SM3VOX — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Sweden Most frequent locator attributed to this token: JP80

Receiver-side FT8 activity involving SM3VOX, decoded by SO8OO in southeastern Poland. 117 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 14 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-09-12.

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 117 FT8 messages attributed to SM3VOX as the transmitting token by decoded message structure across 14 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (55%), followed by 20 m (45%). Most decodes (81%) 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 -8 dB.

Overview

117
Messages attributed
14
UTC dates decoded
31
Active 15-min windows
-8 dB
Estimated median S/N

Bands

40m · 64 20m · 53
First attributed message: 2026-06-08
Last attributed message: 2026-09-12 23:22 UTC

Observed FT8 message patterns

Attributed sample
117 messages
Active dates
14 UTC dates
Estimated median S/N
-8 dB
Estimated 10th-90th percentile
-16 to +1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 13, moderate (-15 to -9 dB) 41, strong (≥ -8 dB) 63.

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 SM3VOX 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 SM3VOX

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
JP80 · 77 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,212 km (approx.)
Last such locator decoded
2026-09-12 23:21 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 UTCBandSM3VOX S/NCounterpartCounterpart S/NMsgsCapture
09-12 23:20 40m -12 / - KC1OXG -10 / -16 7 ✓ Closing observed
09-12 23:15 40m +2 / - KB1PA - / - 2 Partial capture
09-12 23:09 40m -2 / - VE9ML - / - 3 Partial capture
09-12 22:49 40m -1 / - N4NF - / - 3 Partial capture
09-12 22:45 40m +3 / - W6/UT5UF - / +7 2 Partial capture
09-12 22:39 40m -4 / - N4NF - / - 4 Partial capture
09-12 22:33 40m -6 / - W1FEA - / - 2 Partial capture
09-12 22:29 40m -7 / - WO1X - / - 5 Partial capture
09-12 22:14 40m -5 / - HK3X - / - 3 Partial capture
09-12 22:11 40m -5 / -13 K2ZJ -10 / -11 5 ✓ Full exchange observed
09-12 22:05 40m -3 / - WK1O - / -3 2 ✓ Closing fragment
09-12 22:03 40m -5 / - VJ6X - / - 2 Partial capture
09-12 19:32 40m -3 / - CN8NS - / - 3 Partial capture
09-11 23:13 40m - / - RA4FUT -22 / - 2 Partial capture
09-11 21:33 40m -7 / -12 R2DP -20 / -7 5 ✓ Full exchange observed
09-11 21:31 40m -12 / -3 T77RN -6 / -9 4 ✓ Full exchange observed
09-11 21:25 40m -7 / - D44TWO - / -14 2 ✓ Closing fragment
09-11 21:16 40m -1 / - V51WH - / - 2 Partial capture
09-11 21:12 40m -6 / - JA5XAE -8 / -7 4 ✓ Closing observed
09-11 21:10 40m -6 / - VK6BAD - / - 2 ✓ Closing fragment
08-30 13:05 20m - / -10 JA2ICB -9 / - 2 ✓ Closing fragment
08-28 09:20 20m +12 / - KH6DC - / - 2 ✓ Closing fragment
08-26 14:15 20m +4 / - OY1HJ - / - 5 Partial capture
08-25 22:48 20m - / -14 K4TEI -13 / - 3 ✓ Closing fragment
08-25 22:41 20m - / -3 K1SM -6 / - 3 ✓ Closing fragment
08-24 10:01 20m -14 / - CU8AF - / - 3 Partial capture
08-10 19:52 20m -22 / -8 9K2GR -16 / - 4 ✓ Closing observed
07-25 23:51 40m -18 / - D2UY - / -17 5 Partial capture
07-19 10:58 20m - / +10 TK5K +11 / - 2 ✓ Closing fragment
07-18 18:37 20m -18 / - DS2MGT - / - 3 Partial capture
06-23 18:41 20m - / - M5MOW -10 / - 2 Partial capture
06-23 18:38 20m - / 0 F5IXN -9 / - 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
225000  +2 2295  N4NF SM3VOX JP80
225030  -3 2295  WT2J SM3VOX JP80
225700  -4 2295  WA2TMC SM3VOX JP80
230930  -3 2295  VE9ML SM3VOX JP80 (x3)
231500  +1 2295  KB1PA SM3VOX JP80 (x2)
232000  -8 2295  KC1OXG SM3VOX JP80 (x5)
232215 -10  954  SM3VOX KC1OXG RR73
232230 -13 2295  KC1OXG SM3VOX 73
20m 
UTC    dB Audio  Message
224200  -5 2362  SM3VOX K1SM RR73
224845 -12 2421  SM3VOX K4TEI EM90 (x3)
225715 -20 1546  SM3VOX KM4FZA RRR
141515  +1 1469  OY1HJ SM3VOX JP80 (x5)
092015  +9 1275  KH6DC SM3VOX JP80 (x2)
130500  -9 2772  SM3VOX JA2ICB -10 (x2)
181230 -17 1972  SM3VOX M8XDZ 73

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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