OH1EFW — 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: Finland Most frequent locator attributed to this token: KP00

Receiver-side FT8 activity involving OH1EFW, decoded by SO8OO in southeastern Poland. 35 FT8 messages attributed to this token as transmitter, on 80m, across 4 UTC dates in the available aggregate history. Observed between 2026-10-25 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 35 FT8 messages attributed to OH1EFW as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (100%). Several six-hour UTC windows tied for the largest share (97%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's moderate S/N range (74%); the estimated median was -13 dB.

Overview

35
Messages attributed
4
UTC dates decoded
10
Active 15-min windows
-13 dB
Estimated median S/N

Bands

80m · 35
First attributed message: 2026-10-25
Last attributed message: 2026-11-01 17:55 UTC

Observed FT8 message patterns

Attributed sample
35 messages
Active dates
4 UTC dates
Estimated median S/N
-13 dB
Estimated 10th-90th percentile
-20 to -11 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 9, moderate (-15 to -9 dB) 26, strong (≥ -8 dB) 0.

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 OH1EFW 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 OH1EFW

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
KP00 · 14 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,176 km (approx.)
Last such locator decoded
2026-11-01 17:55 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 UTCBandOH1EFW S/NCounterpartCounterpart S/NMsgsCapture
11-01 17:55 80m - / - HF5A +9 / - 3 Partial capture
11-01 17:36 80m - / -8 LY3BFH +9 / - 4 ✓ Closing fragment
10-31 17:02 80m - / -16 DO2XB +6 / - 6 ✓ Closing fragment
10-31 16:56 80m -10 / - DO2MOG - / -17 2 Partial capture
10-31 16:56 80m -10 / -13 SP5JMA +14 / - 5 Partial capture
10-31 16:33 80m -13 / - RK6OQ -11 / -17 8 ✓ Closing observed
10-31 16:32 80m -12 / -9 DK7ZT +4 / -9 5 ✓ Full exchange observed
10-31 16:24 80m - / -14 UA3IAG -9 / - 2 ✓ Closing fragment
10-31 16:18 80m -14 / -11 RJ3DC -8 / -1 4 ✓ Full exchange observed
10-31 16:07 80m - / - UA3IAG +3 / - 3 Partial capture
10-31 14:11 80m -18 / -2 DK7ZT -5 / -21 6 Partial capture
10-31 14:11 80m -20 / -19 RD5D +7 / +3 5 ✓ Full exchange observed
10-31 14:10 80m -21 / -4 EU6KA -15 / -8 5 ✓ Full exchange observed
10-26 19:52 80m - / - OH2FQV +1 / - 5 Partial capture
10-26 19:03 80m - / - DO5AX -20 / - 2 Partial capture
10-26 18:54 80m - / -16 R1AV +5 / - 3 ✓ Closing fragment
10-26 18:52 80m - / - IK3BNO +9 / - 3 Partial capture
10-26 18:52 80m - / -11 SP8ISO -2 / - 4 ✓ Closing fragment
10-26 18:50 80m - / -2 DG6ITP +3 / - 3 ✓ Closing fragment
10-26 18:44 80m - / - DL1UDO -4 / - 2 Partial capture
10-26 18:44 80m - / - OE/PD1SCO -9 / - 3 Partial capture
10-26 18:43 80m -16 / -3 DG1BRW -1 / -20 5 ✓ Full exchange observed
10-26 18:43 80m - / - SP8ISO -5 / - 2 Partial capture
10-26 18:42 80m - / - E70SZ -1 / - 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
142000 -12 1604  CQ OH1EFW KP00 (x6)
173600  +9 1507  OH1EFW LY3BFH -08 (x4)
175500  +4 2220  OH1EFW YO9HP -19
175500  +4 2420  OH1EFW HF5A JO92
175515 -13 1507  CQ OH1EFW KP00
175530 +13 2797  OH1EFW HF5A JO92 (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