IW4DVF — 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: JN54

Receiver-side FT8 activity involving IW4DVF, decoded by SO8OO in southeastern Poland. 353 FT8 messages attributed to this token as transmitter, on 160m, 80m, 10m, across 6 UTC dates in the available aggregate history. Observed between 2026-07-25 and 2026-11-01.

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 353 FT8 messages attributed to IW4DVF as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (62%), followed by 10 m (24%) and 160 m (14%). Several six-hour UTC windows tied for the largest share (76%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (61%); the estimated median was -2 dB.

Overview

353

Messages attributed

UTC dates decoded

Active 15-min windows

-2 dB

Estimated median S/N

Bands

160m · 49 80m · 220 10m · 84

First attributed message: 2026-07-25
Last attributed message: 2026-11-01 23:24 UTC

Observed FT8 message patterns

Attributed sample: 353 messages
Active dates: 6 UTC dates
Estimated median S/N: -2 dB
Estimated 10th-90th percentile: -17 to +7 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 66, moderate (-15 to -9 dB) 71, strong (≥ -8 dB) 216.

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 IW4DVF in decoded directed-looking exchanges:

SV1DZB · Greece ×3 DO1OAS · Fed. Rep. of Germany ×2 9A4ZM · Croatia DD7EE · Fed. Rep. of Germany DK7ZT · Fed. Rep. of Germany IK4OLQ · Italy IZ7NLJ · Italy OK1CI · Czech Republic OM2WQ · Slovak Republic OM2WW · Slovak Republic SP5GEO · Poland 2E0FHM · England

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 IW4DVF

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: JN54 · 229 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,013 km (approx.)
Last such locator decoded: 2026-11-01 23:24 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	IW4DVF S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-01 23:25	80m	- / -	DA6OOM	-12 / -	3	Partial capture
11-01 23:18	80m	+8 / -	RN6HK	- / -4	2	✓ Closing fragment
11-01 23:18	80m	- / -13	S55P	-6 / -	6	Partial capture
11-01 23:07	80m	+6 / -	DL1HDL	- / -6	6	✓ Closing fragment
11-01 23:06	80m	- / -	9A3AUH	+5 / -	12	Partial capture
11-01 23:05	80m	- / -	UA3IAP	-1 / -	9	Partial capture
11-01 23:04	80m	+8 / -	TA1MB	-16 / -21	3	✓ Closing observed
11-01 23:02	80m	+6 / -	IZ1HJU	- / -17	3	✓ Closing fragment
11-01 23:00	80m	+6 / -	IU5HIU	-3 / -19	3	✓ Closing observed
11-01 23:00	80m	- / -	DL1BBO	-14 / -	2	Partial capture
11-01 22:58	80m	- / -	9A3AUH	+2 / -	11	Partial capture
11-01 22:58	80m	+5 / +4	DO5RRS	-2 / -	3	✓ Closing observed
11-01 22:54	80m	+4 / +4	F1HSY	-14 / -9	4	✓ Full exchange observed
11-01 22:49	80m	- / -	DO5PY	-4 / -	6	Partial capture
11-01 22:49	80m	0 / -6	SQ5JRE	+5 / -15	3	✓ Full exchange observed
11-01 22:41	80m	+4 / -	TA1MB	- / -17	2	Partial capture
11-01 22:39	80m	- / -	DA6SL	+1 / -	3	Partial capture
11-01 22:38	80m	+5 / -	OZ5AGJ	-6 / -22	6	✓ Closing observed
11-01 22:36	80m	+2 / +6	DO1OAS	-4 / -16	7	✓ Full exchange observed
11-01 22:35	80m	+6 / +6	IK4TVP	+1 / -	3	✓ Closing observed
11-01 22:33	80m	+8 / -2	OE5RYM	+2 / -3	4	✓ Full exchange observed
11-01 22:32	80m	+8 / -2	DK0PRL	+6 / -9	5	✓ Full exchange observed
11-01 22:29	80m	-5 / -	TA1MB	- / -24	6	Partial capture
11-01 22:26	80m	-18 / -	SP5JMA	-3 / -22	2	Partial capture
10-18 20:45	80m	- / -	OH2FQV	-5 / -	2	Partial capture
10-18 20:39	80m	- / -20	RX3ASQ	-16 / -	3	✓ Closing fragment
10-18 20:32	80m	+2 / -	IW4APB	- / -21	2	✓ Closing fragment
10-17 21:44	80m	-2 / +3	SP3HUU	+10 / +2	5	✓ Full exchange observed
10-17 21:36	80m	-2 / -4	SP6FME	+13 / -1	7	✓ Full exchange observed
10-17 21:36	80m	+2 / -	UT1US	+10 / +3	4	✓ Closing observed
10-17 21:29	80m	-3 / -13	SV1DZB	-19 / -	3	✓ Closing observed
10-17 21:23	80m	-3 / +1	DO1OAS	0 / -19	12	✓ Full exchange observed
10-17 21:19	80m	- / -	DJ1TU	0 / -	3	Partial capture
10-17 21:18	80m	-2 / -	R1BNG/P	+3 / -3	2	Partial capture
10-17 21:11	80m	+7 / -	IK2HNG	- / -4	2	✓ Closing fragment
10-17 21:09	80m	- / -	DA6WA	-18 / -	4	Partial capture
10-17 21:05	80m	+3 / -	SV1DZB	- / -21	2	✓ Closing fragment
10-17 21:02	80m	- / -	OZ5AGJ	-8 / -	2	Partial capture
10-17 21:00	80m	-1 / +8	DL9PN	-15 / -20	5	✓ Full exchange observed
10-17 21:00	80m	- / -	YL2GJX	-10 / -	2	Partial capture
10-17 20:25	80m	-1 / -	OZ6HR	+12 / -7	4	✓ Full exchange observed
10-17 20:25	80m	- / -	DD8BA	+4 / -	5	Partial capture
10-17 20:24	80m	+2 / -10	2E0FHM	-8 / -21	6	✓ Full exchange observed
10-17 20:24	80m	- / -	DG4BZ	-6 / -	2	Partial capture
10-17 20:24	80m	- / -	DO7MEW	-11 / -	2	Partial capture
10-17 20:22	80m	- / -	DK8HC	0 / -	5	Partial capture
10-17 20:22	80m	- / -	RD9U	-7 / -	4	Partial capture
10-17 20:18	80m	- / -6	DO2HC	-3 / -	7	✓ Closing fragment
10-17 20:11	160m	-22 / -	IZ2ZSF	- / -	2	Partial capture
10-17 20:09	160m	-22 / -	IZ7NLJ	-7 / -	2	✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
232015  +4 1292  CQ IW4DVF JN54 (x2)
232100 -10  494  IW4DVF S55P -13
232115  +6 1292  CQ IW4DVF JN54 (x7)
232430  -9  494  IW4DVF S55P -06
232445  +7 1292  CQ IW4DVF JN54
232500 -14 1292  IW4DVF DA6OOM JO53 (x3)

160m

UTC    dB Audio  Message
195045 -22 1360  Z35Z IW4DVF JN54
195130 -11 1360  IW4DVF IK4OLQ +01 (x2)
195230  -5  823  IW4DVF DK7ZT -20 (x3)
195445 -24 1359  CQ IW4DVF JN54                        a1 (x3)
195915 -23 1360  IZ2ZSF IW4DVF JN54 (x2)
200915 -22 1358  IZ7NLJ IW4DVF JN54
201000  -7 1112  IW4DVF IZ7NLJ RR73
201115 -24 1358  IZ2ZSF IW4DVF JN54 (x2)

60m

UTC    dB Audio  Message
200745 -12 2280  IW4DVF PI4TX JO22 (x3)
200900  +0  638  IW4DVF G0AZH IO83 (x11)
201600  -4  717  IW4DVF G3UHU IO80

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

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee