R9JDA — 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: Asiatic Russia Most frequent locator attributed to this token: MP72

Receiver-side FT8 activity involving R9JDA, decoded by SO8OO in southeastern Poland. 74 FT8 messages attributed to this token as transmitter, on 20m, across 10 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-08-23.

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 74 FT8 messages attributed to R9JDA as the transmitting token by decoded message structure across 10 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Most decodes (74%) fell within the six-hour window 11:00-17:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

74
Messages attributed
10
UTC dates decoded
25
Active 15-min windows
-11 dB
Estimated median S/N

Bands

20m · 74
First attributed message: 2026-06-07
Last attributed message: 2026-08-23 16:50 UTC

Observed FT8 message patterns

Attributed sample
74 messages
Active dates
10 UTC dates
Estimated median S/N
-11 dB
Estimated 10th-90th percentile
-18 to -3 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 11, moderate (-15 to -9 dB) 34, strong (≥ -8 dB) 29.

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 R9JDA in decoded directed-looking exchanges:

Most frequent locator attributed to R9JDA

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
MP72 · 47 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
3,451 km (approx.)
Last such locator decoded
2026-08-23 16:48 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 UTCBandR9JDA S/NCounterpartCounterpart S/NMsgsCapture
10-21 02:03 80m - / -20 R9JX -2 / - 2 ✓ Closing fragment
10-15 16:04 80m - / -24 RK4FD -1 / - 4 Partial capture
10-15 15:54 80m - / -17 RV9CX -24 / - 3 ✓ Closing fragment
10-08 16:09 40m - / -21 RM1B -9 / - 2 Partial capture
10-08 15:32 40m - / -20 YO9PH +5 / - 2 ✓ Closing fragment
10-02 16:10 40m - / - RA4CGX -6 / - 2 Partial capture
10-02 16:05 40m - / -19 RZ6HBF -11 / - 3 ✓ Closing fragment
10-02 15:56 40m - / -13 RA3VX -10 / - 4 Partial capture
09-30 15:54 40m - / -16 RA3RUG -9 / - 3 ✓ Closing fragment
09-30 15:16 40m - / -18 RX7O -2 / - 2 ✓ Closing fragment
09-29 16:33 40m - / -20 RX3ASQ -8 / - 3 ✓ Closing fragment
09-11 17:40 80m - / -8 RN9N 0 / - 2 ✓ Closing fragment
08-31 11:53 20m - / -6 ON1DGN -7 / - 4 Partial capture
08-31 11:15 20m - / -18 R6ZBM -6 / - 2 ✓ Closing fragment
08-28 03:42 40m - / - N8TEN -15 / - 5 Partial capture
08-27 08:46 20m - / -22 PA0ARR -4 / - 4 Partial capture
08-25 17:25 60m - / -20 OH5KNL -17 / - 3 ✓ Closing fragment
08-25 17:02 40m - / -16 R1QF -14 / - 2 Partial capture
08-25 16:51 40m - / -14 UA4FKT +6 / - 4 ✓ Closing fragment
08-25 16:21 40m - / - UA4FKT +4 / - 2 Partial capture
08-25 15:39 40m - / -24 RL3QGD -9 / - 5 ✓ Closing fragment
08-25 15:35 40m - / -24 RZ6ALZ -18 / - 3 ✓ Closing fragment
08-25 15:31 40m - / -13 UB4FGK -14 / - 3 ✓ Closing fragment
08-24 15:59 40m - / -22 R7DX +10 / - 4 ✓ Closing fragment
08-23 16:48 20m -12 / -14 F8FFV +9 / - 5 ✓ Closing observed
08-23 16:44 20m -18 / - R1530IG - / -11 2 Partial capture
08-23 16:28 20m - / -13 IK1MJK/P -3 / - 3 Partial capture
08-22 18:59 20m - / -7 RK3AF -2 / - 2 ✓ Closing fragment
08-22 11:17 20m - / -10 SM7JKW -9 / - 3 Partial capture
08-22 11:09 20m - / -3 RY3D +10 / - 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
174030  +1 1958  R9JDA RN9N -08 (x2)
155115 -20  225  R9JDA RV9WJP MP72
155445 -23 2257  R9JDA RV9CX -17 (x3)
160145  -9 1182  R9JDA UB8A -01
160445  +0  930  R9JDA RK4FD LO22 (x4)
020315  -3 2554  R9JDA R9JX -20 (x2)
020700  -7 1687  R9JDA RY4D -18
40m 
UTC    dB Audio  Message
155615 -12  972  R9JDA RA3VX LO06 (x4)
160545 -11 1115  R9JDA RZ6HBF -19 (x3)
161015  -6 2620  R9JDA RA4CGX LO21 (x2)
023700 -22 1917  R9JDA UA4POO -21
153230  +6  539  R9JDA YO9PH -20 (x2)
160900 -10  765  R9JDA RM1B R-21 (x2)
153930 -13 1368  R9JDA R4FDK R-18
20m 
UTC    dB Audio  Message
165015 +13  439  R9JDA F8FFV 73
084600  -4 2692  R9JDA PA0ARR -22 (x4)
071145  -6 1078  R9JDA PE1MHY -10
071215  -9 1730  R9JDA UA3RRT R-07
071415  -7 1602  R9JDA ON3BEN -14
111515  -6 2421  R9JDA R6ZBM -18 (x2)
115330  -7 1612  R9JDA ON1DGN -06 (x4)
173445 -21 1486  R9JDA EA6Y -17
60m 
UTC    dB Audio  Message
172500 -16 2083  R9JDA OH5KNL -20 (x3)
173100 -17 1678  R9JDA OH/SM5MRW R-10

CW

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

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