K9VB — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: FN13

Receiver-side FT8 activity involving K9VB, decoded by SO8OO in southeastern Poland. 152 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 15 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-08-28.

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 152 FT8 messages attributed to K9VB as the transmitting token by decoded message structure across 15 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (93%), followed by 40 m (5%) and 80 m (1%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -17 dB.

Overview

152
Messages attributed
15
UTC dates decoded
27
Active 15-min windows
-17 dB
Estimated median S/N

Bands

80m · 2 40m · 8 20m · 142
First attributed message: 2026-06-08
Last attributed message: 2026-08-28 00:57 UTC

Observed FT8 message patterns

Attributed sample
152 messages
Active dates
15 UTC dates
Estimated median S/N
-17 dB
Estimated 10th-90th percentile
-24 to -9 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 87, moderate (-15 to -9 dB) 53, strong (≥ -8 dB) 12.

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 K9VB 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 K9VB

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
FN13 · 95 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
6,995 km (approx.)
Last such locator decoded
2026-08-28 00:57 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 UTCBandK9VB S/NCounterpartCounterpart S/NMsgsCapture
08-28 00:55 40m -16 / - IZ1GLT - / - 5 Partial capture
08-27 03:43 80m - / -18 SP7XIF +8 / - 3 Partial capture
08-27 03:42 80m - / -9 ON8DM 0 / - 2 ✓ Closing fragment
08-27 03:33 40m - / -12 IK3SSW -6 / - 3 Partial capture
08-27 02:04 20m -16 / -12 IW2ENA -12 / - 5 ✓ Closing observed
08-26 02:55 20m - / - HZ1ES -7 / - 3 ✓ Closing fragment
08-24 01:31 40m -19 / - EB1LA - / - 2 Partial capture
08-22 01:09 40m - / - UR1CCT +3 / - 2 Partial capture
08-22 01:08 40m - / -14 RA2FCF -18 / - 4 Partial capture
08-21 23:05 20m - / -14 IW2MYH -12 / - 3 ✓ Closing fragment
08-21 01:23 20m - / - Z34K -12 / - 3 Partial capture
08-21 01:22 20m - / -6 IS0KNG -21 / - 3 ✓ Closing fragment
08-21 00:57 20m - / -16 Z34K -5 / - 2 Partial capture
08-17 02:13 80m - / -15 DL1RWN +16 / - 3 ✓ Closing fragment
08-17 02:12 80m - / -14 OH1MLZ +10 / - 2 ✓ Closing fragment
08-16 03:02 80m - / -17 HB9ALO -4 / - 2 ✓ Closing fragment
08-16 01:45 80m - / - DO1NAE -6 / - 11 Partial capture
08-12 00:46 20m - / -9 9A4ZM -6 / - 6 ✓ Closing fragment
08-02 02:44 20m -18 / - IS0OZK - / - 2 Partial capture
07-29 15:03 10m - / -16 F8NHF -20 / - 3 Partial capture
07-20 02:19 20m -15 / - TA2EC -17 / -18 2 Partial capture
07-20 02:15 20m -20 / -6 OE5CCN -8 / 0 4 ✓ Full exchange observed
07-20 01:50 40m - / -18 F5RRS -20 / - 3 ✓ Closing fragment
07-08 00:55 40m - / -9 EA3ZD -11 / - 2 ✓ Closing fragment
06-28 02:27 20m - / -6 4L1MA -8 / - 4 Partial capture
06-26 01:27 20m - / - EA9PB -22 / - 2 ✓ Closing fragment
06-25 23:11 20m - / -7 EA5DE -18 / - 2 ✓ Closing fragment
06-25 22:52 20m - / -15 SV5BYP -18 / - 6 ✓ Closing fragment
06-25 02:55 40m - / -10 EC3A -14 / - 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
010915  +2 1453  K9VB UR1CCT KN69 (x2)
011015 -21 1864  K9VB RA2FCF -17 (x2)
013115 -19 1546  EB1LA K9VB FN13 (x2)
033330  -6 1915  K9VB IK3SSW -12
033400 -15 1379  NL8F K9VB FN13
033400  -8 1915  K9VB IK3SSW -12 (x2)
005530 -16 2157  IZ1GLT K9VB FN13 (x5)
80m 
UTC    dB Audio  Message
014945 -14 1650  K9VB DO1NAE JN59 (x3)
030230  -3  831  K9VB HB9ALO -17 (x2)
021230 +10 1031  K9VB OH1MLZ -14 (x2)
021330 +18 2530  K9VB DL1RWN -15 (x3)
034200  +3 2397  K9VB ON8DM -09 (x2)
034330 +11 1483  K9VB SP7XIF -18 (x3)
20m 
UTC    dB Audio  Message
012330 -18 1807  K9VB Z34K KN01 (x3)
220830  -2 1694  K9VB IZ3GOO RR73
230530 -12 1447  K9VB IW2MYH -14 (x3)
025530  -9  932  K9VB HZ1ES LL34 (x3)
020445 -17 2056  IW2ENA K9VB FN13
020500  -9 2062  K9VB IW2ENA -12 (x3)
020615 -15 2054  IW2ENA K9VB 73
10m 
UTC    dB Audio  Message
150315 -21 1477  K9VB F8NHF JO10 (x3)

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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