EA7JSA — 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 EA7JSA, decoded by SO8OO in southeastern Poland. 357 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 20 UTC dates in the available aggregate history. Observed between 2026-07-03 and 2026-11-06.

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 357 FT8 messages attributed to EA7JSA as the transmitting token by decoded message structure across 20 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (52%), followed by 40 m (46%) and 10 m (2%). Several six-hour UTC windows tied for the largest share (89%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

357
Messages attributed
20
UTC dates decoded
47
Active 15-min windows
-11 dB
Estimated median S/N

Bands

80m · 1 60m · 1 40m · 163 20m · 186 10m · 6
First attributed message: 2026-07-03
Last attributed message: 2026-11-06 17:28 UTC

Observed FT8 message patterns

Attributed sample
357 messages
Active dates
20 UTC dates
Estimated median S/N
-11 dB
Estimated 10th-90th percentile
-18 to -5 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 74, moderate (-15 to -9 dB) 164, strong (≥ -8 dB) 119.

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 EA7JSA 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 EA7JSA

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 · 216 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
2,538 km (approx.)
Last such locator decoded
2026-11-06 17:28 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 UTCBandEA7JSA S/NCounterpartCounterpart S/NMsgsCapture
10-22 17:31 40m -10 / - SP5MIG - / - 2 ✓ Closing fragment
10-22 17:26 40m - / -3 EA4D -8 / - 4 ✓ Closing fragment
10-22 17:15 40m -12 / - EA4RKC - / -4 3 ✓ Closing fragment
10-22 17:14 40m -13 / -9 PA7D -10 / -16 5 Partial capture
10-22 17:11 40m - / -15 R6DVV -13 / - 4 Partial capture
10-22 17:07 40m - / - R6DVV -17 / - 3 Partial capture
10-22 16:57 40m - / -3 DL9YBH -11 / - 3 Partial capture
10-18 16:11 10m -16 / - SV8EUB - / -5 2 ✓ Closing fragment
10-09 02:50 40m - / - F6FHZ -11 / - 4 Partial capture
10-09 02:47 40m -11 / - C5R - / - 3 Partial capture
10-09 02:42 40m -7 / - TA3NK - / -4 7 Partial capture
10-09 02:41 40m -8 / - K0KXF - / - 2 Partial capture
10-09 02:40 40m -12 / - WP4TUN - / -18 2 ✓ Closing fragment
10-09 02:36 40m -11 / - G3TKT - / -8 2 ✓ Closing fragment
10-09 02:32 40m -13 / - K0KXF - / - 2 Partial capture
10-09 02:30 60m - / - G3WGC -13 / - 9 Partial capture
10-09 02:28 80m - / - 9A5E +10 / - 7 Partial capture
10-09 02:28 80m - / -18 GM6URC -7 / - 4 Partial capture
10-07 18:01 40m - / - DL7DL +8 / - 3 Partial capture
10-07 17:57 40m -4 / - LA8JKA - / - 3 Partial capture
10-07 17:53 40m -6 / -15 LA1PHA -7 / -22 5 ✓ Full exchange observed
10-07 17:44 40m - / -9 DK5DW -10 / - 9 Partial capture
10-07 17:44 40m - / -7 G0UDE -16 / - 2 ✓ Closing fragment
10-07 17:38 40m - / - IK2YYO -6 / - 2 Partial capture
10-06 17:38 40m -9 / -7 EA5KAI -20 / - 3 ✓ Closing observed
10-06 17:36 40m -9 / - DK0DK -6 / -7 3 ✓ Closing observed
10-06 17:35 40m - / - F1IQH -17 / - 2 Partial capture
10-06 17:14 40m - / - IU3BTF -8 / - 2 Partial capture
09-05 03:55 40m - / - RV6F -14 / - 5 Partial capture
09-05 03:53 40m -20 / -9 SV5BYP +1 / - 3 ✓ Closing observed
09-05 03:02 40m -8 / - WO7V - / - 4 Partial capture
09-05 02:58 40m -7 / - WO7V - / - 2 Partial capture
09-05 02:57 40m -8 / - NE9U - / -12 6 ✓ Closing fragment
09-05 02:51 40m -8 / - OZ1LTQ - / - 2 Partial capture
09-05 02:45 40m -11 / - OH1RM - / -19 4 ✓ Closing fragment
08-29 17:00 20m -8 / -1 LX7I +9 / - 2 Partial capture
08-29 16:59 20m -17 / -13 DL4DD -2 / - 3 Partial capture
08-28 01:53 40m -6 / - EA4DZR - / -15 3 ✓ Closing fragment
08-28 01:48 40m -9 / - W4DXM -14 / -22 5 ✓ Closing observed
08-28 01:44 40m -10 / -5 EA3AAY -10 / -8 6 ✓ Full exchange observed
08-28 01:42 40m -6 / - KD1J -10 / -22 5 ✓ Closing observed
08-28 01:36 40m -7 / -7 CU6AB -10 / - 3 ✓ Closing observed
08-28 01:36 40m -5 / - TA3NK -4 / -22 14 Partial capture
08-28 01:31 40m -7 / +2 EA7R +5 / -19 6 ✓ Full exchange observed
08-28 01:28 40m -6 / - <...> - / -17 2 Partial capture
08-28 01:24 40m -9 / - LZ2CC - / -19 7 ✓ Closing fragment
08-10 04:26 40m - / -9 DL5MKR -18 / - 4 Partial capture
08-10 04:16 40m - / -13 DH5BM -16 / - 11 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
171645 -13 2275  DK2MAX EA7JSA -16
171715 -13 1022  PA7D EA7JSA -16
171730 -11 1344  EA7JSA PA7D R-09 (x2)
172115 -14 1020  CQ EA7JSA IM77
172600  -8 1019  EA7JSA EA4D IN80 (x4)
172845  -3 1017  CQ EA7JSA IM77 (x2)
173115  -8 1016  SP5MIG EA7JSA RR73 (x2)
173345  +0 2735  YD1EQN EA7JSA IM77
172800 -14 1122  LZ911TD EA7JSA IM77
10m 
UTC    dB Audio  Message
161145 -16 1048  SV8EUB EA7JSA R-05 (x2)
161345 -13 1039  CQ EA7JSA IM77 (x2)
161515 -15 1032  KN6IBW EA7JSA -18
161615 -18 1029  YY5EHT EA7JSA -12
60m 
UTC    dB Audio  Message
023015 -21 1501  CQ EA7JSA IM77                        a1
023030  -8 1959  EA7JSA G3WGC JO02 (x10)
80m 
UTC    dB Audio  Message
022800 -24 1020  CQ EA7JSA IM77                        a1
022815  -4 1693  EA7JSA GM6URC -18
022815 +10 2134  EA7JSA 9A5E JN75
022845 -12 1693  EA7JSA GM6URC -18
022845 +13 2134  EA7JSA 9A5E JN75
022915  -7 1694  EA7JSA GM6URC -18
022915 +14 2134  EA7JSA 9A5E JN75
022945  -6 1694  EA7JSA GM6URC -18
022945  +7 2134  EA7JSA 9A5E JN75 (x4)
20m 
UTC    dB Audio  Message
021930  -5  857  EA7JSA XQ1KK RR73
165900 -17 1170  DL4DD EA7JSA IM77
165915  -4 2796  EA7JSA DL4DD -13 (x2)
170000  -8 1167  LX7I EA7JSA IM77
170045  +9 1934  EA7JSA LX7I -01
170230  -5 1162  DL4DD EA7JSA -15

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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