IK4UPK — 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: Italy Most frequent locator attributed to this token: JN54

Receiver-side FT8 activity involving IK4UPK, decoded by SO8OO in southeastern Poland. 479 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 21 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-10-20.

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 479 FT8 messages attributed to IK4UPK as the transmitting token by decoded message structure across 21 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (80%), followed by 60 m (6%) and 20 m (4%). Most decodes (57%) fell within the six-hour window 13:00-19:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (65%); the estimated median was -6 dB.

Overview

479
Messages attributed
21
UTC dates decoded
58
Active 15-min windows
-6 dB
Estimated median S/N

Bands

160m · 16 80m · 9 60m · 29 40m · 384 20m · 21 10m · 20
First attributed message: 2026-06-08
Last attributed message: 2026-10-20 18:39 UTC

Observed FT8 message patterns

Attributed sample
479 messages
Active dates
21 UTC dates
Estimated median S/N
-6 dB
Estimated 10th-90th percentile
-18 to +7 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 76, moderate (-15 to -9 dB) 93, strong (≥ -8 dB) 310.

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 IK4UPK 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 IK4UPK

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
JN54 · 175 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,013 km (approx.)
Last such locator decoded
2026-10-20 18:37 UTC

Other locator fields attributed to this token: JN55 (24).

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 UTCBandIK4UPK S/NCounterpartCounterpart S/NMsgsCapture
10-23 15:45 10m - / 0 EA5JKM -20 / - 4 Partial capture
10-20 18:38 40m +5 / - PD1ADA 0 / +7 5 Partial capture
10-20 18:37 40m 0 / +1 DL8TV +4 / +5 4 ✓ Full exchange observed
10-20 18:35 40m - / - RU6LC -4 / - 4 Partial capture
10-20 18:35 40m +2 / 0 DH5BM -4 / +4 6 ✓ Full exchange observed
10-20 18:32 40m -1 / - IU5VLR - / +8 2 Partial capture
10-20 18:30 40m +3 / - DB2HA +5 / +6 3 Partial capture
10-20 18:30 40m +2 / - DH0GBC +3 / +7 5 ✓ Full exchange observed
10-20 15:29 40m 0 / - IT9PHU - / -2 3 ✓ Closing fragment
10-20 15:25 40m -1 / - F4BJN - / -4 3 ✓ Closing fragment
10-20 15:22 40m -1 / - DG9ZL -2 / 0 5 ✓ Full exchange observed
10-20 15:22 40m -4 / - F3CJ - / -16 2 Partial capture
10-20 15:20 40m -4 / - SP4WJ - / -20 2 Partial capture
10-20 15:18 40m 0 / -5 IW2MLJ -24 / -3 3 ✓ Full exchange observed
10-20 15:18 40m - / - RX9WM -16 / - 2 Partial capture
10-20 15:17 40m 0 / +9 IK4TVP -10 / +9 4 ✓ Full exchange observed
10-20 15:15 40m +6 / - RN3YN - / - 2 Partial capture
10-18 13:18 40m -6 / - HB9ZHK - / -2 2 Partial capture
10-18 13:16 40m -6 / - DL1NRC -16 / - 4 ✓ Closing observed
10-18 13:08 40m -8 / - F3CJ - / -4 2 Partial capture
10-18 13:07 40m -12 / - HB9ZHK - / +8 2 Partial capture
10-18 13:05 40m -8 / -4 PD1ACS -17 / +8 3 ✓ Full exchange observed
10-18 13:05 40m -11 / -15 UA4FKT -9 / -2 6 ✓ Full exchange observed
10-18 13:02 40m -10 / - IZ4AIF -10 / - 4 ✓ Full exchange observed
10-18 13:00 40m -7 / - F3CJ - / +1 4 ✓ Closing fragment
10-18 12:59 40m -7 / -5 R2AL -5 / +3 4 ✓ Full exchange observed
10-18 12:57 40m -6 / - DF4WC -4 / - 6 ✓ Full exchange observed
10-18 12:54 40m -5 / +5 DL6EL 0 / - 3 ✓ Full exchange observed
10-15 16:02 40m -2 / - BD8ENX - / -25 3 ✓ Closing fragment
10-15 16:01 40m 0 / - RL2F - / -6 2 ✓ Closing fragment
10-15 16:00 40m +6 / - G6PWS - / -4 2 Partial capture
10-15 15:58 40m +1 / - SM7JKW - / +4 3 Partial capture
10-15 15:48 40m - / - R7MP -13 / - 3 Partial capture
10-15 15:46 40m +7 / - DB6FA - / -13 5 ✓ Closing fragment
10-15 15:43 40m - / - F4GUK -6 / - 3 Partial capture
10-15 15:43 40m +8 / - IK2ZJR 0 / - 5 ✓ Full exchange observed
10-15 15:41 40m +8 / - RA9LL - / -23 2 ✓ Closing fragment
10-14 20:37 40m - / -16 CT7AXN -4 / - 3 ✓ Closing fragment
10-14 16:42 40m -4 / -12 DA0M -10 / - 3 Partial capture
10-14 16:40 40m -5 / - R1AV - / +1 4 ✓ Closing fragment
10-14 16:34 40m +5 / - RA8AF - / -4 3 Partial capture
10-14 16:21 40m -5 / +9 HA1BF 0 / - 6 ✓ Full exchange observed
10-14 15:22 40m - / - DA1ST -4 / - 3 Partial capture
10-13 22:10 40m -10 / - F4NFM -20 / -5 3 Partial capture
10-13 22:09 40m - / +8 OS4K -20 / - 3 Partial capture
10-13 22:08 40m - / - RA4FUT -16 / - 2 Partial capture
10-12 04:56 80m - / - US2YW -1 / - 3 Partial capture
10-11 19:09 40m - / +10 DF7NO -9 / - 5 Partial capture
10-11 19:02 40m +2 / 0 EA3HMM -5 / - 5 ✓ Full exchange observed
10-11 19:01 40m +2 / - DL4DP - / +9 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

10m 
UTC    dB Audio  Message
144645  -4 2817  IK4UPK 4Z5AY +04 (x2)
154530 -17 1819  IK4UPK EA5JKM +00 (x4)
40m 
UTC    dB Audio  Message
183615  -6 2102  IK4UPK DH5BM 73
183630  +3 2102  DH5BM IK4UPK 73
183645  -4  531  IK4UPK RU6LC KN97
183700  +6 2102  CQ IK4UPK JN54
183715  -2  531  IK4UPK RU6LC KN97
183730  +7 2101  CQ IK4UPK JN54
183745  +2 1937  IK4UPK DL8TV +01
183800  -2 2102  DL8TV IK4UPK R+05
183815  +5 1937  IK4UPK DL8TV RR73
183830  +1 2101  DL8TV IK4UPK 73
183845  +0 1997  IK4UPK PD1ADA JO21
183900  +2 2101  PD1ADA IK4UPK +07
183915  +0 1997  IK4UPK PD1ADA R+17
183930  +8 2101  PD1ADA IK4UPK +07
183945  -1 1997  IK4UPK PD1ADA R+17
80m 
UTC    dB Audio  Message
233930  +3  565  IK4UPK DK8HC JO42
234000  +3 2502  IK4UPK DO9BAU R-14
234000  -1 1399  IK4UPK DL9KM JN68
234030 +12 2502  IK4UPK DO9BAU R-14
234030  +2 1399  IK4UPK DL9KM JN68
234100  +7 2502  IK4UPK DO9BAU R-14 (x7)
045615  +0 1915  IK4UPK US2YW KN28 (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.

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