April 2025

← March This month May → DXpeditions

47 contests running this month. Names only at this zoom — tap a contest for its times, in your own clock or UTC. A contest running across midnight appears on every day it is on the air, with marking the days it continues into rather than starts. Days are UTC, so a contest opening 2200Z sits on the UTC date — which may be the evening before where you are.

Contests in April 2025, by day
Mon	Tue	Wed	Thu	Fri	Sat	Sun
313 AGCW ZAP Merit Contest (ZMC) K1USN Slow Speed Test (SST) continues: SARL Equinox 6m African DX Entity Challenge (March)	14 ZL Autumn and Winter Sprints, CW ZL Autumn and Winter Sprints, FT4 ZL Autumn and Winter Sprints, SSB continues: SARL Equinox 6m African DX Entity Challenge (March)	24 A1Club Weekly Test (AWT) CWops Test (CWT)×2 (2 sessions) VHF-UHF FT8 Activity: 144 MHz continues: SARL Equinox 6m African DX Entity Challenge (March)	34 CWops Test (CWT)×2 (2 sessions) SARL 80 m QSO Party SKCC Straight Key Sprint Europe (SKSE) continues: SARL Equinox 6m African DX Entity Challenge (March)	45 K1USN Slow Speed Test (SST) NCCC FT4 Sprint (FT4 NS) NCCC RTTY Sprint (RTTY NS) NCCC Sprint (NS) continues: SARL Equinox 6m African DX Entity Challenge (March)	54 PODXS 070 Club New Member Jamboree SARL QRP Contest (Autumn leg) SP DX Contest continues: SARL Equinox 6m African DX Entity Challenge (March)	62 continues: SARL Equinox 6m African DX Entity Challenge (March) continues: SP DX Contest
73 AGCW ZAP Merit Contest (ZMC) K1USN Slow Speed Test (SST) continues: SARL Equinox 6m African DX Entity Challenge (March)	86 ARS Spartan Sprint DARC RTTY-Kurzcontest ZL Autumn and Winter Sprints, CW ZL Autumn and Winter Sprints, FT4 ZL Autumn and Winter Sprints, SSB continues: SARL Equinox 6m African DX Entity Challenge (March)	94 A1Club Weekly Test (AWT) CWops Test (CWT)×2 (2 sessions) VHF-UHF FT8 Activity: 432 MHz continues: SARL Equinox 6m African DX Entity Challenge (March)	102 CWops Test (CWT)×2 (2 sessions) continues: SARL Equinox 6m African DX Entity Challenge (March)	115 K1USN Slow Speed Test (SST) NCCC FT4 Sprint (FT4 NS) NCCC RTTY Sprint (RTTY NS) NCCC Sprint (NS) continues: SARL Equinox 6m African DX Entity Challenge (March)	128 Africa FT4 DX Contest Georgia QSO Party IG-RY World Wide RTTY Contest Japan International DX Contest, CW New Mexico QSO Party OK/OM DX Contest, SSB SKCC Weekend Sprintathon (WES) continues: SARL Equinox 6m African DX Entity Challenge (March)	138 Georgia QSO Party×2 (2 sessions) ZS4 QSO Party continues: IG-RY World Wide RTTY Contest continues: Japan International DX Contest, CW continues: New Mexico QSO Party continues: OK/OM DX Contest, SSB continues: SARL Equinox 6m African DX Entity Challenge (March) continues: SKCC Weekend Sprintathon (WES)
144 4 States QRP Group Second Sunday Sprint (SSS) AGCW ZAP Merit Contest (ZMC) K1USN Slow Speed Test (SST) continues: SARL Equinox 6m African DX Entity Challenge (March)	154 ZL Autumn and Winter Sprints, CW ZL Autumn and Winter Sprints, FT4 ZL Autumn and Winter Sprints, SSB continues: SARL Equinox 6m African DX Entity Challenge (March)	163 A1Club Weekly Test (AWT) CWops Test (CWT)×2 (2 sessions) VHF-UHF FT8 Activity: 1296 MHz	171 CWops Test (CWT)×2 (2 sessions)	186 Amatőr rádiózás világnapja RF-WD URH K1USN Slow Speed Test (SST) NCCC FT4 Sprint (FT4 NS) NCCC RTTY Sprint (RTTY NS) NCCC Sprint (NS) World Amateur Radio Day Contest HF (RF-WD RH)	194 ES Open HF Championship IARU Region 1 50 MHz MGM Contest Michigan QSO Party Ontario QSO Party	207 9A Activity Contest ARRL Rookie Roundup, SSB Ontario QSO Party×2 (2 sessions) Quebec QSO Party ÖVSV VHF/UHF/Microwave Activity Contest continues: IARU Region 1 50 MHz MGM Contest continues: Michigan QSO Party
212 AGCW ZAP Merit Contest (ZMC) K1USN Slow Speed Test (SST)	223 ZL Autumn and Winter Sprints, CW ZL Autumn and Winter Sprints, FT4 ZL Autumn and Winter Sprints, SSB	233 A1Club Weekly Test (AWT) CWops Test (CWT)×2 (2 sessions) SKCC Straight Key Sprint (SKS)	241 CWops Test (CWT)×2 (2 sessions)	254 K1USN Slow Speed Test (SST) NCCC FT4 Sprint (FT4 NS) NCCC RTTY Sprint (RTTY NS) NCCC Sprint (NS)	266 ALL JA Contest Florida QSO Party Helvetia Contest SARL Saturday 40 m Club Contest SP DX RTTY Contest UK/EI DX Contest, CW	276 BARTG Sprint75 Contest Florida QSO Party×2 (2 sessions) continues: ALL JA Contest continues: Helvetia Contest continues: SP DX RTTY Contest continues: UK/EI DX Contest, CW
282 AGCW ZAP Merit Contest (ZMC) K1USN Slow Speed Test (SST)	293 ZL Autumn and Winter Sprints, CW ZL Autumn and Winter Sprints, FT4 ZL Autumn and Winter Sprints, SSB	302 A1Club Weekly Test (AWT) CWops Test (CWT)×2 (2 sessions)	14 AGCW QRP/QRP Party All Austrian Exercise AOEE 80/40m×2 (2 sessions) CWops Test (CWT)×2 (2 sessions) SKCC Straight Key Sprint Europe (SKSE)	24 K1USN Slow Speed Test (SST) NCCC FT4 Sprint (FT4 NS) NCCC RTTY Sprint (RTTY NS) NCCC Sprint (NS)	37 7th Call Area QSO Party ARI International DX Contest Delaware QSO Party Harry Angel Memorial Sprint Indiana QSO Party New England QSO Party URH Magyar Kupa Rádióforgalmi Versenysorozat	48 AWA Valve SSB QSO Party LRAL 4 May 80m Contest×2 (2 sessions) New England QSO Party×2 (2 sessions) continues: 7th Call Area QSO Party continues: ARI International DX Contest continues: Delaware QSO Party continues: Indiana QSO Party continues: URH Magyar Kupa Rádióforgalmi Versenysorozat

Every session in April 202547

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102 sessions across 47 contests; repeats share a row.

Contests starting in April 2025
Contest	Date	Start	End	Duration	Mode	Band	Sponsor	Starts in
ZL Autumn and Winter Sprints, CW5 sessions	Tue 1 AprTue 8 AprTue 15 AprTue 22 AprTue 29 Apr	0800Z0800Z0800Z0800Z0800Z	0829Z0829Z0829Z0829Z0829Z	29m	CW	80m	NZART	endedendedendedendedended
ZL Autumn and Winter Sprints, SSB5 sessions	Tue 1 AprTue 8 AprTue 15 AprTue 22 AprTue 29 Apr	0830Z0830Z0830Z0830Z0830Z	0859Z0859Z0859Z0859Z0859Z	29m	SSB	80m	NZART	endedendedendedendedended
ZL Autumn and Winter Sprints, FT45 sessions	Tue 1 AprTue 8 AprTue 15 AprTue 22 AprTue 29 Apr	0900Z0900Z0900Z0900Z0900Z	0929Z0929Z0929Z0929Z0929Z	29m	FT8/FT4FT4	80m	NZART	endedendedendedendedended
A1Club Weekly Test (AWT)5 sessions	Wed 2 AprWed 9 AprWed 16 AprWed 23 AprWed 30 Apr	1145Z1145Z1145Z1145Z1145Z	1300Z1300Z1300Z1300Z1300Z	1h 15m	CW	not recorded	A1 Club	endedendedendedendedended
CWops Test (CWT)18 sessions	Wed 2 AprWed 2 AprThu 3 AprThu 3 AprWed 9 AprWed 9 AprThu 10 AprThu 10 AprWed 16 AprWed 16 AprThu 17 AprThu 17 AprWed 23 AprWed 23 AprThu 24 AprThu 24 AprWed 30 AprWed 30 Apr	1300Z1900Z0300Z0700Z1300Z1900Z0300Z0700Z1300Z1900Z0300Z0700Z1300Z1900Z0300Z0700Z1300Z1900Z	1400Z2000Z0400Z0800Z1400Z2000Z0400Z0800Z1400Z2000Z0400Z0800Z1400Z2000Z0400Z0800Z1400Z2000Z	1h	CW	160-6m	CWops	endedendedendedendedendedendedendedendedendedendedendedendedendedendedendedendedendedended
VHF-UHF FT8 Activity: 144 MHz unverified	Wed 2 Apr	1700Z	2100Z	4h	FT8/FT4	2m	QSO BANAT Association (YO2KQT)	ended
SARL 80 m QSO Party	Thu 3 Apr	1700Z	2000Z	3h	SSB	80m	SARL	ended
SKCC Straight Key Sprint Europe (SKSE)	Thu 3 Apr	1900Z	2100Z	2h	CW	160-6m	Straight Key Century Club	ended
NCCC FT4 Sprint (FT4 NS)4 sessions	Fri 4 AprFri 11 AprFri 18 AprFri 25 Apr	0100Z0100Z0100Z0100Z	0130Z0130Z0130Z0130Z	30m	FT8/FT4FT4	160-6m	Northern California Contest Club (NCCC)	endedendedendedended
NCCC RTTY Sprint (RTTY NS)4 sessions	Fri 4 AprFri 11 AprFri 18 AprFri 25 Apr	0145Z0145Z0145Z0145Z	0215Z0215Z0215Z0215Z	30m	RTTY	160-15m	Northern California Contest Club (NCCC)	endedendedendedended
NCCC Sprint (NS)4 sessions	Fri 4 AprFri 11 AprFri 18 AprFri 25 Apr	0230Z0230Z0230Z0230Z	0300Z0300Z0300Z0300Z	30m	CW	160-15m	Northern California Contest Club (NCCC)	endedendedendedended
K1USN Slow Speed Test (SST)8 sessions	Fri 4 AprMon 7 AprFri 11 AprMon 14 AprFri 18 AprMon 21 AprFri 25 AprMon 28 Apr	2000Z0000Z2000Z0000Z2000Z0000Z2000Z0000Z	2100Z0100Z2100Z0100Z2100Z0100Z2100Z0100Z	1h	CW	160-10m	K1USN Radio Club	endedendedendedendedendedendedendedended
PODXS 070 Club New Member Jamboree	Sat 5 Apr	0000Z	2359Z	23h 59m	DigitalPSK31	80-10m	PODXS 070 Club	ended
SARL QRP Contest (Autumn leg)	Sat 5 Apr	1330Z	1530Z	2h	SSBCW	40m/20m/10m	SARL	ended
SP DX Contest	Sat 5 Apr	1500Z	1459Z Sun 6 Apr	23h 59m	SSBCW	160-10m	PZK / SP DX Club	ended
AGCW ZAP Merit Contest (ZMC) unverified4 sessions	Mon 7 AprMon 14 AprMon 21 AprMon 28 Apr	1740Z1740Z1740Z1740Z	1830Z1830Z1830Z1830Z	50m	CW	80m	AGCW-DL	endedendedendedended
ARS Spartan Sprint	Tue 8 Apr	0000Z	0200Z	2h	CW	80-10m	Adventure Radio Society	ended
DARC RTTY-Kurzcontest	Tue 8 Apr	1800Z	1929Z	1h 29m	RTTYRTTY 45.45 baud	80m/40m	DARC	ended
VHF-UHF FT8 Activity: 432 MHz unverified	Wed 9 Apr	1700Z	2100Z	4h	FT8/FT4	70cm	QSO BANAT Association (YO2KQT)	ended
Japan International DX Contest, CW	Sat 12 Apr	0700Z	1300Z Sun 13 Apr	30h	CW	160-10m	JIDX Contest Committee	ended
IG-RY World Wide RTTY Contest	Sat 12 Apr	1200Z	1800Z Sun 13 Apr	30h	RTTYRTTY 45.45 baud	80-10m	Interest Group RTTY (IG-RY)	ended
OK/OM DX Contest, SSB	Sat 12 Apr	1200Z	1159Z Sun 13 Apr	23h 59m	SSB	160-10m	CRK / SARA	ended
SKCC Weekend Sprintathon (WES)	Sat 12 Apr	1200Z	2359Z Sun 13 Apr	35h 59m	CW	160-6m	Straight Key Century Club	ended
New Mexico QSO Party	Sat 12 Apr	1400Z	0200Z Sun 13 Apr	12h	SSBCWDigitalFT8/FT4	160-2m	New Mexico QSO Party	ended
Africa FT4 DX Contest	Sat 12 Apr	1500Z	1800Z	3h	FT8/FT4FT4	80m/40m/20m	SARL	ended
Georgia QSO Party2 sessions	Sat 12 AprSun 13 Apr	1800Z1400Z	0359Z Sun 13 Apr2359Z	9h 59m	SSBCW	not recorded	Southeastern Contest Club and Southeast DX Club	endedended
ZS4 QSO Party	Sun 13 Apr	1400Z	1500Z	1h	CWSSB	40m	Sasolburg Amateur Radio Club	ended
4 States QRP Group Second Sunday Sprint (SSS)	Mon 14 Apr	0000Z	0200Z	2h	CWSSBDigital	160-10m	4 States QRP Group	ended
VHF-UHF FT8 Activity: 1296 MHz unverified	Wed 16 Apr	1700Z	2100Z	4h	DigitalFT8	23cm	QSO BANAT Association (YO2KQT)	ended
World Amateur Radio Day Contest HF (RF-WD RH)	Fri 18 Apr	1600Z	1659Z	59m	CWSSB	80m	MRASZ	ended
Amatőr rádiózás világnapja RF-WD URH	Fri 18 Apr	1730Z	1829Z	59m	CWSSB	2m	MRASZ	ended
ES Open HF Championship	Sat 19 Apr	0500Z	0859Z	3h 59m	CWSSB	80m/40m	ERAU	ended
IARU Region 1 50 MHz MGM Contest	Sat 19 Apr	1400Z	1400Z Sun 20 Apr	24h	DigitalMGM (machine generated modes)	6m	IARU Region 1 VHF+ Committee	ended
Michigan QSO Party	Sat 19 Apr	1600Z	0400Z Sun 20 Apr	12h	SSBCW	80-10m	Mad River Radio Club	ended
Ontario QSO Party2 sessions	Sat 19 AprSun 20 Apr	1800Z1200Z	0300Z Sun 20 Apr2000Z	9h8h	SSBCW	160-2m	Contest Club Ontario	endedended
9A Activity Contest	Sun 20 Apr	0700Z	1200Z	5h	CWSSBFM	6-23cm	HRS	ended
ÖVSV VHF/UHF/Microwave Activity Contest	Sun 20 Apr	0700Z	1300Z	6h	CWSSBAMFM	6-3cm	ÖVSV	ended
Quebec QSO Party	Sun 20 Apr	1300Z	2359Z	10h 59m	SSBCW	80-2m	Club Radio Amateur de l'Outaouais	ended
ARRL Rookie Roundup, SSB	Sun 20 Apr	1800Z	2359Z	5h 59m	SSB	80-10m	ARRL	ended
SKCC Straight Key Sprint (SKS)	Wed 23 Apr	0000Z	0200Z	2h	CW	160-6m	Straight Key Century Club	ended
ALL JA Contest can't enter	Sat 26 Apr	1200Z	1200Z Sun 27 Apr	24h	CWSSBFMAM	160-6m	JARL	ended
SP DX RTTY Contest	Sat 26 Apr	1200Z	1200Z Sun 27 Apr	24h	RTTY	80-10m	PK RVG	ended
UK/EI DX Contest, CW	Sat 26 Apr	1200Z	1200Z Sun 27 Apr	24h	CW	80-10m	UK/EI Contest Club	ended
Helvetia Contest	Sat 26 Apr	1300Z	1259Z Sun 27 Apr	23h 59m	CWSSBRTTYDigitalFT8/FT4PSK31, PSK63	160-10m	USKA	ended
SARL Saturday 40 m Club Contest can't enter	Sat 26 Apr	1500Z	1600Z	1h	SSBCWRTTY	40m	SARL	ended
Florida QSO Party2 sessions	Sat 26 AprSun 27 Apr	1600Z1200Z	0159Z Sun 27 Apr2159Z	9h 59m	SSBCW	40-10m	Florida Contest Group	endedended
BARTG Sprint75 Contest	Sun 27 Apr	1700Z	2059Z	3h 59m	RTTYRTTY 75 baud	80-10m	BARTG	ended

ZL Autumn and Winter Sprints, CW
CW · 80m · NZART
- 0800Z Tue 1 Apr → 0829Z · 29mended
- 0800Z Tue 8 Apr → 0829Z · 29mended
- 0800Z Tue 15 Apr → 0829Z · 29mended
- 0800Z Tue 22 Apr → 0829Z · 29mended
- 0800Z Tue 29 Apr → 0829Z · 29mended
ZL Autumn and Winter Sprints, SSB
SSB · 80m · NZART
- 0830Z Tue 1 Apr → 0859Z · 29mended
- 0830Z Tue 8 Apr → 0859Z · 29mended
- 0830Z Tue 15 Apr → 0859Z · 29mended
- 0830Z Tue 22 Apr → 0859Z · 29mended
- 0830Z Tue 29 Apr → 0859Z · 29mended
ZL Autumn and Winter Sprints, FT4
FT8/FT4FT4 · 80m · NZART
- 0900Z Tue 1 Apr → 0929Z · 29mended
- 0900Z Tue 8 Apr → 0929Z · 29mended
- 0900Z Tue 15 Apr → 0929Z · 29mended
- 0900Z Tue 22 Apr → 0929Z · 29mended
- 0900Z Tue 29 Apr → 0929Z · 29mended
A1Club Weekly Test (AWT)
CW · A1 Club
- 1145Z Wed 2 Apr → 1300Z · 1h 15mended
- 1145Z Wed 9 Apr → 1300Z · 1h 15mended
- 1145Z Wed 16 Apr → 1300Z · 1h 15mended
- 1145Z Wed 23 Apr → 1300Z · 1h 15mended
- 1145Z Wed 30 Apr → 1300Z · 1h 15mended
CWops Test (CWT)
CW · 160-6m · CWops
- 1300Z Wed 2 Apr → 1400Z · 1hended
- 1900Z Wed 2 Apr → 2000Z · 1hended
- 0300Z Thu 3 Apr → 0400Z · 1hended
- 0700Z Thu 3 Apr → 0800Z · 1hended
- 1300Z Wed 9 Apr → 1400Z · 1hended
- 1900Z Wed 9 Apr → 2000Z · 1hended
- 0300Z Thu 10 Apr → 0400Z · 1hended
- 0700Z Thu 10 Apr → 0800Z · 1hended
- 1300Z Wed 16 Apr → 1400Z · 1hended
- 1900Z Wed 16 Apr → 2000Z · 1hended
- 0300Z Thu 17 Apr → 0400Z · 1hended
- 0700Z Thu 17 Apr → 0800Z · 1hended
- 1300Z Wed 23 Apr → 1400Z · 1hended
- 1900Z Wed 23 Apr → 2000Z · 1hended
- 0300Z Thu 24 Apr → 0400Z · 1hended
- 0700Z Thu 24 Apr → 0800Z · 1hended
- 1300Z Wed 30 Apr → 1400Z · 1hended
- 1900Z Wed 30 Apr → 2000Z · 1hended
VHF-UHF FT8 Activity: 144 MHz unverified
FT8/FT4 · 2m · QSO BANAT Association (YO2KQT)
- 1700Z Wed 2 Apr → 2100Z · 4hended
SARL 80 m QSO Party
SSB · 80m · SARL
- 1700Z Thu 3 Apr → 2000Z · 3hended
SKCC Straight Key Sprint Europe (SKSE)
CW · 160-6m · Straight Key Century Club
- 1900Z Thu 3 Apr → 2100Z · 2hended
NCCC FT4 Sprint (FT4 NS)
FT8/FT4FT4 · 160-6m · Northern California Contest Club (NCCC)
- 0100Z Fri 4 Apr → 0130Z · 30mended
- 0100Z Fri 11 Apr → 0130Z · 30mended
- 0100Z Fri 18 Apr → 0130Z · 30mended
- 0100Z Fri 25 Apr → 0130Z · 30mended
NCCC RTTY Sprint (RTTY NS)
RTTY · 160-15m · Northern California Contest Club (NCCC)
- 0145Z Fri 4 Apr → 0215Z · 30mended
- 0145Z Fri 11 Apr → 0215Z · 30mended
- 0145Z Fri 18 Apr → 0215Z · 30mended
- 0145Z Fri 25 Apr → 0215Z · 30mended
NCCC Sprint (NS)
CW · 160-15m · Northern California Contest Club (NCCC)
- 0230Z Fri 4 Apr → 0300Z · 30mended
- 0230Z Fri 11 Apr → 0300Z · 30mended
- 0230Z Fri 18 Apr → 0300Z · 30mended
- 0230Z Fri 25 Apr → 0300Z · 30mended
K1USN Slow Speed Test (SST)
CW · 160-10m · K1USN Radio Club
- 2000Z Fri 4 Apr → 2100Z · 1hended
- 0000Z Mon 7 Apr → 0100Z · 1hended
- 2000Z Fri 11 Apr → 2100Z · 1hended
- 0000Z Mon 14 Apr → 0100Z · 1hended
- 2000Z Fri 18 Apr → 2100Z · 1hended
- 0000Z Mon 21 Apr → 0100Z · 1hended
- 2000Z Fri 25 Apr → 2100Z · 1hended
- 0000Z Mon 28 Apr → 0100Z · 1hended
PODXS 070 Club New Member Jamboree
DigitalPSK31 · 80-10m · PODXS 070 Club
- 0000Z Sat 5 Apr → 2359Z · 23h 59mended
SARL QRP Contest (Autumn leg)
SSBCW · 40m/20m/10m · SARL
- 1330Z Sat 5 Apr → 1530Z · 2hended
SP DX Contest
SSBCW · 160-10m · PZK / SP DX Club
- 1500Z Sat 5 Apr → 1459Z Sun 6 Apr · 23h 59mended
AGCW ZAP Merit Contest (ZMC) unverified
CW · 80m · AGCW-DL
- 1740Z Mon 7 Apr → 1830Z · 50mended
- 1740Z Mon 14 Apr → 1830Z · 50mended
- 1740Z Mon 21 Apr → 1830Z · 50mended
- 1740Z Mon 28 Apr → 1830Z · 50mended
ARS Spartan Sprint
CW · 80-10m · Adventure Radio Society
- 0000Z Tue 8 Apr → 0200Z · 2hended
DARC RTTY-Kurzcontest
RTTYRTTY 45.45 baud · 80m/40m · DARC
- 1800Z Tue 8 Apr → 1929Z · 1h 29mended
VHF-UHF FT8 Activity: 432 MHz unverified
FT8/FT4 · 70cm · QSO BANAT Association (YO2KQT)
- 1700Z Wed 9 Apr → 2100Z · 4hended
Japan International DX Contest, CW
CW · 160-10m · JIDX Contest Committee
- 0700Z Sat 12 Apr → 1300Z Sun 13 Apr · 30hended
IG-RY World Wide RTTY Contest
RTTYRTTY 45.45 baud · 80-10m · Interest Group RTTY (IG-RY)
- 1200Z Sat 12 Apr → 1800Z Sun 13 Apr · 30hended
OK/OM DX Contest, SSB
SSB · 160-10m · CRK / SARA
- 1200Z Sat 12 Apr → 1159Z Sun 13 Apr · 23h 59mended
SKCC Weekend Sprintathon (WES)
CW · 160-6m · Straight Key Century Club
- 1200Z Sat 12 Apr → 2359Z Sun 13 Apr · 35h 59mended
New Mexico QSO Party
SSBCWDigitalFT8/FT4 · 160-2m · New Mexico QSO Party
- 1400Z Sat 12 Apr → 0200Z Sun 13 Apr · 12hended
Africa FT4 DX Contest
FT8/FT4FT4 · 80m/40m/20m · SARL
- 1500Z Sat 12 Apr → 1800Z · 3hended
Georgia QSO Party
SSBCW · Southeastern Contest Club and Southeast DX Club
- 1800Z Sat 12 Apr → 0359Z Sun 13 Apr · 9h 59mended
- 1400Z Sun 13 Apr → 2359Z · 9h 59mended
ZS4 QSO Party
CWSSB · 40m · Sasolburg Amateur Radio Club
- 1400Z Sun 13 Apr → 1500Z · 1hended
4 States QRP Group Second Sunday Sprint (SSS)
CWSSBDigital · 160-10m · 4 States QRP Group
- 0000Z Mon 14 Apr → 0200Z · 2hended
VHF-UHF FT8 Activity: 1296 MHz unverified
DigitalFT8 · 23cm · QSO BANAT Association (YO2KQT)
- 1700Z Wed 16 Apr → 2100Z · 4hended
World Amateur Radio Day Contest HF (RF-WD RH)
CWSSB · 80m · MRASZ
- 1600Z Fri 18 Apr → 1659Z · 59mended
Amatőr rádiózás világnapja RF-WD URH
CWSSB · 2m · MRASZ
- 1730Z Fri 18 Apr → 1829Z · 59mended
ES Open HF Championship
CWSSB · 80m/40m · ERAU
- 0500Z Sat 19 Apr → 0859Z · 3h 59mended
IARU Region 1 50 MHz MGM Contest
DigitalMGM (machine generated modes) · 6m · IARU Region 1 VHF+ Committee
- 1400Z Sat 19 Apr → 1400Z Sun 20 Apr · 24hended
Michigan QSO Party
SSBCW · 80-10m · Mad River Radio Club
- 1600Z Sat 19 Apr → 0400Z Sun 20 Apr · 12hended
Ontario QSO Party
SSBCW · 160-2m · Contest Club Ontario
- 1800Z Sat 19 Apr → 0300Z Sun 20 Apr · 9hended
- 1200Z Sun 20 Apr → 2000Z · 8hended
9A Activity Contest
CWSSBFM · 6-23cm · HRS
- 0700Z Sun 20 Apr → 1200Z · 5hended
ÖVSV VHF/UHF/Microwave Activity Contest
CWSSBAMFM · 6-3cm · ÖVSV
- 0700Z Sun 20 Apr → 1300Z · 6hended
Quebec QSO Party
SSBCW · 80-2m · Club Radio Amateur de l'Outaouais
- 1300Z Sun 20 Apr → 2359Z · 10h 59mended
ARRL Rookie Roundup, SSB
SSB · 80-10m · ARRL
- 1800Z Sun 20 Apr → 2359Z · 5h 59mended
SKCC Straight Key Sprint (SKS)
CW · 160-6m · Straight Key Century Club
- 0000Z Wed 23 Apr → 0200Z · 2hended
ALL JA Contest can't enter
CWSSBFMAM · 160-6m · JARL
- 1200Z Sat 26 Apr → 1200Z Sun 27 Apr · 24hended
SP DX RTTY Contest
RTTY · 80-10m · PK RVG
- 1200Z Sat 26 Apr → 1200Z Sun 27 Apr · 24hended
UK/EI DX Contest, CW
CW · 80-10m · UK/EI Contest Club
- 1200Z Sat 26 Apr → 1200Z Sun 27 Apr · 24hended
Helvetia Contest
CWSSBRTTYDigitalFT8/FT4PSK31, PSK63 · 160-10m · USKA
- 1300Z Sat 26 Apr → 1259Z Sun 27 Apr · 23h 59mended
SARL Saturday 40 m Club Contest can't enter
SSBCWRTTY · 40m · SARL
- 1500Z Sat 26 Apr → 1600Z · 1hended
Florida QSO Party
SSBCW · 40-10m · Florida Contest Group
- 1600Z Sat 26 Apr → 0159Z Sun 27 Apr · 9h 59mended
- 1200Z Sun 27 Apr → 2159Z · 9h 59mended
BARTG Sprint75 Contest
RTTYRTTY 75 baud · 80-10m · BARTG
- 1700Z Sun 27 Apr → 2059Z · 3h 59mended

April 2025

Every session in April 202547

VHF-UHF FT8 Activity: 144 MHz unverified

AGCW ZAP Merit Contest (ZMC) unverified

VHF-UHF FT8 Activity: 432 MHz unverified

VHF-UHF FT8 Activity: 1296 MHz unverified

ALL JA Contest can't enter

SARL Saturday 40 m Club Contest can't enter