S54ZGA — 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: Slovenia Most frequent locator attributed to this token: JN76

Receiver-side FT8 activity involving S54ZGA, decoded by SO8OO in southeastern Poland. 1,074 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 21 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-17.

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 1,074 FT8 messages attributed to S54ZGA as the transmitting token by decoded message structure across 21 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (56%), followed by 40 m (44%). Most decodes (63%) fell within the six-hour window 13:00-19:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

1,074
Messages attributed
21
UTC dates decoded
112
Active 15-min windows
-9 dB
Estimated median S/N

Bands

40m · 473 20m · 601
First attributed message: 2026-06-07
Last attributed message: 2026-09-17 17:37 UTC

Observed FT8 message patterns

Attributed sample
1,074 messages
Active dates
21 UTC dates
Estimated median S/N
-9 dB
Estimated 10th-90th percentile
-18 to 0 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 176, moderate (-15 to -9 dB) 386, strong (≥ -8 dB) 512.

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 S54ZGA 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 S54ZGA

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
JN76 · 257 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
631 km (approx.)
Last such locator decoded
2026-09-05 05:51 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 UTCBandS54ZGA S/NCounterpartCounterpart S/NMsgsCapture
09-17 17:36 40m +5 / - SV3SIM - / +4 3 Partial capture
09-17 17:33 40m +1 / - RK3DJW - / +1 5 Partial capture
09-17 17:30 40m 0 / - JA5NSR - / -22 2 Partial capture
09-05 06:34 40m -8 / - IU1HGN - / -18 2 ✓ Closing fragment
09-05 06:30 40m -11 / -9 IN3LTL -12 / -21 4 ✓ Full exchange observed
09-05 06:26 40m -13 / - ON8XT - / +2 2 Partial capture
09-05 06:25 40m -10 / - IU7TCY - / -3 3 ✓ Closing fragment
09-05 06:23 40m -6 / 0 SQ9SET +3 / -6 8 ✓ Full exchange observed
09-05 06:21 40m -7 / 0 DK5UR -3 / - 3 ✓ Closing observed
09-05 06:19 40m -11 / +5 OE4BHF -3 / -16 3 ✓ Full exchange observed
09-05 06:17 40m -1 / - AM42SDC - / -14 3 Partial capture
09-05 06:16 40m -10 / - F4NGR -15 / -6 4 ✓ Closing observed
09-05 06:15 40m +3 / -10 F5OZC 0 / -8 4 ✓ Full exchange observed
09-05 06:13 40m -6 / -9 F4FQY -4 / -5 5 ✓ Full exchange observed
09-05 06:12 40m -5 / - OE1AVO - / - 2 ✓ Closing fragment
09-05 06:07 40m -5 / -23 DL9KM 0 / -11 9 ✓ Full exchange observed
09-05 06:07 40m -6 / -16 IZ2EWN -2 / -4 5 ✓ Full exchange observed
09-05 06:06 40m -7 / -6 DL7EDU 0 / -3 5 ✓ Full exchange observed
09-05 06:04 40m -10 / - PE2LRT - / -9 4 Partial capture
09-05 06:02 40m -4 / - SQ8V - / -3 3 ✓ Closing fragment
09-05 05:57 40m -8 / -11 IK2PZX -10 / -8 4 ✓ Full exchange observed
09-05 05:55 40m - / -9 PA3T -6 / - 2 ✓ Closing fragment
09-05 05:52 40m -11 / -16 G0OYQ -6 / -14 3 ✓ Full exchange observed
09-05 05:49 40m -12 / -12 YO4NT +4 / - 3 ✓ Closing observed
09-05 05:46 40m -7 / -19 SP3IPA +8 / - 4 ✓ Closing observed
09-05 05:43 40m -9 / -15 OO0O -10 / -20 4 ✓ Full exchange observed
09-05 05:42 40m -7 / -14 PA3CPS -2 / -8 4 ✓ Full exchange observed
09-05 05:37 40m -11 / -6 YO3GNF -3 / +1 8 ✓ Full exchange observed
09-05 05:29 40m -9 / - M7OBF - / -12 2 Partial capture
09-05 05:22 40m -6 / - IS0AFM - / -8 4 Partial capture
09-05 05:20 40m -9 / -4 DL6LG -15 / -22 4 ✓ Full exchange observed
09-05 05:19 40m -14 / - EA5D - / -16 2 ✓ Closing fragment
09-05 05:18 40m -12 / -23 IU7SQV -7 / -2 4 ✓ Full exchange observed
09-05 05:14 40m -16 / -21 RV3SBS/P -16 / -5 2 Partial capture
09-05 05:09 40m -4 / - R1943OD - / +3 4 Partial capture
09-05 05:05 40m -12 / - PV8AJ - / -16 3 Partial capture
09-05 05:04 40m -10 / -15 UT5MB -5 / -2 4 ✓ Full exchange observed
09-05 05:01 40m -1 / - G1CEC -10 / -17 3 Partial capture
09-05 05:01 40m 0 / -5 SP9KDA -10 / - 4 ✓ Full exchange observed
09-04 18:14 40m - / -20 SP3IBS +12 / - 2 Partial capture
09-04 18:11 40m -4 / - RO6K - / -6 3 Partial capture
09-04 18:10 40m -3 / -20 G0BKC -10 / -8 3 ✓ Full exchange observed
09-04 18:08 40m -8 / - F4JYP - / -3 3 Partial capture
09-04 18:05 40m -13 / - UB3AYQ - / -10 4 Partial capture
09-04 18:02 40m +2 / - PD7PIN - / -7 2 ✓ Closing fragment
09-04 17:59 40m -12 / - DL8NCV -9 / - 3 ✓ Closing observed
09-04 17:48 40m -6 / -16 EB5RCA -19 / - 2 ✓ Closing observed
09-04 17:46 40m -12 / - HA5IHJ - / -6 2 Partial capture
09-04 17:40 40m -10 / -16 RK6ADN 0 / -8 4 ✓ Full exchange observed
09-04 17:36 40m 0 / - AM42SDC - / -3 4 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
063130 -12 2126  S54ZGA IN3LTL 73
063400 -10  825  IU1HGN S54ZGA -18 (x2)
063715  -5  622  S54ZGA F1DSZ R-15
172945  -6  297  RK3DJW S54ZGA +00
173015  -2  419  JA5NSR S54ZGA -22 (x2)
173345  +1  297  RK3DJW S54ZGA +01 (x5)
173615  +9 2870  SV3SIM S54ZGA +04 (x3)
20m 
UTC    dB Audio  Message
161215  -9  998  S54ZGA M7KPQ 73
161500 -24 1770  S54ZGA BD4UJ PM02 (x2)
161630  +3 2405  S54ZGA M0NFZ R-04 (x2)
161930 -11 2017  S54ZGA F1ICS/P JN05 (x2)
162145  -9  622  S54ZGA M9OOS 73
162245  -7 2475  S54ZGA M8GGQ 73
162800  -1  419  S54ZGA CN8NS R-06 (x2)
163130 +12 1844  S54ZGA G3VCQ R-05 (x2)
163830  -2  784  S54ZGA 7X2KF R-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.

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