IQ4FJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Italy Most frequent locator attributed to this token: JN54

Receiver-side FT8 activity involving IQ4FJ, decoded by SO8OO in southeastern Poland. 3,422 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 22 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-06-27.

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 3,422 FT8 messages attributed to IQ4FJ as the transmitting token by decoded message structure across 22 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (53%), followed by 20 m (21%) and 80 m (13%). The busiest six-hour window was 16:00-22:00 UTC, containing 45% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (61%); the estimated median was -7 dB.

Overview

3,422

Messages attributed

UTC dates decoded

291

Active 15-min windows

-7 dB

Estimated median S/N

Bands

80m · 439 60m · 386 40m · 1,797 20m · 730 10m · 70

First attributed message: 2026-06-06
Last attributed message: 2026-06-27 15:24 UTC

Observed FT8 message patterns

Attributed sample: 3,422 messages
Active dates: 22 UTC dates
Estimated median S/N: -7 dB
Estimated 10th-90th percentile: -14.7 to +3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 220, moderate (-15 to -9 dB) 1,131, strong (≥ -8 dB) 2,071.

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 IQ4FJ in decoded directed-looking exchanges:

G1ZHD · England ×6 SQ9EJ · Poland ×5 IZ7DOK · Italy ×5 ES6DO · Estonia ×5 DK2FM · Fed. Rep. of Germany ×5 LZ1UX · Bulgaria ×5 OM4KK · Slovak Republic ×4 PD2ET · Netherlands ×4 IK7QMJ · Italy ×4 IT9KMN · Sicily ×4 OK1FHI · Czech Republic ×3 F4PAN · France ×3

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 IQ4FJ

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 · 1,472 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,013 km (approx.)
Last such locator decoded: 2026-06-27 15:24 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	IQ4FJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
06-27 15:21	20m	-4 / -	M6MHG	- / -4	4	✓ Closing fragment
06-27 15:18	20m	-2 / -	SP3OKJ	- / -19	2	✓ Closing fragment
06-27 15:17	20m	-4 / -	RI0SP	- / +1	2	✓ Closing fragment
06-27 15:06	20m	- / +2	SV7BAY	-7 / -	3	✓ Closing fragment
06-27 14:54	20m	- / -	SV5BYP	-14 / -	2	✓ Closing fragment
06-27 14:53	20m	- / -	DB7BH	-24 / -	2	Partial capture
06-26 14:50	20m	-9 / -	DK1VK	+2 / -	3	✓ Closing observed
06-26 14:43	20m	-6 / -	R6LKG	- / -3	2	✓ Closing fragment
06-26 14:39	20m	-10 / -	HA7KPI	- / -11	2	Partial capture
06-26 14:38	20m	-7 / 0	F5JAE	-6 / -	4	✓ Closing observed
06-26 14:37	20m	-8 / -	K4YT	- / -13	2	Partial capture
06-26 14:31	20m	-2 / -	DF2JK	- / -10	2	✓ Closing fragment
06-26 14:29	20m	-1 / -	DL1YFS	-17 / -	4	✓ Closing observed
06-26 14:28	20m	-4 / -	PD3PAM	- / -12	2	✓ Closing fragment
06-26 14:27	20m	0 / -	PD1HBL	- / -10	4	✓ Closing fragment
06-26 11:29	20m	-16 / -	PD1HBL	- / -19	5	Partial capture
06-26 11:26	20m	-12 / -	TA3F	- / -13	2	✓ Closing fragment
06-25 19:19	20m	-7 / -	IT9JNN	- / -	2	✓ Closing fragment
06-25 19:14	20m	-8 / -	RX9WM	- / -5	4	Partial capture
06-25 19:04	20m	-7 / -23	IU1CYA	-1 / -2	5	✓ Full exchange observed
06-25 17:52	20m	-12 / -	SP9Y	- / -10	2	Partial capture
06-25 17:36	20m	-12 / -	SP9Y	- / -10	4	Partial capture
06-25 17:27	20m	-10 / +1	OK1ACE	-3 / -	6	✓ Closing observed
06-25 17:24	20m	-13 / -18	S55A	-8 / -7	3	✓ Full exchange observed
06-25 17:15	20m	-14 / -10	DJ3WF	-16 / -16	6	✓ Full exchange observed
06-25 17:14	20m	- / -	IZ1NGZ	-12 / -	2	Partial capture
06-25 17:14	20m	- / -9	ON7AN	-10 / -	2	Partial capture
06-25 17:07	20m	-12 / -	DG7LL	-10 / -13	3	Partial capture
06-25 17:07	20m	- / -	GJ0KYZ	-4 / -	4	Partial capture
06-25 17:06	20m	-10 / -15	IW4DV	+5 / -	3	✓ Closing observed
06-25 17:02	20m	- / -18	PD2ET	-11 / -	3	✓ Closing fragment
06-25 17:01	20m	-10 / -	SP9XCC	- / -9	2	✓ Closing fragment
06-25 17:00	20m	- / -	IW4DV	+4 / -	6	Partial capture
06-25 16:51	20m	-12 / -6	IK4LDS	+4 / -	3	✓ Closing observed
06-25 16:50	20m	- / -	PD3PAM	-7 / -	8	Partial capture
06-25 16:17	20m	- / -9	DL6ZBD	-6 / -	5	✓ Closing fragment
06-25 16:08	20m	- / -	PD3PAM	-6 / -	5	Partial capture
06-25 15:55	20m	- / -7	DJ1TU	-12 / -	2	✓ Closing fragment
06-25 15:53	20m	-12 / -	DK3TNA	-19 / -6	2	✓ Closing observed
06-25 15:19	20m	-16 / -7	ON3ZEP	-18 / -5	3	✓ Full exchange observed
06-25 15:13	20m	-11 / -	PD9JPV	- / -18	3	Partial capture
06-25 14:09	10m	- / -7	UR4QWW	-2 / -	2	Partial capture
06-25 14:03	10m	- / -	US6CQ	-13 / -	3	✓ Closing fragment
06-24 19:59	40m	-2 / -	IK7QMJ	-6 / +10	4	✓ Full exchange observed
06-24 19:59	40m	0 / -	RU3XW	- / -9	3	✓ Closing fragment
06-24 19:57	40m	0 / -	F1HUM	- / +3	2	✓ Closing fragment
06-24 19:56	40m	+2 / -	M0PEL	- / -3	2	✓ Closing fragment
06-24 19:54	40m	+4 / -	LZ1UX	+2 / +3	3	✓ Closing observed
06-24 19:53	40m	+2 / -	IK3ORD	- / +3	2	✓ Closing fragment
06-24 19:52	40m	0 / -16	DG4FFF	-9 / -5	3	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
151700  +0 2747  RI0SP IQ4FJ R+01 (x2)
151800  -4 2748  CQ IQ4FJ JN54
151830  -3 2747  SP3OKJ IQ4FJ -19 (x2)
151930  -2 2748  CQ IQ4FJ JN54
152100  -5 2748  M6MHG IQ4FJ -04 (x4)
152300  +2 2758  CQ IQ4FJ JN54 (x3)
152430  -7 2758  DL9PN IQ4FJ -03
155415 -12 1633  IQ4FJ IU2VWQ JN45

10m

UTC    dB Audio  Message
104115 +12  410  IQ4FJ PD2WL RR73
104130  +3  410  PD2WL IQ4FJ 73
104200  -2  409  CQ IQ4FJ JN54 (x2)
104300  -3  409  SP5MXW IQ4FJ +01 (x2)
104600  +6  409  4Z4DX IQ4FJ -10 (x2)
104700  +1  409  IQ4FJ QRT TU
140245  -8 2678  IQ4FJ PD0HLA +04
140345 -15 2325  IQ4FJ US6CQ KN69 (x3)
140915  -2 1865  IQ4FJ UR4QWW KN77 (x2)

40m

UTC    dB Audio  Message
195600  +0  327  CQ IQ4FJ JN54
195630  +1  326  M0PEL IQ4FJ -03 (x2)
195730  -1  326  F1HUM IQ4FJ +03 (x2)
195830  +1  327  CQ IQ4FJ JN54
195900  +0  327  RU3XW IQ4FJ -09 (x2)
195945  -6  326  IQ4FJ IK7QMJ JN80
200000  -1  327  RU3XW IQ4FJ RR73
200030  -2  327  IK7QMJ IQ4FJ +10
200045  -7  326  IQ4FJ IK7QMJ R+13
200100  -1  327  IK7QMJ IQ4FJ RR73
200130  +0  327  CQ IQ4FJ JN54
200200  -4  327  IQ4FJ QRT TU

80m

UTC    dB Audio  Message
212630  +2 1815  IQ4FJ YO8VV KN36
212630  +6 2245  IQ4FJ RK3AQ R-22
212645  +3  724  RK3AQ IQ4FJ RR73
212700  +9 2245  IQ4FJ RK3AQ 73
212715  +3  724  E75D IQ4FJ R-13
212745  -2  724  YO8VV IQ4FJ -08
212815  +0  724  CQ IQ4FJ JN54
212845  +5  724  DO7SAM IQ4FJ -14
212900 -14  724  IQ4FJ DO7SAM R-05
212915  +3  724  DO7SAM IQ4FJ RR73
212930 -12  724  IQ4FJ DO7SAM 73
212945  -2  724  CQ IQ4FJ JN54 (x2)
213200 -15  724  IQ4FJ DO7SAM JO42 (x2)

60m

UTC    dB Audio  Message
203400  +2  565  CQ IQ4FJ JN54 (x2)
203530  -1  565  IU2VWQ IQ4FJ +02
203545 -18 1602  IQ4FJ IU2VWQ R+19
203600  +4  565  IU2VWQ IQ4FJ RR73
203615 -17 1602  IQ4FJ IU2VWQ 73
203630  +4  564  CQ IQ4FJ JN54
203645  -8 1909  IQ4FJ SP8BJU -01
203700  +6  565  SP8BJU IQ4FJ R+00
203715  -7 1909  IQ4FJ SP8BJU RR73
203730  +5  565  SP8BJU IQ4FJ 73
203800  +4  565  CQ IQ4FJ JN54 (x4)

160m

UTC    dB Audio  Message
191300  -6 2000  IQ4FJ ES2AJ KO29 (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.

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