SP7CWZ — 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: JO91

Receiver-side FT8 activity involving SP7CWZ, decoded by SO8OO in southeastern Poland. 569 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 61 UTC dates in the available aggregate history. Observed between 2026-06-08 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 569 FT8 messages attributed to SP7CWZ as the transmitting token by decoded message structure across 61 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (52%), followed by 80 m (48%) and 20 m (1%). Most decodes (73%) fell within the six-hour window 15:00-21:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7.5 dB.

Overview

569
Messages attributed
61
UTC dates decoded
154
Active 15-min windows
-7.5 dB
Estimated median S/N

Bands

80m · 272 40m · 294 20m · 3
First attributed message: 2026-06-08
Last attributed message: 2026-10-23 12:00 UTC

Observed FT8 message patterns

Attributed sample
569 messages
Active dates
61 UTC dates
Estimated median S/N
-7.5 dB
Estimated 10th-90th percentile
-19 to +5 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 154, moderate (-15 to -9 dB) 120, strong (≥ -8 dB) 295.

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 SP7CWZ in decoded directed-looking exchanges:

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 SP7CWZ

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
JO91 · 302 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
262 km (approx.)
Last such locator decoded
2026-10-23 12:00 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 UTCBandSP7CWZ S/NCounterpartCounterpart S/NMsgsCapture
10-23 11:59 40m -24 / - SQ5NO - / - 3 Partial capture
10-23 11:20 40m -10 / - SP6TKK -2 / -6 3 ✓ Closing observed
10-23 10:11 10m - / -4 4X1UF 0 / - 2 ✓ Closing fragment
10-23 10:08 40m - / -16 SQ8V 0 / - 2 ✓ Closing fragment
10-23 07:25 40m -21 / 0 SP7VCL -4 / +3 3 ✓ Full exchange observed
10-19 13:09 40m -18 / -13 IN3KSO -12 / -16 7 ✓ Full exchange observed
10-18 10:53 40m - / -18 SP5RZL -12 / - 2 Partial capture
10-18 09:53 40m - / -9 SQ9MEZ +4 / - 2 ✓ Closing fragment
10-18 09:53 40m - / - R2AL -3 / - 5 Partial capture
10-18 09:51 40m - / 0 SQ9SET -6 / - 2 ✓ Closing fragment
10-18 09:49 40m -20 / -3 HF37KJP -14 / - 2 Partial capture
10-16 15:34 40m -15 / -5 HB9ELE +10 / -3 5 ✓ Full exchange observed
10-16 11:59 10m - / -10 PD1TVN -11 / - 2 ✓ Closing fragment
10-16 11:41 10m - / -2 EA7AH -8 / - 4 ✓ Closing fragment
10-16 11:06 10m - / -11 CR7BRV -6 / - 2 ✓ Closing fragment
10-13 15:00 40m -17 / - SP5RZL - / -14 3 Partial capture
10-12 12:19 10m - / -2 CR7BRV +8 / - 2 ✓ Closing fragment
10-10 08:36 40m - / -16 HG5OGI -8 / - 2 ✓ Closing fragment
10-06 09:05 40m - / -13 S53AK -8 / - 2 ✓ Closing fragment
10-06 08:23 40m - / -13 S55A -18 / - 2 ✓ Closing fragment
10-04 19:05 80m - / -5 SP7VCL -10 / - 3 ✓ Closing fragment
10-04 13:59 40m -16 / -19 HF5A -3 / -3 5 ✓ Full exchange observed
10-04 13:57 40m -14 / -4 SP8RPA +1 / - 4 ✓ Closing observed
10-04 11:09 40m -22 / - OK1ZJK - / - 2 Partial capture
10-02 07:31 40m - / -1 SP7VCL -8 / - 2 ✓ Closing fragment
09-27 15:38 40m - / -15 SQ8V -8 / - 2 Partial capture
09-27 09:37 40m - / -6 SQ9AWN -8 / - 2 ✓ Closing fragment
09-27 08:24 40m -24 / - SQ3EWA - / - 4 Partial capture
09-26 13:56 40m -19 / - SQ8V -7 / -5 4 ✓ Closing observed
09-26 12:24 40m -16 / - SP7VCL - / - 2 Partial capture
09-23 11:22 40m -13 / 0 SN100PKP -8 / -3 2 Partial capture
09-22 12:23 40m -14 / -5 SQ7OBB -20 / -1 9 Partial capture
09-21 15:50 40m - / -12 SQ9AWN -8 / - 2 ✓ Closing fragment
09-13 18:48 80m - / -13 SQ8V +6 / - 2 ✓ Closing fragment
09-13 18:09 80m -4 / -21 SP9TEX +17 / -12 5 ✓ Full exchange observed
09-13 18:02 80m -6 / -19 SP9TEX +25 / - 3 Partial capture
09-13 14:08 40m - / -25 SP9CXN +7 / - 3 Partial capture
09-13 13:59 40m - / -25 SP9CXN +8 / - 2 Partial capture
09-13 12:29 40m - / -10 SQ8V -2 / - 2 ✓ Closing fragment
09-13 08:22 40m - / -18 SP7VCL -6 / - 2 ✓ Closing fragment
09-13 07:35 40m - / -9 SQ9AWN 0 / - 3 Partial capture
09-12 20:36 80m - / -7 SP7VCL +11 / - 2 ✓ Closing fragment
09-12 19:18 80m -14 / -13 SP5RZL +5 / -10 2 Partial capture
09-12 18:18 80m -6 / -5 SP9CXN +7 / -7 4 ✓ Full exchange observed
09-12 18:18 80m - / -9 3Z100PKP +18 / - 2 Partial capture
09-12 17:54 80m -4 / -2 SP9KKA +12 / -4 5 ✓ Full exchange observed
09-12 17:00 80m +1 / - SQ9AWN +6 / -14 5 ✓ Full exchange observed
09-12 16:51 80m -1 / - SQ9AWN +4 / - 5 Partial capture
09-12 11:32 40m - / +4 SQ9AWN -10 / - 2 ✓ Closing fragment
09-11 17:42 80m +1 / -7 SQ8V +6 / -9 6 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
131015 -12 1541  SP7CWZ IN3KSO -13
131030 -18 1541  IN3KSO SP7CWZ R-16
131045 -13 1541  SP7CWZ IN3KSO RR73
131100 -19 1541  IN3KSO SP7CWZ 73
072515  -3 1748  SP7CWZ SP7VCL +00
072530 -21 1747  SP7VCL SP7CWZ R+03
072545  -4 1748  SP7CWZ SP7VCL RR73
100830  -3  676  SP7CWZ SQ8V -16 (x2)
112000 -10  676  SP6TKK SP7CWZ R-06
112015  -2  676  SP7CWZ SP6TKK RR73
112030  -9  676  SP6TKK SP7CWZ 73
115900 -24 1688  SQ5NO SP7CWZ JO91 (x3)
10m 
UTC    dB Audio  Message
120300  -8 1350  SP7CWZ SV1CQN -05 (x2)
120830 -17 2241  SP7CWZ F4GAJ +05
121900 +10  831  SP7CWZ CR7BRV -02 (x4)
114130  -9  285  SP7CWZ EA7AH IM67 (x4)
115900 -12 2520  SP7CWZ PD1TVN -10 (x2)
101130  -4  253  SP7CWZ 4X1UF -04 (x2)
80m 
UTC    dB Audio  Message
203715 +10 1502  SP7CWZ SP7VCL RR73
180230  -6 1503  SP9TEX SP7CWZ JO91
180345 +23 1715  SP7CWZ SP9TEX -19 (x2)
180900  -3 1503  SP9TEX SP7CWZ JO91 (x2)
181045 +17 1832  SP7CWZ SP9TEX -21
181130  -4 1503  SP9TEX SP7CWZ R-12 (x2)
181215  +3 1565  SP7CWZ SP9EPW -01
184800  +9  735  SP7CWZ SQ8V -13 (x2)
190515  -8 1502  SP7CWZ SP7VCL -05 (x3)
20m 
UTC    dB Audio  Message
162600 -19 1130  SP7CWZ YO4GIY -16
113545 -15 2326  SP7CWZ OZ9FF RR73
122615  -6  319  SP7CWZ PG4T -14
133945 -11 1370  SP7CWZ ON4AOI -16 (x2)
131515 -14 1110  SP7CWZ F4HTA RR73
130015  -6 2020  SP7CWZ TA2PCB RR73
131015  -6 1458  SP7CWZ TA1MB RR73
131115  -2 1576  SP7CWZ PD3LKN JO22 (x3)
171615 +14 2265  SP7CWZ F8FUA RR73
173130  -2 1914  SP7CWZ M7VME +02 (x2)
133215 -10 2025  SP7CWZ G1HJW RR73

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