HB9CPT — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Switzerland Most frequent locator attributed to this token: JN47

Receiver-side FT8 activity involving HB9CPT, decoded by SO8OO in southeastern Poland. 143 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 17 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-08-27.

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 143 FT8 messages attributed to HB9CPT as the transmitting token by decoded message structure across 17 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (56%), followed by 40 m (43%) and 10 m (1%). The busiest six-hour window was 14:00-20:00 UTC, containing 49% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

143
Messages attributed
17
UTC dates decoded
32
Active 15-min windows
-8 dB
Estimated median S/N

Bands

40m · 61 20m · 80 10m · 2
First attributed message: 2026-06-12
Last attributed message: 2026-08-27 09:02 UTC

Observed FT8 message patterns

Attributed sample
143 messages
Active dates
17 UTC dates
Estimated median S/N
-8 dB
Estimated 10th-90th percentile
-19 to +3 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 32, moderate (-15 to -9 dB) 30, strong (≥ -8 dB) 81.

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 HB9CPT 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 HB9CPT

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
JN47 · 87 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
975 km (approx.)
Last such locator decoded
2026-08-27 09:01 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 UTCBandHB9CPT S/NCounterpartCounterpart S/NMsgsCapture
08-27 09:00 20m -13 / - VK6BAD - / -26 3 Partial capture
08-27 08:57 20m -5 / - W1AW/2 - / - 5 Partial capture
08-17 08:27 20m +4 / - V31MA - / -21 4 ✓ Closing fragment
08-16 20:39 20m -5 / - CO8LY - / -15 2 ✓ Closing fragment
08-16 20:24 20m -7 / - VE9JMC - / -12 3 ✓ Closing fragment
08-12 07:42 20m -6 / - VK6BAD - / -26 6 ✓ Closing fragment
08-11 19:38 40m -7 / - D2UY - / - 7 Partial capture
08-11 19:26 40m -12 / - YC2BUZ - / -17 4 ✓ Closing fragment
08-11 19:12 40m -4 / - F6FHZ - / +1 2 ✓ Closing fragment
08-11 19:08 40m -1 / - JH2FXK - / -10 3 ✓ Closing fragment
08-11 19:03 40m 0 / - TN8GD - / - 5 Partial capture
08-11 18:50 40m -12 / - JA4FKX - / -5 2 Partial capture
08-11 18:47 40m -8 / - SV1DKR - / 0 2 ✓ Closing fragment
08-11 18:41 40m -15 / - SV1TRJ - / -7 10 ✓ Closing fragment
08-09 15:37 20m - / - F5PBG -10 / - 4 Partial capture
08-09 15:32 20m +4 / - A41KB - / -5 7 ✓ Closing fragment
08-07 21:05 20m -20 / - CN8NY - / - 2 Partial capture
08-07 21:02 20m -6 / -4 HS0ZOY -11 / 0 5 ✓ Full exchange observed
08-07 21:01 20m -17 / - HI8UD - / - 2 Partial capture
07-24 12:08 20m -17 / - W4DXM - / - 2 Partial capture
07-16 10:03 20m -7 / - ON1JP - / -15 2 ✓ Closing fragment
07-16 10:01 20m - / - DL3MIB -9 / - 7 Partial capture
07-16 10:01 20m -6 / +8 RC5F -20 / +5 5 ✓ Full exchange observed
07-15 08:36 20m -14 / - TF5B - / 0 2 ✓ Closing fragment
07-05 11:57 10m -2 / - 7Q5MP - / - 2 Partial capture
06-28 08:08 10m - / -16 F4FSY -20 / - 2 Partial capture
06-25 08:43 20m -24 / +4 CU3HN -18 / - 2 ✓ Closing observed
06-23 18:50 40m - / - SP9D -6 / - 3 Partial capture
06-23 18:48 40m -15 / +5 SP1BMK -16 / +10 5 ✓ Full exchange observed
06-23 18:45 40m -4 / - ON3DOC - / - 5 Partial capture
06-23 18:42 40m -20 / - OZ1CTU/P - / - 4 Partial capture
06-23 18:40 40m -16 / -14 EU4BE -23 / +1 3 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
203700 -11 2576  HB9CPT LU1FIV RR73
203915  -6  865  CO8LY HB9CPT R-15 (x2)
082730  +7  578  V31MA HB9CPT JN47 (x4)
085745  -1 2474  W1AW/2 HB9CPT JN47 (x5)
090045 -11 2175  VK6BAD HB9CPT JN47 (x3)
40m 
UTC    dB Audio  Message
190915  -3 2444  JH2FXK HB9CPT R-10 (x2)
191215  -1 2443  F6FHZ HB9CPT +01 (x2)
192600 -10 1240  YC2BUZ HB9CPT JN47 (x4)
193815  -6 2359  D2UY HB9CPT JN47 (x7)
10m 
UTC    dB Audio  Message
080800 -21 1704  HB9CPT F4FSY -16 (x2)
115745  -4 1941  7Q5MP HB9CPT JN47 (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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