OH4SS — 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: KP21

Receiver-side FT8 activity involving OH4SS, decoded by SO8OO in southeastern Poland. 1,514 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, across 44 UTC dates in the available aggregate history. Observed between 2026-07-25 and 2026-11-02.

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 1,514 FT8 messages attributed to OH4SS as the transmitting token by decoded message structure across 44 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (50%), followed by 80 m (44%) and 40 m (4%). Most decodes (59%) fell within the six-hour window 23:00-05:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (83%); the estimated median was +2 dB.

Overview

1,514
Messages attributed
44
UTC dates decoded
171
Active 15-min windows
+2 dB
Estimated median S/N

Bands

160m · 758 80m · 669 60m · 24 40m · 63
First attributed message: 2026-07-25
Last attributed message: 2026-11-02 05:07 UTC

Observed FT8 message patterns

Attributed sample
1,514 messages
Active dates
44 UTC dates
Estimated median S/N
+2 dB
Estimated 10th-90th percentile
-11 to +12 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 55, moderate (-15 to -9 dB) 205, strong (≥ -8 dB) 1,254.

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 OH4SS 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 OH4SS

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
KP21 · 893 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,301 km (approx.)
Last such locator decoded
2026-11-02 05:07 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 UTCBandOH4SS S/NCounterpartCounterpart S/NMsgsCapture
11-02 05:05 160m -4 / - RU4CK/P - / - 3 Partial capture
11-02 05:02 160m +1 / - 6W/IK2HKT - / - 4 Partial capture
11-02 04:58 160m +4 / - 6W/IK2HKT - / - 2 Partial capture
11-02 04:50 160m +1 / - <...> - / - 7 Partial capture
11-02 04:45 160m +4 / - 6W/IK2HKT - / - 5 Partial capture
11-02 04:37 160m +13 / - <...> - / - 14 Partial capture
11-02 04:30 160m +3 / - 6W/IK2HKT - / - 7 Partial capture
11-02 04:25 160m +1 / - SP9AMH/QRP - / - 8 Partial capture
11-02 04:22 160m 0 / - RU4CK/P - / - 6 Partial capture
11-02 04:17 160m +4 / - 6W/IK2HKT - / - 9 Partial capture
11-01 14:46 80m +6 / - KH8A - / - 2 Partial capture
11-01 03:38 60m -20 / - <...> - / - 3 Partial capture
10-30 05:27 60m -18 / - 6W/IK2HKT - / - 2 Partial capture
10-30 03:15 160m +4 / - 6W/IK2HKT - / - 16 Partial capture
10-30 03:10 160m 0 / - 6W/IK2HKT - / -4 3 Partial capture
10-30 03:03 160m +1 / - RA6MQ/P - / -4 10 Partial capture
10-30 02:53 160m +5 / - 6W/IK2HKT - / - 11 Partial capture
10-30 02:48 160m +6 / - <...> - / - 10 Partial capture
10-29 19:51 160m +10 / - JA5BZL - / -9 2 ✓ Closing fragment
10-29 19:50 160m +9 / - OH1TSM +10 / +2 5 ✓ Full exchange observed
10-29 19:47 160m +6 / - UA4CKN - / -14 2 ✓ Closing fragment
10-29 19:47 160m +5 / -2 DO2HG -1 / -8 8 ✓ Full exchange observed
10-29 19:46 160m +12 / - JH7BDS - / -11 2 ✓ Closing fragment
10-29 19:44 160m +4 / - VK5SFA - / -16 4 ✓ Closing fragment
10-29 19:36 160m +6 / - VK5SFA - / - 6 Partial capture
10-29 19:35 160m -4 / - JE7GXQ - / -20 2 ✓ Closing fragment
10-29 19:34 160m +2 / - JA1RTX - / -15 2 ✓ Closing fragment
10-29 19:32 160m +9 / - JA5MHD -21 / -7 4 ✓ Closing observed
10-29 19:30 160m +6 / - JA4LXY - / -10 4 ✓ Closing fragment
10-29 19:22 160m +5 / - A93MO - / - 6 Partial capture
10-29 15:34 160m +13 / - XX9TXN - / - 3 Partial capture
10-29 15:29 160m +8 / - XX9TXN - / - 2 Partial capture
10-29 15:20 160m -2 / - XX9TXN - / -17 5 Partial capture
10-29 15:13 160m -1 / - XX9TXN - / -14 9 Partial capture
10-29 15:08 160m -2 / - XX9TXN - / - 6 Partial capture
10-29 12:57 80m -10 / - NL8F - / - 8 Partial capture
10-29 12:49 80m -11 / - NL8F - / - 8 Partial capture
10-29 05:17 80m -11 / - 6W/IK2HKT - / -25 5 Partial capture
10-29 05:01 80m - / - OK2CNI +13 / - 7 Partial capture
10-29 04:57 80m - / - OM1AIT -2 / - 2 Partial capture
10-29 04:56 80m -8 / - HF50HSP - / - 5 Partial capture
10-29 04:49 80m +10 / - HF50HSP - / - 9 Partial capture
10-27 16:21 160m -1 / - A93MO - / - 2 Partial capture
10-27 16:16 160m +4 / - A93MO - / - 6 Partial capture
10-27 14:00 160m +1 / - XX9TXN - / - 5 Partial capture
10-23 05:32 40m - / -5 DG1KDD -3 / - 3 ✓ Closing fragment
10-23 05:31 40m - / -4 RC9WC -16 / - 2 ✓ Closing fragment
10-23 05:28 40m -13 / - RZ4FWA - / -5 4 ✓ Closing fragment
10-22 09:41 40m -11 / - W1AW/9 - / - 3 Partial capture
10-22 02:09 160m +4 / - AE5B - / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

160m 
UTC    dB Audio  Message
045115  -5  252  <...> OH4SS KP21 (x5)
045545  -6 2044  6W/IK2HKT OH4SS KP21 (x7)
050545  -5 2266  RU4CK/P OH4SS KP21 (x3)
80m 
UTC    dB Audio  Message
125130  -8 2023  NL8F OH4SS KP21 (x3)
125245  -1 1238  OH4SS OH1TSM KP11
125300 -10 2024  NL8F OH4SS KP21 (x9)
144615  +6  343  KH8A OH4SS KP21 (x2)
60m 
UTC    dB Audio  Message
031415 -16 2079  9T0MD OH4SS KP21 (x7)
025830  -5  306  OH4SS VP2MAW -08 (x2)
052715 -19 2337  <6W/IK2HKT> OH4SS KP21 (x2)
033845 -18 2210  <...> OH4SS KP21 (x3)
034300 -16 1439  OH4SS OK1BN R+00
40m 
UTC    dB Audio  Message
052600  -7 1742  OH4SS P4/WE9V -13
052615 -22 1867  HB9ITZ/P OH4SS R-03
052700 -13 1863  OH4SS SV1DKR KM18
052715 -18 1866  HA5LB OH4SS -11
052815 -15 1867  RZ4FWA OH4SS -05 (x4)
053000  -3 1842  OH4SS F4FSY -15
053100 -14 1282  OH4SS RC9WC -04 (x2)
053200  -3 2159  OH4SS DG1KDD JO31 (x3)
053415 -13  608  V47NT OH4SS KP21
20m 
UTC    dB Audio  Message
050815  -4 2416  OH4SS R6FX LN14 (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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