9A/DK9RC — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Croatia Most frequent locator attributed to this token: JN75

Receiver-side FT8 activity involving 9A/DK9RC, decoded by SO8OO in southeastern Poland. 528 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 8 UTC dates in the available aggregate history. Observed between 2026-09-11 and 2026-09-20.

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 528 FT8 messages attributed to 9A/DK9RC as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (97%), followed by 80 m (3%). Several six-hour UTC windows tied for the largest share (77%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (89%); the estimated median was +1 dB.

Overview

528
Messages attributed
8
UTC dates decoded
49
Active 15-min windows
+1 dB
Estimated median S/N

Bands

80m · 15 40m · 513
First attributed message: 2026-09-11
Last attributed message: 2026-09-20 07:13 UTC

Observed FT8 message patterns

Attributed sample
528 messages
Active dates
8 UTC dates
Estimated median S/N
+1 dB
Estimated 10th-90th percentile
-9 to +10 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 50, strong (≥ -8 dB) 471.

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 9A/DK9RC 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 9A/DK9RC

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
JN75 · 5 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
708 km (approx.)
Last such locator decoded
2026-09-16 21:52 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 UTCBand9A/DK9RC S/NCounterpartCounterpart S/NMsgsCapture
09-20 07:46 40m - / -15 SQ9IDE +14 / - 4 Partial capture
09-20 07:20 40m - / - SP9MQS +11 / - 7 Partial capture
09-20 07:13 40m -2 / - DK2MAX - / -3 2 ✓ Closing fragment
09-20 07:12 40m +1 / - <...> -6 / - 3 ✓ Closing fragment
09-20 06:58 40m - / - YO6MP +1 / - 5 Partial capture
09-20 06:48 40m -5 / - <...> - / - 9 ✓ Closing fragment
09-20 06:41 40m -3 / -2 SP4OIK +1 / -6 9 Partial capture
09-20 06:40 40m -4 / - <...> -10 / - 2 ✓ Closing fragment
09-20 06:38 40m -4 / - MI0NWA - / -4 4 Partial capture
09-20 06:32 40m -4 / - <...> -7 / - 8 ✓ Closing fragment
09-20 06:23 40m -12 / - <...> -2 / - 4 ✓ Closing fragment
09-20 06:15 40m -7 / - <...> -13 / - 2 ✓ Closing fragment
09-20 06:12 40m -7 / - <...> -1 / - 2 ✓ Closing fragment
09-20 06:11 40m -6 / - OZ3MC - / -6 2 Partial capture
09-20 06:05 40m -2 / - OZ3MC - / - 3 Partial capture
09-20 06:00 40m -2 / - N1IWP - / - 2 Partial capture
09-20 05:37 40m -1 / - ZL1VAH - / -17 7 Partial capture
09-20 05:34 40m -2 / - K7ACZ - / - 6 Partial capture
09-20 05:31 40m -1 / - N1IWP - / - 4 Partial capture
09-19 03:28 40m - / -15 SV9AUP -3 / - 2 Partial capture
09-18 18:22 40m - / - RU3T -2 / - 3 Partial capture
09-18 13:43 40m - / - DM5ME -6 / - 3 Partial capture
09-18 08:07 40m - / - SP9MQS +6 / - 2 Partial capture
09-18 08:04 40m - / - SP9MQS +7 / - 2 Partial capture
09-18 05:48 40m - / - SP3QDM +25 / - 12 Partial capture
09-18 05:34 40m - / - F4VTR -4 / - 5 Partial capture
09-18 04:59 40m +6 / - <...> +17 / - 5 ✓ Closing fragment
09-18 04:57 40m +7 / -24 I2RFJ +15 / -7 6 Partial capture
09-18 04:53 40m +6 / - <...> - / - 8 Partial capture
09-18 04:49 40m +10 / - <...> - / - 2 Partial capture
09-18 04:47 40m +12 / - KJ5PTH - / - 4 Partial capture
09-18 04:46 40m +10 / - <...> - / - 2 Partial capture
09-18 04:32 40m - / - IU4TRM -10 / - 2 Partial capture
09-17 20:35 40m - / -26 IZ8DBJ -5 / - 5 Partial capture
09-17 20:30 40m - / - IZ8DBJ -6 / - 3 Partial capture
09-17 19:14 40m - / - DD1OO +4 / - 4 Partial capture
09-17 19:04 40m 0 / - <...> - / - 3 Partial capture
09-17 13:14 40m - / - DJ0MAB -19 / - 3 Partial capture
09-17 10:11 40m - / - SQ9OUG -8 / - 2 Partial capture
09-17 08:00 40m - / - DM3AWE -18 / - 2 Partial capture
09-17 06:08 40m +2 / - <...> -11 / - 4 ✓ Closing fragment
09-17 06:07 40m -4 / -6 F1IQH -8 / -6 3 Partial capture
09-17 06:04 40m -2 / - SP6AXW - / -1 2 Partial capture
09-16 21:50 40m -1 / - JE6WOQ - / 0 8 ✓ Closing fragment
09-16 21:42 40m -12 / - HL5BMX - / - 2 Partial capture
09-16 21:37 40m -8 / - SM0IJS - / -2 4 Partial capture
09-16 21:10 40m -14 / - <...> - / - 2 Partial capture
09-16 21:02 40m -10 / - YT2VVV - / -1 2 Partial capture
09-16 21:01 40m -6 / - <...> - / - 3 ✓ Closing fragment
09-16 20:07 40m - / - <...> 0 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
071245  +0 2855  <...> 9A/DK9RC
071315  -2 2855  DK2MAX 9A/DK9RC R-03
071330  -6  241  9A/DK9RC <...> RR73
071345  -1 2855  <DK2MAX> 9A/DK9RC 73
072045 +11  884  9A/DK9RC SP9MQS JN99 (x7)
074600 +13 2975  9A/DK9RC SQ9IDE JN99 (x4)
80m 
UTC    dB Audio  Message
054345 -16 1500  <...> 9A/DK9RC
054415 -17 1500  9A5E 9A/DK9RC R+17
054430  +7  780  9A/DK9RC <...> RR73
054445 -14 1500  <...> 9A/DK9RC 73
054515 -12 1500  F5RRS 9A/DK9RC +05 (x2)
054615 -14 1500  <...> 9A/DK9RC RR73
054630  +0  555  9A/DK9RC <...> 73
054815 -13 1500  CQ 9A/DK9RC (x3)
055030 -15 1500  <...> 9A/DK9RC
055100 -15 1500  HA3TBL 9A/DK9RC R+11
055115  -2 1762  9A/DK9RC <...> RR73
055130 -12 1500  <...> 9A/DK9RC 73

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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