UW5EFR — 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: Ukraine Most frequent locator attributed to this token: KN68

Receiver-side FT8 activity involving UW5EFR, decoded by SO8OO in southeastern Poland. 132 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 19 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-11-01.

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 132 FT8 messages attributed to UW5EFR as the transmitting token by decoded message structure across 19 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (77%), followed by 40 m (13%) and 10 m (10%). Most decodes (85%) fell within the six-hour window 12:00-18:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12 dB.

Overview

132
Messages attributed
19
UTC dates decoded
32
Active 15-min windows
-12 dB
Estimated median S/N

Bands

40m · 17 20m · 102 10m · 13
First attributed message: 2026-06-06
Last attributed message: 2026-11-01 16:54 UTC

Observed FT8 message patterns

Attributed sample
132 messages
Active dates
19 UTC dates
Estimated median S/N
-12 dB
Estimated 10th-90th percentile
-19 to -4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 38, moderate (-15 to -9 dB) 50, strong (≥ -8 dB) 44.

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 UW5EFR 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 UW5EFR

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
KN68 · 71 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
829 km (approx.)
Last such locator decoded
2026-11-01 16:48 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 UTCBandUW5EFR S/NCounterpartCounterpart S/NMsgsCapture
11-01 16:48 40m -18 / -16 OE3SGU -19 / - 2 Partial capture
10-27 17:02 40m -13 / - OK1FMG -1 / - 3 ✓ Closing observed
10-27 16:58 40m - / -15 DK6WH +7 / - 3 ✓ Closing fragment
10-23 06:09 40m -21 / -18 OH3OJ -1 / -12 11 ✓ Full exchange observed
10-17 17:32 40m -18 / - BG2ATH - / -17 3 ✓ Closing fragment
10-16 05:34 40m - / - S55A -3 / - 3 Partial capture
10-16 05:33 40m - / -16 HB9ELE +7 / - 2 ✓ Closing fragment
08-27 10:48 20m - / -13 SM5NBE -6 / - 2 ✓ Closing fragment
08-27 10:46 20m -8 / -11 SV2HTW -7 / -9 3 ✓ Full exchange observed
08-23 16:37 20m -6 / - OS9T - / - 3 Partial capture
08-23 14:18 20m -10 / - OE6HTG - / - 2 Partial capture
08-23 14:10 20m -7 / - BA3NZ -15 / -18 7 ✓ Closing observed
08-23 14:02 20m -4 / -13 ON4AOI +7 / -4 4 ✓ Full exchange observed
08-22 11:46 10m - / -15 SV1CQN -10 / - 3 ✓ Closing fragment
08-21 17:08 20m - / -14 EX7CQ -14 / - 2 Partial capture
08-21 17:03 20m - / -14 EX7CQ -16 / - 2 Partial capture
08-21 16:57 20m -13 / -8 HA1BF +16 / -1 4 ✓ Full exchange observed
08-21 10:43 20m - / -16 F4FSY -24 / - 2 Partial capture
08-21 10:41 20m -15 / -14 HA1BF +16 / -1 5 ✓ 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
061245 -22 1360  OH3OJ UW5EFR R-12 (x3)
061500  -2  282  UW5EFR OH3OJ RR73 (x2)
165830  +4  700  UW5EFR DK6WH -15 (x3)
170130 -17 1342  UN3P UW5EFR 73
170200 -12 1341  OK1FMG UW5EFR KN68
170245  -1 1254  UW5EFR OK1FMG RR73
170300 -14 1340  OK1FMG UW5EFR 73
164815 -18 1377  OE3SGU UW5EFR KN68
165000 -19 1014  UW5EFR OE3SGU -16
165445 -24 1363  SP6FME UW5EFR -01
20m 
UTC    dB Audio  Message
141115  -7  670  BA3NZ UW5EFR KN68 (x3)
141430 -15  672  UW5EFR BA3NZ RR73
141445  -8  666  BA3NZ UW5EFR 73
141845 -12 2030  OE6HTG UW5EFR KN68 (x2)
163745  -4  565  OS9T UW5EFR KN68 (x3)
104615 -11  856  UW5EFR SV2HTW -11
104630  -8 1520  SV2HTW UW5EFR R-09
104645  -3  856  UW5EFR SV2HTW RR73
104845  -6 1556  UW5EFR SM5NBE -13 (x2)
10m 
UTC    dB Audio  Message
114600 -17 1597  UW5EFR SV1CQN -15 (x3)

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