID+1" gap

Gavle / Sandviken

 

SWE

NEu

JP80lp

 

 

326

PU

Y

NDB

N

325.978

 

 

 

St Petersburg / Pulkovo

 

RUS

RUS

KO59ct

 

NDB #649

326

YW

Y

NDB

N

325.602

326.405

5

 

Tyra West Platform

 

XOE

Eu (Int Waters)

JO25fk

 

 

327

LNZ

Y

NDB

N

325.978

328.017

10

ID+6" gap

Linz / Horsching

 

AUT

WEu

JN78df

 

 

327

MVC

Y

NDB

D

327

327.012

20.7

DAID

Merville / Calonne

 

FRA

WEu

JO10hn

 

 

327

POR

Y

NDB

N

325.979

328.017

8.4

ID+4" gap

Porto

 

POR

SEu

IN51pi

 

 

327

TNL

Y

NDB

D

326.597

327.397

10

 

Tatenhill

 

ENG

WEu

IO92ct

 

 

328

BLK

Y

NDB

D

327.63

328.415

8.1

 

Blackbushe

 

ENG

WEu

IO91nh

 

 

328

HIG

Y

NDB

N

326.951

329.059

 

ID+20\" gap

San Sebastian

 

ESP

SEu

IN93cj

200

 

328

IVR

Y

NDB

N

327.598

328.4

5.1

 

Inverness

 

SCT

WEu

IO77xm

 

NDB #658

328

VJ

Y

NDB

N

327.601

328.404

9.7

ID+6" gap

Stauning

 

DNK

WEu

JO45fx

 

NDB #659

328.5

EGT

Y

NDB

N

328.091

328.907

4.6

 

Londonderry / Eglinton

 

NIR

WEu

IO65kb

 

 

329

IB

N

NDB

N

328.596

329.411

8

 

Tallinn

 

EST

 

KO29hj

 

INACTIVE

329

JW

Y

NDB

D

328.601

329.407

10.2

ID+7" gap

Jersey

 

JSY

WEu

IN89ve

 

 

329

VX

Y

NDB

N

328.606

329.403

4.5

 

Vaxjo / Kronoberg

 

SWE

NEu

JO76iu

 

NDB #650

330

HN

Y

NDB

N

329.013

331.02

8.1

 

Hornafjordur

 

ISL

NEu

IP24jg

 

NDB #660

330

LEN

Y

NDB

N

329.125

331.193

5.6

ID+8" gap

Leon / Virgen Del Camino

 

ESP

SEu

IN72eo

50

 

330

LNA

Y

NDB

N

329.597

330.403

 

 

Lena

 

SWE

NEu

JO89qm

 

 

330

MB

Y

NDB

N

329.6

330.406

10.1

ID+8" gap

Montbeliard / Courcelles

 

FRA

WEu

JN37lm

 

NDB #696

330

SKS

Y

NDB

N

329.588

330.406

5

 

Karlstad

 

SWE

NEu

JO69pj

 

NDB #651

330

SO

Y

NDB

N

329.596

330.403

8.1

 

Eelde / Groningen

 

HOL

WEu

JO33jf

15

 

330

ZRA

Y

NDB

N

329.595

330.41

6

ID+2" gap

Zadar / Kakman

 

HRV

EEu

JN73rx

 

NDB #570 (221220 @ 1719)

331

GLW

Y

NDB

N

330.602

331.397

6.3

 

Glasgow

 

SCT

WEu

IO75su

 

 

331

GST

Y

NDB

D

330.605

331.382

5.3

 

Gloucester

 

ENG

WEu

IO81vv

12

Power confirmed by QSL

331

TE

N

NDB

N

330.601

331.4

3.5

 

Thisted

 

DNK

 

JO47kb

 

INACTIVE

331

TUR

Y

NDB

N

330.6

331.408

10.2

ID+7" gap

Tours / Val De Loire

 

FRA

WEu

JN07jn

15

NDB #661

331.5

TLF

N

NDB

N

 

331.504

28

ID+23" tone

Toulouse / Francazal

 

FRA

 

JN03oo

 

INACTIVE

332

FAR

Y

NDB

N

330.976

333.026

7.4

ID+4" gap

Faro

 

POR

SEu

IM67aa

 

 

332

G

Y

NDB

N

332.594

333.405

8.4

ID+ 6" gap

Kemi - Tomlo / Martalla

 

FIN

NEu

kp25gs

 

NDB #647

332

LL

Y

NDB

D

331.6

332.404

10.2

ID+8" gap

Lille / Lesquin

 

FRA

WEu

JO10on

 

 

332

NV

Y

NDB

N

331.572

332.403

5.9

 

Amsterdam / Schiphol

 

HOL

WEu

JO22jd

15

NDB #646

332

SHM

Y

NDB

D

331.594

332.388

7.9

 

Shoreham

 

ENG

WEu

IO90ut

 

 

332

TLF

Y

NDB

N

331.6

332.4

10.2

 

Toulouse / Francazal

 

FRA

WEu

JN03oo

 

WAS ON 331.5

332.5

CAM

Y

NDB

D

332.103

332.904

9.9

ID+6" gap

Cambridge

 

ENG

WEu

JO02cf

 

 

333

G

Y

NDB

N

332.594

333.408

 

 

Kemi-Tornio / Marttala

 

FIN

NEu

KP25gs

 

 

333

LE

Y

NDB

N

332.597

333.401

 

 

Vasteraas / Hasslo

 

SWE

NEu

JO89ip

 

NDB #697

333

SHO

Y

NDB

D

332.577

333.397

 

ID+5\" gap

Shell / Esso Sean A Platform

 

XOE

Eu (Int Waters)

JO13ke

 

 

333

SMF

N

NDB

D

332.599

333.401

5.5

 

Sheffield City Airport

 

ENG

 

IO93hj

 

INACTIVE

333.5

VOG

Y

NDB

N

332.482

334.522

10

ID+5" gap

Voghera (PV)

 

ITA

WEu

JN44lx

 

Province : Pavia

334

BGW

N

NDB

N

333.6

334.4

10.2

 

Paris / Le Bourget

 

FRA

 

JN18dw

25

INACTIVE

334

DX

Y

NDB

N

333.602

334.406

10.2

 

Dax / Seyresse

 

FRA

WEu

IN93lq

 

NDB #662

334

GMN

Y

NDB

N

333.583

334.421

5

 

Gormanston

 

IRL

WEu

IO63vp

 

 

334

MR

Y

NDB

N

333.612

334.417

4.3

ID+2"gap

Maribor

 

SVN

EEu

JN76vi

49

 

334

OPA

N

NDB

N

333.639

334.39

7.65

 

Oslo / Gardermoen / Oppaker

 

NOR

 

JP50se

 

INACTIVE

334

POY

Y

NDB

N

333.6

334.405

10.4

 

Paris / Orly

 

FRA

WEu

JN18er

 

 

334

YN

Y

NDB

N

 

334.004

 

DAID

La Roche Sur Yon

 

FRA

WEu

IN96iq

15

 

335

TON

Y

NDB

N

333.993

336.012

7.9

ID+3" gap

Torralba de Aragon

 

ESP

SEu

IN91rw

300

 

335

WCO

Y

NDB

D

334.597

335.405

6.8

 

Westcott

 

ENG

WEu

IO91mu

 

 

336

AQ

N

NDB

N

335.597

336.393

7.27

 

Aberdeen

 

SCT

 

IO87td

 

INACTIVE

336

BTA

N

NDB

N

335.601

336.402

8

 

Bergen / Flesland / Bratta

 

NOR

 

JP20pb

 

INACTIVE

336

LT

Y

NDB

N

335.594

336.401

 

 

Halmstad

 

SWE

NEu

JO66kx

 

 

337

EX

Y

NDB

D

336.608

337.416

9.6

 

Exeter

 

ENG

WEu

IO80is

 

 

337

KAJ

Y

NDB

N

336.594

337.41

 

 

Kajaani / Koutaniemi

 

FIN

NEu

KP34sg

 

 

337

LHR

Y

NDB

N

335.978

338.015

8

ID+4" gap

Lahr / Schwarzwald

 

DEU

WEu

JN38vi

 

 

337

MY

Y

NDB

N

336.565

337.368

11.9

ID+6" gap

Myggenaes

 

FRO

NEu

IP62ec

 

 

337

OZ

N

NDB

N

336.596

337.395

 

 

Soderhamn / Skallen

 

SWE

 

JP81of

 

INACTIVE

337

WTN

Y

NDB

D

336.592

337.391

8.4

 

Warton

 

ENG

WEu

IO83ns

 

 

338

FNY

Y

NDB

D

337.586

338.403

6.5

 

Robin Hood / Doncaster / Finningley

ENG

WEu

IO93ll

 

 

338

GE

N

NDB

D

337.62

338.42

7.6

 

London / Gatwick

 

ENG

 

IO91xd

 

INACTIVE

338

GU

Y

NDB

N

337.6

338.4

10.1

ID

Brest / Guipavas

 

FRA

WEu

IN78ul

25

 

338

MNW

Y

NDB

N

336.98

339.022

12.6

 

Munchen

 

DEU

WEu

JN58wi

25

NDB #648

338

OA

Y

NDB

N

337.597

338.398

 

 

Jonkoping

 

SWE

NEu

JO77bt

 

 

338

PST

Y

NDB

N

336.975

339.016

7

ID+4" gap

Porto Santo / Ilheu De Baixo

 

MDR

WAf

IM13tb

2000

 

339

BIA

Y

NDB

D

338.575

339.403

9.2

 

Bournemouth

 

ENG

WEu

IO90bs

40

 

339

GI

Y

NDB

N

338.999

339.002

11

 

Amiens / Glisy

 

FRA

WEu

JN19fu

 

 

339

HOS

Y

NDB

N

337.981

340.022

6.2

ID+2" gap

Hamburg

 

DEU

WEu

JO53bq

 

 

339

LS

Y

NDB

N

338.614

339.385

 

 

Forde / Bringeland / Langeneset

NOR

NEu

JP21wj

 

 

339

V

Y

NDB

N

338.598

339.403

4.2

ID+3" gap

Kokkola / Kruunupyy

 

FIN

NEu

KP13nq

 

 

340

BLK

Y

NDB

N

339.024

340.979

10.3

ID+5" tone

Banja Luka

 

BIH

EEu

JN85pc

40

 

340

GJ

Y

NDB

N

338.978

341.017

6.5

 

Gjogur

 

ISL

NEu

HP95ix

 

NDB #663

340

HAW

Y

NDB

D

339.6

340.399

10.2

 

Hawarden

 

WLS

WEu

IO83me

 

 

340

KAI

Y

NDB

N

339.594

340.409

 

 

Utti / Kaipi

 

FIN

NEu

KP30nv

 

 

340

LSH

Y

NDB

D

339.591

340.384

14

 

Lashenden / Headcorn

 

ENG

WEu

JO01hd

40

 

340

PK

Y

NDB

N

 

341.998

 

 

UNID

 

XUU

(UNID)

 

 

NDB #640  Poss inverted keying??

340

PND

Y

NDB

N

338.97

341.02

11.3

ID+12" gap

Valencia / Pinedo

 

ESP

SEu

IM99tk

300

NDB #698

340

ZIG

Y

NDB

N

338.981

341.018

10

ID+6" gap

Leipzig

 

DEU

WEu

JO61dk

 

 

341

AMB

Y

NDB

N

 

341.012

18

ID+14" tone

Amboise

 

FRA

WEu

JN07mk

50

 

341

BZ

Y

NDB

N

340.6

341.404

10.1

ID+7" gap

Biarritz / Bayonne / Anglet

 

FRA

WEu

IN93hl

25

 

341

EDN

Y

NDB

N

340.6

341.391

7

 

Edinburgh

 

SCT

WEu

IO85ix

 

 

341

LO

Y

NDB

N

340.601

341.402

12.3

ID+7" gap

Billund

 

DNK

WEu

JO45pr

 

 

341

POR

N

NDB

N

340.593

341.411

8.4

ID+4" gap

Pori

 

FIN

 

KP01um

 

INACTIVE

342

LL

Y

NDB

N

341.605

342.404

9.9

ID+7" gap

Leirin / Fagernes

 

NOR

NEu

JP41pa

 

 

342

PK

Y

NDB

N

341.6

343.012

8.1

ID+3" gap

St.Petersburg

 

RUS

RUS

KO59bt

 

NDB #642 400/1020 Hz OFFSET

342

VA

Y

NDB

N

341.599

342.406

10.4

ID+7" gap

Vannes / Meucon

 

FRA

WEu

IN87qs

 

 

342.5

NWI

Y

NDB

D

342.08

342.897

8.1

 

Norwich

 

ENG

WEu

JO02pq

5

 

343

TEST

Y

NDB

D

 

 

 

 

UNID - A-343 ???

 

XUE

Eu (UNID)

 

 

Probably A-343 : Budapest / Ferihegy (NOTAM)

343

YVL

Y

NDB

D

342.611

343.41

7.9

 

Yeovil / Westland

 

ENG

WEu

IO80qw

 

 

344

HEK

N

NDB

N

343.594

344.41

 

ID+6" gap

Heka For Helsinki / Vantaa

 

FIN

 

KP20rg

 

INACTIVE

344

HN

Y

NDB

N

342.956

345.035

8.2

ID+2" gap + 4" tone

Hohn

 

DEU

WEu

JO44uh

25

NDB #641

344

LA

Y

NDB

N

 

345.02

9.5

ID+3.5 gap

Saudarkrokur / Langholt

 

ISL

NEu

IP05gn

 

NDB #666

344

WCK

Y

NDB

N

343.595

344.4

7

 

Wick

 

SCT

WEu

IO88lk

25

 

345

BN

Y

NDB

N

344.63

345.374

9

ID+6" gap

Kristiansand / Kjevik / Birkeland

 

NOR

NEu

JO48ch

 

 

345

CS

Y

NDB

N

344.598

345.408

10

ID+8" gap

Carcassonne / Salvaza

 

FRA

WEu

JN13cf

 

 

345

CSD

Y

NDB

N

344.602

345.4

8

ID+4" gap

Daouarat

 

MRC

NAf

IM52xw

 

NDB #665

345

IGL

Y

NDB

N

343.969

346.028

16.7

ID+24" tone

Ingolstadt

 

DEU

WEu

JN58tr

25

NDB #643

345

LN

Y

NDB

D

344.6

345.4

10

 

Lannion / Servel

 

FRA

WEu

IN88ir

25

 

345

LUT

Y

NDB

D

344.597

345.396

7.6

 

London / Luton

 

ENG

WEu

IO91vv

 

 

345

STM

Y

NDB

N

344.6

345.403

8

 

Strommen / Mo I Rana

 

NOR

NEu

JP66vg

 

 

345

TZO

Y

NDB

N

343.97

346.03

10

ID+6" gap

Trezzo sull'Adda (MI)

 

ITA

WEu

JN45sn

 

Province : Milano

345

VTA

Y

NDB

N

343.977

346.019

10

 

Vitoria

 

ESP

SEu

IN82pw

 

NDB #664

345.5

CF

Y

NDB

N

344.47

346.576

7.5

ID+4" gap

Caslav / Chotusice / Centograf

 

CZE

EEu

JN79rv

 

ILA/ILE = Negative Keying

346

GS

Y

NDB

N

345.595

346.393

 

ID+1" gap

Gavle / Sandviken

 

SWE

NEu

JP80ln

 

 

346

LHO

Y

NDB

D

345.597

346.405

10.3

 

Le Havre / Octeville

 

FRA

WEu

JN09co

 

 

346

OC

Y

NDB

N

 

347.025

21

ID+18" tone

Cognac / Chateaubernard

 

FRA

WEu

IN95wr

 

NDB #705

346

WLU

Y

NDB

N

344.96

347.02

10

ID+5" gap

Luxembourg

 

LUX

WEu

JN39an

15

 

347

CVT

Y

NDB

N

346.6

347.4

10

ID+7" gap

Chalons / Vatry

 

FRA

WEu

JN28ds

 

 

347

MSK

N

NDB

N

346.602

347.402

10.1

 

Morskogen

 

NOR

 

JP50pk

 

INACTIVE

347

NQY

Y

NDB

N

346.6

347.4

8.2

 

Newquay

 

ENG

WEu

IO70mk

50

 

347.5

TD

Y

NDB

D

347.087

347.908

10.5

 

Teeside

 

ENG

WEu

IO94in

 

 

348

ATF

Y

NDB

N

347.6

348.4

7.7

 

Aberdeen / Dyce

 

SCT

WEu

IO87wb

25

 

348

CL

Y

NDB

N

347.6

348.4

 

 

Cahors / Lalbenque

 

FRA

WEu

JN04rj

 

 

348

FOS

Y

NDB

D

347.615

348.395

9.7

 

Fairoaks

 

ENG

WEu

IO91ri

 

 

348

HA

Y

NDB

N

346.98

349.054

6

 

Vopnafjordhur / Hofsa

 

ISL

NEu

IP25lp

 

NDB #667

348

SAD

Y

NDB

N

347.626

348.375

8.5

ID+5" gap

Leknes / Sandsund

 

NOR

NEu

JP68tc

 

NDB #644

348

TPL

Y

NDB

N

346.912

349.072

9.3

ID+6" tone

Topola

 

SRB

EEu

KN04id

 

 

348

VG

Y

NDB

N

347.609

348.432

4.32

 

Vagar

 

FRO

NEu

IP62jb

 

 

348

ZZA

Y

NDB

N

347.044

348.951

6.3

ID+3" gap

Zaragoza

 

ESP

SEu

IN91no

100

EUEF = Negative Keying

348.5

LG

N

NDB

N

347.483

349.523

 

 

Liege / Bierset

 

BEL

 

JO20rp

15

INACTIVE

349

JX

Y

NDB

N

348.604

349.404

 

 

Vaxjo / Kronoberg

 

SWE

NEu

JO76jx

 

NDB #645 (I originally IDed it as 'OX' (UNID) but it is JX)

349

KMB

N

NDB

D

348.594

349.403

4.9

 

Kemble

 

ENG

 

IO81xq

 

INACTIVE

349

OYE

N

NDB

N

348.615

349.416

10

ID+6" gap

Paris / Orly

 

FRA

 

JN18gs

25

INACTIVE

349

RS

Y

NDB

D

348.6

349.405

10.4

ID+8" gap

Rennes / St Jacques

 

FRA

WEu

IN98eb

 

 

349

TAR

Y

NDB

N

348.598

349.397

8

ID+5" gap

Orland / Tarva

 

NOR

NEu

JP43rt

 

 

349.5

LPL

Y

NDB

D

349.097

349.91

6.9

 

Liverpool

 

ENG

WEu

IO83pi

 

 

350

BLA

Y

NDB

N

348.98

351.02

10

ID+6" gap

Cerrione (BI)

 

ITA

WEu

JN45bl

 

Province : Biella

350

FU

Y

NDB

N

349.602

350.404

 

 

Hamburg West

 

DEU

WEu

JO43xo

25

 

350

LAA

Y

NDB

N

349.592

350.41

 

ID+5" gap

Oulu / Laanila

 

FIN

NEu

KP24ox

 

 

350

MUT

Y

NDB

N

349.994

 

20.7

ID+15" tone

Muret / Lherm

 

FRA

WEu

JN03ol

 

NDB #705

350

TST

Y

NDB

N

349.597

350.397

10

 

UNID

 

XUE

Eu (UNID)

 

 

NDB #668  MUT testing 400 Hz offsets ??

350.5

ROT

Y

NDB

D

350.1

350.9

8.1

ID+4.7" gap

Rotterdam

 

HOL

WEu

JO21gv

15

 

351

BSC

Y

NDB

N

350.596

351.404

10.3

ID+6" gap

Brive / Souillac

 

FRA

WEu

JN05ta

 

NDB# 571

351

DSA

Y

NDB

N

350.604

351.403

10.1

 

Dieppe / St Aubin

 

FRA

WEu

JN09mv

 

 

351

OSA

Y

NDB

N

350.602

351.407

10.8

 

Ouessant

 

FRA

WEu

IN78ll

 

 

351

OV

Y

NDB

D

350.603

351.403

5.1

ID+2" gap

Visby

 

SWE

NEu

JO97er

 

 

351

SBH

Y

NDB

N

350.609

351.4

6.2

 

Sumburgh Head

 

SHE

WEu

IO99iv

 

NDB #699

351.5

PLA

Y

NDB

N

350.481

352.521

10

ID+6" tone

Pula

 

HRV

EEu

JN64vv

2000

 

352

LAA

Y

NDB

N

350.977

353.018

10

 

Niederrheim

 

DEU

WEu

JO31co

45

 

352

NT

Y

NDB

D

351.575

352.391

10.5

ID+9" gap

Newcastle

 

ENG

WEu

IO95eb

90

 

352

WOD

Y

NDB

D

351.591

352.412

6.3

 

Woodley

 

ENG

WEu

IO91nk

 

 

352.5

DD

Y

NDB

D

352.1

352.9

10

ID+8" gap

Oostende

 

BEL

WEu

JO11ke

100

SENDING 'TEST' -/+ 400 Hz OFFSETS

353

KIL

Y

NDB

D

352.595

353.396

 

 

Kiel / Holtenau

 

DEU

WEu

JO54bi

25

 

353

OBA

Y

NDB

N

352.591

353.419

9

ID+4.6" gap

Oseberg A platform

 

XOE

Eu (Int Waters)

JP10jl

 

NDB #669

353

SB

Y

NDB

D

352.997

 

19

ID+17" tone

St. Brieuc / Armor

 

FRA

WEu

IN88on

 

 

353.5

EME

Y

NDB

D

353.098

353.899

4.6

 

East Midlands

 

ENG

WEu

IO92jt

25

 

354

MTZ

Y

NDB

N

353.596

354.407

10

 

Metz / Nancy-Lorraine

 

FRA

WEu

JN39cg

 

 

354

NG

Y

NDB

N

353.6

354.407

10.6

ID+8" gap

Nimes / Garons

 

FRA

WEu

JN23eu

25

NDB #671

354

PAD

Y

NDB

N

352.957

355.035

8.4

ID+4" gap

Paderborn / Lippstadt

 

DEU

WEu

JO41ho

25

 

354

PP

Y

NDB

N

352.94

355.034

7.5

ID+4" gap

Pamplona

 

ESP

SEu

IN92du

 

 

355

OBR

Y

NDB

N

353.975

356.028

8.1

ID+4" gap

Beograd / Obrenovac

 

SRB

EEu

KN04bp

50

NDB #706

355

ONW

Y

NDB

D

354.597

355.397

10.1

 

Antwerpen / Deurne

 

BEL

WEu

JO21ge

 

 

355

PIK

Y

NDB

N

354.598

355.406

6

 

Prestwick

 

SCT

WEu

IO75rm

 

 

355

RK

Y

NDB

N

353.979

356.021

5.4

ID+3" gap

Reykjavik

 

ISL

NEu

HP84xd

 

NDB #670

356

SGO

Y

NDB

N

354.894

357.129

14

ID+10" gap

Sagunto

 

ESP

SEu

IM99vq

300

NDB #707

356

WBA

Y

NDB

N

355.598

356.4

5.9

 

Wolwerhampton

 

ENG

WEu

IO82um

 

 

357

CAS

Y

NDB

N

355.98

358.018

10

ID+6.6" gap

Caselle Torinese (TO)

 

ITA

WEu

JN35tc

25

Province : Torino

357

DWI

Y

NDB

N

355.978

358.02

10

 

Dortmund / Wickede

 

DEU

WEu

JO31tm

 

SENDING 'TEST' FOR A WHILE

357

LP

Y

NDB

D

356.6

357.406

10.2

ID+8" gap

Cholet / Le Pontreau

 

FRA

WEu

IN97nd

 

 

357

RJ

Y

NDB

N

355.976

358.019

8.3

ID+5" gap

Tripoli / Mitiga

 

LBY

NAf

JM62qv

 

NDB #672

357

SEP

Y

NDB

D

356.592

357.407

 

 

Vaasa / Seppi

 

FIN

NEu

KP03ud

 

 

357

SKZ

Y

NDB

N

356.597

357.4

 

 

Leipzig / Halle

 

DEU

WEu

JO61dj

 

 

357

TST

N

NDB

N

356.605

357.4

10

ID+8" gap

St Angelo Airport / Enniskillen

 

NIR

WEu

IO64ej

 

INACTIVE

357.5

FAL

Y

NDB

N

356.48

358.521

10

ID+6" gap

Falconara Marittima (AN)

 

ITA

WEu

JN63qp

25

Province : Ancona

358

BRS

Y

NDB

N

357.605

358.404

10

ID+7" gap

Biscarosse / Parentis

 

FRA

WEu

IN94ki

 

NDB #700

358

GRK

Y

NDB

D

357.629

358.382

 

 

Trondheim / Vaernes / Grakallen

NOR

NEu

JP53dk

25

 

358

LT

Y

NDB

D

357.603

358.403

10.4

 

Le Touquet / Paris-Plage

 

FRA

WEu

JO00tm

 

 

358

MSE

Y

NDB

N

356.98

359.02

4.5

ID+2" gap

Munchen

 

DEU

WEu

JN58th

25

NDB# 572

358

O

Y

NDB

N

 

359.02

 

IDx2 + 13" gap

Stavropol / Shopakovskoye

 

RUS

RUS

LN15bc

 

 

358

RNN

Y

NDB

N

357.6

358.4

10.1

ID+7" gap

Roanne / Renaison

 

FRA

WEu

JN26ac

 

NDB #673

358

TUN

Y

NDB

N

356.979

359.02

10

ID+7" gap

Tulln for Schwechat

 

AUT

WEu

JN78xh

 

 

358

WC

Y

NDB

N

357.61

358.395

5

ID+2\" gap

Nam / FA1 Platform

 

XOE

Eu (Int Waters)

JO23dn

 

 

359

LK

N

NDB

N

358.589

359.389

4.5

 

Lidkoping / Ekgarden

 

SWE

 

JO68nk

 

INACTIVE

359

LOR

Y

NDB

D

 

359.02

19.5

ID+14" tone

Lorient / Lann Bihoue

 

FRA

WEu

IN87gs

100

 

359

RWY

Y

NDB

D

358.6

359.406

8.1

 

Isle Of Man / Ronaldsway

 

IOM

WEu

IO74qb

20

 

359.5

CDN

N

NDB

D

 

359.511

29

ID+25" tone

Chateaudun

 

FRA

 

JN08qb

25

INACTIVE

359.5

RVN

N

NDB

N

~359.100

359.9

 

 

Hamilton / Ravenspurn North Platform

XOE

 

JO04na

 

INACTIVE

360

BD

Y

NDB

N

358.982

361.017

 

IDx2 + 20" gap

Bogdanovo

 

RUS

RUS

KO87uc

 

NDB #636

360

O

Y

NDB

N

358.983

361.023

8

ID+6.7" gap

Oradea

 

ROU

EEu

KN07wb

 

 

360

PN

Y

NDB

N

 

360.401

10.4

DAID

Port-Menier / Ile Anticosti

QC

CAN

NAm

FN79tu

500

NDB #674

360

SR

Y

NDB

N

358.983

361.02

7.1

ID+5" gap

Saarbrucken / Ensheim

 

DEU

WEu

JN39of

25

 

360

ULV

Y

NDB

N

359.618

360.383

6.9

ID+2.2" gap

Bronnoysund / Ulvingen

 

NOR

NEu

JP65bp

 

 

360.5

MAK

Y

NDB

D

360.1

360.9

10

ID+7" gap

Mackel for Brussels Ntl

 

BEL

WEu

JO10rx

 

 

361

CFN

Y

NDB

N

360.594

361.412

65

IDx7 + 7" tone

Donegal / Carrickfin

 

IRL

WEu

IO55tb

50

 

361

GUY

N

NDB

D

360.601

361.411

6.5

ID+2" gap

Guernsey

 

GSY

 

IN89qk

 

INACTIVE

361

NB

Y

NDB

N

360.6

361.402

 

ID+8" gap

Bordeaux / Merignac

 

FRA

WEu

IN95rd

25

 

362

BVK

Y

NDB

N

361.601

362.401

10

ID+5.8" gap

Orsta-Volda / Hovden / Baatvik

 

NOR

NEu

JP22vf

 

NDB #675

362

CJN

N

NDB

N

360.98

363.02

 

 

Castejon

 

ESP