HB9RBV — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving HB9RBV, decoded by SO8OO in southeastern Poland. 73 FT8 messages attributed to this token as transmitter, on 80m, 40m, 10m, across 16 UTC dates in the available aggregate history. Observed between 2026-06-16 and 2026-09-18.

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 73 FT8 messages attributed to HB9RBV as the transmitting token by decoded message structure across 16 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (74%), followed by 10 m (21%) and 80 m (5%). Most decodes (95%) fell within the six-hour window 15:00-21:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.

Overview

73
Messages attributed
16
UTC dates decoded
29
Active 15-min windows
-13 dB
Estimated median S/N

Bands

80m · 4 40m · 54 10m · 15
First attributed message: 2026-06-16
Last attributed message: 2026-09-18 19:56 UTC

Observed FT8 message patterns

Attributed sample
73 messages
Active dates
16 UTC dates
Estimated median S/N
-13 dB
Estimated 10th-90th percentile
-19 to -7 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 25, moderate (-15 to -9 dB) 37, strong (≥ -8 dB) 11.

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 HB9RBV 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 HB9RBV

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 · 42 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
975 km (approx.)
Last such locator decoded
2026-09-18 19:56 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 UTCBandHB9RBV S/NCounterpartCounterpart S/NMsgsCapture
09-18 19:36 40m -6 / - SQ3LMR - / -16 4 ✓ Closing fragment
09-18 19:27 40m - / +4 DL1NB +3 / - 3 Partial capture
09-18 19:22 40m -16 / - F3CJ - / - 2 Partial capture
09-06 19:29 40m -11 / - OV6ZM - / - 2 Partial capture
09-05 19:26 40m - / -12 LY2MM +8 / - 2 ✓ Closing fragment
09-05 19:19 40m - / -7 ON6SAT -2 / - 2 ✓ Closing fragment
09-05 19:11 40m -15 / -10 OH2MA 0 / - 3 ✓ Closing observed
09-05 19:09 40m -17 / -2 PC7W -10 / -11 3 ✓ Full exchange observed
08-31 19:55 40m -20 / -12 PG4T +8 / - 3 ✓ Closing observed
08-31 19:51 40m - / -12 DL5RCN +4 / - 2 ✓ Closing fragment
08-29 19:59 40m - / -10 G1SID +6 / - 2 ✓ Closing fragment
08-29 19:55 40m -15 / 0 M0VCP -8 / -18 4 ✓ Full exchange observed
08-29 19:48 40m -13 / -15 OH1LEG -6 / -15 6 ✓ Full exchange observed
08-29 19:39 40m -19 / -18 PD2XX -10 / -15 4 ✓ Full exchange observed
08-28 18:03 40m - / -10 HB9TOC +11 / - 2 Partial capture
08-27 20:06 40m -10 / -2 SP9NR +26 / - 4 ✓ Full exchange observed
08-27 19:58 40m -11 / - S57TW +9 / -13 6 ✓ Closing observed
08-26 19:53 40m -17 / +4 IK0CHU +1 / - 5 ✓ Closing observed
08-25 19:53 40m - / -14 OE7LVI -3 / - 3 ✓ Closing fragment
08-25 19:52 40m - / +5 PD0IFI -1 / - 3 ✓ Closing fragment
08-25 19:31 40m -13 / -6 IU1TLG -3 / -12 4 ✓ Full exchange observed
08-25 19:18 40m -18 / -3 ON4CJU 0 / -4 6 ✓ Full exchange observed
08-25 19:13 40m - / - R6FX 0 / - 2 Partial capture
08-25 19:11 40m - / - OM3PR 0 / - 2 Partial capture
08-21 20:09 40m -11 / +5 GM0DEQ +4 / - 3 Partial capture
08-21 20:06 40m -12 / - DL6RU - / - 3 Partial capture
08-21 20:02 40m -20 / +1 DM2BR -2 / - 3 ✓ Closing observed
08-21 20:01 40m - / 0 PD0MNO -16 / - 2 ✓ Closing fragment
08-21 19:56 40m -15 / - PD1GOL -14 / -19 3 ✓ Closing observed
08-21 19:53 40m -14 / - SA3LEN -24 / - 2 ✓ Closing observed
08-18 20:22 40m - / -12 ON5UN -12 / - 2 ✓ Closing fragment
08-12 20:11 10m - / - PD1WMD -15 / - 3 ✓ Closing fragment
08-12 20:04 10m -16 / - SP3TD - / -10 2 ✓ Closing fragment
08-12 19:59 10m 0 / - RN4AQ - / - 2 ✓ Closing fragment
07-05 20:42 80m -13 / -1 OP0WWA -13 / - 2 Partial capture
07-05 20:40 80m -9 / - II5WWA -13 / - 2 Partial capture
07-05 20:23 40m - / -12 DA0WWA -4 / - 2 Partial capture
07-03 20:48 80m - / -8 II2WWA -10 / - 2 ✓ Closing fragment
07-03 20:45 80m - / +6 DA0WWA +1 / - 2 ✓ Closing fragment
07-03 20:43 80m -22 / -9 SN4WWA +10 / -15 3 Partial capture
07-03 20:34 40m - / -8 GB2WWA -8 / - 2 ✓ Closing fragment
06-30 19:03 20m - / -9 CR2WWA -16 / - 2 Partial capture
06-30 18:01 40m - / -8 II3WWA -16 / - 2 Partial capture
06-30 17:56 40m - / -4 II3WWA -15 / - 3 Partial capture
06-30 17:54 40m - / 0 TM2WWA -18 / - 2 ✓ Closing fragment
06-30 14:26 10m -9 / - CR2WWA - / - 4 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
192630  +7 1939  HB9RBV LY2MM -12 (x2)
192945  -9 2173  OV6ZM HB9RBV JN47 (x2)
204100  -7 2269  LB7ZG HB9RBV JN47
192215 -14 2146  F3CJ HB9RBV JN47 (x2)
192715  +3 1723  HB9RBV DL1NB +11 (x3)
193615  -7 2147  SQ3LMR HB9RBV JN47 (x4)
195645 -13 2147  UB3ADO/P HB9RBV JN47
10m 
UTC    dB Audio  Message
150445  -8  650  II0WWA HB9RBV 73
150745 -20 1934  DK8HC HB9RBV RR73
114945 -24 1692  HB9RBV II9WWA -15
195915  +0 2750  RN4AQ HB9RBV JN47 (x2)
200245 -17 2083  CQ HB9RBV JN47 (x2)
200445 -17 2083  SP3TD HB9RBV -10 (x2)
200615 -19 2083  SP6ASD HB9RBV RR73
201015 -18 2082  CQ HB9RBV JN47
201100 -18 2082  HB9RBV PD1WMD JO21 (x3)
201315 -21 2082  SP9JP HB9RBV RR73
80m 
UTC    dB Audio  Message
204345 -20 1558  SN4WWA HB9RBV JN47
204400 +10 1558  HB9RBV SN4WWA -09
204415 -24 1558  SN4WWA HB9RBV R-15
204430  +9 1558  HB9RBV RR73; IT9ECY <...> -06
204530  +3 1219  HB9RBV DA0WWA +06 (x2)
204800 -12 1644  HB9RBV II2WWA -08 (x2)
204045  -9  318  II5WWA HB9RBV JN47
204100 -13  318  HB9RBV II5WWA +18
204215 -13 1802  OP0WWA HB9RBV JN47
204230 -13 1801  HB9RBV OP0WWA -01
204300 -16 1801  HB9RBV RR73; DL1UDO <...> +10
20m 
UTC    dB Audio  Message
190330 -17 1880  HB9RBV CR2WWA -09 (x2)
150530  -1  854  HB9RBV OP0WWA RR73
150800 -19 1962  HB9RBV TM2WWA RR73
201200  -7 1819  HB9RBV RR73; YB2FAJ <...> -12

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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