KJ4IHN — 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: United States Most frequent locator attributed to this token: EM63

Receiver-side FT8 activity involving KJ4IHN, decoded by SO8OO in southeastern Poland. 28 FT8 messages attributed to this token as transmitter, on 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-08-27 and 2026-08-28.

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 28 FT8 messages attributed to KJ4IHN as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was -8 dB; no usual signal pattern is inferred.

Overview

28
Messages attributed
2
UTC dates decoded
8
Active 15-min windows
-8 dB
Estimated median S/N

Bands

20m · 28
First attributed message: 2026-08-27
Last attributed message: 2026-08-28 00:59 UTC

Observed FT8 message patterns

Attributed sample
28 messages
Active dates
2 UTC dates
Estimated median S/N
-8 dB
Estimated 10th-90th percentile
-14 to -2 dB
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 11, strong (≥ -8 dB) 17.

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 KJ4IHN in decoded directed-looking exchanges:

Most frequent locator attributed to KJ4IHN

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
EM63 · 12 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,401 km (approx.)
Last such locator decoded
2026-08-28 00:59 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 UTCBandKJ4IHN S/NCounterpartCounterpart S/NMsgsCapture
08-29 06:05 20m - / -8 SV9TRN -5 / - 3 Partial capture
08-29 05:36 20m - / -11 IT9CCB +3 / - 3 ✓ Closing fragment
08-29 05:18 20m - / -17 SV0LS -7 / - 3 Partial capture
08-29 04:42 20m - / -15 SV8JVM -18 / - 2 Partial capture
08-29 04:19 20m - / -14 5Z4VJ -14 / - 3 ✓ Closing fragment
08-28 03:54 20m - / -13 R2PM +8 / - 4 ✓ Closing fragment
08-27 05:31 20m - / -8 R6DYK -2 / - 2 ✓ Closing fragment
08-27 05:24 20m - / - RU3KV +10 / - 3 Partial capture
08-27 05:22 20m -2 / - SP4TKA - / 0 2 ✓ Closing fragment
08-27 05:21 20m 0 / - Z31PM - / - 2 Partial capture
08-27 05:07 20m - / - DL3HBF -20 / - 2 Partial capture
08-27 05:06 20m -11 / -12 IT9CCB +15 / - 4 ✓ Closing observed
08-27 05:03 20m - / -18 LZ3BS +7 / - 4 ✓ Closing fragment
08-27 04:49 20m -11 / - F4EGM - / -1 3 ✓ Closing fragment
08-27 04:48 20m -5 / -12 IZ4JMA -10 / - 2 ✓ Closing observed
08-27 04:42 20m -3 / -16 RC6OG -6 / +9 3 Partial capture
08-27 04:20 20m -11 / -11 OE9KFV -3 / +10 5 ✓ Full exchange observed
08-27 04:15 20m -8 / - OH1EDK -8 / -5 3 ✓ Closing observed
08-27 04:08 20m - / -21 R6TA +2 / - 4 ✓ Closing fragment
08-27 03:53 20m - / -15 R6LE +16 / - 6 Partial capture
08-27 03:19 20m - / -19 R4HM +21 / - 3 ✓ Closing fragment
08-27 00:17 20m - / -12 F1PBZ +12 / - 2 ✓ Closing fragment
08-27 00:14 20m - / -12 ON1DGN -14 / - 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
040130 -12 2099  KJ4IHN UI5D LO03
041915 -13 2102  KJ4IHN 5Z4VJ KI88 (x3)
044230 -17 1132  KJ4IHN SV8JVM -15 (x2)
051800  -9 1016  KJ4IHN SV0LS KN00 (x3)
053630  +6 3016  KJ4IHN IT9CCB JM76 (x3)
060500  -3 3015  KJ4IHN SV9TRN -08 (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

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