SP3HRN — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: JO71

Receiver-side FT8 activity involving SP3HRN, decoded by SO8OO in southeastern Poland. 157 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, across 13 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-09-21.

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 157 FT8 messages attributed to SP3HRN as the transmitting token by decoded message structure across 13 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (29%), followed by 80 m (25%) and 20 m (22%). Most decodes (93%) 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 (84%); the estimated median was +2 dB.

Overview

157

Messages attributed

UTC dates decoded

Active 15-min windows

+2 dB

Estimated median S/N

Bands

160m · 46 80m · 39 60m · 8 40m · 29 20m · 35

First attributed message: 2026-06-12
Last attributed message: 2026-09-21 19:56 UTC

Observed FT8 message patterns

Attributed sample: 157 messages
Active dates: 13 UTC dates
Estimated median S/N: +2 dB
Estimated 10th-90th percentile: -12 to +15 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 3, moderate (-15 to -9 dB) 22, strong (≥ -8 dB) 132.

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 SP3HRN in decoded directed-looking exchanges:

RC5F · European Russia ×2 DK7ZT · Fed. Rep. of Germany ×2 RI1FJL · Franz Josef Land ×2 HB9HNU · Switzerland M0BEW · England DL6EL · Fed. Rep. of Germany BG7BVI · China DL3MIB · Fed. Rep. of Germany EA1C · Spain JG1IPZ · Japan SV5BYP · Dodecanese UR5VPR · Ukraine

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 SP3HRN

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: JO71 · 100 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 508 km (approx.)
Last such locator decoded: 2026-09-21 19:56 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	SP3HRN S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-21 19:49	80m	+10 / +2	RI1FJZ	-19 / -10	7	Partial capture
09-21 19:42	80m	+1 / -	UA4FKT	+5 / -7	4	Partial capture
09-21 17:05	80m	+16 / -	JH1BBT	- / -	3	Partial capture
09-20 20:20	160m	+5 / -	RI1FJZ	- / -11	2	Partial capture
09-20 19:22	160m	-2 / -	R9SAP	- / -	6	Partial capture
09-20 18:52	160m	+21 / -2	DL6EL	-16 / -12	5	✓ Full exchange observed
09-20 18:39	160m	+10 / -	RI1FJZ	- / -	16	Partial capture
09-20 18:18	160m	+10 / -	RI1FJZ	- / -	11	Partial capture
09-02 20:32	40m	-2 / -	RI1FJL	- / -15	6	✓ Closing fragment
09-02 20:30	40m	- / -10	CN8NS	-4 / -	2	✓ Closing fragment
09-02 19:45	80m	+10 / -	RI1FJL	- / -18	10	✓ Closing fragment
09-02 19:44	80m	+4 / -	R1FJL	- / -	3	Partial capture
09-02 19:40	80m	-4 / -13	YU1FI	-2 / -13	4	✓ Full exchange observed
09-02 19:35	80m	+10 / -	V51WH	- / -23	4	Partial capture
09-02 19:31	80m	+7 / -	V51WH	- / -23	2	Partial capture
09-01 19:57	60m	-13 / +2	DD6ZV	0 / +2	4	✓ Full exchange observed
09-01 19:55	60m	-16 / -24	ON7KEI	-20 / 0	4	✓ Full exchange observed
09-01 19:55	60m	-14 / -1	DK7ZT	-15 / +2	6	✓ Full exchange observed
08-21 20:27	40m	+9 / -	JH5LCN	- / -	4	Partial capture
08-21 20:00	20m	- / -	9A/SQ5BUJ	-10 / -	2	Partial capture
08-21 19:59	20m	-21 / -8	DK7ZT	-4 / -	6	✓ Closing observed
08-21 19:52	20m	- / -	DL6RS	+3 / -	6	Partial capture
08-21 19:52	20m	-2 / -	BI4JJO	- / -9	2	Partial capture
08-21 19:50	20m	-5 / -	JG1IPZ	- / -4	2	✓ Closing fragment
08-21 19:49	20m	+6 / -1	DL3MIB	+14 / +3	5	✓ Full exchange observed
08-21 19:47	20m	+13 / -	BG7BVI	- / -4	2	✓ Closing fragment
08-21 19:46	20m	+14 / +1	EA1C	-14 / -11	4	✓ Full exchange observed
08-21 19:45	20m	- / -7	DK7ZT	-4 / -	5	Partial capture
08-21 19:43	20m	+14 / -	ZL1VAH	- / -16	2	Partial capture
08-18 20:14	40m	-3 / -	D2UY	- / -	8	Partial capture
08-18 20:07	40m	-8 / -	T77RN	- / -	2	✓ Closing fragment
08-11 18:02	10m	- / -11	F1PBZ	-11 / -	2	Partial capture
07-26 21:01	20m	- / -13	G1LQT	-10 / -	2	Partial capture
07-21 16:35	20m	-9 / -7	RC5F	-12 / -8	3	✓ Full exchange observed
07-20 09:15	10m	- / +7	RC5F	-8 / -	6	✓ Closing fragment
07-19 19:16	10m	- / +5	M0BEW	-10 / -	2	✓ Closing fragment
07-19 11:22	10m	- / -22	HB9HNU	-12 / -	2	✓ Closing fragment
07-19 10:44	10m	- / -1	IK4UNQ	-14 / -	3	Partial capture
07-19 10:40	10m	- / -	ON7KEI	-19 / -	2	Partial capture
07-02 22:26	40m	-8 / -5	IN3XUG	-15 / -	2	Partial capture
07-02 14:15	20m	- / -	9A3AUH	-4 / -	2	Partial capture
07-02 14:12	20m	- / -	M0SCK	-14 / -	2	Partial capture
07-02 14:09	20m	-4 / -	UR5VPR	- / -11	2	✓ Closing fragment
06-29 19:10	20m	-4 / -	CR2WWA	- / -	2	Partial capture
06-27 16:53	20m	- / -9	SV5BYP	-11 / -	2	✓ Closing fragment
06-26 16:36	20m	- / -	DL1R	-6 / -	4	Partial capture
06-26 16:31	20m	- / -	OE6TNO	0 / -	7	Partial capture
06-26 16:26	20m	-10 / -	IS0BSR	- / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
201715  -9 2410  D2UY SP3HRN JO71 (x2)
202745  +6  881  JH5LCN SP3HRN JO71 (x4)
203000  -4 2236  SP3HRN CN8NS -10 (x2)
203215  -1  692  RI1FJL SP3HRN JO71 (x6)
195615 -15  701  RI1FJZ SP3HRN JO71

80m

UTC    dB Audio  Message
170645 +17 1054  JH1BBT SP3HRN JO71
194215  +4 1262  CQ SP3HRN JO71
194230  +5 1261  SP3HRN UA4FKT LO23
194245  +1 1262  UA4FKT SP3HRN -07 (x3)
194415  +4 1262  JA6BZI SP3HRN RR73
194945  +8 1202  RI1FJZ SP3HRN JO71 (x5)
195200 -19 1202  SP3HRN RI1FJZ +02
195215 +13 1202  RI1FJZ SP3HRN R-10
195230 -24 1202  SP3HRN RR73; F4FFZ <...> -14

160m

UTC    dB Audio  Message
184915 +18 2250  RI1FJZ SP3HRN JO71
185230 +22 2957  CQ SP3HRN JO71
185245 -17 1564  SP3HRN DL6EL JN57
185300 +22 2957  DL6EL SP3HRN -12
185315 -14 1564  SP3HRN DL6EL R-02
185330 +20 2956  DL6EL SP3HRN RR73
185345 -18 1564  SP3HRN DL6EL 73
192215  -5 2262  R9SAP SP3HRN JO71 (x6)
202015  +2 1792  RI1FJZ SP3HRN R-11 (x2)

60m

UTC    dB Audio  Message
195515  +6 1243  SP3HRN DD6ZV JO62
195530 -17 1242  ON7KEI SP3HRN +00
195545 -22 1455  SP3HRN ON7KEI R-24
195545 -14 1901  SP3HRN DK7ZT -01
195600 -14 1242  ON7KEI SP3HRN RR73
195615 -18 1455  SP3HRN ON7KEI 73
195615 -17 1900  SP3HRN DK7ZT -01
195630 -13 1242  DK7ZT SP3HRN R+02
195645 -14 1900  SP3HRN DK7ZT RR73
195700 -15 1242  DK7ZT SP3HRN 73
195730 -12 1242  CQ SP3HRN JO71
195745  -1 1243  SP3HRN DD6ZV JO62
195800 -12 1242  DD6ZV SP3HRN +02
195815  +1 1243  SP3HRN DD6ZV R+02
195830 -14 1243  DD6ZV SP3HRN RR73

20m

UTC    dB Audio  Message
195230  +9 2926  SP3HRN DL6RS JN48
195245  -7  819  BI4JJO SP3HRN -09
195300  +4 2926  SP3HRN DL6RS JN48 (x5)
195900  -5  819  SP3HRN DK7ZT -08 (x3)
200000 -12  768  <SP3HRN> 9A/SQ5BUJ
200030  -2  819  SP3HRN DK7ZT -08
200030  -9  768  <SP3HRN> 9A/SQ5BUJ
200100  -4  819  SP3HRN DK7ZT RR73
200115 -21  819  DK7ZT SP3HRN 73

10m

UTC    dB Audio  Message
104445 -14 1152  SP3HRN IK4UNQ -01 (x2)
112215  -9 1234  SP3HRN HB9HNU -22 (x2)
191615 -11 1311  SP3HRN M0BEW +05 (x2)
091545 -10  992  SP3HRN RC5F KO85 (x6)
161915  -5  776  SP3HRN Z61DX +28
180200 -14 2684  SP3HRN F1PBZ -11 (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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