Here https://www.itu.int/mmsapp/coaststation/one/2740 is listed UFV on 500 kHz and UFZ on many HF maritime CW frequencies, is this still the case of being active?

Also some years ago found listing of some Chinese stations (XSV?) on 500 kHz.

And just by random searches — it takes a long time there is no easy global search — I found XYR in Myanmar listed on 500kHz and XYR2 on 460 kHz both with 3kW: https://www.itu.int/mmsapp/coaststation/one/463

Wait… I found https://www.itu.int/mmsapp/coaststation/list if you don't select any country and just enter frequency 500 and unit k:

Took me a long time to copy/paste this all, hopefully we can verify if any of these may still be either active on air, or licensed and ready to be on air if required:

Ivory Coast (updated: Nov 2017)

AbidjanRadio TUA 487 kHz A1A (CW)

TUA23 3340 k A1A HF

TUA313 13764 k A1A HF

TUA57 7832 k A1A HF

Medical advice also on 500 kHz:

TUA 487 k A1A MF

TUA 500 k A1A MF

TUA 512 k A1A MF

TUA3 4343 k A1A HF

TUA4 8465 k A1A HF

TUA5 13060.5 k A1A HF

TUA9 16947.6 k A1A HF

Saudi Arabia (updated Nov 2016)

DammamRadio

HZG 26°51'35"N 049°43'15"E 500 k 500 A1A, A2A MF 5kW

HZG 26°51'35"N 049°43'15"E 4253.5 k 4188 A1A, A2A HF 5kW

HZG 26°51'35"N 049°43'15"E 6364.5 k 6276 A1A, A2A HF 5kW

JeddaRadio HZH Continuous watch on 500 kHz.

HZH 21°23'42"N 039°14'01"E 436 kHz A1A MF 5kW

HZH 21°23'42"N 039°14'01"E S 446 k A1A MF 5

HZH 21°23'42"N 039°14'01"E 448 k A1A MF 5

HZH 21°23'42"N 039°14'01"E 455.5 k A1A MF 5

HZH 21°23'42"N 039°14'01"E 500 kHz 500 A1A, A2A MF 5kW

RasTanuraRadio HZY (updated August 2014)

HZY 440 k A1A MF

HZY 500 k A1A MF

HZY 4308.5 k A1A HF

HZY 8480 k A1A HF

HZY 12811.3 k A1A HF

HZY 16960 k A1A HF

DESTACAMENTO NAVAL ORCADAS RADIO (updated April 2011) Argentina

LOK 60°43'00"S 044°46'00"W 500 k 500 A1A, A2A MF 0.05kW (50W)

Cameroon (April 2011)

Douala Radio

TJC6 8449 k A1A HF

TJC8 13069.5 k A1A HF

TJC 04°10'56"N 009°42'17"E 500 k 500 A1A MF 0.4kW

TJC 04°10'56"N 009°42'17"E 519 k A1A MF 0.4kW

TJC5 04°04'00"N 009°41'00"E 4480 k 4/3 4 A1A HF 1kW

TJC6 04°04'00"N 009°41'00"E 8449 k 8/3 4 A1A HF 1kW

TJC7 04°04'00"N 009°41'00"E 8718 k 8/3 4 A1A HF 1kW

TJC8 04°04'00"N 009°41'00"E 13069 k 12/3 4 A1A HF 1kW

TJC9 04°04'00"N 009°41'00"E 17237 k 16/3 4 A1A HF 1kW

Indonesia - updated June 2020 !!!

PKF = MakassarRadio

PKX = JakartaRadio

PKF 05°06'22"S 119°26'32"E 465 kHz A1A MF

PKX 06°07'06"S 106°51'48"E 470 kHz A1A MF 5kW

PKF 05°06'20"S 119°26'31"E 500 kHz 500 A1A MF 1

PKX 06°07'06"S 106°51'48"E 500 kHz 500 A1A MF 5kW

PKX 06°07'06"S 106°51'48"E 518 kHz 518 A1A MF 5kW

PKF 05°06'20"S 119°26'31"E 4295 k 4/3 A1A HF 1

PKX 06°07'06"S 106°51'48"E 8542 k A1A HF 5kW

PKF 05°06'20"S 119°26'31"E 4295 k 4/3 A1A HF 1kW

PKF 05°06'20"S 119°26'31"E 12682.5 k 12/3 9 A1A HF 1kW

PKX 06°07'06"S 106°51'48"E 12970.5 k A1A HF 5kW

PKX 16861.7 k A1A HF

PKX 06°07'06"S 106°51'48"E 17239.7 k A1A HF 5kW

PKX 06°07'06"S 106°51'48"E 22575.5 k A1A HF 5kW

PLC 11440 k A1A HF

Mobile, Alabama Radio (WLO) updated 2014 - but we know this is not the case any more?

WLO 30°22'34"N 088°12'20"W 434 k A1A MF 5kW

WLO 30°22'34"N 088°12'20"W 438 k A1A MF 5

WLO 30°22'34"N 088°12'20"W 500 k 500 A1A, A2A, A2B MF 40

WLO 4257.5 k A1A HF

WLO 6416 k A1A HF

WLO 6446 k A1A HF

WLO 8445.5 k A1A HF

WLO 8473.5 k A1A HF

WLO 8514 k A1A HF

WLO 8658 k A1A HF

WLO 12660 k A1A HF

WLO 12704.5 k A1A HF

WLO 12886.5 k A1A HF

WLO 13024.9 k A1A HF

WLO 16968.5 k A1A HF

WLO 16969 k A1A HF

WLO 17172.4 k A1A HF

WLO 22686.5 k A1A HF

Oman (updated April 2011)

MuscatRadio

A4M 458 k A1A MF

A4M 23°36'40"N 058°30'12"E 442.5 k A1A MF 1kW

A4M 23°36'40"N 058°30'12"E 500 k 500 A1A, A2A MF 1

A4M 23°36'40"N 058°30'12"E 521.5 k A1A MF 1

A4M 4233 k A1A HF

A4M 8445 k A1A HF

A4M 12675.5 k A1A HF

SMA (Samoa?) PagoPagoRadio updated 2011

KUQ 14°16'00"S 170°42'00"W 450 k A1A MF 1

KUQ 14°16'00"S 170°42'00"W 500 k 500 A1A MF 1kW

KUQ 6361 k A1A HF

KUQ 8585 k A1A HF

KUQ 14°16'00"S 170°42'00"W 12871.5 k A1A HF 1

Now we know this is still occasionally live:

PaloAltoRadio KFS (updated Apr 2011)

FS 476 k A1A MF

KFS 500 k A1A MF

KFS 4211.5 k F1B HF

KFS 4274 k A1A HF

KFS 6315.5 k F1B HF

KFS 6365.5 k A1A HF

KFS 8417.5 k F1B HF

KFS 8444.5 k A1A HF

KFS 8558.4 k A1A HF

KFS 12580.5 k F1B HF

KFS 12695.5 k A1A HF

KFS 12844.5 k A1A HF

KFS 16829.5 k F1B HF

KFS 17026 k A1A HF

KFS 17184.8 k A1A HF

KFS 22377.5 k F1B HF

KFS 22581.5 k A1A HF

KFS 37°26'44"N 122°06'44"W 436 k A1A MF 5

KFS 37°26'44"N 122°06'44"W A 476 k 476 A1A MF 30

KFS 1094 37°26'44"N 122°06'44"W 500 k 500 A1A, A2B MF 40

KFS 37°26'44"N 122°06'44"W 2037.5 k A1A, F1B MF 6.599

KFS 37°26'44"N 122°06'44"W 2061.5 k A1A, F1B MF 6.599

KFS 37°26'44"N 122°06'44"W 2566 k 2009 J3E MF 0.8

KFS 1094 37°26'44"N 122°06'44"W 4210.5 k 4172.5 F1B, J2D HF 5

KFS 1094 37°26'44"N 122°06'44"W 4211.5 k 4173.5 F1B, J2D HF 5

KFS 37°26'44"N 122°06'44"W 4228 k A1A, F1B HF 10

KFS 37°26'44"N 122°06'44"W 4274 k 4/3 4 7 A1A, F1B HF 10

KFS 37°26'44"N 122°06'44"W 4294 k 4294 J2D, J3C HF 2.5

KFS 37°26'44"N 122°06'44"W 4435 k C427 J3E HF 5

KFS 1094 37°26'44"N 122°06'44"W 6314.5 k 6263 F1B, J2D HF 5

KFS 1094 37°26'44"N 122°06'44"W 6315.5 k 6264 F1B, J2D HF 5

KFS 37°26'44"N 122°06'44"W 6348 k 6/3 4 7 A1A, F1B HF 10

KFS 37°26'44"N 122°06'44"W 6365.5 k 6/3 4 7 A1A, F1B HF 10

KFS 37°26'44"N 122°06'44"W 6435 k 6435 J2D, J3C HF 1

KFS 1094 37°26'44"N 122°06'44"W 8417.5 k 8377.5 F1B, J2D HF 10

KFS 1094 37°26'44"N 122°06'44"W 8430 k 8380 F1B, J2D HF 10

KFS 37°26'44"N 122°06'44"W 8444.5 k 8/3 4 7 A1A, F1B HF 10

KFS 37°26'44"N 122°06'44"W 8445 k A1A, F1B HF 10

KFS 37°26'44"N 122°06'44"W 8525 k 8525 J2D, J3C HF 2.5

KFS 37°26'44"N 122°06'44"W 8558.4 k 8/3 4 7 A1A, F1B HF 10

KFS 1094 37°26'44"N 122°06'44"W 12579.5 k 12477 F1B, J2D HF 15

KFS 1094 37°26'44"N 122°06'44"W 12580.5 k 12478 F1B, J2D HF 15

KFS 1094 37°26'44"N 122°06'44"W 12593 k 12490.5 F1B, J2D HF 15

KFS 1094 37°26'44"N 122°06'44"W 12602.5 k 12500 F1B, J2D HF 15

KFS 37°26'44"N 122°06'44"W 12695.5 k 12/3 4 7 A1A, F1B HF 15

KFS 37°26'44"N 122°06'44"W 12844.5 k 12/3 4 7 A1A, F1B HF 15

KFS 37°26'44"N 122°06'44"W 13068 k 13068 J2D, J3C HF 1

KFS 37°26'44"N 122°06'44"W 13176 k C1234 J3E HF 5

KFS 1094 37°26'44"N 122°06'44"W 16807 k 16683.5 F1B, J2D HF 15

KFS 1094 37°26'44"N 122°06'44"W 16808 k 16684.5 F1B, J2D HF 15

KFS 1094 37°26'44"N 122°06'44"W 16820 k 16697 F1B, J2D HF 15

KFS 1094 37°26'44"N 122°06'44"W 16829.5 k 16706.5 F1B, J2D HF 15

KFS 37°26'44"N 122°06'44"W 17026 k 16/3 4 7 A1A, F1B HF 15

KFS 37°26'44"N 122°06'44"W 17184.8 k 16/3 4 7 A1A, F1B HF 15

KFS 37°26'44"N 122°06'44"W 17210 k 17210 J2D, J3C HF 1

KFS 37°26'44"N 122°06'44"W 17377 k C1646 J3E HF 5

KFS 1094 37°26'44"N 122°06'44"W 19687.5 k 18877 F1B, J2D HF 15

KFS 37°26'44"N 122°06'44"W 19714 k 19714 J2D, J3C HF 1

KFS 37°26'44"N 122°06'44"W 19767 k C1805 J3E HF 5

KFS 1094 37°26'44"N 122°06'44"W 22376.5 k 22284.5 F1B, J2D HF 15

KFS 1094 37°26'44"N 122°06'44"W 22377.5 k 22285.5 F1B, J2D HF 15

KFS 1094 37°26'44"N 122°06'44"W 22390 k 22298 F1B, J2D HF 15

KFS 1094 37°26'44"N 122°06'44"W 22399.5 k 22307.5 F1B, J2D HF 15

KFS 37°26'44"N 122°06'44"W 22446 k 22446 J2D, J3C HF 1

KFS 37°26'44"N 122°06'44"W 22515 k A1A, F1B HF 15

KFS 37°26'44"N 122°06'44"W 22581.5 k 22/3 4 7 A1A, F1B HF 15

KFS 37°26'44"N 122°06'44"W 22825 k C2244 J3E HF 5

KFS 1094 37°26'44"N 122°06'44"W 26107.5 k 25179.5 F1B, J2D HF 15

KFS 37°26'44"N 122°06'44"W 26124 k 26124 J2D, J3C HF 1

KFS 37°26'44"N 122°06'44"W 26145 k C2501 J3E HF 5

Russia updated Jan 2013

RybachiyPrimRadio UFV/UFZ

UFV 436 k 476 F1B MF 1

UFV 436 k 476 A1A MF 1

UFV 500 k A1A MF 1

UFV 512 k A1A MF 1

UFZ k 4180 A1A HF

UFZ k 4184.5 A1A HF

UFZ k 6276.5 A1A HF

UFZ k 6279 A1A HF

UFZ k 8368.5 A1A HF

UFZ k 8369 A1A HF

UFZ k 12533.5 A1A HF

UFZ k 12552.5 A1A HF

UFZ k 16736.8 A1A HF

UFZ k 16738 A1A HF

UFZ k 22282 A1A HF

UFZ k 25171.5 A1A HF

and MANY more A1A frequencies on HF

see: https://www.itu.int/mmsapp/coaststation/one/2740

SanFrancisco/CaliforniaRadio KPH (updated APR 2011)

KPH 426 k A1A MF

KPH 4247 k A1A HF

KPH 6477.5 k A1A HF

KPH 8618 k A1A HF

KPH 8642 k A1A HF

KPH 12808.5 k A1A HF

KPH 13002 k A1A HF

KPH 17016.8 k A1A HF

KPH 17088.8 k A1A HF

KPH 22477.5 k A1A HF

KPH 22557 k A1A HF

12579 k HF 10

16806.5 k HF 10

22376 k HF 10

8416.5 k HF 10

16806.5 k HF 10

Note some LF frequencies listed here:!

KPH 37°54'30"N 122°43'40"W 126.15 k A1A, F1B LF 10

KPH 37°54'30"N 122°43'40"W 143 k 143 A1A LF 10

KPH 37°54'30"N 122°43'40"W 147.85 k A1A, F1B LF 10

KPH 37°54'30"N 122°43'40"W 426 k A1A, F1B MF 5

KPH 37°54'30"N 122°43'40"W 460 k A1A, F1B MF 20

KPH 1091 37°54'30"N 122°43'40"W 500 k 500 A1A, A2B MF 20

KPH 37°54'30"N 122°43'40"W 2045 k A1A, F1B MF 3

KPH 37°54'30"N 122°43'40"W 4216 k 4178.5 F1B HF 5

KPH 37°54'30"N 122°43'40"W 4216.5 k 4179 F1B HF 5

KPH 37°54'30"N 122°43'40"W 4247 k 4/5 6 13 A1A, F1B HF 5

KPH 37°54'30"N 122°43'40"W 6320 k 6269 F1B HF 5

KPH 37°54'30"N 122°43'40"W 6320.5 k 6269.5 F1B HF 5

KPH 37°54'30"N 122°43'40"W 6324 k 6273 F1B HF 5

KPH 37°54'30"N 122°43'40"W 6324.5 k 6273.5 F1B HF 5

KPH 37°54'30"N 122°43'40"W 6477.5 k 6/5 6 13 A1A, F1B HF 5

KPH 37°54'30"N 122°43'40"W 6488.5 k A1A, F1B HF 5

KPH 37°54'30"N 122°43'40"W 8422.5 k 8382.5 F1B HF 10

KPH 37°54'30"N 122°43'40"W 8423 k 8383 F1B HF 10

KPH 37°54'30"N 122°43'40"W 8426.5 k 8386.5 F1B HF 10

KPH 37°54'30"N 122°43'40"W 8427 k 8387 F1B HF 10

KPH 37°54'30"N 122°43'40"W 8618 k 8/5 6 13 A1A, F1B HF 10

KPH 37°54'30"N 122°43'40"W 8642 k A1A, F1B HF 10

KPH 37°54'30"N 122°43'40"W 12585.5 k 12483 F1B HF 15

KPH 37°54'30"N 122°43'40"W 12586 k 12483.5 F1B HF 15

KPH 37°54'30"N 122°43'40"W 12589.5 k 12487 F1B HF 15

KPH 37°54'30"N 122°43'40"W 12590 k 12487.5 F1B HF 15

KPH 37°54'30"N 122°43'40"W 12598 k 12495.5 F1B HF 15

KPH 37°54'30"N 122°43'40"W 12600 k 12497.5 F1B HF 15

KPH 37°54'30"N 122°43'40"W 12808.5 k A1A, F1B HF 15

KPH 37°54'30"N 122°43'40"W 13002 k 12/5 6 13 A1A, F1B HF 15

KPH 37°54'30"N 122°43'40"W 16813 k 16689.5 F1B HF 15

KPH 37°54'30"N 122°43'40"W 16813.5 k 16690 F1B HF 15

KPH 37°54'30"N 122°43'40"W 16817 k 16693.5 F1B HF 15

KPH 37°54'30"N 122°43'40"W 16817.5 k 16694 F1B HF 15

KPH 37°54'30"N 122°43'40"W 16825 k 16702 F1B HF 15

KPH 37°54'30"N 122°43'40"W 17016.5 k 16/5 6 13 A1A, F1B HF 15

KPH 37°54'30"N 122°43'40"W 17016.8 k A1A, F1B HF 15

KPH 37°54'30"N 122°43'40"W 17088.8 k A1A, F1B HF 15

KPH 37°54'30"N 122°43'40"W 22382.5 k 22290.5 F1B HF 15

KPH 37°54'30"N 122°43'40"W 22383 k 22291 F1B HF 15

KPH 37°54'30"N 122°43'40"W 22386.5 k 22294.5 F1B HF 15

KPH 37°54'30"N 122°43'40"W 22387 k 22295 F1B HF 15

KPH 37°54'30"N 122°43'40"W 22395 k 22303 F1B HF 15

KPH 37°54'30"N 122°43'40"W 22477.5 k A1A, F1B HF 15

KPH 37°54'30"N 122°43'40"W 22479 k 22/3 4 7 A1A, F1B HF 15

KPH 37°54'30"N 122°43'40"W 22557 k A1A, F1B HF 15

SanFrancisco/CaliforniaRadio KPH (updated JUN 2012)

KSM 426 k 425 A1A MF 5

KSM 500 k 500 A1A MF 5

KSM 4350.5 k 4184 A1A HF 5

KSM 6474 k 6276 A1A HF 5

KSM 8438.3 k 8368 A1A HF 5

KSM 12993 k 12552 A1A HF 5

KSM 16914 k 16736 A1A HF 5

KSM 22445.8 k 22280.5 A1A HF 5