AJ4F — 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: EL29

Receiver-side FT8 activity involving AJ4F, decoded by SO8OO in southeastern Poland. 88 FT8 messages attributed to this token as transmitter, on 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-06-17 and 2026-08-25.

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 88 FT8 messages attributed to AJ4F as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Several six-hour UTC windows tied for the largest share (68%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (80%); the estimated median was -6 dB.

Overview

88
Messages attributed
3
UTC dates decoded
7
Active 15-min windows
-6 dB
Estimated median S/N

Bands

20m · 88
First attributed message: 2026-06-17
Last attributed message: 2026-08-25 23:40 UTC

Observed FT8 message patterns

Attributed sample
88 messages
Active dates
3 UTC dates
Estimated median S/N
-6 dB
Estimated 10th-90th percentile
-11 to -1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 18, strong (≥ -8 dB) 70.

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 AJ4F in decoded directed-looking exchanges:

Most frequent locator attributed to AJ4F

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
EL29 · 39 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
9,213 km (approx.)
Last such locator decoded
2026-08-25 23:40 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 UTCBandAJ4F S/NCounterpartCounterpart S/NMsgsCapture
11-05 01:48 40m - / -10 F1PBZ -9 / - 3 Partial capture
10-31 23:52 80m - / - UX5UO +1 / - 3 Partial capture
10-29 01:17 40m - / - F1POK -5 / - 3 Partial capture
10-29 01:11 80m - / -17 ON1JP -6 / - 2 Partial capture
10-11 01:04 80m - / -16 F1PBZ +4 / - 3 Partial capture
10-11 00:53 80m - / -20 SV1BLD +8 / - 7 ✓ Closing fragment
10-11 00:47 80m - / -16 EC5W +12 / - 2 ✓ Closing fragment
10-01 00:11 80m - / +10 KP4AA -12 / - 2 ✓ Closing fragment
09-30 06:18 80m - / - PA3FPQ -7 / - 3 Partial capture
09-15 05:41 80m - / -13 DL3OCF +14 / - 2 Partial capture
09-15 05:38 80m - / - IU1TLG -1 / - 5 Partial capture
09-15 05:38 80m - / - PA3KUS -7 / - 11 Partial capture
09-15 05:36 80m - / -11 EA3AKY -15 / - 2 ✓ Closing fragment
09-07 08:11 40m - / - PE1NMM -18 / - 8 Partial capture
09-07 07:50 40m - / - DK8HC -11 / - 3 Partial capture
09-07 07:49 40m - / - DK2SW -11 / - 19 Partial capture
09-07 05:30 80m - / -15 EI4KF -11 / - 2 ✓ Closing fragment
09-07 05:23 80m - / -9 EA6Y -12 / - 3 ✓ Closing fragment
09-05 00:54 40m - / -7 DK7ZT -20 / - 2 Partial capture
08-31 23:58 40m - / - G5TV -10 / - 2 Partial capture
08-31 05:46 40m - / - G8KHF -10 / - 2 Partial capture
08-30 04:43 40m - / - F4DIA -10 / - 2 Partial capture
08-30 00:17 40m - / -5 EA8BI +2 / - 3 ✓ Closing fragment
08-30 00:12 40m - / -16 EA3AAY -12 / - 2 ✓ Closing fragment
08-25 23:33 20m -7 / - OY1HJ - / - 11 Partial capture
08-25 23:20 20m -3 / - OY1HJ - / - 13 Partial capture
08-25 23:16 20m -4 / - OY1HJ - / - 3 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
081130 -20 1689  AJ4F PE1NMM JO32 (x8)
130230  -2 1939  AJ4F UR3QFL KN77
011730  -7 2667  AJ4F F1POK JN27 (x3)
014800  -8 2587  AJ4F F1PBZ -10 (x3)
80m 
UTC    dB Audio  Message
005445  +6 2526  AJ4F SV1BLD RRR (x5)
010115  -6 2398  AJ4F EA4DZR IN80
010415  +2 2555  AJ4F F1PBZ -16 (x3)
010530 -14 1026  AJ4F W1AW/8 -07
011130  -6 1028  AJ4F ON1JP -17 (x2)
235230  -1 1176  AJ4F UX5UO KO50 (x3)
160m 
UTC    dB Audio  Message
021000 +13 1701  AJ4F OM5CM -21
20m 
UTC    dB Audio  Message
232745  -5 2891  OY1HJ AJ4F EL29 (x14)
041730 -14 1994  AJ4F EX8MCD -20

CW

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

Explore CW reception at SO8OO

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