SP8HJM — 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: KN19

Receiver-side FT8 activity involving SP8HJM, decoded by SO8OO in southeastern Poland. 545 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 25 UTC dates in the available aggregate history. Observed between 2026-06-07 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 545 FT8 messages attributed to SP8HJM as the transmitting token by decoded message structure across 25 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (52%), followed by 80 m (46%) and 10 m (1%). Most decodes (89%) 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 (69%); the estimated median was 0 dB.

Overview

545

Messages attributed

UTC dates decoded

Active 15-min windows

0 dB

Estimated median S/N

Bands

80m · 248 40m · 286 20m · 4 10m · 7

First attributed message: 2026-06-07
Last attributed message: 2026-10-23 17:16 UTC

Observed FT8 message patterns

Attributed sample: 545 messages
Active dates: 25 UTC dates
Estimated median S/N: 0 dB
Estimated 10th-90th percentile: -15 to +15 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 53, moderate (-15 to -9 dB) 114, strong (≥ -8 dB) 378.

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 SP8HJM in decoded directed-looking exchanges:

SP4VIT · Poland ×2 DM8ITZ · Fed. Rep. of Germany IN3IBW · Italy DL7PIA · Fed. Rep. of Germany SQ5ANT · Poland

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 SP8HJM

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: KN19 · 396 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 100 km (approx.)
Last such locator decoded: 2026-10-23 17:16 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	SP8HJM S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-23 17:16	80m	+2 / -	SP4VIT	-1 / -5	4	✓ Full exchange observed
10-23 16:58	40m	- / -	PC2F	-9 / -	4	Partial capture
10-23 16:56	40m	-18 / -7	SP4VIT	-8 / -	3	✓ Closing observed
10-11 16:00	40m	- / -	DL7ACA	+3 / -	3	Partial capture
10-11 15:58	40m	-4 / -5	DM8ITZ	-3 / -8	6	✓ Full exchange observed
10-11 13:52	40m	+1 / -	DM8ITZ	- / -	4	Partial capture
10-10 18:11	80m	-6 / +3	DL7PIA	0 / -9	9	✓ Full exchange observed
10-10 17:57	80m	-1 / +3	DL7PIA	-2 / -	8	Partial capture
10-10 17:09	40m	- / +4	IN3IBW	+9 / -	2	✓ Closing fragment
10-09 17:44	80m	+3 / -	SQ5ANT	+8 / +6	5	✓ Full exchange observed
09-08 21:26	80m	- / -2	AM42SDC	-21 / -	2	Partial capture
09-08 21:24	80m	+9 / -	SM7/DL5BTE	- / -14	6	Partial capture
09-08 20:04	80m	+12 / -4	EG1SDC	-6 / -16	9	Partial capture
09-05 18:38	40m	- / +1	AM42SDC	+10 / -	2	Partial capture
09-05 17:51	40m	-4 / -	T77NC	- / -	4	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
180215  +3  805  DL7PIA SP8HJM KN19
180500  +1  615  SP8HJM DL7PIA +00
181115  -8 2022  DL7PIA SP8HJM KN19 (x2)
181200  +2  617  SP8HJM DL7PIA +03
181215  -6 2020  DL7PIA SP8HJM KN19
181230  +1  617  SP8HJM DL7PIA +02
181245  -5 2021  DL7PIA SP8HJM KN19 (x2)
181330  -2  617  SP8HJM DL7PIA RR73
181345  -7 2020  DL7PIA SP8HJM 73
171615 +17 2248  SP4VIT SP8HJM KN19
171630  -5 1347  SP8HJM SP4VIT +12
171645 -12 2346  SP4VIT SP8HJM R-05
171700  +3 1347  SP8HJM SP4VIT RR73

40m

UTC    dB Audio  Message
155900  -5 1604  DM8ITZ SP8HJM KN19
155915  -2 1540  SP8HJM DM8ITZ -05
155930  +1 1329  DM8ITZ SP8HJM R-08
155945  -4 1540  SP8HJM DM8ITZ RR73
160045  +3 2627  SP8HJM DL7ACA JO40 (x3)
172330 -23 1418  DL7PIA SP8HJM KN19
165615 -18 2284  SP4VIT SP8HJM KN19
165700  -8 1340  SP8HJM SP4VIT -07 (x2)
165800  -6 2284  SP8HJM PC2F JO22 (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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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