HZ1SK — 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: Saudi Arabia Most frequent locator attributed to this token: KL91

Receiver-side FT8 activity involving HZ1SK, decoded by SO8OO in southeastern Poland. 148 FT8 messages attributed to this token as transmitter, on 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-08-21.

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 148 FT8 messages attributed to HZ1SK as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Most decodes (78%) fell within the six-hour window 17:00-23:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -14 dB.

Overview

148
Messages attributed
4
UTC dates decoded
19
Active 15-min windows
-14 dB
Estimated median S/N

Bands

20m · 148
First attributed message: 2026-06-08
Last attributed message: 2026-08-21 22:02 UTC

Observed FT8 message patterns

Attributed sample
148 messages
Active dates
4 UTC dates
Estimated median S/N
-14 dB
Estimated 10th-90th percentile
-18 to -9 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 51, moderate (-15 to -9 dB) 85, strong (≥ -8 dB) 12.

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 HZ1SK in decoded directed-looking exchanges:

Most frequent locator attributed to HZ1SK

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
KL91 · 49 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
3,504 km (approx.)
Last such locator decoded
2026-08-21 21:58 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 UTCBandHZ1SK S/NCounterpartCounterpart S/NMsgsCapture
08-21 22:01 20m -12 / - N2DPF - / -16 2 ✓ Closing fragment
08-21 22:00 20m -17 / - N8CMB -22 / -16 6 Partial capture
08-21 21:59 20m -16 / - BA3QIQ - / -19 2 ✓ Closing fragment
08-21 21:54 20m -16 / - OK2CNI - / -2 3 ✓ Closing fragment
08-21 21:53 20m -13 / - JM4WUZ - / -19 4 ✓ Closing fragment
08-21 21:52 20m -13 / - JH1LPZ - / -13 2 ✓ Closing fragment
08-21 21:51 20m - / -15 <...> -7 / - 2 Partial capture
08-21 21:39 20m -13 / - A71UN - / -19 2 Partial capture
08-21 21:38 20m -12 / - WD4GBW - / -18 2 ✓ Closing fragment
08-21 21:31 20m -18 / - CT1BFP -9 / -9 8 ✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
215530 -19 1940  OK2CNI HZ1SK RR73
215600 -12 1940  JM4WUZ HZ1SK R-19 (x2)
215800 -15 1940  CQ HZ1SK KL91                         a1 (x2)
215900 -15 1940  BA3QIQ HZ1SK -19 (x2)
220000 -19 1940  N8CMB HZ1SK -16 (x2)
220045 -23 1940  HZ1SK N8CMB EM79
220130 -13 1940  N2DPF HZ1SK -16 (x2)
220245 -20 1940  HZ1SK N8CMB EM79 (x3)

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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