SQ6NDC — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: JO81

Receiver-side FT8 activity involving SQ6NDC, decoded by SO8OO in southeastern Poland. 231 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 9 UTC dates in the available aggregate history. Observed between 2026-06-15 and 2026-09-19.

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 231 FT8 messages attributed to SQ6NDC as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (76%), followed by 20 m (12%) and 80 m (12%). Most decodes (65%) fell within the six-hour window 10:00-16:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (61%); the estimated median was -4.6 dB.

Overview

231

Messages attributed

UTC dates decoded

Active 15-min windows

-4.6 dB

Estimated median S/N

Bands

80m · 27 40m · 176 20m · 28

First attributed message: 2026-06-15
Last attributed message: 2026-09-19 10:56 UTC

Observed FT8 message patterns

Attributed sample: 231 messages
Active dates: 9 UTC dates
Estimated median S/N: -4.6 dB
Estimated 10th-90th percentile: -19 to +4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 50, moderate (-15 to -9 dB) 41, strong (≥ -8 dB) 140.

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 SQ6NDC in decoded directed-looking exchanges:

F1PBZ · France ×2 F4FSY · France ×2 RN6MA · European Russia ×2 F1IQH · France ×2 9A3K · Croatia DG1KHN · Fed. Rep. of Germany DJ3HW · Fed. Rep. of Germany DL3MIB · Fed. Rep. of Germany DN9OPA · Fed. Rep. of Germany EA3CU · Spain EA3NY · Spain ES2AJ · Estonia

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 SQ6NDC

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: JO81 · 109 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 379 km (approx.)
Last such locator decoded: 2026-09-19 10:56 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	SQ6NDC S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-19 10:54	40m	+2 / -	ON1DGN	- / -5	2	✓ Closing fragment
09-19 10:52	40m	0 / -	LY2EW	-15 / +9	5	✓ Full exchange observed
09-19 10:51	40m	0 / -	DJ9MA	- / -3	2	✓ Closing fragment
09-19 10:49	40m	+2 / -	F1IQH	- / -7	3	✓ Closing fragment
09-19 10:47	40m	+5 / -10	DJ4WM	-6 / -	5	✓ Full exchange observed
09-19 10:46	40m	+4 / -	SQ4GXN	- / -1	2	✓ Closing fragment
09-19 10:44	40m	0 / -	OS4K	- / -11	2	✓ Closing fragment
09-19 10:43	40m	-2 / -2	SP2KW	-15 / -	4	✓ Full exchange observed
08-16 21:21	10m	- / -	PA1GLD	-8 / -	2	Partial capture
08-16 21:09	10m	- / -	PA1GLD	-11 / -	3	✓ Closing fragment
08-16 04:52	40m	- / -	PC2J	-16 / -	2	✓ Closing fragment
08-16 03:48	40m	- / -16	CR7BRV	-9 / -	2	✓ Closing fragment
08-09 14:15	20m	- / -5	YU7DES	-9 / -	2	✓ Closing fragment
08-09 14:12	20m	- / -11	YU7XL	-5 / -	2	✓ Closing fragment
08-09 14:09	20m	- / -	YU7DES	-10 / -	2	✓ Closing fragment
08-09 13:58	20m	- / -10	DK3HV	-16 / -	3	✓ Closing fragment
08-09 03:53	40m	-16 / -	RN6MA	- / -5	2	✓ Closing fragment
08-09 03:46	40m	- / -6	R7DX	+4 / -	4	✓ Closing fragment
08-09 03:44	80m	-6 / -	DO1FFO	- / +4	2	✓ Closing fragment
08-09 03:40	80m	+2 / -1	SP1ZMO	0 / +1	7	Partial capture
08-09 03:38	80m	-3 / -	K4YT	-12 / -3	6	Partial capture
08-09 03:37	80m	-2 / -	DO5PY	-9 / -2	4	✓ Full exchange observed
08-02 14:09	20m	- / -19	RU3QR	-19 / -	3	Partial capture
07-29 20:06	20m	- / -11	IW2DNI	+2 / -	3	Partial capture
07-29 16:37	10m	- / -13	Z61DX	-10 / -	2	✓ Closing fragment
07-28 17:31	20m	- / -	PD4FL	-12 / -	2	Partial capture
07-26 08:40	20m	- / -4	DL2JB	+8 / -	3	✓ Closing fragment
07-25 16:53	40m	-3 / -	SP5ETF	- / -25	2	✓ Closing fragment
07-25 16:52	20m	- / -	DK4BP	-18 / -	7	Partial capture
07-25 16:52	40m	-6 / -	SP7PMO	- / -12	2	✓ Closing fragment
07-25 16:18	10m	- / -9	RK6OQ	-13 / -	2	Partial capture
07-25 10:02	10m	- / -16	DL3MIB	-13 / -	4	✓ Closing fragment
07-25 10:01	10m	- / -9	PE1LYU	-7 / -	2	✓ Closing fragment
07-25 09:34	10m	- / -16	F1PBZ	+2 / -	2	Partial capture
07-25 09:28	10m	- / -	F5CUN	-3 / -	7	Partial capture
07-25 08:58	10m	- / -5	SV1EKI	-17 / -	2	✓ Closing fragment
07-25 04:56	20m	- / -	OD5KU	-3 / -	3	Partial capture
07-25 04:53	20m	-5 / -15	OE5WRO	-12 / -4	4	Partial capture
07-25 04:47	20m	- / -	F4LNM	-12 / -	3	✓ Closing fragment
07-25 04:46	20m	- / -	OD5KU	+5 / -	4	Partial capture
07-25 04:42	20m	- / -9	DL3HBF	-4 / -	4	✓ Closing fragment
07-25 04:38	20m	- / +5	LX1TI	+1 / -	2	✓ Closing fragment
07-25 04:18	20m	- / -15	PD0DEX	-18 / -	3	✓ Closing fragment
07-25 03:06	20m	- / -19	EX8QD	-18 / -	2	✓ Closing fragment
07-24 18:05	20m	- / -8	UA9SY	-14 / -	2	Partial capture
07-22 19:39	20m	- / -	PA2KV	-19 / -	2	✓ Closing fragment
07-22 19:30	20m	- / -3	F5RRS	-9 / -	3	✓ Closing fragment
07-22 19:00	10m	- / -8	DG1KHN	-16 / -	2	✓ Closing fragment
07-22 18:59	10m	- / +2	PD1WAT	-16 / -	2	Partial capture
07-19 15:33	40m	-18 / -	SP2HJN	- / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
105100  +2 1130  DJ9MA SQ6NDC -03 (x2)
105200  +0 1129  CQ SQ6NDC JO81
105215 -15 1851  SQ6NDC LY2EW KO25
105230  +0 1129  LY2EW SQ6NDC +09
105245 -15 1851  SQ6NDC LY2EW R+23
105300  +0 1129  LY2EW SQ6NDC RR73
105315 -16 1851  SQ6NDC LY2EW 73
105330  -5 1129  CQ SQ6NDC JO81
105400  +2 1129  ON1DGN SQ6NDC R-05 (x2)
105500  +1 1129  CQ SQ6NDC JO81 (x4)

10m

UTC    dB Audio  Message
100445 -20 2102  SQ6NDC DO6KDS JO30
114415  -1  673  SQ6NDC DL2026W -04
161830 -14 1329  SQ6NDC RK6OQ KN87 (x2)
155645 -20 1792  SQ6NDC LA8ENA RR73
163715 -10  775  SQ6NDC Z61DX -13 (x2)
164715 -17 1163  SQ6NDC R7OV KN87
150545  -7 2733  SQ6NDC F1PBZ RR73
210945 -10 1522  SQ6NDC PA1GLD JO21
210945 -17 2392  SQ6NDC DN9OPA 73
211015 -10 1522  SQ6NDC PA1GLD JO21 (x4)

20m

UTC    dB Audio  Message
140945 -18 1132  SQ6NDC RU3QR -19 (x2)
141045 -14 1437  SQ6NDC F4FSY RR73
141115 -19 1131  SQ6NDC RU3QR -19
171315 -12  920  SQ6NDC RC5F KO85
135815 -17 1846  SQ6NDC DK3HV JO31 (x3)
140945 -10 1501  SQ6NDC YU7DES JN96 (x2)
141245 -10 1499  SQ6NDC YU7XL -11 (x2)
141545 -14 1863  SQ6NDC YU7DES R-05 (x2)
141715  +7  676  SQ6NDC HG7JLG RR73

80m

UTC    dB Audio  Message
033930  -8 1106  K4YT SQ6NDC -03
033945 -12 1108  SQ6NDC K4YT FM19
034015  +1 1106  SQ6NDC SP1ZMO JO73
034030  +0 1106  K4YT SQ6NDC -03
034045  -1 1106  SQ6NDC SP1ZMO JO73
034100  -1 1106  K4YT SQ6NDC -04
034115  +3 1106  SQ6NDC SP1ZMO JO73
034130  +2 1106  SP1ZMO SQ6NDC +01
034145  -2 1106  SQ6NDC SP1ZMO JO73
034200  +2 1106  SP1ZMO SQ6NDC +03
034215  +1 1106  SQ6NDC SP1ZMO R-01
034330  -3 1106  CQ SQ6NDC JO81
034400  -8 1106  DO1FFO SQ6NDC +04 (x2)
034715 -19 1108  SQ6NDC F5MJN JN09

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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