IU5JAE — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Italy Most frequent locator attributed to this token: JN53

Receiver-side FT8 activity involving IU5JAE, decoded by SO8OO in southeastern Poland. 41 FT8 messages attributed to this token as transmitter, on 60m, 40m, across 11 UTC dates in the available aggregate history. Observed between 2026-09-05 and 2026-09-20.

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 41 FT8 messages attributed to IU5JAE as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (85%), followed by 60 m (15%). Several six-hour UTC windows tied for the largest share (98%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -16 dB.

Overview

41
Messages attributed
11
UTC dates decoded
18
Active 15-min windows
-16 dB
Estimated median S/N

Bands

60m · 6 40m · 35
First attributed message: 2026-09-05
Last attributed message: 2026-09-20 20:36 UTC

Observed FT8 message patterns

Attributed sample
41 messages
Active dates
11 UTC dates
Estimated median S/N
-16 dB
Estimated 10th-90th percentile
-24 to -11 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 21, moderate (-15 to -9 dB) 20, strong (≥ -8 dB) 0.

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 IU5JAE 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 IU5JAE

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
JN53 · 26 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,089 km (approx.)
Last such locator decoded
2026-09-20 20:36 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 UTCBandIU5JAE S/NCounterpartCounterpart S/NMsgsCapture
09-21 21:43 40m - / -18 PI4TX -2 / - 5 Partial capture
09-21 21:41 40m - / +3 DK7ZT -6 / - 4 ✓ Closing fragment
09-21 12:06 40m - / -9 F4DIA -14 / - 2 ✓ Closing fragment
09-20 20:42 40m - / -12 UB7K +13 / - 3 ✓ Closing fragment
09-20 20:39 40m - / -8 F6HRP +6 / - 2 ✓ Closing fragment
09-20 20:33 40m - / -19 PD2TX -4 / - 2 ✓ Closing fragment
09-19 20:22 60m - / -18 PA4CC +8 / - 2 ✓ Closing fragment
09-19 13:02 40m - / - IU4PPL -17 / - 2 Partial capture
09-18 22:13 80m - / -20 IK2ZJP -16 / - 2 ✓ Closing fragment
09-18 20:25 40m - / -11 DK7ZT -2 / - 3 Partial capture
09-18 20:25 40m - / -14 DL1UDO -4 / - 4 ✓ Closing fragment
09-17 21:49 40m -13 / - EA9AR - / - 5 Partial capture
09-17 20:40 60m - / - 9A4ZM +4 / - 2 Partial capture
09-16 20:30 60m - / -22 DL5DQZ -6 / - 3 ✓ Closing fragment
09-16 20:21 40m -12 / -9 DK7UY +11 / -4 4 ✓ Full exchange observed
09-16 17:31 60m - / - PI4TX -16 / - 3 Partial capture
09-15 21:55 60m - / -13 DK4RH -11 / - 11 Partial capture
09-15 21:53 60m - / -13 DD6ZV -5 / - 3 ✓ Closing fragment
09-15 21:50 60m - / -12 DK7ZT -9 / - 3 Partial capture
09-15 21:48 60m - / -6 DL7GP -5 / - 2 ✓ Closing fragment
09-15 20:19 40m -12 / -20 EA5OL -4 / -7 3 ✓ Full exchange observed
09-15 12:35 40m - / -10 OE3FVU -9 / - 2 ✓ Closing fragment
09-15 12:19 40m - / - HG8LXL -8 / - 4 Partial capture
09-14 22:53 40m -22 / - SM7TZK - / - 3 Partial capture
09-14 22:46 40m -24 / - G4RCV -14 / -18 3 Partial capture
09-14 21:18 60m - / -14 EC3A -14 / - 2 ✓ Closing fragment
09-14 20:43 60m - / -15 F5HNQ -3 / - 3 ✓ Closing fragment
09-14 20:40 60m - / -24 F5RMK -7 / - 4 Partial capture
09-14 20:28 40m -14 / -16 EA8UP 0 / - 4 ✓ Closing observed
09-13 22:53 80m - / -25 S57TW +9 / - 3 Partial capture
09-13 22:52 80m - / -12 DF2RG +5 / - 2 ✓ Closing fragment
09-13 22:34 40m - / -15 EA1Y -16 / - 2 ✓ Closing fragment
09-13 22:33 40m - / -14 SV9QWC -4 / - 2 ✓ Closing fragment
09-13 19:14 60m - / -18 ON7GB 0 / - 4 ✓ Closing fragment
09-13 19:13 60m - / -16 OM5JG +6 / - 2 ✓ Closing fragment
09-13 17:12 40m - / -20 IQ7AAV/P +7 / - 2 Partial capture
09-12 22:38 40m - / -21 TA2/TF1OL -8 / - 2 Partial capture
09-12 21:54 40m -15 / - SP5MXZ - / -14 2 Partial capture
09-12 19:40 40m - / -2 IK5DET 0 / - 2 ✓ Closing fragment
09-12 19:10 60m - / -25 F5OZC -8 / - 2 ✓ Closing fragment
09-12 19:05 60m -18 / -16 9A60CBM -11 / -2 6 Partial capture
09-12 13:00 40m - / - HG8LXL -6 / - 6 Partial capture
09-11 22:12 40m - / - F5PBG +2 / - 4 Partial capture
09-11 22:11 40m -12 / - YL2KF - / -13 2 ✓ Closing fragment
09-11 22:09 40m - / -18 PE2LZ +7 / - 2 ✓ Closing fragment
09-10 22:59 60m - / -12 HA7TM -8 / - 2 ✓ Closing fragment
09-10 22:50 80m - / -25 DO6LE +4 / - 2 ✓ Closing fragment
09-10 22:45 80m - / -23 DK7ZT -2 / - 5 Partial capture
09-10 22:43 80m - / -14 OE8DDX +10 / - 3 ✓ Closing fragment
09-08 19:18 40m - / -8 9A60CBM +6 / - 7 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
204015 +10  366  IU5JAE F6HRP RR73
204200 +12  470  IU5JAE UB7K -12 (x3)
120630 -14 1728  IU5JAE F4DIA -09 (x2)
214100  -5 1906  IU5JAE DK7ZT +03 (x4)
214330  -6 2286  IU5JAE PI4TX JO22 (x5)
60m 
UTC    dB Audio  Message
220015 -12 1075  IU5JAE DK4RH R-13 (x2)
173145 -17 2280  IU5JAE PI4TX JO22 (x3)
202730  -3  635  IU5JAE II9IAGM -16
203030  +1 1070  IU5JAE DL5DQZ JO61
203030 -22 1901  IU5JAE DK7ZT -20
203100  -6 1069  IU5JAE DL5DQZ R-22 (x2)
203900 -16 1279  IU5JAE II8IHBC -11
204030  +5 1275  IU5JAE 9A4ZM JN86 (x2)
202215  +7  484  IU5JAE PA4CC -18 (x2)
80m 
UTC    dB Audio  Message
224430  -1  913  IU5JAE OE8DDX RR73
224530  +2 1112  IU5JAE DK7ZT -23 (x5)
225000  +4 1938  IU5JAE DO6LE -25 (x2)
225200  +5 1971  IU5JAE DF2RG -12 (x2)
225330  +6  292  IU5JAE S57TW -25 (x3)
221300 -16 1454  IU5JAE IK2ZJP -20 (x2)

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.

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