R9FDM — 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: European Russia Most frequent locator attributed to this token: LO87

Receiver-side FT8 activity involving R9FDM, decoded by SO8OO in southeastern Poland. 443 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 24 UTC dates in the available aggregate history. Observed between 2026-06-15 and 2026-10-14.

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 443 FT8 messages attributed to R9FDM as the transmitting token by decoded message structure across 24 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (55%), followed by 80 m (31%) and 40 m (14%). The busiest six-hour window was 15:00-21:00 UTC, containing 49% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -14 dB.

Overview

443
Messages attributed
24
UTC dates decoded
107
Active 15-min windows
-14 dB
Estimated median S/N

Bands

80m · 139 40m · 62 20m · 242
First attributed message: 2026-06-15
Last attributed message: 2026-10-14 23:23 UTC

Observed FT8 message patterns

Attributed sample
443 messages
Active dates
24 UTC dates
Estimated median S/N
-14 dB
Estimated 10th-90th percentile
-23 to -6 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 194, moderate (-15 to -9 dB) 157, strong (≥ -8 dB) 92.

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 R9FDM 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 R9FDM

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
LO87 · 272 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
2,432 km (approx.)
Last such locator decoded
2026-10-14 23:23 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 UTCBandR9FDM S/NCounterpartCounterpart S/NMsgsCapture
10-15 02:31 40m - / -10 TA2VUZ -8 / - 2 ✓ Closing fragment
10-14 23:22 80m -22 / - BI8FRF - / - 2 Partial capture
10-14 23:18 80m -15 / - Z61DX - / - 6 Partial capture
10-14 23:15 80m -12 / - RA9MX - / -2 5 ✓ Closing fragment
10-14 23:14 80m -16 / -18 SP1MGM +3 / -7 5 ✓ Full exchange observed
10-14 23:12 80m -12 / -7 RA3ZDU -20 / -9 4 ✓ Full exchange observed
10-14 23:11 80m -14 / - R6AR - / -3 3 ✓ Closing fragment
10-14 23:09 80m -14 / - SM7TZK -2 / -9 4 ✓ Closing observed
10-14 23:06 80m -14 / - RW9MZ - / -1 2 ✓ Closing fragment
10-14 23:06 80m -14 / - SP1MGM +9 / -9 4 Partial capture
10-14 23:04 80m -14 / -9 RV6HE -14 / -2 4 ✓ Full exchange observed
10-14 23:03 80m -12 / - R5AV 0 / -9 3 ✓ Closing observed
10-14 23:03 80m - / - ON4MAP -14 / - 5 Partial capture
10-14 17:47 80m - / -18 RW2Z -14 / - 2 ✓ Closing fragment
10-14 17:41 80m - / +1 UA4HBR -14 / - 2 ✓ Closing fragment
09-27 20:17 40m - / -19 F5SJC -13 / - 4 ✓ Closing fragment
09-27 20:07 40m - / -15 PA0ABM +7 / - 3 ✓ Closing fragment
09-27 20:05 40m - / -16 PA3FR -2 / - 3 ✓ Closing fragment
09-27 16:21 40m -18 / - 9V1PL - / -24 2 Partial capture
09-27 16:10 40m - / -8 DK9FE +15 / - 5 ✓ Closing fragment
09-27 00:49 160m - / -21 R5AV -1 / - 2 ✓ Closing fragment
09-27 00:36 80m - / -10 SM5DIC +2 / - 5 ✓ Closing fragment
09-26 14:30 40m - / -13 EU1CZ -4 / - 3 ✓ Closing fragment
09-26 14:28 40m - / -18 OZ6FH -9 / - 4 ✓ Closing fragment
09-20 23:13 40m - / -11 RV6G/P -22 / - 2 ✓ Closing fragment
09-20 23:04 40m -24 / -16 UA3AGW -16 / - 5 ✓ Closing observed
09-20 22:54 40m -18 / - VO1HP - / - 4 Partial capture
09-20 17:38 40m -16 / - UB3AVN/P - / -10 2 Partial capture
09-20 17:27 40m - / -15 DL5MO 0 / - 2 Partial capture
09-20 17:16 40m -22 / - TC2EYL -6 / -10 4 Partial capture
09-20 17:15 40m - / - SP9W -1 / - 2 Partial capture
09-14 02:11 80m - / -18 GX4RAF/P +9 / - 3 Partial capture
09-13 19:03 80m - / -14 RU3FM -2 / - 2 Partial capture
09-13 18:58 80m - / -16 R3PLA -13 / - 2 ✓ Closing fragment
09-13 18:55 80m -24 / -15 UA1TAN -14 / -3 5 ✓ Full exchange observed
09-13 18:50 80m - / -9 UA4NCX -14 / - 2 Partial capture
09-13 18:31 40m - / -12 ON1DGN -8 / - 2 ✓ Closing fragment
09-13 18:09 40m - / -18 R6HV/P -5 / - 3 Partial capture
09-13 05:12 40m - / -16 RW3QU -4 / - 3 ✓ Closing fragment
09-13 05:07 40m - / -6 UB3DLM -14 / - 2 ✓ Closing fragment
09-13 05:02 40m - / 0 R5AV -8 / - 2 ✓ Closing fragment
09-13 05:00 40m - / +1 RU3ACA -14 / - 2 ✓ Closing fragment
09-13 04:58 40m - / -11 R2GBR -11 / - 2 ✓ Closing fragment
09-13 04:57 40m - / +1 R2PX -12 / - 2 ✓ Closing fragment
09-13 04:40 40m - / -24 LZ936BA +5 / - 3 Partial capture
09-13 04:39 40m - / -2 UA3RAU -2 / - 2 Partial capture
09-13 04:23 40m - / -10 UA3RAU +11 / - 2 Partial capture
09-13 04:20 40m - / -11 RV3WL +4 / - 2 ✓ Closing fragment
09-12 16:55 80m - / -1 R5BM/M -7 / - 4 ✓ Closing fragment
09-12 16:51 80m - / -19 UN7LAN -15 / - 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
192130 -14 2076  R9FDM RL3ZA -07
200500  -7 1981  R9FDM PA3FR JO33 (x3)
200700  +4 1170  R9FDM PA0ABM JO21 (x3)
201730 -16 2138  R9FDM F5SJC JN05 (x4)
153515 -22 2021  BG0GAA R9FDM -14
153615 -24 2021  UB8SII R9FDM LO87
023145  -9 1706  R9FDM TA2VUZ -10 (x2)
80m 
UTC    dB Audio  Message
231500  +4 2219  R9FDM SP1MGM 73
231515 -12 2219  CQ R9FDM LO87
231545 -12 2218  RA9MX R9FDM LO87 (x5)
231815 -15 2218  Z61DX R9FDM LO87 (x6)
232230 -20 2217  BI8FRF R9FDM LO87 (x2)
160m 
UTC    dB Audio  Message
004845 -24 1496  R9FDM R8LCA 73
004945  -2 2057  R9FDM R5AV -21 (x2)
172800 -24 1287  R9FDM RZ0SW OO13
20m 
UTC    dB Audio  Message
191500  +5 2264  R9FDM F4NBB RR73
191530  -4 2264  R9FDM EA3CFV JN11 (x3)
191745  -7 2264  CU2JX R9FDM LO87
191815  -9 2264  CQ R9FDM LO87 (x2)
192000  -2 2451  R9FDM F5MOO JN07 (x3)
193645  +6 2297  R9FDM EA4LX/P -14 (x2)
193730 -12 2202  EA4LX/P R9FDM R-14
194100 -17 1975  R9FDM IU3VQM JN55 (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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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