IK3CHK — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Italy Most frequent locator attributed to this token: JN55

Receiver-side FT8 activity involving IK3CHK, decoded by SO8OO in southeastern Poland. 277 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 22 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-09-20.

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 277 FT8 messages attributed to IK3CHK as the transmitting token by decoded message structure across 22 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (59%), followed by 80 m (13%) and 10 m (13%). Several six-hour UTC windows tied for the largest share (52%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (75%); the estimated median was 0 dB.

Overview

277

Messages attributed

UTC dates decoded

Active 15-min windows

0 dB

Estimated median S/N

Bands

160m · 10 80m · 36 40m · 32 20m · 163 10m · 36

First attributed message: 2026-06-08
Last attributed message: 2026-09-20 00:08 UTC

Observed FT8 message patterns

Attributed sample: 277 messages
Active dates: 22 UTC dates
Estimated median S/N: 0 dB
Estimated 10th-90th percentile: -13 to +14 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 19, moderate (-15 to -9 dB) 49, strong (≥ -8 dB) 209.

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 IK3CHK in decoded directed-looking exchanges:

R2EA/P · European Russia ×2 EA1IOK · Spain IZ8PPI · Italy R7OV · European Russia RA3TOS · European Russia RA3WEO · European Russia RY3DAD · European Russia UA9SAV · Asiatic Russia UB8CSJ · Asiatic Russia PE9JAN · Netherlands R1AV · European Russia R1WCK · European Russia

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 IK3CHK

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: JN55 · 175 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 945 km (approx.)
Last such locator decoded: 2026-09-19 23:49 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	IK3CHK S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 00:07	80m	+17 / -	RI1FJZ	- / -18	3	Partial capture
09-19 23:46	160m	-10 / -	RI1FJZ	- / -	7	Partial capture
09-19 23:25	160m	-17 / -	RI1FJZ	- / -	3	Partial capture
09-19 23:07	80m	+20 / -	RI1FJZ	- / -16	14	Partial capture
09-19 23:02	80m	+18 / -	RI1FJZ	- / -16	5	Partial capture
09-19 22:49	80m	+10 / -	RI1FJZ	- / -25	14	Partial capture
09-13 18:30	40m	+12 / -	SQ100PKP	- / +9	3	Partial capture
08-07 14:18	20m	0 / -	UF4S/6	- / -	2	Partial capture
08-05 10:57	20m	-3 / -	<...>	- / -6	2	Partial capture
08-05 09:56	20m	- / -16	YO1BRANCUSI	-18 / -	2	Partial capture
08-05 09:46	20m	-15 / -	<...>	- / -6	17	Partial capture
08-04 08:47	20m	-15 / -	JE3GRQ	- / -	3	Partial capture
08-04 08:39	20m	-10 / -	<...>	- / -	9	Partial capture
07-29 17:40	20m	+8 / -	<...>	- / -	5	Partial capture
07-29 08:38	20m	-5 / -	R2EA/P	- / -12	4	Partial capture
07-23 18:55	40m	-2 / -	ZL1VAH	- / -19	2	✓ Closing fragment
07-19 11:58	10m	+7 / -	EA1IOK	- / -13	2	✓ Closing fragment
07-19 11:56	10m	+6 / -	IZ8PPI	- / -25	3	✓ Closing fragment
07-19 11:53	10m	+8 / -	UB8CSJ	- / -15	4	✓ Closing fragment
07-19 11:51	10m	+9 / -	UA9SAV	- / -9	2	✓ Closing fragment
07-19 11:48	10m	+8 / -	RA3WEO	- / -7	3	✓ Closing fragment
07-19 11:47	10m	+7 / -	YC2OEI	- / -25	2	Partial capture
07-19 11:46	10m	+8 / -	UA4FEN	- / -24	2	Partial capture
07-19 11:43	10m	+4 / -	RY3DAD	- / -7	3	✓ Closing fragment
07-19 11:42	10m	+8 / -	RA3TOS	- / -24	2	✓ Closing fragment
07-19 11:38	10m	+8 / +6	R7OV	-18 / -21	4	✓ Full exchange observed
07-19 11:37	10m	+8 / -	T22TT	- / -	2	Partial capture
07-16 11:46	20m	-5 / -	ON1JP	- / -15	2	Partial capture
07-16 11:44	20m	-6 / -	R1AV	- / 0	2	✓ Closing fragment
07-16 07:33	20m	-7 / -	<...>	- / -23	7	Partial capture
07-15 11:30	20m	-2 / -	RA3SO	- / -13	6	Partial capture
07-15 11:00	20m	-9 / -	RD4HX	- / -18	7	Partial capture
07-14 11:03	20m	+1 / -	<...>	- / -12	2	Partial capture
07-08 17:27	20m	-2 / -	R9FDE	- / -	2	Partial capture
07-02 17:42	40m	0 / -	UA8L/M	- / -	8	Partial capture
07-02 17:38	40m	-13 / -	UA8L/M	- / -	3	Partial capture
07-02 17:30	40m	-10 / -	<...>	- / -	12	Partial capture
06-30 13:52	20m	-9 / -	R2EA/P	- / -8	5	✓ Closing fragment
06-27 17:35	40m	-12 / -	VJ6X	- / -16	3	Partial capture
06-25 08:41	20m	0 / -	R2EA/P	- / -	24	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
230815 +24  375  RI1FJZ IK3CHK R-16 (x15)

160m

UTC    dB Audio  Message
232515 -17 1874  RI1FJZ IK3CHK JN55 (x10)

40m

UTC    dB Audio  Message
174145  +3 2222  <...> IK3CHK JN55
174245  +6 2267  UA8L/M IK3CHK JN55 (x8)
185500  +1 1828  ZL1VAH IK3CHK R-19 (x2)
183045 +10 1408  SQ100PKP IK3CHK JN55 (x3)
183200 +10 2838  IK3CHK RR73; UA6F <...> +02

20m

UTC    dB Audio  Message
095215 -19 2154  <...> IK3CHK JN55 (x3)
095600 -16 2089  IK3CHK YO1BRANCUSI -16
095615 -11 1864  <...> IK3CHK JN55
095630 -19 2089  IK3CHK YO1BRANCUSI -03
095645  -6 1864  <...> IK3CHK R-06 (x6)
141845  -2 1225  UF4S/6 IK3CHK JN55 (x2)
141945  +4 1378  <...> IK3CHK R-05

10m

UTC    dB Audio  Message
114900 +10 1454  RA3WEO IK3CHK 73
114930 +10 1454  DO9BAU IK3CHK +05
115100  +8 1454  UA4FKT IK3CHK -15
115130 +10 1454  UA9SAV IK3CHK -09 (x2)
115330  +6 1455  UB8CSJ IK3CHK JN55 (x4)
115630  +3 1455  IZ8PPI IK3CHK R-25 (x3)
115800  +5 1208  EA1IOK IK3CHK -13 (x2)
115900 +10 1209  UA4FKT IK3CHK -16

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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