IS0AAS — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: Sardinia Most frequent locator attributed to this token: JM49

Receiver-side FT8 activity involving IS0AAS, decoded by SO8OO in southeastern Poland. 376 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 26 UTC dates in the available aggregate history. Observed between 2026-06-25 and 2026-10-10.

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 376 FT8 messages attributed to IS0AAS as the transmitting token by decoded message structure across 26 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (70%), followed by 20 m (28%) and 10 m (2%). The busiest six-hour window was 21:00-03:00 UTC, containing 46% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.

Overview

376
Messages attributed
26
UTC dates decoded
64
Active 15-min windows
-13 dB
Estimated median S/N

Bands

40m · 263 20m · 106 10m · 7
First attributed message: 2026-06-25
Last attributed message: 2026-10-10 06:51 UTC

Observed FT8 message patterns

Attributed sample
376 messages
Active dates
26 UTC dates
Estimated median S/N
-13 dB
Estimated 10th-90th percentile
-20 to -7 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 119, moderate (-15 to -9 dB) 185, strong (≥ -8 dB) 72.

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 IS0AAS 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 IS0AAS

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
JM49 · 178 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,535 km (approx.)
Last such locator decoded
2026-10-10 06:51 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 UTCBandIS0AAS S/NCounterpartCounterpart S/NMsgsCapture
10-10 06:51 40m - / - SP7LPD -1 / - 11 Partial capture
10-05 21:41 40m -13 / - UN0GY - / - 3 Partial capture
10-05 21:36 40m -13 / - TA2VUZ - / -10 5 Partial capture
10-05 21:30 40m -16 / -18 EX7CQ -11 / -2 8 ✓ Full exchange observed
10-05 21:26 40m -16 / - DG5LP -7 / +6 2 Partial capture
10-05 21:09 40m - / - F4BYA +11 / - 4 Partial capture
10-01 22:12 40m -9 / - DL9AN - / -10 4 ✓ Closing fragment
10-01 22:11 40m - / - F4BYA +12 / - 3 Partial capture
10-01 22:09 40m -12 / - SP7TF - / -2 2 ✓ Closing fragment
10-01 22:07 40m -9 / - BI6PKB - / - 2 Partial capture
09-28 17:42 40m -13 / - A65DF - / - 3 Partial capture
09-28 17:39 40m - / -20 UB1CCL -7 / - 3 ✓ Closing fragment
09-22 14:23 40m - / +5 IK2TCV -16 / - 4 Partial capture
09-22 14:19 40m - / - DK4RH -21 / - 4 Partial capture
09-22 14:15 40m - / -13 F1PBZ -10 / - 4 Partial capture
09-22 14:13 40m - / -15 IT9DVZ -11 / - 3 ✓ Closing fragment
09-21 18:26 40m -8 / - F4NEW - / -2 10 Partial capture
09-21 18:25 40m -8 / - IK4RVY - / - 2 Partial capture
09-21 18:19 40m - / -9 HB9ELE +9 / - 7 ✓ Closing fragment
09-21 18:19 40m -8 / -14 OE9NET -6 / - 3 Partial capture
09-21 18:11 40m -7 / -4 S53AK 0 / +5 3 ✓ Full exchange observed
09-21 18:07 40m - / - HA7EG -1 / - 3 Partial capture
09-21 18:03 40m -12 / - LY1DY - / -8 2 Partial capture
09-21 17:59 40m - / -8 OE6TNO +1 / - 3 ✓ Closing fragment
09-21 17:53 40m - / - IT9DVZ -2 / - 3 Partial capture
09-21 17:50 40m - / -11 DL3JHK -4 / - 4 Partial capture
09-21 17:35 40m - / -19 9A1CCB +8 / - 4 ✓ Closing fragment
09-21 17:34 40m - / -7 F4FSY -14 / - 2 ✓ Closing fragment
09-21 17:26 40m - / -14 IZ0MIT -12 / - 3 ✓ Closing fragment
09-21 15:15 40m - / - HB9ELE +6 / - 3 Partial capture
09-21 15:05 40m - / -13 IN3ADG 0 / - 5 ✓ Closing fragment
09-21 14:59 40m - / -1 9A4LT -13 / - 4 ✓ Closing fragment
09-21 06:55 40m - / - LY1DY -3 / - 4 Partial capture
09-21 06:53 40m - / -12 SA7BYQ -10 / - 2 ✓ Closing fragment
09-21 06:49 40m -20 / - F1DSZ -4 / -1 3 ✓ Closing observed
09-21 06:46 40m - / - DL2EMS -16 / - 4 ✓ Closing fragment
09-21 06:46 40m - / -2 DL8WEM +2 / - 3 ✓ Closing fragment
09-19 15:55 40m -7 / - RN6LBT - / - 4 Partial capture
09-19 15:48 40m -6 / - R6FX -1 / -4 3 Partial capture
09-19 14:28 40m - / -5 HA1BL +4 / - 2 ✓ Closing fragment
09-19 08:22 40m - / -13 9A6T -8 / - 3 ✓ Closing fragment
09-19 08:11 40m - / -8 DH1NGL -16 / - 2 ✓ Closing fragment
09-19 07:22 40m - / -8 IZ8DBJ -12 / - 3 ✓ Closing fragment
09-19 07:21 40m - / +5 IN3IZQ -8 / - 2 ✓ Closing fragment
09-19 07:19 40m - / -3 IK5GUQ -18 / - 2 ✓ Closing fragment
09-19 07:00 40m - / - YO3GNF -8 / - 2 Partial capture
09-18 07:18 40m - / -4 M0BEW -14 / - 2 ✓ Closing fragment
09-18 07:18 40m - / - OZ3AAF +3 / - 3 Partial capture
09-18 07:16 40m - / -14 DA1ST -8 / - 2 ✓ Closing fragment
09-18 05:44 40m - / +1 IK4CBO -8 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
214215  -9 1683  UN0GY IS0AAS JM49
214315 -15 1683  BG0KD IS0AAS JM49
065115 -20 1681  CQ IS0AAS JM49
065130  +5 2305  IS0AAS SP7LPD JO91 (x2)
065230 -11 1060  IS0AAS SQ6WA JO81
065230  -2 2305  IS0AAS SP7LPD JO91 (x9)
20m 
UTC    dB Audio  Message
124800 -10 2226  PA7YY IS0AAS 73
125130 -11 1515  IS0AAS CT7AUT +03
125145  -8 2226  CT7AUT IS0AAS R+13
125200 -10 1515  IS0AAS CT7AUT RR73
125630 -12 2224  IS0AAS PA3DKZ JO22
125530  -8 3004  IS0AAS OZ1SMB JO54
125630 -15 2220  IS0AAS SM7JKW 73
125800 +10 2910  IS0AAS F4BYA JN19
125800  -3 2259  IS0AAS DL4RDJ -01
125830 +10 2910  IS0AAS F4BYA JN19
125830 -10 2258  IS0AAS DL4RDJ RR73
125900 +12 2910  IS0AAS F4BYA JN19 (x2)
130200  -5 1615  IS0AAS F4FHM/QRP -17 (x2)
10m 
UTC    dB Audio  Message
151215  +6 2710  IS0AAS DF6QN JO41 (x2)
151815 -18 2024  IS0AAS DG9ZL JO40
111745  -5 1321  IS0AAS DF4WC JN49 (x3)
072745 -19 1602  IS0AAS RW6HP LN14
073015 -18 1422  IS0AAS DL4DTL JN49 (x2)
073045  -7 2228  IS0AAS DK8ZZ JO30
073115 -15 1424  IS0AAS DL4DTL JN49
073115 -11 2228  IS0AAS DK8ZZ R-06
073145 -17 1425  IS0AAS DL4DTL JN49
073145  -7 2228  IS0AAS DK8ZZ 73
073215 -24 1422  IS0AAS DN9DGB JO52

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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee