OM3SX — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Slovak Republic Most frequent locator attributed to this token: KN08

Receiver-side FT8 activity involving OM3SX, decoded by SO8OO in southeastern Poland. 2,138 FT8 messages attributed to this token as transmitter, on 160m, across 13 UTC dates in the available aggregate history. Observed between 2026-08-23 and 2026-10-07.

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 2,138 FT8 messages attributed to OM3SX as the transmitting token by decoded message structure across 13 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (100%). Most decodes (76%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (98%); the estimated median was +8 dB.

Overview

2,138
Messages attributed
13
UTC dates decoded
169
Active 15-min windows
+8 dB
Estimated median S/N

Bands

160m · 2,138
First attributed message: 2026-08-23
Last attributed message: 2026-10-07 16:16 UTC

Observed FT8 message patterns

Attributed sample
2,138 messages
Active dates
13 UTC dates
Estimated median S/N
+8 dB
Estimated 10th-90th percentile
-1.3 to +18 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 38, strong (≥ -8 dB) 2,096.

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 OM3SX 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 OM3SX

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
KN08 · 1,207 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
170 km (approx.)
Last such locator decoded
2026-10-07 16:15 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 UTCBandOM3SX S/NCounterpartCounterpart S/NMsgsCapture
10-07 16:15 160m +16 / 0 DF0KK -16 / -1 5 ✓ Full exchange observed
10-07 16:11 160m +13 / - DL1GPS - / - 2 ✓ Closing fragment
10-07 16:10 160m +12 / -4 R9CS/P -8 / -8 9 ✓ Full exchange observed
10-07 16:06 160m +12 / +6 DO5OT -8 / +9 5 ✓ Full exchange observed
10-07 16:03 160m +16 / -2 IZ8GGE -12 / +5 3 ✓ Full exchange observed
10-07 15:56 160m +14 / +9 HA1DLI -6 / +4 4 ✓ Full exchange observed
10-07 15:56 160m +15 / - R4DD -12 / -15 6 ✓ Closing observed
10-07 15:56 160m +12 / -9 RW9AW -12 / -9 5 ✓ Full exchange observed
10-07 15:53 160m +13 / -4 RU3X -11 / -3 6 ✓ Full exchange observed
10-07 15:44 160m +19 / - RL3DA -12 / +8 3 ✓ Closing observed
10-07 15:44 160m +20 / +1 RU3X -13 / -1 5 ✓ Full exchange observed
10-07 15:42 160m +18 / - R8KAW/P - / - 2 Partial capture
10-07 15:38 160m +12 / - R0SDC - / - 2 Partial capture
10-07 15:36 160m +12 / -17 R4RJ -24 / -22 4 ✓ Full exchange observed
10-07 15:35 160m +13 / - R0SDC - / - 2 Partial capture
10-07 15:30 160m +12 / - R3YBG -16 / -12 4 ✓ Closing observed
10-07 15:29 160m +14 / - S52F -9 / +7 3 ✓ Closing observed
10-07 15:26 160m +13 / -7 RA3QTT +4 / +10 5 ✓ Full exchange observed
10-07 15:24 160m +14 / - RX6DA - / -17 4 ✓ Closing fragment
10-07 14:50 160m +14 / - RA0AY - / - 2 Partial capture
10-07 14:48 160m +16 / -23 OM2WW -4 / -4 6 ✓ Full exchange observed
10-07 14:45 160m +15 / - R0CBI - / - 2 Partial capture
10-07 14:37 160m +10 / - SV8DCY - / -9 2 ✓ Closing fragment
10-07 14:34 160m +6 / -15 RA3UEV -15 / -4 5 ✓ Full exchange observed
10-07 14:34 160m +6 / -7 RY3K -4 / +1 6 ✓ Full exchange observed
10-07 14:28 160m +8 / - R5AV - / -2 3 ✓ Closing fragment
10-07 14:23 160m +5 / -15 R5AV -6 / +2 4 ✓ Full exchange observed
10-07 14:20 160m +8 / - RZ6CO - / -3 4 ✓ Closing fragment
10-06 22:03 160m +14 / -5 EI6HIB -8 / -8 8 ✓ Full exchange observed
10-06 22:01 160m +13 / - SP2EWQ +18 / - 4 ✓ Closing observed
10-06 22:00 160m +8 / -3 G8GNI -8 / - 5 ✓ Closing observed
10-06 21:56 160m +8 / - CT1EEX - / - 4 Partial capture
10-06 21:55 160m +15 / - DD6WF +6 / - 2 ✓ Closing observed
10-06 21:53 160m +18 / - GW3TYI -20 / -14 3 ✓ Closing observed
10-06 21:50 160m +14 / +6 DD6WF +14 / +1 6 ✓ Full exchange observed
10-06 21:50 160m +14 / -19 GM6URC -24 / -13 12 Partial capture
10-06 21:47 160m +20 / -1 G8GNI -2 / +4 6 ✓ Full exchange observed
10-06 21:46 160m +17 / +7 IK6BSN -5 / -3 7 ✓ Full exchange observed
10-06 21:43 160m +17 / 0 G3UHU +7 / -5 5 ✓ Full exchange observed
10-06 21:41 160m +15 / -5 SV5ADM -18 / -12 4 ✓ Full exchange observed
10-06 21:41 160m +15 / - GM6URC - / - 3 Partial capture
10-06 21:39 160m +10 / - TA4RC -19 / -21 3 ✓ Closing observed
10-06 21:36 160m +10 / -19 R8LCA -19 / -13 5 ✓ Full exchange observed
10-06 21:35 160m +6 / +2 SM2OTU -17 / -14 6 ✓ Full exchange observed
10-06 21:34 160m +16 / -19 2E0FVN -9 / -15 3 ✓ Full exchange observed
10-06 21:31 160m +19 / +2 EI5GSB -9 / - 3 Partial capture
10-06 21:31 160m +17 / - S57MPU +11 / - 5 ✓ Full exchange observed
10-06 21:28 160m +12 / - TA4RC - / -20 7 Partial capture
10-06 21:27 160m +10 / -16 2E0FVN -6 / -18 3 Partial capture
10-06 21:26 160m +1 / -10 RA3RDN -10 / -6 4 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

160m 
UTC    dB Audio  Message
161130 +18  406  DL1GPS OM3SX KN08
161145  -5 2718  OM3SX R9CS/P -04 (x2)
161230  +8  406  DL1GPS OM3SX 73
161300 +12  406  R9CS/P OM3SX R-08
161345  -6 2718  OM3SX R9CS/P +07
161400  +9  406  R9CS/P OM3SX R-06
161415 -11 2717  OM3SX R9CS/P RR73
161430 +12  406  R9CS/P OM3SX 73
161500 +12  406  CQ OM3SX KN08
161530 +15  406  DF0KK OM3SX KN08
161545 -13 2264  OM3SX DF0KK +00
161600 +15  406  DF0KK OM3SX R-01
161615 -18 2264  OM3SX DF0KK RR73
161630 +17  406  DF0KK OM3SX 73
10m 
UTC    dB Audio  Message
070545 -11  657  OM3SX SV2CLJ RR73
074300  -7 2347  OM3SX DL8TV -02 (x2)
080545  -1 2345  OM3SX IZ3BUR +06 (x4)
080945 -17 1969  OM3SX OZ3AAF 73
082115  +2  519  OM3SX IV3KZF JN66
083000  -4 2638  OM3SX F4MLW -01 (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.

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