N9MAX — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EM88

Receiver-side FT8 activity involving N9MAX, decoded by SO8OO in southeastern Poland. 38 FT8 messages attributed to this token as transmitter, on 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-08-25.

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 38 FT8 messages attributed to N9MAX as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Most decodes (87%) fell within the six-hour window 19:00-01:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

38
Messages attributed
6
UTC dates decoded
11
Active 15-min windows
-8 dB
Estimated median S/N

Bands

20m · 38
First attributed message: 2026-06-11
Last attributed message: 2026-08-25 17:59 UTC

Observed FT8 message patterns

Attributed sample
38 messages
Active dates
6 UTC dates
Estimated median S/N
-8 dB
Estimated 10th-90th percentile
-18 to -1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 8, moderate (-15 to -9 dB) 10, strong (≥ -8 dB) 20.

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 N9MAX 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 N9MAX

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
EM88 · 15 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
7,744 km (approx.)
Last such locator decoded
2026-08-25 17:58 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 UTCBandN9MAX S/NCounterpartCounterpart S/NMsgsCapture
09-18 23:44 40m - / - F5PBG -9 / - 3 Partial capture
09-18 23:42 40m - / -18 DL3MIB -10 / - 4 ✓ Closing fragment
09-18 23:39 40m - / - F4HXJ 0 / - 2 Partial capture
08-25 17:58 20m -14 / - OH6IH - / -19 3 Partial capture
08-25 17:48 20m -9 / -18 7X2KF +2 / - 2 ✓ Closing observed
08-24 21:54 20m -2 / - MD0RTZ - / -6 2 ✓ Closing fragment
08-24 21:25 20m - / - M8KUG -8 / - 2 Partial capture
08-23 20:09 20m - / - ER1NM -10 / - 4 Partial capture
08-23 01:20 40m - / -7 DK7ZT -7 / - 2 Partial capture
08-23 01:19 40m - / -18 R2SL +4 / - 2 ✓ Closing fragment
08-23 01:11 40m - / -13 HB9HSJ -1 / - 2 ✓ Closing fragment
08-21 22:18 20m -5 / - YL3KZ - / - 2 Partial capture
08-21 22:14 20m -1 / - A92AE - / -11 4 Partial capture
08-21 22:12 20m -4 / - UW8SM - / -15 2 ✓ Closing fragment
08-21 22:10 20m -4 / - A92AE - / -9 2 Partial capture
08-21 22:09 20m - / 0 A71UN -12 / - 2 ✓ Closing fragment
08-21 22:07 20m - / -15 SV5BYP -19 / - 3 ✓ Closing fragment
08-20 19:34 20m - / -5 MW3FLI -3 / - 2 ✓ Closing fragment
08-18 23:46 40m - / -1 F5MSE -16 / - 2 Partial capture
08-09 21:41 20m - / -20 IK2LRF -20 / - 3 Partial capture
08-09 21:38 20m - / -18 RA3ZH -8 / - 3 Partial capture
08-09 21:35 20m - / - EB3JT -5 / - 6 Partial capture
07-26 00:32 20m -18 / - EW2ZC - / -17 3 Partial capture
07-26 00:27 20m -24 / - EX8ABR - / -22 2 Partial capture
07-26 00:13 20m -4 / - OM0RX - / -9 3 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
011915  +4 2738  N9MAX R2SL -18 (x2)
012015  -7 1906  N9MAX DK7ZT -07 (x2)
231915 -14 2050  N9MAX TF3VS HP94
233300  +0 2170  N9MAX F5PBG IN78
233915  +2 2996  N9MAX F4HXJ IN87 (x2)
234230 -10  831  N9MAX DL3MIB JN57 (x3)
234400  -4 1287  N9MAX F5PBG IN78
234400 -10  831  N9MAX DL3MIB 73
234430 -11 1286  N9MAX F5PBG IN78 (x2)
20m 
UTC    dB Audio  Message
212100  -9 1880  MD0RTZ N9MAX EM88
212200 -12 1880  SP7JBG N9MAX -11
212545  -5 2837  N9MAX M8KUG IO81 (x2)
215400  -5 2596  MD0RTZ N9MAX R-06 (x2)
222100  -6 1109  M0OVG N9MAX 73
222315 +13 1109  N9MAX DL3MIB JN57
222330  -8 1109  W0OVX N9MAX -06
174800  +2  698  N9MAX 7X2KF -18
174845  -9  687  7X2KF N9MAX 73
175330 -19 3069  OH6IH N9MAX EM88 (x4)

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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