SH5RJX — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Sweden Most frequent locator attributed to this token: JO78

Receiver-side FT8 activity involving SH5RJX, decoded by SO8OO in southeastern Poland. 731 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 63 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-10.

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 731 FT8 messages attributed to SH5RJX as the transmitting token by decoded message structure across 63 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (77%), followed by 20 m (14%) and 10 m (9%). Most decodes (51%) fell within the six-hour window 18:00-00:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -14 dB.

Overview

731
Messages attributed
63
UTC dates decoded
160
Active 15-min windows
-14 dB
Estimated median S/N

Bands

40m · 563 20m · 101 10m · 67
First attributed message: 2026-06-07
Last attributed message: 2026-10-10 16:54 UTC

Observed FT8 message patterns

Attributed sample
731 messages
Active dates
63 UTC dates
Estimated median S/N
-14 dB
Estimated 10th-90th percentile
-22 to -5 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 308, moderate (-15 to -9 dB) 242, strong (≥ -8 dB) 181.

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 SH5RJX 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 SH5RJX

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
JO78 · 309 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,048 km (approx.)
Last such locator decoded
2026-10-10 16:52 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 UTCBandSH5RJX S/NCounterpartCounterpart S/NMsgsCapture
10-10 17:02 40m - / - UB3ZKO -16 / - 2 Partial capture
10-10 16:52 40m -17 / -11 F4NEW -7 / - 3 ✓ Closing observed
10-10 16:51 40m -16 / - SV3SIM - / -8 4 Partial capture
10-10 16:50 40m -16 / -1 DK0RMR +5 / - 3 ✓ Full exchange observed
10-10 05:52 40m -21 / - ON4AZM - / +6 2 ✓ Closing fragment
10-07 10:18 40m - / -5 DG8YFM -20 / - 2 ✓ Closing fragment
10-07 10:12 40m - / -13 HA8LD -1 / - 2 ✓ Closing fragment
10-06 10:35 40m - / -16 SP6AMI -16 / - 2 ✓ Closing fragment
10-06 10:34 40m - / -10 OE5KBO 0 / - 2 ✓ Closing fragment
10-05 13:17 40m -22 / -8 SP6BS -16 / +10 4 Partial capture
10-04 21:15 40m - / -9 F1PBZ -10 / - 2 Partial capture
10-03 20:35 40m -12 / - SP2KW - / - 2 Partial capture
10-03 20:33 40m -14 / - TA7MMI - / - 2 Partial capture
10-03 20:32 40m -14 / - UY5LW - / - 2 Partial capture
10-03 20:31 40m -10 / - SV5ADM - / - 2 Partial capture
10-03 20:28 40m - / -10 IQ0AAX -4 / - 2 ✓ Closing fragment
10-03 20:24 40m -11 / - OK1OPT - / +8 2 Partial capture
10-03 20:21 40m -10 / - OH9FTW +1 / - 2 ✓ Closing observed
10-03 20:19 40m -14 / - 3Z4DX -6 / - 3 ✓ Closing observed
10-03 20:07 40m - / -9 F4LHL 0 / - 3 ✓ Closing fragment
10-03 20:02 40m - / -10 DJ3JD -6 / - 2 ✓ Closing fragment
10-03 17:52 40m - / -9 SP8IPJ -12 / - 2 ✓ Closing fragment
10-03 07:01 40m - / -7 SP5NON +3 / - 3 ✓ Closing fragment
10-03 06:19 40m - / -9 ON8LX -17 / - 2 ✓ Closing fragment
10-03 06:16 40m - / - EA6Y +3 / - 2 Partial capture
10-02 21:21 40m - / -22 DC7LR -2 / - 3 ✓ Closing fragment
10-02 21:16 40m - / +2 DL3GA -3 / - 4 ✓ Closing fragment
10-01 11:05 40m - / -9 SQ4KBF -10 / - 2 ✓ Closing fragment
10-01 10:47 40m - / -12 SP4BB -14 / - 3 ✓ Closing fragment
09-30 11:57 40m - / -4 DL4KER -14 / - 2 ✓ Closing fragment
09-29 11:58 40m - / - DL0RDG -12 / - 2 Partial capture
09-29 11:56 40m - / -4 LZ3CB +2 / - 3 ✓ Closing fragment
09-29 11:52 40m - / -4 OM3TFP -12 / - 4 ✓ Closing fragment
09-29 11:07 40m - / - SP4VIT -10 / - 2 ✓ Closing fragment
09-28 17:03 40m - / -15 DL4RY -7 / - 3 Partial capture
09-28 17:00 40m -16 / -18 IK2YYO -4 / -1 5 ✓ Full exchange observed
09-28 16:59 40m -15 / - PD0BN - / +5 3 ✓ Closing fragment
09-28 16:50 40m -20 / -13 9A3TR -9 / +5 3 ✓ Full exchange observed
09-28 16:50 40m - / -14 UA3FO -8 / - 6 Partial capture
09-28 16:47 40m -19 / -9 F4GVO +14 / - 6 ✓ Closing observed
09-28 13:56 40m -22 / -14 YO7BGA -4 / -5 6 ✓ Full exchange observed
09-28 09:19 40m - / -6 OE3TBR -14 / - 3 Partial capture
09-28 08:55 40m - / -3 F1PBZ -15 / - 3 Partial capture
09-27 23:10 40m - / -13 EA1CLT -11 / - 2 ✓ Closing fragment
09-27 19:55 40m -13 / - HA9MDP - / +8 3 ✓ Closing fragment
09-27 19:22 40m -11 / 0 LZ1GC -12 / +9 5 ✓ Full exchange observed
09-27 19:20 40m -11 / -8 ON4MHZ -12 / -8 9 ✓ Full exchange observed
09-27 19:19 40m -14 / -6 IZ6FXP -4 / 0 4 ✓ Full exchange observed
09-27 19:17 40m -16 / - SP5MXY - / +4 2 ✓ Closing fragment
09-27 19:15 40m -18 / -6 LX1JH -6 / - 4 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
055315 -20 1376  ON4AZM SH5RJX RR73
055645 -23 1376  EA5PS SH5RJX RR73
165000  +3 2966  SH5RJX DK0RMR -01
165015 -16 1376  DK0RMR SH5RJX R+13
165030  +7 2966  SH5RJX DK0RMR RR73
165115 -14 1376  SV3SIM SH5RJX JO78 (x2)
165215 -19 1376  F4NEW SH5RJX JO78
165230  -7 1959  SH5RJX F4NEW -11
165315 -15 1376  F4NEW SH5RJX 73
165345 -18 1376  SV3SIM SH5RJX R-08 (x2)
170245 -14 1677  SH5RJX UB3ZKO KO80 (x3)
10m 
UTC    dB Audio  Message
120345  +6  489  SH5RJX IK4LZH JN54
120345  +1 1729  SH5RJX DL1AN 73
120415 +12  489  SH5RJX IK4LZH JN54 (x5)
120845 -13 1793  SH5RJX HB9CIC JN47 (x3)
121600 -11 2016  SH5RJX DJ1OJ +11 (x2)
184445 -10  489  SH5RJX IK4LZH JN54
113145 -19 2010  SH5RJX CR7CDR -10 (x2)
20m 
UTC    dB Audio  Message
073945  -2 1718  SH5RJX UT0EP RR73
074015  -7 1748  SH5RJX F4HSB JN37 (x3)
141345 -11  423  SH5RJX PA4ST -11
213430  -7  575  SH5RJX TJ1GD -14 (x2)
094430 -19 1713  MW9VVX SH5RJX 73
094500 -15 1713  HB9RYB SH5RJX JO78
094515  -2  964  SH5RJX HB9RYB +01 (x2)
100100  +4  860  SH5RJX M9YLR IO83
101430 -14 1587  SH5RJX HB0HF -04 (x2)
120130 -13 2635  SH5RJX CR7CBH +05

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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