DF7EF — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO30

Receiver-side FT8 activity involving DF7EF, decoded by SO8OO in southeastern Poland. 4,342 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 95 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-12.

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 4,342 FT8 messages attributed to DF7EF as the transmitting token by decoded message structure across 95 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (25%), followed by 40 m (23%) and 60 m (21%). Most decodes (72%) fell within the six-hour window 18:00-00:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (95%); the estimated median was +8 dB.

Overview

4,342
Messages attributed
95
UTC dates decoded
546
Active 15-min windows
+8 dB
Estimated median S/N

Bands

160m · 254 80m · 1,073 60m · 893 40m · 1,014 20m · 893 10m · 215
First attributed message: 2026-06-06
Last attributed message: 2026-10-12 00:27 UTC

Observed FT8 message patterns

Attributed sample
4,342 messages
Active dates
95 UTC dates
Estimated median S/N
+8 dB
Estimated 10th-90th percentile
-5 to +18 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 12, moderate (-15 to -9 dB) 210, strong (≥ -8 dB) 4,120.

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 DF7EF 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 DF7EF

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
JO30 · 3,095 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,053 km (approx.)
Last such locator decoded
2026-10-12 00:27 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 UTCBandDF7EF S/NCounterpartCounterpart S/NMsgsCapture
10-12 00:23 160m -3 / -12 CT2GQA -20 / -9 6 ✓ Full exchange observed
10-12 00:17 60m +2 / - AB0TA - / -21 2 Partial capture
10-12 00:16 60m +6 / - W8GEX - / -13 2 ✓ Closing fragment
10-11 23:48 60m -2 / - LA9JKA - / -7 2 ✓ Closing fragment
10-11 23:38 60m -2 / - K3UA - / -18 2 ✓ Closing fragment
10-11 22:57 60m +15 / - KC1KVA - / -16 3 ✓ Closing fragment
10-11 22:56 60m +15 / - EA4DM - / -1 2 ✓ Closing fragment
10-11 22:56 60m +6 / +8 F5OYA/P 0 / -11 11 ✓ Full exchange observed
10-11 22:54 60m - / - DL1UDO -15 / - 2 Partial capture
10-11 22:50 60m +13 / - VO1NC - / -12 5 ✓ Closing fragment
10-11 22:12 60m +14 / - EA9AR - / - 6 Partial capture
10-11 21:38 60m +12 / - BD4ITM - / -17 7 ✓ Closing fragment
10-11 20:04 60m +8 / - EA8DGI - / -14 4 ✓ Closing fragment
10-11 19:53 60m +11 / - YU1LD -4 / -16 11 ✓ Closing observed
10-11 18:47 60m +5 / - 9H6C - / -6 10 ✓ Closing fragment
10-11 18:45 60m +9 / - M0XXJ -6 / -5 2 Partial capture
10-11 18:16 60m +5 / - H49A - / -18 44 Partial capture
10-11 18:11 60m +4 / - 9H6C - / - 10 Partial capture
10-10 18:19 60m +7 / - R3DFS - / - 38 Partial capture
10-10 01:23 60m - / -11 IZ5ILH -8 / - 2 Partial capture
10-10 01:22 60m +11 / - SP6EF - / -12 3 ✓ Closing fragment
10-10 00:19 60m +10 / +7 5B4AMX -10 / -4 7 ✓ Full exchange observed
10-09 21:00 60m +8 / - A92AE - / -20 14 ✓ Closing fragment
10-09 20:58 60m +10 / - EU3A - / -2 4 ✓ Closing fragment
10-09 20:51 60m +7 / +6 9K2GR -8 / +1 10 ✓ Full exchange observed
10-09 19:52 60m +12 / -1 R3ZBY -6 / -10 9 ✓ Full exchange observed
10-09 18:54 60m +14 / - 4O/DL1FDH - / +2 5 Partial capture
10-09 04:31 80m +9 / - XE2X - / -18 10 ✓ Closing fragment
10-09 04:13 60m -6 / - TA4SSK - / -9 3 ✓ Closing fragment
10-09 03:35 160m +11 / +10 DL1VVQ -7 / -9 7 ✓ Full exchange observed
10-09 03:33 160m +10 / - HA0AA - / -15 3 ✓ Closing fragment
10-09 03:28 160m +6 / - UT5ZC - / - 6 Partial capture
10-09 03:25 160m +5 / - HA1DAE +8 / -10 5 ✓ Full exchange observed
10-09 03:15 160m +10 / - LY3BRA +1 / -8 5 ✓ Closing observed
10-09 03:12 160m +18 / - ES2AJ +8 / +2 7 ✓ Full exchange observed
10-09 03:09 160m +20 / -4 SV9ANK -18 / -16 6 ✓ Full exchange observed
10-09 02:58 60m +16 / -5 C31KC -2 / -2 5 ✓ Full exchange observed
10-09 02:26 60m +8 / - EA2BUW - / -14 3 ✓ Closing fragment
10-09 02:22 60m +7 / - UN7CL - / -13 5 ✓ Closing fragment
10-09 01:29 60m +17 / - PP2FRS - / - 18 Partial capture
10-09 01:20 60m +19 / - 8P6PD - / -16 3 ✓ Closing fragment
10-09 00:06 60m +16 / 0 SV9CVY +13 / +4 5 ✓ Full exchange observed
10-08 22:59 60m +15 / - EA8DQE - / - 21 Partial capture
10-08 19:29 60m +9 / +9 G0ABI 0 / - 4 Partial capture
10-08 19:24 60m +12 / - CU2AP - / -4 4 ✓ Closing fragment
10-07 22:04 60m +14 / - JW9DL - / -20 7 ✓ Closing fragment
10-07 19:14 60m +17 / - RK9S - / -8 15 ✓ Closing fragment
10-07 19:09 60m +12 / - 4X1ZQ -15 / -9 4 ✓ Closing observed
10-07 19:02 60m +16 / +7 HA5WA -21 / -1 5 ✓ Full exchange observed
10-07 18:43 60m +5 / - R3DQT - / -12 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

160m 
UTC    dB Audio  Message
033815  -4 1001  DF7EF DL1VVQ 73
014945  -6  744  RW9WJ DF7EF JO30
002230  +0 1978  CQ DX DF7EF JO30 (x2)
002315 -20 1979  DF7EF CT2GQA IM58
002400  +1 1978  CT2GQA DF7EF -09 (x2)
002500  +0 1978  CQ DX DF7EF JO30
002515 -24 1978  DF7EF CT2GQA R-12
002530  -8 1978  CT2GQA DF7EF RR73
002545 -15 1978  DF7EF CT2GQA 73
002600 -11 1978  CQ DX DF7EF JO30 (x4)
60m 
UTC    dB Audio  Message
235600 -14 1532  CQ DX DF7EF JO30 (x11)
001600  +4  928  W8GEX DF7EF -13 (x2)
001730  +4  928  AB0TA DF7EF -21 (x2)
80m 
UTC    dB Audio  Message
005745 +21  905  VO2ET DF7EF R-21 (x2)
010245 +23  340  LX2A DF7EF JO30 (x3)
043100 +10 2725  XE2X DF7EF JO30 (x10)
40m 
UTC    dB Audio  Message
213800 +11 2603  LU8GCJ DF7EF JO30 (x15)
20m 
UTC    dB Audio  Message
085315  +7 2850  YU5DR DF7EF JO30 (x2)
213645 +16  288  JH6XOD DF7EF JO30 (x4)
214415 +15  288  JI1GGW DF7EF JO30 (x3)
214745 +12 2259  N3FMC DF7EF 73
200730 -13  900  CQ DF7EF JO30
200745 -10  900  DF7EF MW7AHM IO81
200800 -15  900  CQ DX DF7EF JO30
200845 -17  900  DF7EF MW7AHM IO81
200900 -13  900  KB3MAW DF7EF -17
10m 
UTC    dB Audio  Message
105345  +5 2760  VU2SAA DF7EF JO30 (x15)

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.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee