OI5AY — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: Finland Most frequent locator attributed to this token: KP30

Receiver-side FT8 activity involving OI5AY, decoded by SO8OO in southeastern Poland. 1,098 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, across 22 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-10-21.

These are automated observations at the SO8OO receiver, not an official contact log. Times are UTC. Attribution follows decoded FT8 message structure: CQ uses the first token and directed-looking messages use the second. Free text that resembles a directed message can be attributed imperfectly. Summary S/N reflects propagation plus SO8OO receiver, antenna and local-noise conditions. Counts are not adjusted for monitoring outages; transmissions that were not decoded are absent. Inferred entity and location data may be inaccurate for portable, remote or special-event operation.

SO8OO decoded 1,098 FT8 messages attributed to OI5AY as the transmitting token by decoded message structure across 22 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (46%), followed by 160 m (21%) and 40 m (17%). Most decodes (83%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (69%); the estimated median was -3 dB.

Overview

1,098

Messages attributed

UTC dates decoded

Active 15-min windows

-3 dB

Estimated median S/N

Bands

160m · 232 80m · 509 60m · 120 40m · 189 20m · 48

First attributed message: 2026-06-11
Last attributed message: 2026-10-21 22:15 UTC

Observed FT8 message patterns

Attributed sample: 1,098 messages
Active dates: 22 UTC dates
Estimated median S/N: -3 dB
Estimated 10th-90th percentile: -16 to +6 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 118, moderate (-15 to -9 dB) 221, strong (≥ -8 dB) 759.

WSJT-X defines S/N reports against a 2,500 Hz reference noise bandwidth. The ranges above are SO8OO receiver-side display categories, not official WSJT-X classes, transmitter-power measurements or estimates of how easy the station is to hear elsewhere. Statistics include only successful decodes on SO8OO's monitored FT8 channels; transmissions that were not decoded are absent.

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with OI5AY in decoded directed-looking exchanges:

HF5A · Poland ×3 EA3EDU · Spain ×2 G8OO · England ×2 OH2TWI · Finland ×2 OK1XV · Czech Republic ×2 PA3FR · Netherlands ×2 R2UZ/P · European Russia ×2 RU4CK · European Russia ×2 SP1MGM · Poland ×2 SQ9PBV · Poland ×2 E70SZ · Bosnia-Herzegovina ×2 OZ9FF · Denmark ×2

Attributed messages by UTC hour

Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.

Most frequent locator attributed to OI5AY

The map compares the centres and boundaries of the locator field attributed to this token by decoded message structure, 2° × 1° as a Maidenhead square, and SO8OO's six-character receiver square. The separation is not an exact antenna-to-antenna distance or a radio-path length.

Attributed locator: KP30 · 493 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,219 km (approx.)
Last such locator decoded: 2026-10-21 22:15 UTC

A decoded locator can describe portable, remote or special-event operation and is not proof of a permanent station address or transmitter identity.

Observed FT8 exchanges

S/N cells show: decoded at SO8OO / report transmitted by the counterpart. An observed exchange is not a QSL or an official logbook confirmation.

Time UTC	Band	OI5AY S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-23 13:32	10m	- / -	EA7Z	-9 / -	2	Partial capture
10-22 03:40	40m	- / -16	TO4A	+8 / -	2	Partial capture
10-21 22:15	160m	-2 / -	F1PBZ	- / -	2	Partial capture
10-21 03:45	80m	+8 / -	EC6DX	- / -	4	Partial capture
10-21 03:42	80m	0 / -	9A60CBM	- / -	2	Partial capture
10-18 03:40	40m	- / -17	IQ4JO	-13 / -	2	✓ Closing fragment
10-17 10:08	10m	- / -	EC5M	-5 / -	3	Partial capture
10-17 10:01	10m	- / -16	CT2KCK	-6 / -	4	Partial capture
10-14 14:47	40m	-6 / -12	PD1AC	-18 / -3	5	✓ Full exchange observed
10-14 14:47	40m	-4 / +2	UT7AXA	-2 / -	6	✓ Full exchange observed
10-14 14:46	40m	-7 / -	RV3F	-4 / -	4	✓ Full exchange observed
10-14 14:43	40m	-12 / 0	OZ9WRH	-20 / -	4	✓ Full exchange observed
10-14 11:06	40m	-22 / -	GM0MST	- / 0	2	Partial capture
10-14 11:05	40m	-18 / -	SP1550SK	- / -	2	Partial capture
10-14 11:02	40m	- / -8	DM5ME	-17 / -	3	✓ Closing fragment
10-14 11:00	40m	-21 / -	G7BTP	- / -7	3	✓ Closing fragment
10-14 10:16	40m	- / -8	OZ9FF	-10 / -	2	✓ Closing fragment
10-14 10:14	40m	-20 / -	PD0TH	- / -2	2	✓ Closing fragment
10-12 20:13	80m	+4 / +6	OH2BVT	-4 / -18	4	✓ Full exchange observed
10-12 20:12	80m	- / -	DJ3KS	-12 / -	3	Partial capture
10-12 20:11	80m	-1 / -5	9A3AUH	-6 / -4	5	✓ Full exchange observed
10-12 20:09	80m	0 / -10	DK8HC	0 / +1	8	✓ Full exchange observed
10-12 20:07	80m	- / -	DO1SWC	-8 / -	2	Partial capture
10-12 20:05	80m	- / -	SP1RKT	-3 / -	2	Partial capture
10-12 20:03	80m	- / -	DO1SWC	-5 / -	2	Partial capture
10-12 20:01	80m	+5 / -	OH6QU	+10 / +10	9	✓ Full exchange observed
10-12 20:00	80m	- / +5	UT5ECZ	0 / -	2	Partial capture
10-12 20:00	80m	- / +7	OK1CI	+4 / -	5	Partial capture
10-12 19:57	80m	- / +9	OH2BVT	0 / -	2	Partial capture
10-12 19:50	80m	-1 / +5	OH1TSM	+8 / 0	7	✓ Full exchange observed
10-12 19:48	80m	+4 / -	DB6LL/P	- / -	3	Partial capture
10-11 17:41	60m	-2 / -1	IK2UCK	-14 / -16	7	✓ Full exchange observed
10-11 17:41	60m	-1 / -5	HF5A	-4 / -22	4	✓ Full exchange observed
10-11 16:43	40m	- / -	RD3FY	0 / -	4	Partial capture
10-11 16:42	40m	- / +8	LY4Q	-1 / -	3	✓ Closing fragment
10-08 20:30	160m	-4 / -8	RQ7O	-5 / +3	6	✓ Full exchange observed
10-08 20:24	160m	-2 / -21	OE3OOG	+3 / -25	7	✓ Full exchange observed
10-08 20:24	160m	+2 / -4	R1CAA	-10 / +10	8	✓ Full exchange observed
10-08 20:22	160m	+2 / -3	DL7UKM	-12 / -9	6	✓ Full exchange observed
10-08 20:20	160m	- / -	OE3OOG	-2 / -	2	Partial capture
10-08 20:19	160m	0 / -20	F6AOJ	-4 / -11	8	✓ Full exchange observed
10-08 20:15	160m	-1 / -	EA3EDU	-14 / -25	4	✓ Closing observed
10-08 20:15	160m	- / -	DL7ET	-18 / -	5	Partial capture
10-08 20:13	160m	-2 / -	DL9UW	-16 / -15	8	✓ Closing observed
10-08 20:11	160m	-2 / -	SM0TGU	- / -12	2	✓ Closing fragment
10-08 20:08	160m	- / -	DL7ET	-14 / -	3	Partial capture
10-08 20:06	160m	+1 / -6	DO1YFF	-8 / -15	7	✓ Full exchange observed
10-08 20:06	160m	-2 / -14	RU4CK	-10 / -10	9	✓ Full exchange observed
10-08 20:04	160m	0 / -13	OM3PC	+11 / 0	6	✓ Full exchange observed
10-08 20:03	160m	-2 / -	SN4K	+2 / 0	4	✓ Closing observed

Recent FT8 messages decoded at SO8OO

Frequency values are decoder audio offsets in hertz, not RF frequencies.

10m

UTC    dB Audio  Message
100115  -2 2446  OI5AY CT2KCK IM59 (x4)
100815 -11 1185  OI5AY EC5M IM98 (x3)
133230  -6  897  OI5AY EA7Z IM67 (x2)
134115 -21 1915  OI5AY PT7PT HI03

40m

UTC    dB Audio  Message
144830 -19 1804  OI5AY PD1AC 73
144845  -4 1981  UT7AXA OI5AY +18
144900  -1 1926  OI5AY UT7AXA R+02
144915  -3 1981  UT7AXA OI5AY RR73
144930  -2 1925  OI5AY UT7AXA 73
034000 -16 2058  OI5AY IQ4JO R-17 (x2)
040015 -24 1894  PA/DL3IAS OI5AY KP30
040130  +9  831  OI5AY P4/WE9V -16
040245 -24 1894  PA/DL3IAS OI5AY R+11
040300  +8  831  OI5AY RR73; R4DI <...> +04
040400 -23 1894  YV6BXN OI5AY KP30
034030  +8  388  OI5AY TO4A -16 (x2)
034300  +7  388  OI5AY RR73; RD7LC <...> -10

160m

UTC    dB Audio  Message
202830  +3 2502  CQ OI5AY KP30
202845 -15 1557  OI5AY DL4RAQ JN58
202900  -3 2502  CQ OI5AY KP30 (x3)
203015  -3 2355  OI5AY RQ7O KN98
203030  -1 2502  RQ7O OI5AY +03
203045  -8 2355  OI5AY RQ7O R-08
203100  -3 2502  RQ7O OI5AY RR73
203115  -3 2355  OI5AY RQ7O 73
203130  -7 2503  RQ7O OI5AY 73
203200  -2 2502  CQ OI5AY KP30 (x2)
221515  -6 1902  F1PBZ OI5AY KP30 (x2)

80m

UTC    dB Audio  Message
201215  -4 2124  9A3AUH OI5AY RR73
201230 -19 1776  OI5AY DJ3KS JO30
201230  -7 2043  OI5AY 9A3AUH 73
201330  -6 1776  OI5AY DJ3KS JO30
201345  +1 2123  OH2BVT OI5AY KP30
201400  -4 1164  OI5AY OH2BVT +06
201400 -12 1776  OI5AY DJ3KS JO30
201415  +6 2124  OH2BVT OI5AY R-18
201430  -3 1164  OI5AY OH2BVT RR73
034245  +4 2014  9A60CBM OI5AY KP30 (x2)
034515  +5 2014  EC6DX OI5AY KP30 (x4)

60m

UTC    dB Audio  Message
190400  -4  744  OI5AY IT9VCE JM77
190430  -7 2536  OI5AY IU2VUD JN45
174030  -2 2234  CQ OI5AY KP30
174100  -1 2234  HF5A OI5AY -22
174115 -13 2234  OI5AY IK2UCK JN45
174115  -1 2750  OI5AY HF5A R-05
174130  -1 2234  HF5A OI5AY RR73
174145 -14 2234  OI5AY IK2UCK JN45
174145  -7 2750  OI5AY HF5A 73
174200  -5 2234  IK2UCK OI5AY -16
174215 -12 2235  OI5AY IK2UCK R-01
174230  -7 2234  IK2UCK OI5AY RR73
174245 -16 2235  OI5AY IK2UCK 73
174300  +6 2234  IK2UCK OI5AY 73
174645  +2 2334  H49A OI5AY KP30

20m

UTC    dB Audio  Message
150330  -6 1989  OI5AY UR5XEJ RR73
150330  +3 2656  OI5AY DL1R JN58
150430 -14 2077  OI5AY R9FDE/P LO86
150500 -24 1916  OI5AY HA3HZ JN96
150500  +4 2656  OI5AY DL1R JN58
150530 -10 2077  OI5AY R9FDE/P 73
150530 -18 1915  OI5AY HA3HZ JN96
150530  +6 2656  OI5AY DL1R JN58 (x3)
150900  -6 2611  OI5AY F6FTB JN27 (x2)
151600  -8 2022  OI5AY RA1QX KO99 (x3)

Decoder S/N history by band

Count-weighted daily averages across messages attributed to this profiled token and successfully decoded at SO8OO, limited to the rolling 90-day UTC chart window.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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