OK2ZAW — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Czech Republic Most frequent locator attributed to this token: JN79

Receiver-side FT8 activity involving OK2ZAW, decoded by SO8OO in southeastern Poland. 284 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 14 UTC dates in the available aggregate history. Observed between 2026-07-15 and 2026-09-18.

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 284 FT8 messages attributed to OK2ZAW as the transmitting token by decoded message structure across 14 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (77%), followed by 80 m (21%) and 20 m (1%). Several six-hour UTC windows tied for the largest share (96%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (90%); the estimated median was +7 dB.

Overview

284
Messages attributed
14
UTC dates decoded
39
Active 15-min windows
+7 dB
Estimated median S/N

Bands

80m · 61 40m · 219 20m · 4
First attributed message: 2026-07-15
Last attributed message: 2026-09-18 22:40 UTC

Observed FT8 message patterns

Attributed sample
284 messages
Active dates
14 UTC dates
Estimated median S/N
+7 dB
Estimated 10th-90th percentile
-8 to +21 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 3, moderate (-15 to -9 dB) 25, strong (≥ -8 dB) 256.

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 OK2ZAW 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 OK2ZAW

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
JN79 · 94 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
491 km (approx.)
Last such locator decoded
2026-08-25 21:08 UTC

Other locator fields attributed to this token: JO80 (69).

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 UTCBandOK2ZAW S/NCounterpartCounterpart S/NMsgsCapture
09-18 22:39 80m +22 / +7 VO1HP -22 / -10 4 ✓ Full exchange observed
09-18 22:38 80m - / -5 RY3F +2 / - 2 Partial capture
09-18 22:36 80m +13 / - KP4AA - / -24 4 ✓ Closing fragment
09-18 22:15 80m - / - DL9KM -2 / - 7 Partial capture
09-18 22:15 80m - / - DO8JB -9 / - 13 Partial capture
09-18 22:14 80m - / - DO4MTB +7 / - 4 Partial capture
09-18 22:11 80m - / - IZ8KVW -9 / - 3 Partial capture
09-18 22:10 80m - / -2 R5VDJ -14 / - 3 Partial capture
09-18 22:08 80m - / - DO1TOM -12 / - 10 Partial capture
09-18 22:03 80m - / - SP3BZU +6 / - 4 Partial capture
09-18 22:01 80m +13 / - 7Z1BQ - / - 3 Partial capture
09-15 19:18 40m - / - DJ0MAB +8 / - 3 Partial capture
09-15 19:17 40m -16 / - RI1FJZ - / -9 3 ✓ Closing fragment
09-10 21:21 40m - / - HG8LXL -14 / - 2 Partial capture
09-10 21:20 40m +2 / - HL2IDT - / -16 2 ✓ Closing fragment
09-10 21:20 40m - / - PD0LBY -14 / - 3 Partial capture
09-10 21:14 40m - / -9 JA5MHD 0 / - 2 ✓ Closing fragment
09-10 21:07 40m - / - HG8LXL -18 / - 3 Partial capture
09-10 21:04 40m - / - F4BJN -16 / - 2 Partial capture
09-10 21:04 40m - / - PD0LBY -13 / - 4 Partial capture
09-01 21:41 40m -13 / - XU7AKP - / - 4 Partial capture
09-01 21:34 40m -10 / +2 F8MRQ -6 / -5 6 ✓ Full exchange observed
09-01 21:29 40m -10 / - VK3DRN - / -21 4 ✓ Closing fragment
09-01 21:27 40m -9 / - BH4HTD - / -12 3 ✓ Closing fragment
09-01 21:20 40m -7 / - JA8LHN - / -13 3 Partial capture
09-01 21:20 40m - / - PD0LBY -10 / - 2 Partial capture
09-01 21:18 40m - / - F8MRQ -1 / - 2 Partial capture
09-01 21:09 40m -4 / -9 D2ACE -14 / - 4 ✓ Closing observed
09-01 21:06 40m -3 / - V51WH - / -15 5 ✓ Closing fragment
09-01 20:56 40m +6 / -6 JF1UVJ -5 / - 6 ✓ Closing observed
09-01 20:56 40m +1 / - JH0MUE - / -12 2 ✓ Closing fragment
09-01 20:43 40m +6 / - JA0BZY - / -11 2 ✓ Closing fragment
09-01 20:37 40m - / - F5PBG +4 / - 6 Partial capture
09-01 20:37 40m +5 / - UA0LQE - / -14 2 ✓ Closing fragment
09-01 20:30 40m +6 / - BH5HIE - / -14 2 ✓ Closing fragment
09-01 20:26 40m - / - F5PBG +2 / - 4 Partial capture
09-01 20:24 40m +10 / - VK6BAD - / -14 4 ✓ Closing fragment
09-01 19:38 40m +11 / - BD6KDG - / -14 3 ✓ Closing fragment
09-01 19:35 40m +8 / - JH1CJY - / -16 2 ✓ Closing fragment
09-01 19:32 40m +10 / - ZL1VAH - / -18 5 ✓ Closing fragment
09-01 19:31 40m +8 / - BD8FWI - / -11 2 Partial capture
09-01 19:29 40m +12 / -5 JH5LCN -16 / -3 3 ✓ Full exchange observed
09-01 19:28 40m +10 / - BG7KEO - / -13 2 ✓ Closing fragment
08-31 21:37 40m -9 / - RI1FJL - / - 9 Partial capture
08-31 06:50 40m - / - R2AL +2 / - 3 Partial capture
08-31 06:50 40m +4 / - WA4TED - / -19 2 ✓ Closing fragment
08-31 06:48 40m - / - YO3GNF -2 / - 2 Partial capture
08-31 06:47 40m +8 / - IW2DNI - / -9 2 ✓ Closing fragment
08-31 06:45 40m +6 / - HI3RRR - / - 2 Partial capture
08-30 20:50 40m +9 / - BA7IWL - / -8 6 Partial capture

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
221915 -16 1503  OK2ZAW DO8JB JO32 (x5)
223600  +5  374  KP4AA OK2ZAW JO80 (x4)
223815  +4  373  OK2ZAW RY3F -05 (x2)
223945 +21  374  VO1HP OK2ZAW JO80
224000 -22 2692  OK2ZAW VO1HP +07
224015 +21  374  VO1HP OK2ZAW R-10 (x2)
40m 
UTC    dB Audio  Message
212000 -12 1533  OK2ZAW PD0LBY JO22
212015  +1 2259  HL2IDT OK2ZAW -16
212030 -12 1533  OK2ZAW PD0LBY JO22
212045  +3 2259  HL2IDT OK2ZAW RR73
212130 -19 1533  OK2ZAW PD0LBY JO22
212130 -15 1647  OK2ZAW HG8LXL KN06 (x2)
191715 -13 2413  RI1FJZ OK2ZAW JO80 (x3)
191830  +9 2414  OK2ZAW DJ0MAB JN49 (x3)
202915 -10  395  VK2LAW OK2ZAW JO80
204645  -9  457  OK2ZAW RA4FUT LO23
20m 
UTC    dB Audio  Message
101815  -5  573  CU3HN OK2ZAW JN79 (x4)
10m 
UTC    dB Audio  Message
091200  -5 1279  OK2ZAW UX3HX KN79 (x2)
091430 -10 1259  OK2ZAW LZ4VR KN13
091600 -20 1278  OK2ZAW UX3HX KN79

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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