NP4EI — 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: Puerto Rico Most frequent locator attributed to this token: FK68

Receiver-side FT8 activity involving NP4EI, decoded by SO8OO in southeastern Poland. 18 FT8 messages attributed to this token as transmitter, on 40m, across 5 UTC dates in the available aggregate history. Observed between 2026-08-29 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 18 FT8 messages attributed to NP4EI as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). In this small sample, the estimated median decoder S/N was -23 dB; no usual signal pattern is inferred.

Overview

18
Messages attributed
5
UTC dates decoded
10
Active 15-min windows
-23 dB
Estimated median S/N

Bands

40m · 18
First attributed message: 2026-08-29
Last attributed message: 2026-10-20 01:18 UTC

Observed FT8 message patterns

Attributed sample
18 messages
Active dates
5 UTC dates
Estimated median S/N
-23 dB
S/N percentile sample
Too small
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 13, moderate (-15 to -9 dB) 5, 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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with NP4EI 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 NP4EI

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
FK68 · 14 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,360 km (approx.)
Last such locator decoded
2026-10-20 01:18 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 UTCBandNP4EI S/NCounterpartCounterpart S/NMsgsCapture
10-20 01:37 40m - / - DG7JG -14 / - 3 Partial capture
10-20 01:33 40m - / - ON8WR -11 / - 3 Partial capture
10-20 01:28 40m - / -16 R5DT -6 / - 2 ✓ Closing fragment
10-20 01:21 40m - / -15 IZ2ACM +7 / - 6 Partial capture
10-20 01:17 40m - / -6 F1PBZ +10 / - 2 ✓ Closing fragment
10-20 01:14 40m - / - HB9TIH +13 / - 5 Partial capture
09-07 01:45 60m - / -13 SM6CCO +6 / - 4 ✓ Closing fragment
09-04 23:21 40m - / -15 DL5PH -9 / - 3 ✓ Closing fragment
09-04 23:19 40m - / -21 RV3SBS/P -1 / - 3 ✓ Closing fragment
09-04 23:04 40m - / -12 OS4K -12 / - 3 Partial capture
09-04 23:00 40m - / -21 CT2HEX -15 / - 3 ✓ Closing fragment
09-04 22:38 40m - / -10 OS4K -19 / - 4 Partial capture
09-04 22:33 40m - / - RW6MDU -6 / - 2 Partial capture
09-04 22:24 40m - / -16 F1PBZ -12 / - 4 ✓ Closing fragment
09-04 22:24 40m - / -11 LB7ZG -8 / - 3 ✓ Closing fragment
09-04 22:22 40m - / -25 EJ8JCB -10 / - 2 Partial capture
08-31 01:44 40m -12 / - TT1GD - / - 2 Partial capture
08-31 01:25 40m - / -16 A41KB -5 / - 2 Partial capture
08-29 23:51 40m -24 / - LX1FP -6 / - 3 Partial capture
08-29 23:47 40m -23 / - S54L -16 / -9 4 ✓ Closing observed
08-29 23:35 40m - / - RD7O -10 / - 5 Partial capture
08-29 23:11 40m - / -15 F4MZI -4 / - 2 Partial capture
08-29 23:08 40m - / - LZ5UY -7 / - 5 Partial capture
08-29 23:06 40m -23 / -3 DM9EE -12 / - 3 ✓ Closing observed
08-29 23:05 40m -23 / -5 N0YY -17 / +3 3 ✓ Full exchange observed
08-29 22:39 40m - / -16 EA1IOK -15 / - 4 ✓ Closing fragment
08-29 22:37 40m - / - G7LHK -6 / - 4 Partial capture
08-29 22:37 40m - / - ON4VMA -3 / - 2 Partial capture
08-29 22:34 40m - / -11 F4FTV -1 / - 4 ✓ Closing fragment
08-29 22:33 40m - / - 2E0DGP +2 / - 4 Partial capture
08-29 22:31 40m - / -10 UR1CCT +6 / - 3 ✓ Closing fragment
08-29 22:29 40m - / - DL6FC -2 / - 6 Partial capture
08-29 22:24 40m - / -15 IZ8VYU +5 / - 3 ✓ Closing fragment
08-11 20:49 20m - / - OK4SD -4 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
012100  +6 1253  NP4EI IZ2ACM JN45 (x6)
012830  -5  389  NP4EI R5DT R-16 (x2)
013300  -9 1678  NP4EI ON8WR JO11 (x3)
013430 -19 1679  NP4EI PD9JPV JO22
013730 -15 1337  NP4EI DG7JG JO31 (x3)
60m 
UTC    dB Audio  Message
014500  +6 2324  NP4EI SM6CCO JO78 (x4)
20m 
UTC    dB Audio  Message
204900  -2 2079  NP4EI OK4SD JN79 (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.

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