EA7JFK — 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: Spain Most frequent locator attributed to this token: IM77

Receiver-side FT8 activity involving EA7JFK, decoded by SO8OO in southeastern Poland. 10 FT8 messages attributed to this token as transmitter, on 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-10-05 and 2026-11-02.

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 10 FT8 messages attributed to EA7JFK as the transmitting token by decoded message structure across 2 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 -13 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-13 dB

Estimated median S/N

Bands

40m · 10

First attributed message: 2026-10-05
Last attributed message: 2026-11-02 07:37 UTC

Observed FT8 message patterns

Attributed sample: 10 messages
Active dates: 2 UTC dates
Estimated median S/N: -13 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 3, moderate (-15 to -9 dB) 3, strong (≥ -8 dB) 4.

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 EA7JFK in decoded directed-looking exchanges:

AM5CV · Spain DL7DL · Fed. Rep. of Germany EA5HM · Spain J88IH · St. Vincent V31MA · Belize

Most frequent locator attributed to EA7JFK

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: IM77 · 4 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,538 km (approx.)
Last such locator decoded: 2026-11-02 07:37 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 UTC	Band	EA7JFK S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-02 07:35	40m	-13 / -	V31MA	- / -6	3	✓ Closing fragment
11-02 07:31	40m	-21 / -5	EA5HM	-7 / -	6	✓ Closing observed
11-02 07:25	40m	- / -10	DL7DL	-11 / -	13	✓ Closing fragment
11-02 07:24	40m	- / -	DJ0MAB	+5 / -	3	Partial capture
10-05 18:10	40m	+9 / -	AM5CV	- / -5	4	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
073130 -10  412  EA7JFK EA5HM IM99
073130 -12 1737  EA7JFK DL7DL JO62
073200  -5  412  EA7JFK EA5HM IM99 (x2)
073230 -10 1737  EA7JFK DL7DL R-10
073300  -4  413  EA7JFK EA5HM R-05
073300  -8 1737  EA7JFK DL7DL R-10
073315 -21 1739  EA5HM EA7JFK RR73
073330  -8  412  EA7JFK EA5HM 73
073330 -11 1737  EA7JFK DL7DL R-08 (x2)
073500 -12  544  V31MA EA7JFK IM77 (x3)
073730 -20 1229  VK2KET EA7JFK IM77

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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