April 2037

← March This month May → DXpeditions

46 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 2037, by day
Mon	Tue	Wed	Thu	Fri	Sat	Sun
303 AGCW ZAP Merit Contest (ZMC) K1USN Slow Speed Test (SST) continues: SARL Equinox 6m African DX Entity Challenge (March)	311 continues: SARL Equinox 6m African DX Entity Challenge (March)	14 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)	24 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)	35 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)	44 PODXS 070 Club New Member Jamboree SARL QRP Contest (Autumn leg) SP DX Contest continues: SARL Equinox 6m African DX Entity Challenge (March)	52 continues: SARL Equinox 6m African DX Entity Challenge (March) continues: SP DX Contest
63 AGCW ZAP Merit Contest (ZMC) K1USN Slow Speed Test (SST) continues: SARL Equinox 6m African DX Entity Challenge (March)	75 ARS Spartan Sprint 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)	84 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)	92 CWops Test (CWT)×2 (2 sessions) continues: SARL Equinox 6m African DX Entity Challenge (March)	105 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)	118 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)	128 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)
134 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)	145 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)	154 A1Club Weekly Test (AWT) CWops Test (CWT)×2 (2 sessions) VHF-UHF FT8 Activity: 1296 MHz continues: SARL Equinox 6m African DX Entity Challenge (March)	161 CWops Test (CWT)×2 (2 sessions)	174 K1USN Slow Speed Test (SST) NCCC FT4 Sprint (FT4 NS) NCCC RTTY Sprint (RTTY NS) NCCC Sprint (NS)	186 Amatőr rádiózás világnapja RF-WD URH ES Open HF Championship IARU Region 1 50 MHz MGM Contest Michigan QSO Party Ontario QSO Party World Amateur Radio Day Contest HF (RF-WD RH)	197 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
202 AGCW ZAP Merit Contest (ZMC) K1USN Slow Speed Test (SST)	213 ZL Autumn and Winter Sprints, CW ZL Autumn and Winter Sprints, FT4 ZL Autumn and Winter Sprints, SSB	223 A1Club Weekly Test (AWT) CWops Test (CWT)×2 (2 sessions) SKCC Straight Key Sprint (SKS)	231 CWops Test (CWT)×2 (2 sessions)	244 K1USN Slow Speed Test (SST) NCCC FT4 Sprint (FT4 NS) NCCC RTTY Sprint (RTTY NS) NCCC Sprint (NS)	255 ALL JA Contest Florida QSO Party Helvetia Contest SARL Saturday 40 m Club Contest SP DX RTTY Contest	265 BARTG Sprint75 Contest Florida QSO Party×2 (2 sessions) continues: ALL JA Contest continues: Helvetia Contest continues: SP DX RTTY Contest
272 AGCW ZAP Merit Contest (ZMC) K1USN Slow Speed Test (SST)	283 ZL Autumn and Winter Sprints, CW ZL Autumn and Winter Sprints, FT4 ZL Autumn and Winter Sprints, SSB	292 A1Club Weekly Test (AWT) CWops Test (CWT)×2 (2 sessions)	301 CWops Test (CWT)×2 (2 sessions)	16 AGCW QRP/QRP Party All Austrian Exercise AOEE 80/40m×2 (2 sessions) K1USN Slow Speed Test (SST) NCCC FT4 Sprint (FT4 NS) NCCC RTTY Sprint (RTTY NS) NCCC Sprint (NS)	27 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	37 AWA Valve SSB QSO Party 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 203746

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100 sessions across 46 contests; repeats share a row.

Contests starting in April 2037
Contest	Date	Start	End	Duration	Mode	Band	Sponsor	Starts in
A1Club Weekly Test (AWT)5 sessions	Wed 1 AprWed 8 AprWed 15 AprWed 22 AprWed 29 Apr	1145Z1145Z1145Z1145Z1145Z	1300Z1300Z1300Z1300Z1300Z	1h 15m	CW	not recorded	A1 Club	in 3816 daysin 3823 daysin 3830 daysin 3837 daysin 3844 days
CWops Test (CWT)20 sessions	Wed 1 AprWed 1 AprThu 2 AprThu 2 AprWed 8 AprWed 8 AprThu 9 AprThu 9 AprWed 15 AprWed 15 AprThu 16 AprThu 16 AprWed 22 AprWed 22 AprThu 23 AprThu 23 AprWed 29 AprWed 29 AprThu 30 AprThu 30 Apr	1300Z1900Z0300Z0700Z1300Z1900Z0300Z0700Z1300Z1900Z0300Z0700Z1300Z1900Z0300Z0700Z1300Z1900Z0300Z0700Z	1400Z2000Z0400Z0800Z1400Z2000Z0400Z0800Z1400Z2000Z0400Z0800Z1400Z2000Z0400Z0800Z1400Z2000Z0400Z0800Z	1h	CW	160-6m	CWops	in 3816 daysin 3816 daysin 3816 daysin 3816 daysin 3823 daysin 3823 daysin 3823 daysin 3823 daysin 3830 daysin 3830 daysin 3830 daysin 3830 daysin 3837 daysin 3837 daysin 3837 daysin 3837 daysin 3844 daysin 3844 daysin 3844 daysin 3844 days
VHF-UHF FT8 Activity: 144 MHz unverified	Wed 1 Apr	1700Z	2100Z	4h	FT8/FT4	2m	QSO BANAT Association (YO2KQT)	in 3816 days
SARL 80 m QSO Party	Thu 2 Apr	1700Z	2000Z	3h	SSB	80m	SARL	in 3817 days
SKCC Straight Key Sprint Europe (SKSE)	Thu 2 Apr	1900Z	2100Z	2h	CW	160-6m	Straight Key Century Club	in 3817 days
NCCC FT4 Sprint (FT4 NS)4 sessions	Fri 3 AprFri 10 AprFri 17 AprFri 24 Apr	0100Z0100Z0100Z0100Z	0130Z0130Z0130Z0130Z	30m	FT8/FT4FT4	160-6m	Northern California Contest Club (NCCC)	in 3817 daysin 3824 daysin 3831 daysin 3838 days
NCCC RTTY Sprint (RTTY NS)4 sessions	Fri 3 AprFri 10 AprFri 17 AprFri 24 Apr	0145Z0145Z0145Z0145Z	0215Z0215Z0215Z0215Z	30m	RTTY	160-15m	Northern California Contest Club (NCCC)	in 3817 daysin 3824 daysin 3831 daysin 3838 days
NCCC Sprint (NS)4 sessions	Fri 3 AprFri 10 AprFri 17 AprFri 24 Apr	0230Z0230Z0230Z0230Z	0300Z0300Z0300Z0300Z	30m	CW	160-15m	Northern California Contest Club (NCCC)	in 3817 daysin 3824 daysin 3831 daysin 3838 days
K1USN Slow Speed Test (SST)8 sessions	Fri 3 AprMon 6 AprFri 10 AprMon 13 AprFri 17 AprMon 20 AprFri 24 AprMon 27 Apr	2000Z0000Z2000Z0000Z2000Z0000Z2000Z0000Z	2100Z0100Z2100Z0100Z2100Z0100Z2100Z0100Z	1h	CW	160-10m	K1USN Radio Club	in 3818 daysin 3820 daysin 3825 daysin 3827 daysin 3832 daysin 3834 daysin 3839 daysin 3841 days
PODXS 070 Club New Member Jamboree	Sat 4 Apr	0000Z	2359Z	23h 59m	DigitalPSK31	80-10m	PODXS 070 Club	in 3818 days
SARL QRP Contest (Autumn leg)	Sat 4 Apr	1330Z	1530Z	2h	SSBCW	40m/20m/10m	SARL	in 3819 days
SP DX Contest	Sat 4 Apr	1500Z	1459Z Sun 5 Apr	23h 59m	SSBCW	160-10m	PZK / SP DX Club	in 3819 days
AGCW ZAP Merit Contest (ZMC) unverified4 sessions	Mon 6 AprMon 13 AprMon 20 AprMon 27 Apr	1740Z1740Z1740Z1740Z	1830Z1830Z1830Z1830Z	50m	CW	80m	AGCW-DL	in 3821 daysin 3828 daysin 3835 daysin 3842 days
ARS Spartan Sprint	Tue 7 Apr	0000Z	0200Z	2h	CW	80-10m	Adventure Radio Society	in 3821 days
ZL Autumn and Winter Sprints, CW4 sessions	Tue 7 AprTue 14 AprTue 21 AprTue 28 Apr	0800Z0800Z0800Z0800Z	0829Z0829Z0829Z0829Z	29m	CW	80m	NZART	in 3821 daysin 3828 daysin 3835 daysin 3842 days
ZL Autumn and Winter Sprints, SSB4 sessions	Tue 7 AprTue 14 AprTue 21 AprTue 28 Apr	0830Z0830Z0830Z0830Z	0859Z0859Z0859Z0859Z	29m	SSB	80m	NZART	in 3821 daysin 3828 daysin 3835 daysin 3842 days
ZL Autumn and Winter Sprints, FT44 sessions	Tue 7 AprTue 14 AprTue 21 AprTue 28 Apr	0900Z0900Z0900Z0900Z	0929Z0929Z0929Z0929Z	29m	FT8/FT4FT4	80m	NZART	in 3821 daysin 3828 daysin 3835 daysin 3842 days
VHF-UHF FT8 Activity: 432 MHz unverified	Wed 8 Apr	1700Z	2100Z	4h	FT8/FT4	70cm	QSO BANAT Association (YO2KQT)	in 3823 days
Japan International DX Contest, CW	Sat 11 Apr	0700Z	1300Z Sun 12 Apr	30h	CW	160-10m	JIDX Contest Committee	in 3825 days
IG-RY World Wide RTTY Contest	Sat 11 Apr	1200Z	1800Z Sun 12 Apr	30h	RTTYRTTY 45.45 baud	80-10m	Interest Group RTTY (IG-RY)	in 3826 days
OK/OM DX Contest, SSB	Sat 11 Apr	1200Z	1159Z Sun 12 Apr	23h 59m	SSB	160-10m	CRK / SARA	in 3826 days
SKCC Weekend Sprintathon (WES)	Sat 11 Apr	1200Z	2359Z Sun 12 Apr	35h 59m	CW	160-6m	Straight Key Century Club	in 3826 days
New Mexico QSO Party	Sat 11 Apr	1400Z	0200Z Sun 12 Apr	12h	SSBCWDigitalFT8/FT4	160-2m	New Mexico QSO Party	in 3826 days
Africa FT4 DX Contest	Sat 11 Apr	1500Z	1800Z	3h	FT8/FT4FT4	80m/40m/20m	SARL	in 3826 days
Georgia QSO Party2 sessions	Sat 11 AprSun 12 Apr	1800Z1400Z	0359Z Sun 12 Apr2359Z	9h 59m	SSBCW	not recorded	Southeastern Contest Club and Southeast DX Club	in 3826 daysin 3827 days
ZS4 QSO Party	Sun 12 Apr	1400Z	1500Z	1h	CWSSB	40m	Sasolburg Amateur Radio Club	in 3827 days
4 States QRP Group Second Sunday Sprint (SSS)	Mon 13 Apr	0000Z	0200Z	2h	CWSSBDigital	160-10m	4 States QRP Group	in 3827 days
DARC RTTY-Kurzcontest	Tue 14 Apr	1800Z	1929Z	1h 29m	RTTYRTTY 45.45 baud	80m/40m	DARC	in 3829 days
VHF-UHF FT8 Activity: 1296 MHz unverified	Wed 15 Apr	1700Z	2100Z	4h	DigitalFT8	23cm	QSO BANAT Association (YO2KQT)	in 3830 days
ES Open HF Championship	Sat 18 Apr	0500Z	0859Z	3h 59m	CWSSB	80m/40m	ERAU	in 3832 days
IARU Region 1 50 MHz MGM Contest	Sat 18 Apr	1400Z	1400Z Sun 19 Apr	24h	DigitalMGM (machine generated modes)	6m	IARU Region 1 VHF+ Committee	in 3833 days
Michigan QSO Party	Sat 18 Apr	1600Z	0400Z Sun 19 Apr	12h	SSBCW	80-10m	Mad River Radio Club	in 3833 days
World Amateur Radio Day Contest HF (RF-WD RH)	Sat 18 Apr	1600Z	1659Z	59m	CWSSB	80m	MRASZ	in 3833 days
Amatőr rádiózás világnapja RF-WD URH	Sat 18 Apr	1730Z	1829Z	59m	CWSSB	2m	MRASZ	in 3833 days
Ontario QSO Party2 sessions	Sat 18 AprSun 19 Apr	1800Z1200Z	0300Z Sun 19 Apr2000Z	9h8h	SSBCW	160-2m	Contest Club Ontario	in 3833 daysin 3834 days
9A Activity Contest	Sun 19 Apr	0700Z	1200Z	5h	CWSSBFM	6-23cm	HRS	in 3833 days
ÖVSV VHF/UHF/Microwave Activity Contest	Sun 19 Apr	0700Z	1300Z	6h	CWSSBAMFM	6-3cm	ÖVSV	in 3833 days
Quebec QSO Party	Sun 19 Apr	1300Z	2359Z	10h 59m	SSBCW	80-2m	Club Radio Amateur de l'Outaouais	in 3834 days
ARRL Rookie Roundup, SSB	Sun 19 Apr	1800Z	2359Z	5h 59m	SSB	80-10m	ARRL	in 3834 days
SKCC Straight Key Sprint (SKS)	Wed 22 Apr	0000Z	0200Z	2h	CW	160-6m	Straight Key Century Club	in 3836 days
ALL JA Contest can't enter	Sat 25 Apr	1200Z	1200Z Sun 26 Apr	24h	CWSSBFMAM	160-6m	JARL	in 3840 days
SP DX RTTY Contest	Sat 25 Apr	1200Z	1200Z Sun 26 Apr	24h	RTTY	80-10m	PK RVG	in 3840 days
Helvetia Contest	Sat 25 Apr	1300Z	1259Z Sun 26 Apr	23h 59m	CWSSBRTTYDigitalFT8/FT4PSK31, PSK63	160-10m	USKA	in 3840 days
SARL Saturday 40 m Club Contest can't enter	Sat 25 Apr	1500Z	1600Z	1h	SSBCWRTTY	40m	SARL	in 3840 days
Florida QSO Party2 sessions	Sat 25 AprSun 26 Apr	1600Z1200Z	0159Z Sun 26 Apr2159Z	9h 59m	SSBCW	40-10m	Florida Contest Group	in 3840 daysin 3841 days
BARTG Sprint75 Contest	Sun 26 Apr	1700Z	2059Z	3h 59m	RTTYRTTY 75 baud	80-10m	BARTG	in 3841 days

A1Club Weekly Test (AWT)
CW · A1 Club
- 1145Z Wed 1 Apr → 1300Z · 1h 15min 3816 days
- 1145Z Wed 8 Apr → 1300Z · 1h 15min 3823 days
- 1145Z Wed 15 Apr → 1300Z · 1h 15min 3830 days
- 1145Z Wed 22 Apr → 1300Z · 1h 15min 3837 days
- 1145Z Wed 29 Apr → 1300Z · 1h 15min 3844 days
CWops Test (CWT)
CW · 160-6m · CWops
- 1300Z Wed 1 Apr → 1400Z · 1hin 3816 days
- 1900Z Wed 1 Apr → 2000Z · 1hin 3816 days
- 0300Z Thu 2 Apr → 0400Z · 1hin 3816 days
- 0700Z Thu 2 Apr → 0800Z · 1hin 3816 days
- 1300Z Wed 8 Apr → 1400Z · 1hin 3823 days
- 1900Z Wed 8 Apr → 2000Z · 1hin 3823 days
- 0300Z Thu 9 Apr → 0400Z · 1hin 3823 days
- 0700Z Thu 9 Apr → 0800Z · 1hin 3823 days
- 1300Z Wed 15 Apr → 1400Z · 1hin 3830 days
- 1900Z Wed 15 Apr → 2000Z · 1hin 3830 days
- 0300Z Thu 16 Apr → 0400Z · 1hin 3830 days
- 0700Z Thu 16 Apr → 0800Z · 1hin 3830 days
- 1300Z Wed 22 Apr → 1400Z · 1hin 3837 days
- 1900Z Wed 22 Apr → 2000Z · 1hin 3837 days
- 0300Z Thu 23 Apr → 0400Z · 1hin 3837 days
- 0700Z Thu 23 Apr → 0800Z · 1hin 3837 days
- 1300Z Wed 29 Apr → 1400Z · 1hin 3844 days
- 1900Z Wed 29 Apr → 2000Z · 1hin 3844 days
- 0300Z Thu 30 Apr → 0400Z · 1hin 3844 days
- 0700Z Thu 30 Apr → 0800Z · 1hin 3844 days
VHF-UHF FT8 Activity: 144 MHz unverified
FT8/FT4 · 2m · QSO BANAT Association (YO2KQT)
- 1700Z Wed 1 Apr → 2100Z · 4hin 3816 days
SARL 80 m QSO Party
SSB · 80m · SARL
- 1700Z Thu 2 Apr → 2000Z · 3hin 3817 days
SKCC Straight Key Sprint Europe (SKSE)
CW · 160-6m · Straight Key Century Club
- 1900Z Thu 2 Apr → 2100Z · 2hin 3817 days
NCCC FT4 Sprint (FT4 NS)
FT8/FT4FT4 · 160-6m · Northern California Contest Club (NCCC)
- 0100Z Fri 3 Apr → 0130Z · 30min 3817 days
- 0100Z Fri 10 Apr → 0130Z · 30min 3824 days
- 0100Z Fri 17 Apr → 0130Z · 30min 3831 days
- 0100Z Fri 24 Apr → 0130Z · 30min 3838 days
NCCC RTTY Sprint (RTTY NS)
RTTY · 160-15m · Northern California Contest Club (NCCC)
- 0145Z Fri 3 Apr → 0215Z · 30min 3817 days
- 0145Z Fri 10 Apr → 0215Z · 30min 3824 days
- 0145Z Fri 17 Apr → 0215Z · 30min 3831 days
- 0145Z Fri 24 Apr → 0215Z · 30min 3838 days
NCCC Sprint (NS)
CW · 160-15m · Northern California Contest Club (NCCC)
- 0230Z Fri 3 Apr → 0300Z · 30min 3817 days
- 0230Z Fri 10 Apr → 0300Z · 30min 3824 days
- 0230Z Fri 17 Apr → 0300Z · 30min 3831 days
- 0230Z Fri 24 Apr → 0300Z · 30min 3838 days
K1USN Slow Speed Test (SST)
CW · 160-10m · K1USN Radio Club
- 2000Z Fri 3 Apr → 2100Z · 1hin 3818 days
- 0000Z Mon 6 Apr → 0100Z · 1hin 3820 days
- 2000Z Fri 10 Apr → 2100Z · 1hin 3825 days
- 0000Z Mon 13 Apr → 0100Z · 1hin 3827 days
- 2000Z Fri 17 Apr → 2100Z · 1hin 3832 days
- 0000Z Mon 20 Apr → 0100Z · 1hin 3834 days
- 2000Z Fri 24 Apr → 2100Z · 1hin 3839 days
- 0000Z Mon 27 Apr → 0100Z · 1hin 3841 days
PODXS 070 Club New Member Jamboree
DigitalPSK31 · 80-10m · PODXS 070 Club
- 0000Z Sat 4 Apr → 2359Z · 23h 59min 3818 days
SARL QRP Contest (Autumn leg)
SSBCW · 40m/20m/10m · SARL
- 1330Z Sat 4 Apr → 1530Z · 2hin 3819 days
SP DX Contest
SSBCW · 160-10m · PZK / SP DX Club
- 1500Z Sat 4 Apr → 1459Z Sun 5 Apr · 23h 59min 3819 days
AGCW ZAP Merit Contest (ZMC) unverified
CW · 80m · AGCW-DL
- 1740Z Mon 6 Apr → 1830Z · 50min 3821 days
- 1740Z Mon 13 Apr → 1830Z · 50min 3828 days
- 1740Z Mon 20 Apr → 1830Z · 50min 3835 days
- 1740Z Mon 27 Apr → 1830Z · 50min 3842 days
ARS Spartan Sprint
CW · 80-10m · Adventure Radio Society
- 0000Z Tue 7 Apr → 0200Z · 2hin 3821 days
ZL Autumn and Winter Sprints, CW
CW · 80m · NZART
- 0800Z Tue 7 Apr → 0829Z · 29min 3821 days
- 0800Z Tue 14 Apr → 0829Z · 29min 3828 days
- 0800Z Tue 21 Apr → 0829Z · 29min 3835 days
- 0800Z Tue 28 Apr → 0829Z · 29min 3842 days
ZL Autumn and Winter Sprints, SSB
SSB · 80m · NZART
- 0830Z Tue 7 Apr → 0859Z · 29min 3821 days
- 0830Z Tue 14 Apr → 0859Z · 29min 3828 days
- 0830Z Tue 21 Apr → 0859Z · 29min 3835 days
- 0830Z Tue 28 Apr → 0859Z · 29min 3842 days
ZL Autumn and Winter Sprints, FT4
FT8/FT4FT4 · 80m · NZART
- 0900Z Tue 7 Apr → 0929Z · 29min 3821 days
- 0900Z Tue 14 Apr → 0929Z · 29min 3828 days
- 0900Z Tue 21 Apr → 0929Z · 29min 3835 days
- 0900Z Tue 28 Apr → 0929Z · 29min 3842 days
VHF-UHF FT8 Activity: 432 MHz unverified
FT8/FT4 · 70cm · QSO BANAT Association (YO2KQT)
- 1700Z Wed 8 Apr → 2100Z · 4hin 3823 days
Japan International DX Contest, CW
CW · 160-10m · JIDX Contest Committee
- 0700Z Sat 11 Apr → 1300Z Sun 12 Apr · 30hin 3825 days
IG-RY World Wide RTTY Contest
RTTYRTTY 45.45 baud · 80-10m · Interest Group RTTY (IG-RY)
- 1200Z Sat 11 Apr → 1800Z Sun 12 Apr · 30hin 3826 days
OK/OM DX Contest, SSB
SSB · 160-10m · CRK / SARA
- 1200Z Sat 11 Apr → 1159Z Sun 12 Apr · 23h 59min 3826 days
SKCC Weekend Sprintathon (WES)
CW · 160-6m · Straight Key Century Club
- 1200Z Sat 11 Apr → 2359Z Sun 12 Apr · 35h 59min 3826 days
New Mexico QSO Party
SSBCWDigitalFT8/FT4 · 160-2m · New Mexico QSO Party
- 1400Z Sat 11 Apr → 0200Z Sun 12 Apr · 12hin 3826 days
Africa FT4 DX Contest
FT8/FT4FT4 · 80m/40m/20m · SARL
- 1500Z Sat 11 Apr → 1800Z · 3hin 3826 days
Georgia QSO Party
SSBCW · Southeastern Contest Club and Southeast DX Club
- 1800Z Sat 11 Apr → 0359Z Sun 12 Apr · 9h 59min 3826 days
- 1400Z Sun 12 Apr → 2359Z · 9h 59min 3827 days
ZS4 QSO Party
CWSSB · 40m · Sasolburg Amateur Radio Club
- 1400Z Sun 12 Apr → 1500Z · 1hin 3827 days
4 States QRP Group Second Sunday Sprint (SSS)
CWSSBDigital · 160-10m · 4 States QRP Group
- 0000Z Mon 13 Apr → 0200Z · 2hin 3827 days
DARC RTTY-Kurzcontest
RTTYRTTY 45.45 baud · 80m/40m · DARC
- 1800Z Tue 14 Apr → 1929Z · 1h 29min 3829 days
VHF-UHF FT8 Activity: 1296 MHz unverified
DigitalFT8 · 23cm · QSO BANAT Association (YO2KQT)
- 1700Z Wed 15 Apr → 2100Z · 4hin 3830 days
ES Open HF Championship
CWSSB · 80m/40m · ERAU
- 0500Z Sat 18 Apr → 0859Z · 3h 59min 3832 days
IARU Region 1 50 MHz MGM Contest
DigitalMGM (machine generated modes) · 6m · IARU Region 1 VHF+ Committee
- 1400Z Sat 18 Apr → 1400Z Sun 19 Apr · 24hin 3833 days
Michigan QSO Party
SSBCW · 80-10m · Mad River Radio Club
- 1600Z Sat 18 Apr → 0400Z Sun 19 Apr · 12hin 3833 days
World Amateur Radio Day Contest HF (RF-WD RH)
CWSSB · 80m · MRASZ
- 1600Z Sat 18 Apr → 1659Z · 59min 3833 days
Amatőr rádiózás világnapja RF-WD URH
CWSSB · 2m · MRASZ
- 1730Z Sat 18 Apr → 1829Z · 59min 3833 days
Ontario QSO Party
SSBCW · 160-2m · Contest Club Ontario
- 1800Z Sat 18 Apr → 0300Z Sun 19 Apr · 9hin 3833 days
- 1200Z Sun 19 Apr → 2000Z · 8hin 3834 days
9A Activity Contest
CWSSBFM · 6-23cm · HRS
- 0700Z Sun 19 Apr → 1200Z · 5hin 3833 days
ÖVSV VHF/UHF/Microwave Activity Contest
CWSSBAMFM · 6-3cm · ÖVSV
- 0700Z Sun 19 Apr → 1300Z · 6hin 3833 days
Quebec QSO Party
SSBCW · 80-2m · Club Radio Amateur de l'Outaouais
- 1300Z Sun 19 Apr → 2359Z · 10h 59min 3834 days
ARRL Rookie Roundup, SSB
SSB · 80-10m · ARRL
- 1800Z Sun 19 Apr → 2359Z · 5h 59min 3834 days
SKCC Straight Key Sprint (SKS)
CW · 160-6m · Straight Key Century Club
- 0000Z Wed 22 Apr → 0200Z · 2hin 3836 days
ALL JA Contest can't enter
CWSSBFMAM · 160-6m · JARL
- 1200Z Sat 25 Apr → 1200Z Sun 26 Apr · 24hin 3840 days
SP DX RTTY Contest
RTTY · 80-10m · PK RVG
- 1200Z Sat 25 Apr → 1200Z Sun 26 Apr · 24hin 3840 days
Helvetia Contest
CWSSBRTTYDigitalFT8/FT4PSK31, PSK63 · 160-10m · USKA
- 1300Z Sat 25 Apr → 1259Z Sun 26 Apr · 23h 59min 3840 days
SARL Saturday 40 m Club Contest can't enter
SSBCWRTTY · 40m · SARL
- 1500Z Sat 25 Apr → 1600Z · 1hin 3840 days
Florida QSO Party
SSBCW · 40-10m · Florida Contest Group
- 1600Z Sat 25 Apr → 0159Z Sun 26 Apr · 9h 59min 3840 days
- 1200Z Sun 26 Apr → 2159Z · 9h 59min 3841 days
BARTG Sprint75 Contest
RTTYRTTY 75 baud · 80-10m · BARTG
- 1700Z Sun 26 Apr → 2059Z · 3h 59min 3841 days

April 2037

Every session in April 203746

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