F4JOY — 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: France Most frequent locator attributed to this token: JN15

Receiver-side FT8 activity involving F4JOY, decoded by SO8OO in southeastern Poland. 227 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 15 UTC dates in the available aggregate history. Observed between 2026-06-17 and 2026-11-01.

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 227 FT8 messages attributed to F4JOY as the transmitting token by decoded message structure across 15 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (84%), followed by 20 m (12%) and 40 m (2%). Several six-hour UTC windows tied for the largest share (98%), 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 0 dB.

Overview

227
Messages attributed
15
UTC dates decoded
35
Active 15-min windows
0 dB
Estimated median S/N

Bands

80m · 191 40m · 5 20m · 27 10m · 4
First attributed message: 2026-06-17
Last attributed message: 2026-11-01 13:44 UTC

Observed FT8 message patterns

Attributed sample
227 messages
Active dates
15 UTC dates
Estimated median S/N
0 dB
Estimated 10th-90th percentile
-12 to +8 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 12, moderate (-15 to -9 dB) 34, strong (≥ -8 dB) 181.

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 F4JOY 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 F4JOY

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
JN15 · 76 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,485 km (approx.)
Last such locator decoded
2026-11-01 13:44 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 UTCBandF4JOY S/NCounterpartCounterpart S/NMsgsCapture
11-01 13:43 10m -20 / - PR2PB - / - 2 Partial capture
10-18 20:34 80m -6 / - JE7JDL - / -20 2 Partial capture
10-18 20:28 80m -10 / -14 JR1AIB -2 / -20 7 ✓ Full exchange observed
10-18 20:27 80m -4 / -14 JK1OZS -4 / -17 7 ✓ Full exchange observed
10-18 20:27 80m - / -15 JA7GLO -10 / - 2 Partial capture
10-18 20:26 80m - / - R4FDD -8 / - 2 Partial capture
10-18 20:23 80m -8 / - HL1WP - / -14 4 Partial capture
10-14 20:30 80m +6 / - JR1AIB - / -16 4 Partial capture
10-14 20:29 80m +4 / - JJ3JHP - / -20 2 Partial capture
10-14 20:19 80m +5 / - BA5AN - / -18 4 ✓ Closing fragment
10-14 20:17 80m +7 / - 4X1UF - / -12 3 ✓ Closing fragment
10-14 20:16 80m +8 / - 2E0TZW - / -14 2 ✓ Closing fragment
10-14 20:14 80m +3 / - JR4OZR - / -14 2 Partial capture
10-14 20:08 80m +10 / - UN3P - / -14 2 Partial capture
10-14 20:07 80m - / +7 DO1ID +9 / - 2 Partial capture
10-14 20:06 80m +8 / - JA6LCJ -16 / -15 3 ✓ Closing observed
10-14 19:55 80m +7 / - D2UY - / -13 3 Partial capture
10-06 19:19 80m +1 / +7 OK2WMC +18 / -4 3 Partial capture
10-06 19:17 80m - / - SP3BPC -5 / - 7 Partial capture
10-06 19:14 80m +7 / -16 HF5A +10 / -11 5 ✓ Full exchange observed
10-06 19:11 80m - / - RC6OU +2 / - 2 Partial capture
10-06 19:10 80m +6 / - DK1MBY - / -16 2 ✓ Closing fragment
10-06 19:07 80m 0 / - F4LZZ - / 0 2 ✓ Closing fragment
10-06 19:05 80m 0 / -11 DA6YY -1 / -12 4 ✓ Full exchange observed
10-06 19:03 80m 0 / -18 UC6D -11 / -7 4 ✓ Full exchange observed
10-06 19:02 80m +2 / -10 UW5KW 0 / -13 4 ✓ Full exchange observed
10-06 18:59 80m 0 / -8 RX3ASQ -8 / -8 3 ✓ Full exchange observed
10-06 18:56 80m -4 / - EA1AGM - / -6 2 ✓ Closing fragment
10-06 18:55 80m -10 / +3 E70SZ -2 / -2 5 ✓ Full exchange observed
10-06 18:54 80m -8 / +6 F5LVR -3 / -5 4 ✓ Full exchange observed
10-06 18:51 80m - / - IU5HIU -21 / - 2 Partial capture
10-06 18:48 80m - / - DL/AD2LX -2 / - 3 ✓ Closing fragment
10-06 18:48 80m +3 / +6 R2AL +1 / -1 6 ✓ Full exchange observed
10-06 18:47 80m - / - F5LVR -7 / - 2 Partial capture
10-06 18:45 80m 0 / - RA0SCA - / -17 7 ✓ Closing fragment
10-06 18:42 80m -14 / - OM3TWM - / -7 2 Partial capture
10-06 18:42 80m - / - R2AL +8 / - 4 Partial capture
10-06 18:41 80m -10 / -18 II5GG -7 / +1 4 ✓ Full exchange observed
10-06 18:39 80m - / -15 YU65AEC 0 / - 2 Partial capture
09-26 19:59 80m +4 / -16 R3HH +4 / -11 4 ✓ Full exchange observed
09-26 19:27 40m - / - RZ4FWA -20 / - 2 Partial capture
09-26 19:22 40m -6 / - EX7DY - / -11 2 Partial capture
09-20 18:33 80m -8 / - EA3RO - / -5 2 ✓ Closing fragment
09-16 19:05 80m -7 / - 4L6EZ - / -14 2 Partial capture
09-15 19:24 80m - / - DL8TV +4 / - 3 Partial capture
09-15 19:14 80m 0 / -9 DO9BAU +4 / 0 5 ✓ Full exchange observed
09-15 19:11 80m -11 / +3 OH3GBW -7 / -15 7 ✓ Full exchange observed
09-15 19:10 80m - / - DO7DNY -4 / - 4 Partial capture
09-15 19:10 80m -7 / -14 EU1EU -2 / -12 4 ✓ Full exchange observed
09-15 19:00 80m -4 / -6 DG2EBG -14 / -4 5 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

10m 
UTC    dB Audio  Message
085245 -15 2483  F4JOY 5Z4VJ 73
133730 -24 1712  PY1SX F4JOY JN15
134215 -18 2033  TJ1GD F4JOY R-20
134315 -20 2033  PR2PB F4JOY JN15 (x2)
80m 
UTC    dB Audio  Message
202815  -6 2341  F4JOY JK1OZS R-14
202815  -9 3047  F4JOY JA7GLO -19
202815  -9 2285  F4JOY JA3FYC -20
202830  -2 2284  JK1OZS F4JOY -17
202845  -1  603  F4JOY JR1AIB PM95
202845  -4 2341  F4JOY JK1OZS R-14
202900  -7 2284  JK1OZS F4JOY RR73
202915  +0  603  F4JOY JR1AIB PM95
202915  +1 2341  F4JOY JK1OZS 73
202930 -15 2283  JR1AIB F4JOY -20
202945  -3  603  F4JOY JR1AIB R-14
203000  -5 2284  JR1AIB F4JOY RR73
203015  -2  603  F4JOY JR1AIB 73
203430  -4 2343  JE7JDL F4JOY -20 (x2)
40m 
UTC    dB Audio  Message
192215  -9  917  EX7DY F4JOY -11 (x2)
192645  -4  916  TN8GD F4JOY RR73
192730 -20 2027  F4JOY RZ4FWA LO23 (x2)
193245  +2  916  TA7DX F4JOY -12
193445  -4  917  EX7DY F4JOY -16

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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