DH7SB — reception at SO8OO
Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.
FT8 activity
Receiver-side FT8 activity involving DH7SB, decoded by SO8OO in southeastern Poland. 188 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, across 7 UTC dates in the available aggregate history. Observed between 2026-08-31 and 2026-10-29.
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 188 FT8 messages attributed to DH7SB as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (39%), followed by 60 m (27%) and 80 m (22%). Most decodes (76%) 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 (63%); the estimated median was -6 dB.
Overview
Bands
Last attributed message: 2026-10-29 06:15 UTC
Observed FT8 message patterns
- Attributed sample
- 188 messages
- Active dates
- 7 UTC dates
- Estimated median S/N
- -6 dB
- Estimated 10th-90th percentile
- -17 to +1 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 23, moderate (-15 to -9 dB) 46, 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 DH7SB 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 DH7SB
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
- JN48 · 98 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 941 km (approx.)
- Last such locator decoded
- 2026-10-05 23:28 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 UTC | Band | DH7SB S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-29 06:14 | 60m | -17 / - | TK/DH7SB | - / -8 | 3 | Partial capture |
| 10-26 22:51 | 160m | -12 / - | TK/DH7SB | - / -8 | 2 | Partial capture |
| 10-23 03:03 | 80m | +11 / - | P4/WE9V | - / -12 | 2 | Partial capture |
| 10-05 23:33 | 40m | - / -7 | EA5JMM | -13 / - | 2 | Partial capture |
| 10-05 23:11 | 60m | -4 / -1 | 9A7BB | -3 / -6 | 5 | ✓ Full exchange observed |
| 10-05 23:06 | 40m | -10 / - | A61DD | - / - | 3 | Partial capture |
| 10-05 23:05 | 40m | -10 / - | LZ1ZF | - / -9 | 2 | ✓ Closing fragment |
| 10-01 10:02 | 40m | -22 / - | IQ4JO | - / -15 | 2 | Partial capture |
| 10-01 09:59 | 40m | -21 / -4 | DG3YEV | -2 / -3 | 5 | ✓ Full exchange observed |
| 09-29 20:33 | 60m | -4 / -14 | IK2EST | -10 / -20 | 7 | ✓ Full exchange observed |
| 09-29 20:32 | 60m | - / - | DL9NEI | -5 / - | 3 | Partial capture |
| 09-29 20:29 | 60m | -4 / -2 | F4HER | -8 / -4 | 5 | ✓ Full exchange observed |
| 09-29 20:28 | 60m | -12 / -11 | DK5AN | -11 / -21 | 10 | ✓ Full exchange observed |
| 09-29 20:26 | 60m | -10 / - | TK4TH | - / -10 | 2 | ✓ Closing fragment |
| 09-29 20:24 | 60m | -6 / 0 | G3UHU | -4 / -9 | 5 | ✓ Full exchange observed |
| 09-29 20:22 | 60m | -10 / -4 | OZ5AGJ | -13 / -23 | 7 | ✓ Full exchange observed |
| 09-29 20:20 | 60m | - / +4 | TM47CDXC | -6 / - | 2 | Partial capture |
| 09-29 20:07 | 80m | -3 / -7 | OE8DDX | +13 / -14 | 5 | ✓ Full exchange observed |
| 09-29 20:05 | 160m | - / - | SV9MBH | -22 / - | 3 | ✓ Closing fragment |
| 09-29 19:58 | 160m | -6 / - | PA3FR | -9 / - | 3 | ✓ Closing observed |
| 09-29 19:54 | 160m | - / -21 | SV9MBH | -18 / - | 8 | ✓ Closing fragment |
| 09-29 19:51 | 160m | -9 / -5 | G4LPP | -18 / -17 | 5 | ✓ Full exchange observed |
| 09-29 19:47 | 160m | -10 / - | YT1T | - / - | 2 | Partial capture |
| 09-29 19:44 | 160m | -3 / -6 | SP9MRO | +4 / -8 | 5 | ✓ Full exchange observed |
| 09-29 19:25 | 160m | -18 / - | IZ0RPS | - / -12 | 2 | ✓ Closing fragment |
| 09-29 19:23 | 160m | -8 / - | DM5KM | -2 / -4 | 4 | ✓ Closing observed |
| 09-29 19:20 | 160m | +1 / -2 | SM5A | +7 / -4 | 5 | ✓ Full exchange observed |
| 09-29 19:13 | 160m | -3 / - | DO9AO | -24 / - | 2 | ✓ Closing observed |
| 09-29 19:07 | 160m | +1 / -3 | OH5KNL | +11 / -14 | 5 | ✓ Full exchange observed |
| 09-29 19:04 | 160m | -6 / +6 | OI5AY | -8 / -21 | 7 | ✓ Full exchange observed |
| 09-29 19:04 | 160m | -2 / - | ON6MAT | -22 / -10 | 3 | ✓ Closing observed |
| 09-29 19:01 | 160m | - / - | SV1EKI | -14 / - | 4 | Partial capture |
| 09-29 19:00 | 160m | -3 / -18 | LA9JKA | -14 / -8 | 11 | ✓ Full exchange observed |
| 09-29 18:58 | 160m | -4 / -9 | IK0XBX | +6 / - | 3 | ✓ Closing observed |
| 09-29 18:52 | 160m | -2 / +2 | OE3KJO | +4 / - | 5 | Partial capture |
| 09-29 18:42 | 160m | 0 / -17 | SQ3LMR | -4 / - | 3 | ✓ Closing observed |
| 09-29 18:31 | 160m | - / - | DK1REM | -9 / - | 3 | Partial capture |
| 09-29 18:31 | 160m | -8 / -4 | G0HZG | -12 / -22 | 5 | ✓ Full exchange observed |
| 09-29 18:29 | 160m | -9 / - | HA5AO | +17 / -3 | 4 | ✓ Closing observed |
| 09-29 18:26 | 160m | -9 / - | <...> | - / -13 | 3 | Partial capture |
| 09-29 18:11 | 80m | -2 / - | DF2JK | - / -11 | 2 | ✓ Closing fragment |
| 09-29 18:09 | 80m | - / - | HF5A | +3 / - | 2 | Partial capture |
| 09-29 18:09 | 80m | -4 / +2 | PA3GAE | -7 / -10 | 5 | ✓ Full exchange observed |
| 09-29 18:07 | 80m | -4 / -2 | DO2TO | +14 / -5 | 4 | ✓ Full exchange observed |
| 09-29 18:04 | 80m | - / - | HF5A | -4 / - | 2 | Partial capture |
| 09-29 18:01 | 80m | -6 / -1 | F5OIH | -4 / -13 | 5 | ✓ Full exchange observed |
| 09-29 17:53 | 40m | -4 / -11 | OE8DDX | +9 / -2 | 5 | ✓ Full exchange observed |
| 08-31 20:35 | 20m | - / -5 | HS0ZOY | +4 / - | 2 | ✓ Closing fragment |
| 08-31 20:34 | 20m | - / -9 | MI7RDK | +4 / - | 2 | ✓ Closing fragment |
| 08-31 20:32 | 20m | - / -3 | WB2BIN | -20 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 203545 -13 1026 DH7SB IK2EST -14 203600 +1 1027 IK2EST DH7SB R-20 203615 -7 1026 DH7SB IK2EST RR73 203630 -3 1026 IK2EST DH7SB 73 231100 -7 1026 CQ DH7SB JN48 (x2) 231145 +7 2266 DH7SB 9A7BB JN75 231200 -2 1026 9A7BB DH7SB -06 231215 +2 2266 DH7SB 9A7BB R-01 231230 -5 1026 9A7BB DH7SB RR73 231245 -17 2266 DH7SB 9A7BB 73 231800 +2 1026 CQ DH7SB JN48 061430 -17 1028 TK/DH7SB DH7SB -08 (x3)
UTC dB Audio Message 195830 -7 1000 PA3FR DH7SB JN48 195900 -24 1483 DH7SB SV9MBH RR73 195915 -9 1755 DH7SB PA3FR RR73 195930 -21 1484 DH7SB SV9MBH RR73 195930 -6 999 PA3FR DH7SB 73 200000 -24 1483 DH7SB SV9MBH RR73 200000 +1 999 CQ DH7SB JN48 200530 -18 1484 DH7SB SV9MBH RR73 (x3) 232630 +1 999 CQ DH7SB JN48 (x3) 225130 -9 900 TK/DH7SB DH7SB -08 (x2)
UTC dB Audio Message 181015 +1 2415 DH7SB HF5A JO92 181030 -1 997 CQ DH7SB JN48 (x2) 181130 -1 998 DF2JK DH7SB -11 (x2) 181230 +1 998 CQ DH7SB JN48 200700 -7 998 OE8DDX DH7SB JN48 200715 +14 720 DH7SB OE8DDX -07 200730 -3 998 OE8DDX DH7SB R-14 200745 +12 720 DH7SB OE8DDX RR73 200800 +0 998 OE8DDX DH7SB 73 232130 +6 998 ON8FAB DH7SB JN48 030315 +9 753 P4/WE9V DH7SB R-12 (x2) 033445 +5 753 TK/DH7SB DH7SB -13
UTC dB Audio Message 175715 -8 572 DH7SB RU3T LO16 095945 -20 2030 DG3YEV DH7SB JN48 100000 -3 852 DH7SB DG3YEV -04 100015 -22 2030 DG3YEV DH7SB R-03 100030 -2 852 DH7SB DG3YEV RR73 100045 -22 2031 DG3YEV DH7SB 73 100230 -20 2030 IQ4JO DH7SB R-15 (x2) 230530 -9 1030 LZ1ZF DH7SB R-09 (x2) 230630 -13 1029 A61DD DH7SB JN48 (x3) 233345 -15 1240 DH7SB EA5JMM -07 (x2)
UTC dB Audio Message 203215 -24 1425 DH7SB WB2BIN -03 (x2) 203400 +4 539 DH7SB MI7RDK -09 (x2) 203530 +5 393 DH7SB HS0ZOY -05 (x2)
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.
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