DL4JC — 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: JN39

Receiver-side FT8 activity involving DL4JC, decoded by SO8OO in southeastern Poland. 232 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 31 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-04.

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 232 FT8 messages attributed to DL4JC as the transmitting token by decoded message structure across 31 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (59%), followed by 40 m (34%) and 80 m (7%). Several six-hour UTC windows tied for the largest share (63%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10.5 dB.

Overview

232
Messages attributed
31
UTC dates decoded
70
Active 15-min windows
-10.5 dB
Estimated median S/N

Bands

80m · 16 40m · 79 20m · 137
First attributed message: 2026-06-06
Last attributed message: 2026-10-04 20:07 UTC

Observed FT8 message patterns

Attributed sample
232 messages
Active dates
31 UTC dates
Estimated median S/N
-10.5 dB
Estimated 10th-90th percentile
-20 to 0 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 70, moderate (-15 to -9 dB) 69, strong (≥ -8 dB) 93.

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 DL4JC 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 DL4JC

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
JN39 · 169 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,063 km (approx.)
Last such locator decoded
2026-10-04 20:03 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 UTCBandDL4JC S/NCounterpartCounterpart S/NMsgsCapture
10-09 14:09 10m - / -14 4X4FD -6 / - 2 ✓ Closing fragment
10-04 20:09 40m - / -8 9A3MRN +2 / - 2 ✓ Closing fragment
10-04 20:06 40m +5 / - F6FHZ - / -3 2 ✓ Closing fragment
10-04 20:04 40m +2 / - UX7UU - / -9 2 ✓ Closing fragment
10-04 20:03 40m -4 / - EA7UW -16 / -9 3 ✓ Closing observed
10-04 18:07 40m +2 / - YC2BUZ - / - 15 Partial capture
10-04 17:37 40m -7 / - YC2BUZ - / - 3 Partial capture
09-26 05:20 40m -4 / - ND9M - / - 2 Partial capture
09-25 21:20 40m -10 / - HK3C - / -30 4 Partial capture
09-15 19:21 40m -4 / - G4NKV/P - / - 3 Partial capture
09-15 19:09 40m 0 / - 4L6EZ - / -14 5 ✓ Closing fragment
09-15 19:05 40m -2 / - BD8FOD - / - 4 Partial capture
09-12 18:21 80m - / -3 DO9AO +12 / - 2 ✓ Closing fragment
09-12 18:11 80m -7 / -10 EH3ST -20 / - 5 ✓ Full exchange observed
09-12 18:01 80m -11 / - UB3ADO/P - / -10 3 Partial capture
09-12 17:58 80m -14 / -10 OM3KFF +6 / - 5 ✓ Full exchange observed
09-12 17:55 40m -6 / - 4X5GE - / - 3 Partial capture
09-12 17:35 40m -7 / -8 LA/DM2RM -1 / - 2 Partial capture
09-12 17:31 40m -9 / -12 SQ9AQQ -7 / - 3 ✓ Closing observed
09-12 17:27 40m -8 / - HB9SEX - / +2 4 ✓ Closing fragment
09-07 16:03 40m -4 / - Z68BR - / - 3 Partial capture
08-31 16:13 20m -9 / - BA4IE - / - 6 Partial capture
08-30 16:04 20m -9 / - BG2ATH - / - 5 Partial capture
08-27 08:22 20m -8 / - AH6WP - / - 5 Partial capture
08-27 08:18 20m -8 / - AD9GE - / - 2 ✓ Closing fragment
08-27 08:17 20m -8 / - NL8F - / - 2 Partial capture
08-27 08:07 20m -4 / - NL8F - / - 6 Partial capture
08-24 15:28 20m +1 / - YB7FII - / - 5 Partial capture
08-24 15:18 20m -2 / -12 JN1ILK +2 / +3 2 Partial capture
08-24 14:24 20m - / - DH1VY +3 / - 6 Partial capture
08-24 12:08 20m -8 / - NM3B - / -19 5 Partial capture
08-23 13:34 20m - / -2 F5URG +6 / - 5 ✓ Closing fragment
08-18 16:53 40m -18 / - BG7BVI - / - 2 Partial capture
08-18 16:51 40m -18 / - DH1VY - / - 2 ✓ Closing fragment
08-18 16:50 40m -14 / - PE1NAO - / - 2 ✓ Closing fragment
08-18 16:47 40m -20 / - ON3MOH/P - / - 2 ✓ Closing fragment
08-18 16:06 40m -20 / - G1UZL -24 / - 3 ✓ Closing observed
08-17 12:11 20m -19 / - N3FCP - / - 2 Partial capture
08-16 16:32 40m -20 / - VJ6X - / - 2 Partial capture
08-16 16:21 20m -15 / - C31HS - / - 7 Partial capture
08-16 16:11 20m -13 / - VU3OIP - / - 3 Partial capture
08-16 16:10 20m - / - DL9MKN -3 / - 2 Partial capture
08-16 06:44 20m -14 / - VJ6X - / - 2 Partial capture
08-16 06:38 20m -12 / - VK2BSA - / -22 3 ✓ Closing fragment
08-16 06:33 20m -14 / - VK4WJW - / -13 2 Partial capture
08-16 06:28 20m -14 / - MI7RDK - / -8 2 ✓ Closing fragment
08-16 06:19 20m -20 / - VK3HA - / - 2 ✓ Closing fragment
08-16 06:16 20m -18 / - UA6HGM - / -15 2 Partial capture
08-16 06:14 20m -14 / - ZL4TT - / - 2 ✓ Closing fragment
08-16 05:58 20m -23 / - KP3RE - / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

10m 
UTC    dB Audio  Message
140930  -5  954  DL4JC 4X4FD -14 (x2)
40m 
UTC    dB Audio  Message
181400  -1  662  YC2BUZ DL4JC JN39 (x4)
200245  -5 1966  CQ DL4JC JN39 (x2)
200330 -16 2136  DL4JC EA7UW IM76
200345  -5 1966  EA7UW DL4JC -09 (x2)
200445  +5  439  UX7UU DL4JC -09 (x2)
200645  +6  440  F6FHZ DL4JC -03 (x2)
200930  +2 1529  DL4JC 9A3MRN -08 (x2)
80m 
UTC    dB Audio  Message
175845 -17 1709  OM3KFF DL4JC JN39
175900  +8  209  DL4JC OM3KFF -10
175915 -13 1709  OM3KFF DL4JC R+14
175930  +5  209  DL4JC OM3KFF RR73
175945 -13 1709  OM3KFF DL4JC 73
180130 -12 1504  UB3ADO/P DL4JC JN39 (x3)
181115 -11  558  EH3ST DL4JC JN39
181130 -15 1558  DL4JC EH3ST -10
181145 -12  558  EH3ST DL4JC R+14
181200 -24 1558  DL4JC EH3ST RR73
181215  +1  558  EH3ST DL4JC 73
182100 +13  871  DL4JC DO9AO -03 (x2)
20m 
UTC    dB Audio  Message
082430 -10 1625  AH6WP DL4JC JN39
160415  -5 1907  BG2ATH DL4JC JN39 (x5)
161700  -6 2035  BG5JGG DL4JC JN39 (x2)
161300 -16 1888  BA4IE DL4JC JN39 (x6)
172730  -7 1978  XW4KV DL4JC JN39

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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