9M1Z

One Malaysian callsign, two island DXpeditions — the great island of Borneo, and the reef islands of Semporna.

IOTA OC-088 + OC-133Sabah 9M6 & Sarawak 9M8

Choose an expedition

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Two expeditions

Each one has its own profile, operating detail, band plan and QSL route.

Borneo Island

IOTA OC-088 · June–September 2024

The tips of Sabah and Sarawak, worked from three far corners of the island as a shakedown for a Spratly Islands expedition.

View the Borneo expedition

Semporna Islands

IOTA OC-133 · 1–15 September 2024

Island-hopping Mabul, Timba-Timba, Mataking and Pom-Pom across the reefs of the Tun Sakaran Marine Park.

View the Semporna expedition

9M1Z is a Malaysian expedition callsign that spent 2024 putting the islands of East Malaysia on the air, band by band, from the sand.

The year fell into two chapters. First came Borneo itself — IOTA OC-088 — activated from the tips of Sarawak and Sabah to test the team and its kit. Then the station went to sea for the Semporna islands — IOTA OC-133 — a fifteen-day run across four reef islands with younger operators sharing the keys. Both chapters worked the world in SSB, CW and the digital modes, and both share the same band plan and QSL routes below.

Band plan

Frequencies in MHz, shared by both expeditions, current from 26 June 2024.

Band	CW	SSB	FT8	FT4	RTTY
80m	–	–	3.573	–	–
60m	–	–	5.357	–	–
40m	7.011	7.145 / 7.195*	7.056	7.047	7.044
30m	10.111	–	10.131	10.140	10.143
20m	14.011	14.245	14.090	14.080	14.083
17m	18.076	18.135	18.095	18.104	18.091
15m	21.011	21.285	21.090	21.140	21.083
12m	24.906	24.955	24.911	24.919	24.921
10m	28.011	28.485	28.090	28.180	28.083
6m	–	–	50.313	50.318	–

LSB on 40–80 m and USB on 6 m are worked simplex, no split. 60 m and 6 m FT8 and all FT4 run standard MSHV, not Fox/Hound. The 7.195 MHz slot marked * is a reserved backup for 40 m SSB. Live CQ status is posted at marhazk.com/9m1z/cq.

Confirming a contact

However you worked 9M1Z, the same routes confirm both expeditions.

Look up 9M1Z on QRZ

LoTW: Uploaded after each expedition — the quickest confirmation.
Club Log: OQRS for direct and bureau; Semporna islands filed as separate logs.
Direct: Via 9W8ZZK or 9M8WIN with return postage.
Also: QRZ Logbook, eQSL and Ham365. No paper bureau.