IU7HDQ — 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 IU7HDQ, decoded by SO8OO in southeastern Poland. 24 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-08-23 and 2026-09-03.
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 24 FT8 messages attributed to IU7HDQ as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (79%), followed by 80 m (21%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (100%); the estimated median was +1 dB.
Overview
Bands
Last attributed message: 2026-09-03 20:49 UTC
Observed FT8 message patterns
- Attributed sample
- 24 messages
- Active dates
- 4 UTC dates
- Estimated median S/N
- +1 dB
- Estimated 10th-90th percentile
- -3 to +6 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 0, strong (≥ -8 dB) 24.
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 IU7HDQ 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 IU7HDQ
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
- JN81 · 14 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,009 km (approx.)
- Last such locator decoded
- 2026-09-03 20:46 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 | IU7HDQ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-03 20:45 | 40m | +1 / - | RI1FJL | - / -15 | 6 | ✓ Closing fragment |
| 09-03 20:40 | 80m | +4 / - | IR7MGGC | -6 / - | 3 | Partial capture |
| 09-03 20:36 | 160m | - / -9 | RZ6BS | -8 / - | 2 | ✓ Closing fragment |
| 08-27 21:37 | 80m | - / - | DK8HC | +2 / - | 5 | Partial capture |
| 08-23 18:45 | 40m | -2 / +3 | LY1DY | -9 / -25 | 5 | ✓ Full exchange observed |
| 08-23 18:33 | 80m | - / - | OK1DLA | +12 / - | 4 | Partial capture |
| 08-23 18:32 | 80m | +7 / +6 | II7MGXX | +6 / - | 3 | Partial capture |
| 08-23 18:19 | 40m | -2 / +3 | IU4PPL | -16 / -12 | 5 | ✓ Full exchange observed |
| 08-23 18:16 | 40m | +4 / - | SV8GXC | - / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 184515 -4 1340 LY1DY IU7HDQ -25 184530 -8 1339 IU7HDQ LY1DY R+03 184545 -1 1340 LY1DY IU7HDQ RR73 184600 -11 1339 IU7HDQ LY1DY 73 210015 -2 1341 <...> IU7HDQ JN81 (x2) 210330 -7 2065 IU7HDQ II7MGBT -06 211815 +0 1216 <...> IU7HDQ JN81 211900 +5 2065 IU7HDQ II7MGBT -09 204515 +1 1053 RI1FJL IU7HDQ JN81 (x6)
UTC dB Audio Message 183300 +8 1209 II7MGXX IU7HDQ R+16 183345 +8 423 IU7HDQ OK1DLA JN79 (x4) 213600 +5 1237 IU7HDQ II7MGXX +06 213700 +5 565 IU7HDQ DK8HC JO42 (x5) 203930 +3 1260 <...> IU7HDQ JN81 204030 +7 1702 IR7MGGC IU7HDQ JN81 204045 -6 1702 IU7HDQ IR7MGGC +19 204100 +2 1702 IR7MGGC IU7HDQ R+32
UTC dB Audio Message 203615 -10 2077 IU7HDQ RZ6BS -09 (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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