SQ9CAH — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: KN09

Receiver-side FT8 activity involving SQ9CAH, decoded by SO8OO in southeastern Poland. 66 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 15 UTC dates in the available aggregate history. Observed between 2026-06-09 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 66 FT8 messages attributed to SQ9CAH as the transmitting token by decoded message structure across 15 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (39%), followed by 20 m (26%) and 60 m (20%). Several six-hour UTC windows tied for the largest share (71%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (64%); the estimated median was -1 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-1 dB

Estimated median S/N

Bands

80m · 10 60m · 13 40m · 26 20m · 17

First attributed message: 2026-06-09
Last attributed message: 2026-09-19 04:57 UTC

Observed FT8 message patterns

Attributed sample: 66 messages
Active dates: 15 UTC dates
Estimated median S/N: -1 dB
Estimated 10th-90th percentile: -17 to +18 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 17, strong (≥ -8 dB) 42.

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 SQ9CAH in decoded directed-looking exchanges:

F4HSB · France R4ML · European Russia ZL1VAH · New Zealand VJ6X · Australia CE2SV · Chile N8OQ · United States NP3MR · Puerto Rico 6Y5HN · Jamaica HC1BG · Ecuador

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 SQ9CAH

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: KN09 · 49 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 75 km (approx.)
Last such locator decoded: 2026-09-19 04:56 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	SQ9CAH S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-19 04:55	80m	+20 / -	6Y5HN	- / -20	4	✓ Closing fragment
09-14 04:43	40m	-11 / -	ZL2AYZ	- / -	3	Partial capture
09-14 04:42	40m	- / -	PC2J	-12 / -	5	Partial capture
09-14 04:42	40m	- / -	RA6OY	0 / -	5	Partial capture
09-14 04:02	80m	+20 / -22	HC1BG	-22 / -12	5	✓ Full exchange observed
09-12 04:44	40m	-6 / -	J38LD	- / -	2	Partial capture
09-11 04:20	60m	- / -20	CE2SV	-11 / -	2	✓ Closing fragment
09-11 04:14	80m	+18 / -	9Z4A	- / -	2	Partial capture
09-10 04:42	60m	- / -	G0BLB	-8 / -	3	Partial capture
09-06 04:11	60m	- / -5	EA1CQ	-18 / -	2	Partial capture
09-06 04:10	60m	+4 / -	N8OQ	- / -11	3	✓ Closing fragment
09-06 04:07	60m	-2 / -	W9AV	- / -	2	Partial capture
08-27 04:56	20m	-12 / -	ZL1AOX	- / -	4	Partial capture
08-27 04:46	20m	- / -2	ZL1VAH	-10 / -	2	✓ Closing fragment
08-25 05:10	20m	-10 / -	VK4BPK	- / -	2	Partial capture
08-25 04:53	20m	-14 / -	ZL1GT	- / -15	2	Partial capture
08-23 15:53	40m	+7 / -	VJ6X	- / -8	3	✓ Closing fragment
08-23 15:45	40m	+2 / -	ZL2NU	- / -	4	Partial capture
08-23 15:39	40m	+12 / -	ZL2NU	- / -	5	Partial capture
08-23 15:36	40m	+6 / -	ZL2NU	- / -	2	Partial capture
08-23 15:28	40m	+4 / -	ZL2NU	- / -	3	Partial capture
08-21 04:17	60m	-12 / -	NP3MR	- / -11	3	✓ Closing fragment
08-10 04:39	60m	- / -9	SP9SOS	-8 / -	2	Partial capture
08-10 04:37	60m	+10 / -	<...>	- / -9	3	Partial capture
07-30 03:10	20m	- / -	EA1IOK	-3 / -	4	Partial capture
07-30 03:09	20m	- / -4	R4ML	+4 / -	3	✓ Closing fragment
07-06 11:24	20m	- / +4	F4HSB	-22 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
041430 +19 2603  9Z4A SQ9CAH KN09 (x2)
041745 -20 2353  SQ9CAH 9Z4A -08
043100 +10 1473  KE4EB SQ9CAH KN09
040230 +17 2177  HC1BG SQ9CAH KN09
040245 -20 1442  SQ9CAH HC1BG -22
040300 +18 2177  HC1BG SQ9CAH R-12
040315 -24 1442  SQ9CAH HC1BG RR73
040330 +26 2177  HC1BG SQ9CAH 73
045530 +16 2426  6Y5HN SQ9CAH KN09 (x4)

40m

UTC    dB Audio  Message
041930 -17 2309  II4PAGE SQ9CAH KN09
044230 -17 1384  CQ SQ9CAH KN09
044245  -1  896  SQ9CAH RA6OY KN88
044245 -12 1384  SQ9CAH PC2J JO22
044315 -12 2390  ZL2AYZ SQ9CAH KN09
044315  +1  896  SQ9CAH RA6OY KN88
044315 -13 1384  SQ9CAH PC2J JO22
044345 -10 2391  ZL2AYZ SQ9CAH KN09
044345  -1  896  SQ9CAH RA6OY KN88
044345 -10 1384  SQ9CAH PC2J JO22
044415 -11 2391  ZL2AYZ SQ9CAH KN09
044415  -1  896  SQ9CAH RA6OY KN88
044415 -14 1383  SQ9CAH PC2J JO22
044445  +1  896  SQ9CAH RA6OY KN88
044445 -12 1384  SQ9CAH PC2J JO22

60m

UTC    dB Audio  Message
041815  -9 2154  NP3MR SQ9CAH R-11 (x2)
040745  -1 1925  W9AV SQ9CAH KN09 (x2)
041000  +3 1925  N8OQ SQ9CAH KN09 (x3)
041145 -19 1925  SQ9CAH EA1CQ -05 (x2)
043900 -24 1540  6Y5HN SQ9CAH KN09
044215  -9  554  SQ9CAH G0BLB IO81 (x3)
042015 -12 2528  SQ9CAH CE2SV -20 (x2)

20m

UTC    dB Audio  Message
031145  +5  680  SQ9CAH R4ML -10
031145  -1  583  SQ9CAH EA1IOK IN62 (x2)
045315 -15 1184  ZL1GT SQ9CAH KN09 (x2)
050815 -17 1496  VK4BPK SQ9CAH KN09 (x3)
060245  -7  865  ZL2AGY SQ9CAH KN09
044630  -9 2603  SQ9CAH ZL1VAH -02 (x2)
045630 -17 1528  ZL1AOX SQ9CAH KN09 (x4)

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.

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