IW4APB — 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: Italy Most frequent locator attributed to this token: JN45

Receiver-side FT8 activity involving IW4APB, decoded by SO8OO in southeastern Poland. 256 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 18 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-11-04.

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 256 FT8 messages attributed to IW4APB as the transmitting token by decoded message structure across 18 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (52%), followed by 40 m (23%) and 60 m (16%). Several six-hour UTC windows tied for the largest share (51%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

256

Messages attributed

UTC dates decoded

Active 15-min windows

-8 dB

Estimated median S/N

Bands

80m · 133 60m · 40 40m · 58 20m · 25

First attributed message: 2026-06-10
Last attributed message: 2026-11-04 17:23 UTC

Observed FT8 message patterns

Attributed sample: 256 messages
Active dates: 18 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -18 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 48, moderate (-15 to -9 dB) 73, strong (≥ -8 dB) 135.

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 IW4APB in decoded directed-looking exchanges:

DL0IPA · Fed. Rep. of Germany ×2 OR7K · Belgium DM8KM · Fed. Rep. of Germany F4IVG · France HA5VZ · Hungary HB9ELE · Switzerland II5GG · Italy IN3GHP · Italy IR8PR · Italy IV3JSC · Italy IV3XPP · Italy IW1ARE · Italy

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 IW4APB

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: JN45 · 119 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,075 km (approx.)
Last such locator decoded: 2026-11-04 17:23 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	IW4APB S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-04 17:23	80m	-23 / -	SV5BYP	-18 / -	2	✓ Closing observed
11-04 16:46	40m	-10 / -22	R9LY	-4 / -10	5	✓ Full exchange observed
10-30 17:11	80m	-8 / -	DL0IPA	-5 / +2	2	✓ Closing observed
10-30 17:03	80m	-4 / -	SP5DFK/QRP	- / +3	2	Partial capture
10-30 17:01	80m	-9 / -3	IW6CZF	-18 / -6	5	✓ Full exchange observed
10-30 17:00	80m	-6 / -	CT1EEX	- / -11	2	✓ Closing fragment
10-30 16:50	80m	-7 / +5	DL0AA	-4 / +3	7	✓ Full exchange observed
10-30 16:47	80m	-12 / -	DL0AA	- / -	2	Partial capture
10-30 16:39	80m	-4 / 0	DO2XB	+6 / +1	6	✓ Full exchange observed
10-30 16:37	80m	-11 / -	RK6OQ	- / -5	2	✓ Closing fragment
10-30 16:36	80m	-9 / -18	LY3BFH	+10 / -1	4	✓ Full exchange observed
10-30 16:32	80m	-19 / -	DL1DCT	- / +4	3	✓ Closing fragment
10-30 16:03	60m	-18 / -	DH3KR	- / -	2	Partial capture
10-30 15:48	60m	-17 / -15	DL0IPA	-8 / -5	5	✓ Full exchange observed
10-28 17:31	60m	-21 / +2	S57MPU	+6 / -	3	✓ Closing observed
10-28 17:23	60m	-18 / -14	SP1KYB	-15 / -7	5	✓ Full exchange observed
10-28 17:16	60m	-24 / -	EA3FN	- / -	2	✓ Closing fragment
10-28 17:01	60m	-20 / -12	DK6WH	-10 / -9	3	✓ Full exchange observed
10-28 16:59	60m	- / -9	OZ9FF	-2 / -	2	✓ Closing fragment
10-28 16:58	60m	-19 / -4	G4LMN	-10 / -	3	✓ Closing observed
10-28 16:56	60m	- / -6	IK0BAL	-4 / -	2	✓ Closing fragment
10-28 16:53	60m	- / +3	DF2OO	-12 / -	2	✓ Closing fragment
10-28 16:53	60m	-20 / -8	DJ3NJ	-4 / -	5	✓ Closing observed
10-28 16:48	60m	- / -	IK3VUT	-3 / -	2	✓ Closing fragment
10-23 20:22	80m	-5 / -17	RU3T	+13 / -1	6	Partial capture
10-18 20:40	80m	-4 / 0	F4EWK	-20 / +7	4	✓ Full exchange observed
10-18 20:35	80m	-7 / +6	DM3ER	-2 / -	4	Partial capture
10-18 20:32	80m	- / -21	IW4DVF	+2 / -	2	✓ Closing fragment
10-13 16:04	40m	-7 / -	DL8OH	- / -	2	Partial capture
10-13 16:02	40m	- / -9	SP5MXZ	-10 / -	2	✓ Closing fragment
10-13 15:45	40m	-7 / +7	HA5VZ	+7 / -	3	✓ Full exchange observed
10-13 15:38	40m	-6 / -8	DM8KM	+6 / -11	5	✓ Full exchange observed
10-13 15:34	40m	- / -2	ON4CJU	-7 / -	2	✓ Closing fragment
10-13 15:21	40m	-12 / -	PE1NAO	-15 / -	2	✓ Closing observed
10-13 15:14	40m	-13 / -	F4MWH	- / -	2	Partial capture
10-13 15:07	40m	-15 / -14	OE8DSK	-6 / +8	5	✓ Full exchange observed
10-13 14:58	40m	-4 / -9	YO3GJE	-13 / -6	5	✓ Full exchange observed
10-11 15:40	40m	-4 / -	IK3ZQY	- / -	3	Partial capture
10-11 15:25	40m	-5 / 0	IN3GHP	-11 / -	4	✓ Closing observed
10-11 15:22	40m	-1 / +7	HB9ELE	+2 / -	5	✓ Full exchange observed
10-11 15:14	40m	-4 / -	II5GG	-12 / -	6	✓ Full exchange observed
10-11 15:12	40m	-7 / -	IR8PR	- / +3	2	✓ Closing fragment
10-11 15:09	40m	-4 / -	IN3GHP	- / -	2	Partial capture
10-11 15:07	40m	-6 / +9	IV3JSC	-9 / -	4	✓ Closing observed
10-11 15:03	40m	-6 / -	IV3XPP	- / +9	3	✓ Closing fragment
10-11 14:36	40m	-12 / +8	IW1ARE	-10 / +4	6	✓ Full exchange observed
09-13 02:57	80m	-6 / 0	II0CDS	-18 / +5	4	✓ Full exchange observed
09-10 01:22	80m	-8 / -	SQ100PKP	- / +1	2	Partial capture
09-10 01:15	80m	-20 / -	UN7LAN	- / -	3	Partial capture
09-10 01:10	80m	-15 / -7	M0LOW	-14 / -17	7	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
170045  -6 1231  CT1EEX IW4APB 73
170115 -12 1231  IW6CZF IW4APB JN45
170130 -18 2114  IW4APB IW6CZF -03
170145  -5 1231  IW6CZF IW4APB R-06
170200 -17 2114  IW4APB IW6CZF RR73
170215  -9 1231  IW6CZF IW4APB 73
170315  -2 1231  SP5DFK/QRP IW4APB JN45
170330 +11 2424  IW4APB YU65AEC -01
170345  -7 1231  SP5DFK/QRP IW4APB R+03
170400  +6 2424  IW4APB RR73; DO2KMB <...> -02
170700  -6 1231  DL0IPA IW4APB JN45 (x2)
171115  -5 1618  IW4APB DL0IPA RR73
172345 -23  912  SV5BYP IW4APB JN45
172430 -18 1022  IW4APB SV5BYP RR73

40m

UTC    dB Audio  Message
154000  +9 3056  IW4APB DM8KM RR73
154015  -4  913  DM8KM IW4APB 73
154545  +7 2600  IW4APB HA5VZ +07
154600  -7  913  HA5VZ IW4APB R+15
154615  +7 2600  IW4APB HA5VZ RR73
155415 -14 1544  IW4APB F4IVG RR73
160230 -11 2334  IW4APB SP5MXZ -09 (x2)
160445  -6  743  DL8OH IW4APB JN45 (x2)
164615  -9 1941  R9LY IW4APB JN45
164630  -4 2356  IW4APB R9LY -22 (x3)
164815 -10 1942  R9LY IW4APB R-10

60m

UTC    dB Audio  Message
172315 -21 1465  SP1KYB IW4APB JN45
172400 -14 1599  IW4APB SP1KYB -14
172415 -19 1464  SP1KYB IW4APB R-07
172430 -16 1599  IW4APB SP1KYB RR73
172445 -15 1464  SP1KYB IW4APB 73
173130  +5 2512  IW4APB S57MPU +02 (x2)
173215 -21 1465  S57MPU IW4APB 73
154830 -21 1139  DL0IPA IW4APB JN45
154845  -8 1437  IW4APB DL0IPA -15
154900 -15 1139  DL0IPA IW4APB R-05
154915  -8 1437  IW4APB DL0IPA RR73
154930 -15 1139  DL0IPA IW4APB 73
160315 -19 1640  DH3KR IW4APB JN45 (x2)

160m

UTC    dB Audio  Message
005530  -2 1995  IW4APB OR7K -12 (x2)

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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