IV3SGJ — 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: JN65

Receiver-side FT8 activity involving IV3SGJ, decoded by SO8OO in southeastern Poland. 107 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 31 UTC dates in the available aggregate history. Observed between 2026-06-20 and 2026-10-23.

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 107 FT8 messages attributed to IV3SGJ as the transmitting token by decoded message structure across 31 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (50%), followed by 80 m (32%) and 20 m (10%). Most decodes (50%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (62%); the estimated median was -18 dB.

Overview

107

Messages attributed

UTC dates decoded

Active 15-min windows

-18 dB

Estimated median S/N

Bands

160m · 8 80m · 34 40m · 54 20m · 11

First attributed message: 2026-06-20
Last attributed message: 2026-10-23 16:44 UTC

Observed FT8 message patterns

Attributed sample: 107 messages
Active dates: 31 UTC dates
Estimated median S/N: -18 dB
Estimated 10th-90th percentile: -24 to -8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 66, moderate (-15 to -9 dB) 30, strong (≥ -8 dB) 11.

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 IV3SGJ in decoded directed-looking exchanges:

F5RRS · France DK7ZT · Fed. Rep. of Germany OK1DXR · Czech Republic SP7SEK · Poland DF0KK · Fed. Rep. of Germany G4DBW · England 9A1CCB · Croatia DL6UCK · Fed. Rep. of Germany F1FPM · France F5LMJ · France IU4DTV · Italy IV3JSC · 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 IV3SGJ

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: JN65 · 76 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 821 km (approx.)
Last such locator decoded: 2026-10-23 16:44 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	IV3SGJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-19 10:44	40m	- / +8	OE4BHF	-5 / -	2	✓ Closing fragment
10-19 10:39	40m	- / -8	F1PBZ	-4 / -	3	Partial capture
10-19 10:36	40m	- / -12	OE5WRO	-10 / -	2	✓ Closing fragment
10-16 02:30	160m	- / -22	DK7ZT	+2 / -	2	✓ Closing fragment
10-04 07:43	40m	- / -6	IV3JSC	-10 / -	3	✓ Closing fragment
10-03 08:02	40m	-24 / -6	9A1CCB	-6 / -	3	✓ Closing observed
10-03 07:32	40m	-20 / -	G6KHW	- / -	3	Partial capture
10-02 05:59	40m	-16 / -12	SP1MGM	-2 / -6	5	✓ Full exchange observed
10-02 05:59	40m	- / -12	SP4MPH	+8 / -	2	Partial capture
10-01 10:51	40m	-20 / -7	S53AK	-10 / +2	5	✓ Full exchange observed
09-28 20:47	40m	- / -5	OS4K	-17 / -	2	✓ Closing fragment
09-28 20:38	80m	- / -	DF5AH	-9 / -	3	Partial capture
09-13 18:48	160m	- / -20	OK1DXR	+2 / -	7	✓ Closing fragment
09-07 19:03	160m	- / -	YO2MTG	+3 / -	4	Partial capture
09-05 05:10	40m	- / -4	F1PBZ	-6 / -	3	Partial capture
09-05 05:10	40m	-16 / -17	UT5MB	-2 / -10	8	✓ Full exchange observed
08-30 19:37	20m	-8 / -1	G4DBW	+11 / -4	5	✓ Full exchange observed
08-30 19:32	40m	- / -20	G8OO	-9 / -	2	Partial capture
08-30 19:09	80m	-24 / -22	F4GTB	+4 / -	4	✓ Closing observed
08-06 20:41	80m	-20 / -12	IV3DSG	-8 / -2	3	✓ Full exchange observed
08-03 12:48	20m	- / -	DF0KK	-6 / -	3	✓ Closing fragment
07-31 05:20	40m	- / -2	DL6UCK	-20 / -	3	✓ Closing fragment
07-31 05:12	40m	- / -	DL6UCK	-9 / -	4	Partial capture
07-31 05:11	40m	- / -12	YO4NT	-12 / -	2	Partial capture
07-27 20:29	160m	- / -20	SP7SEK	+6 / -	6	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
191000 -24 1993  F4GTB IV3SGJ RR73
191015  +8 1993  IV3SGJ F4GTB 73
154000 -20 1993  CQ IV3SGJ JN65 (x2)
203845 -11 2540  IV3SGJ DF5AH JO41 (x3)
053215 -13 1994  IV3SGJ DO2NTC -19
183730 -16 1993  CQ IV3SGJ JN65 (x5)
153330 -12 1993  DK7ZT IV3SGJ JN65
164400  -6 1993  EB5CS IV3SGJ JN65

40m

UTC    dB Audio  Message
054300 -19 2030  GM6URC IV3SGJ R-19
065100 -15 2030  CQ IV3SGJ JN65
065145  -7 2086  IV3SGJ G0BLB IO81
065300 -16 2030  CQ IV3SGJ JN65 (x2)
065400 -12 2030  PA7D IV3SGJ -12
055500  -5 2030  IU0KNS IV3SGJ JN65
103615 -12 2030  IV3SGJ OE5WRO -12 (x2)
103945  -6 2788  IV3SGJ F1PBZ -08 (x3)
104445  -5 1293  IV3SGJ OE4BHF +08 (x2)
163600 -24 2030  EB5CS IV3SGJ JN65

160m

UTC    dB Audio  Message
190345  +5 1942  IV3SGJ YO2MTG KN05 (x3)
184815  +2 1295  IV3SGJ OK1DXR JO60 (x7)
195200 -17 1986  CQ IV3SGJ JN65 (x3)
023015  +2  824  IV3SGJ DK7ZT -22 (x2)

20m

UTC    dB Audio  Message
124815  -7  515  IV3SGJ DF0KK JO31 (x3)
074230 -18 2066  CQ IV3SGJ JN65
053100 -22 2070  TA3F IV3SGJ -15
193500 -13 2066  CQ IV3SGJ JN65 (x3)
193715  +8 2290  IV3SGJ G4DBW JO01
193730  -5 2067  G4DBW IV3SGJ -04
193745 +10 2290  IV3SGJ G4DBW R-01
193800 -10 2067  G4DBW IV3SGJ RR73
193815 +15 2290  IV3SGJ G4DBW 73

10m

UTC    dB Audio  Message
115645 -23 1789  IV3SGJ F5RRS 73

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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