SQ1RTU — 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: Poland Most frequent locator attributed to this token: JO73

Receiver-side FT8 activity involving SQ1RTU, decoded by SO8OO in southeastern Poland. 1,318 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 27 UTC dates in the available aggregate history. Observed between 2026-08-03 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 1,318 FT8 messages attributed to SQ1RTU as the transmitting token by decoded message structure across 27 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (55%), followed by 20 m (27%) and 80 m (11%). Most decodes (59%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (76%); the estimated median was -3.2 dB.

Overview

1,318

Messages attributed

UTC dates decoded

128

Active 15-min windows

-3.2 dB

Estimated median S/N

Bands

160m · 103 80m · 139 40m · 724 20m · 352

First attributed message: 2026-08-03
Last attributed message: 2026-10-23 19:01 UTC

Observed FT8 message patterns

Attributed sample: 1,318 messages
Active dates: 27 UTC dates
Estimated median S/N: -3.2 dB
Estimated 10th-90th percentile: -13 to +4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 80, moderate (-15 to -9 dB) 230, strong (≥ -8 dB) 1,008.

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 SQ1RTU in decoded directed-looking exchanges:

DK7ZT · Fed. Rep. of Germany ×3 F1PBZ · France ×3 F4FSY · France ×2 IK4LZH · Italy ×2 DL1UDO · Fed. Rep. of Germany ×2 DL3TA · Fed. Rep. of Germany ×2 GJ0KYZ · Jersey ×2 IK4RVY · Italy ×2 M1DBW · England ×2 PD0MNO · Netherlands ×2 UR4QWW · Ukraine ×2 5P1KZX · Denmark ×2

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 SQ1RTU

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: JO73 · 646 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 613 km (approx.)
Last such locator decoded: 2026-10-23 19:00 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	SQ1RTU S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-23 19:02	160m	- / -7	DG5CST	+18 / -	2	Partial capture
10-23 19:00	80m	0 / -	LA2GCA	- / -15	2	Partial capture
10-23 18:56	80m	-2 / -3	YO3FRI	+4 / -	3	✓ Closing observed
10-23 18:53	80m	+8 / -	DO9NMH	- / -	2	Partial capture
10-23 18:51	80m	0 / -1	2E0FHM	-8 / -	3	✓ Closing observed
10-23 18:26	160m	-8 / +7	DK9NP	-10 / -5	4	✓ Full exchange observed
10-23 18:25	160m	-11 / -13	SQ3LMR	-3 / -10	7	✓ Full exchange observed
10-23 18:25	160m	-4 / -	SQ9PBV	- / -13	2	✓ Closing fragment
10-23 18:20	160m	-11 / -19	YL3KZ	-10 / +1	5	✓ Full exchange observed
10-23 18:16	160m	-8 / -11	OE6AXG	-7 / -12	5	✓ Full exchange observed
10-23 18:09	160m	-15 / -10	DO2SBS	-8 / -10	4	✓ Full exchange observed
10-23 18:04	160m	- / -	RA1WU	+10 / -	2	Partial capture
10-23 18:03	160m	- / -14	ES2AJ	+8 / -	2	Partial capture
10-23 18:02	160m	-7 / -12	IK3/UY7LA	-12 / -8	2	Partial capture
10-23 18:00	160m	-10 / -10	DD1UN	-16 / -8	4	✓ Full exchange observed
10-23 17:56	160m	-8 / -11	DL6WAB	-22 / -9	6	✓ Full exchange observed
10-23 17:53	160m	-14 / -	SP7SLO	- / +2	2	✓ Closing fragment
10-23 17:48	160m	-12 / -14	OH3NAQ	+2 / -10	5	✓ Full exchange observed
10-23 17:47	160m	-6 / -8	F6DHD	-12 / -18	4	✓ Full exchange observed
10-23 17:44	160m	-6 / -1	OK1WCF	+8 / -6	6	✓ Full exchange observed
10-23 17:42	160m	-3 / +5	OZ0A	-9 / -8	5	✓ Full exchange observed
10-23 17:39	160m	-13 / -22	OE3OOG	-1 / -	6	✓ Closing observed
10-23 17:39	160m	-12 / +2	SP9DWT	+4 / -16	6	✓ Full exchange observed
10-23 17:37	160m	-15 / -6	OH5KNL	+2 / -16	7	✓ Full exchange observed
10-23 17:34	160m	-20 / -1	SP3BPU	+10 / -12	4	✓ Full exchange observed
10-23 12:28	10m	- / -18	CR7BUW	-10 / -	2	Partial capture
10-23 12:10	10m	- / +1	CT7BRV	+4 / -	2	✓ Closing fragment
10-23 12:05	10m	- / +10	CT1EEX	-11 / -	2	✓ Closing fragment
10-23 11:51	40m	-18 / +9	HA1BF	-12 / -6	7	✓ Full exchange observed
10-23 11:51	40m	-20 / -4	9A3AUH	-8 / -	5	✓ Closing observed
10-23 11:51	40m	- / 0	HF5W	+3 / -	3	Partial capture
10-23 11:50	40m	-19 / +2	DK6WH	-4 / -15	5	✓ Full exchange observed
10-23 11:49	40m	- / -	DG9SEH	-15 / -	4	Partial capture
10-23 11:48	40m	-18 / -	9A7BB	-24 / -15	3	✓ Closing observed
10-22 05:23	40m	- / -11	G0ODR/P	+12 / -	2	Partial capture
10-21 19:43	40m	- / -	IU8RFW	-1 / -	5	Partial capture
10-21 19:42	40m	- / -13	EX7CQ	+3 / -	2	✓ Closing fragment
10-21 19:42	40m	- / -14	UN0GY	-10 / -	2	Partial capture
10-21 19:24	40m	- / -11	F1PBZ	+2 / -	2	✓ Closing fragment
10-21 19:21	80m	0 / -	YL3CW	- / -	2	Partial capture
10-21 19:16	160m	-19 / -	DK1MBY	- / -	4	Partial capture
10-21 19:15	160m	-10 / -	SM2OTU	- / -14	3	✓ Closing fragment
10-21 19:13	160m	-5 / -	M1DDD	- / -	3	Partial capture
10-21 19:12	160m	- / -8	F1PBZ	+6 / -	3	Partial capture
10-21 19:11	160m	-13 / -19	DK7ZT	+9 / -2	5	✓ Full exchange observed
10-21 19:07	160m	-14 / -7	DO3VE	-3 / -16	9	✓ Full exchange observed
10-21 19:05	160m	-9 / -	YL3CW	- / -	2	Partial capture
10-20 13:02	10m	- / -14	EA7GHD	-16 / -	2	✓ Closing fragment
10-20 12:36	10m	- / -14	7Z1FF	-6 / -	2	✓ Closing fragment
09-13 20:19	40m	- / -7	M0BEW	0 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
182545  -5 1383  SQ1RTU SQ3LMR JO81
182600  -6 1764  CQ SQ1RTU JO73
182615  -4 1383  SQ1RTU SQ3LMR JO81
182615 -13  973  SQ1RTU DK9NP +07
182630 -10 1764  DK9NP SQ1RTU R-05
182645  -6  973  SQ1RTU DK9NP RR73
182700  -6 1764  DK9NP SQ1RTU 73
182730 -16 1764  CQ SQ1RTU JO73
182745  -9 1383  SQ1RTU SQ3LMR JO81
182800  -9 1763  SQ3LMR SQ1RTU -10
182815  -2 1383  SQ1RTU SQ3LMR R-13
182830 -13 1763  SQ3LMR SQ1RTU RR73
182845  +3 1383  SQ1RTU SQ3LMR 73
190230 +19  905  SQ1RTU DG5CST -07 (x2)

80m

UTC    dB Audio  Message
191615  -3 1950  DO1MGN SQ1RTU RR73
191630 -11  507  SQ1RTU DO1MGN 73
192100  -5 1927  YL3CW SQ1RTU JO73 (x2)
185145  +0 1765  2E0FHM SQ1RTU JO73
185200  -8 1270  SQ1RTU 2E0FHM -01 (x2)
185300  +6 1765  SQ1RTU US2YW KN28
185315 +11 1765  DO9NMH SQ1RTU JO73 (x2)
185630  +4 1846  SQ1RTU YO3FRI -03 (x2)
185715  -2 1765  YO3FRI SQ1RTU 73
190045  +2 1765  LA2GCA SQ1RTU JO73 (x2)

10m

UTC    dB Audio  Message
162730  +3  783  SQ1RTU IW3GLJ -01
163400  -4  569  SQ1RTU 4Z5ML -11 (x2)
120845 -20 1294  SQ1RTU EA9ADC -03
123600  -5 2267  SQ1RTU 7Z1FF -14 (x2)
124300 -24 1593  SQ1RTU CR7BUW -10
130230 -13 1481  SQ1RTU EA7GHD -14 (x2)
120545 -14 1425  SQ1RTU CT1EEX +10 (x2)
121000  +4 1148  SQ1RTU CT7BRV +01 (x2)
122815 -14  718  SQ1RTU CR7BUW -18 (x2)

40m

UTC    dB Audio  Message
115130  -5 2028  SQ1RTU 9A3AUH JN75
115145 -17 1914  HA1BF SQ1RTU JO73
115200  +4  944  SQ1RTU HF5W +00
115200 -12 1415  SQ1RTU HA1BF +09
115200  -5 2028  SQ1RTU 9A3AUH JN75
115230  +2  944  SQ1RTU HF5W +00
115230 -16 1415  SQ1RTU HA1BF +09
115230  -8 2028  SQ1RTU 9A3AUH R-04
115245 -20 1914  9A3AUH SQ1RTU RR73
115300 -11 1415  SQ1RTU HA1BF +09
115300 -12 2028  SQ1RTU 9A3AUH 73
115315 -18 1915  HA1BF SQ1RTU R-06
115330  -8 1415  SQ1RTU HA1BF RR73
115345 -20 1915  HA1BF SQ1RTU 73
115415 -20 1915  IZ8XXE SQ1RTU JO73

20m

UTC    dB Audio  Message
120045  +5 1578  DF3IS SQ1RTU R-16
120100  +5 1309  SQ1RTU DF3IS RR73
120115  -6 1578  DF3IS SQ1RTU 73
120845 -18 1577  DH8KAM SQ1RTU JO73
120945 -11 1578  DC2TL SQ1RTU JO73
121015 -15 1577  UT3ED SQ1RTU JO73 (x5)
185445 -11 1665  SQ1RTU M1DBW R-09 (x2)
185745  +1 1297  SQ1RTU M7JVT 73
190015 -18 1792  SQ1RTU PA0KGB 73
190045 -16  765  SQ1RTU DF2SL JN58

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

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