DL4YCA/P — 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: Fed. Rep. of Germany Most frequent locator attributed to this token: JO42

Receiver-side FT8 activity involving DL4YCA/P, decoded by SO8OO in southeastern Poland. 135 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 12 UTC dates in the available aggregate history. Observed between 2026-07-10 and 2026-10-19.

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 135 FT8 messages attributed to DL4YCA/P as the transmitting token by decoded message structure across 12 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (75%), followed by 20 m (25%). Several six-hour UTC windows tied for the largest share (94%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -16 dB.

Overview

135
Messages attributed
12
UTC dates decoded
28
Active 15-min windows
-16 dB
Estimated median S/N

Bands

First attributed message: 2026-07-10
Last attributed message: 2026-10-19 11:44 UTC

Observed FT8 message patterns

Attributed sample
135 messages
Active dates
12 UTC dates
Estimated median S/N
-16 dB
Estimated 10th-90th percentile
-22 to -4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 70, moderate (-15 to -9 dB) 34, strong (≥ -8 dB) 31.

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.

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 DL4YCA/P

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
JO42 · 44 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
934 km (approx.)
Last such locator decoded
2026-10-19 11:41 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 UTCBandDL4YCA/P S/NCounterpartCounterpart S/NMsgsCapture
10-20 04:20 40m - / -17 IK4TVP -1 / - 4 Partial capture
10-19 13:59 40m - / -19 DJ0MAB -4 / - 3 Partial capture
10-19 11:45 40m - / +1 IN3KSO -18 / - 2 ✓ Closing fragment
10-19 11:43 40m -16 / +3 S55OO -15 / - 4 Partial capture
10-19 11:42 40m -22 / - <...> -12 / - 5 Partial capture
10-19 11:39 40m -8 / - DA0M - / - 2 Partial capture
10-19 11:33 40m -18 / -1 S55OO -13 / - 6 ✓ Closing observed
10-19 11:33 40m -19 / -9 UR8MH -13 / -10 6 ✓ Full exchange observed
10-19 11:29 40m -22 / - MM0HVU - / - 2 Partial capture
10-19 11:21 40m - / -2 DL7MDX -12 / - 2 ✓ Closing fragment
10-19 11:19 40m -24 / - MW7HZQ - / - 2 Partial capture
10-19 11:17 40m -20 / - OE3KLU +7 / +1 4 ✓ Full exchange observed
10-19 11:14 40m -16 / -16 IN3ADG -20 / -3 5 ✓ Full exchange observed
10-19 11:13 40m -20 / +1 DL2USR -10 / +1 4 ✓ Full exchange observed
10-06 09:37 40m - / -9 9A4ZM -1 / - 5 Partial capture
10-06 05:59 40m - / - DL5ARM +4 / - 2 Partial capture
10-06 05:25 40m - / - IZ2BKU +2 / - 2 Partial capture
10-06 04:46 40m - / +2 R7DX +7 / - 6 Partial capture
10-06 03:58 40m - / -12 R7DX -2 / - 2 Partial capture
10-06 03:00 40m - / -11 DL3MIB -5 / - 4 Partial capture
10-05 20:05 40m - / - R6FX -10 / - 2 Partial capture
10-05 18:51 40m - / -5 ON1BMM -8 / - 2 Partial capture
10-05 17:56 40m - / - S51XA -4 / - 2 Partial capture
10-05 15:35 40m - / - HG8LXL -1 / - 2 Partial capture
10-05 15:34 40m - / - S53AK +4 / - 2 Partial capture
10-05 14:05 40m - / -12 HG8LXL +2 / - 3 Partial capture
10-05 13:37 40m - / - HG8LXL -3 / - 4 Partial capture
10-05 13:30 40m - / - HG8LXL -4 / - 4 Partial capture
10-05 13:17 40m - / - HG8LXL -4 / - 4 Partial capture
10-05 12:04 40m -17 / - F4FYO - / -4 3 ✓ Closing fragment
10-05 12:03 40m -13 / - SP3GAX - / - 4 Partial capture
10-05 12:01 40m -14 / - IN3IBW - / -5 2 ✓ Closing fragment
10-05 11:58 40m -20 / - M7JBV - / -10 4 ✓ Closing fragment
10-05 11:54 40m -18 / -1 SQ2JAD -14 / +2 4 ✓ Full exchange observed
10-05 11:48 40m -11 / -20 II5GG -6 / 0 3 ✓ Full exchange observed
10-05 11:43 40m -18 / +10 ON5EA -21 / -3 3 ✓ Full exchange observed
10-05 11:41 40m -18 / - ON6SAT - / +3 3 ✓ Closing fragment
10-05 11:40 40m -24 / - M7JBV - / - 2 Partial capture
10-05 11:38 40m - / -1 HG8LXL -14 / - 4 ✓ Closing fragment
10-05 11:33 40m -8 / - G0CLT - / -1 3 ✓ Closing fragment
10-05 11:28 40m -23 / - G7HJX - / -16 2 ✓ Closing fragment
10-05 11:25 40m - / - HG8LXL -9 / - 5 Partial capture
10-05 11:24 40m -18 / - M7FHO - / -15 4 ✓ Closing fragment
10-05 11:22 40m -7 / - M9TEY - / -5 3 ✓ Closing fragment
09-30 12:44 40m - / - DG0BS -9 / - 2 Partial capture
09-30 12:01 40m - / - SP2ADY -10 / - 2 Partial capture
09-30 07:40 40m - / - ON5VKE -18 / - 2 Partial capture
09-30 05:43 40m - / - US2YW -2 / - 4 Partial capture
09-29 13:47 40m - / - OE9GWV -17 / - 6 Partial capture
09-29 13:38 40m -10 / - R4ZZ - / -8 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m
UTC    dB Audio  Message
114400 -21 2112  DL4YCA/P S55OO +03
114415 -16 1526  S55OO DL4YCA/P R+11
114515 -18 1540  DL4YCA/P IN3KSO +01 (x2)
135900  -7 1132  DL4YCA/P DJ0MAB JN49 (x3)
040145  +0 1371  DL4YCA/P ON8DM JO10 (x2)
042030  -1 1335  DL4YCA/P IK4TVP -17 (x4)
052545  -6 1731  DL4YCA/P IW5EIJ R-08
054915  -7 1266  DL4YCA/P OK1BLU JO80
20m
UTC    dB Audio  Message
130745  -7 1472  DL4YCA/P CT7AUT RR73
130800 -12 1471  CT7AUT DL4YCA/P 73
130815  +5 1472  DL4YCA/P GJ0KYZ IN89
130900  -3 1970  YO9PH DL4YCA/P 73
130915  +5 1472  DL4YCA/P GJ0KYZ IN89
130930  -4 1472  GJ0KYZ DL4YCA/P -04 (x4)
132415  -7 1471  DL4YCA/P CT7AUT IM67 (x6)

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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