OK1DTN — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Czech Republic Most frequent locator attributed to this token: JO70

Receiver-side FT8 activity involving OK1DTN, decoded by SO8OO in southeastern Poland. 152 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-09-04.

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 152 FT8 messages attributed to OK1DTN as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (81%), followed by 160 m (14%) and 60 m (4%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (99%); the estimated median was +7 dB.

Overview

152
Messages attributed
8
UTC dates decoded
19
Active 15-min windows
+7 dB
Estimated median S/N

Bands

160m · 22 80m · 123 60m · 6 40m · 1
First attributed message: 2026-06-08
Last attributed message: 2026-09-04 21:28 UTC

Observed FT8 message patterns

Attributed sample
152 messages
Active dates
8 UTC dates
Estimated median S/N
+7 dB
Estimated 10th-90th percentile
-3 to +13 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 0, strong (≥ -8 dB) 151.

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 OK1DTN 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 OK1DTN

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
JO70 · 26 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
487 km (approx.)
Last such locator decoded
2026-09-04 20:40 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 UTCBandOK1DTN S/NCounterpartCounterpart S/NMsgsCapture
09-04 21:23 80m +7 / - RI1FJL - / -19 10 ✓ Closing fragment
09-04 21:09 80m +6 / - RI1FJL - / -19 20 Partial capture
09-04 20:40 160m -1 / - RI1FJL - / -24 11 Partial capture
09-04 20:36 160m 0 / - OK1DXR +2 / +7 6 ✓ Full exchange observed
09-04 20:35 160m +2 / - JA4LXY - / -24 2 ✓ Closing fragment
09-04 20:31 160m +2 / - RI1FJL - / -22 6 Partial capture
09-03 21:28 80m +5 / - <...> - / +3 2 Partial capture
07-06 21:44 80m +12 / +3 DK7UY -5 / +3 7 ✓ Full exchange observed
07-06 21:43 80m +14 / +4 DL7GP -2 / +4 7 ✓ Full exchange observed
07-06 21:43 80m +8 / 0 RA3X +2 / +7 5 ✓ Full exchange observed
07-06 19:56 80m +2 / - R2AKN - / -10 10 Partial capture
07-04 22:39 80m +6 / - EH2WWA - / -20 5 Partial capture
07-04 22:32 80m +7 / +10 LA1WWA -11 / -4 11 ✓ Full exchange observed
07-04 22:30 80m +2 / +5 OH5WWA +2 / +5 4 ✓ Full exchange observed
07-04 22:26 80m +9 / - II2WWA 0 / +7 5 ✓ Full exchange observed
07-04 22:23 80m +3 / - SN0WWA - / -5 3 ✓ Closing fragment
07-04 22:20 80m +7 / - SC9WWA - / +1 4 Partial capture
07-04 22:11 80m - / - 9A3AUH +8 / - 4 Partial capture
07-04 22:10 80m +10 / +5 II7WWA 0 / -1 5 ✓ Full exchange observed
07-04 22:08 80m +9 / - SK3WWA +6 / +8 4 ✓ Closing observed
07-04 22:06 80m +8 / 0 IR0WWA -15 / -14 4 ✓ Full exchange observed
07-04 22:05 80m +11 / +10 SN4WWA +1 / +5 2 Partial capture
07-02 22:23 20m - / -3 II1WWA -17 / - 2 ✓ Closing fragment
07-02 22:06 80m +13 / - SN4WWA +13 / - 5 ✓ Full exchange observed
07-02 22:04 80m +7 / - SN2WWA +8 / - 4 ✓ Closing observed
07-02 22:03 80m +13 / - SD9WWA -2 / - 4 Partial capture
07-02 22:02 80m - / -3 EA1JWG -14 / - 4 Partial capture
07-02 22:00 80m +10 / -8 SK3WWA +1 / -12 5 ✓ Full exchange observed
07-02 21:58 80m +13 / -6 SN0WWA -5 / -7 4 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
211900 +13 1074  RI1FJL OK1DTN -19 (x14)
212845 -13  329  OK1DTN RR73; EA1B <RI1FJL> -06
160m 
UTC    dB Audio  Message
203700  +2 1295  OK1DTN OK1DXR R+21
203715  +1 1076  OK1DXR OK1DTN RR73
203730  +2 1295  OK1DTN OK1DXR 73
203815  -7 1076  JA5BZL OK1DTN -22
204015  -7 1075  RI1FJL OK1DTN JO70 (x11)
40m 
UTC    dB Audio  Message
225800 -18 1986  OK1DTN GB2WWA RR73
163530  -9  575  OK1DTN II3WWA RR73
212415 -18 1061  <...> OK1DTN JO70
20m 
UTC    dB Audio  Message
222300 -13 1324  OK1DTN II1WWA R-03 (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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