HF50HK — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland

Receiver-side FT8 activity involving HF50HK, decoded by SO8OO in southeastern Poland. 337 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 10 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-08-22.

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 337 FT8 messages attributed to HF50HK as the transmitting token by decoded message structure across 10 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (87%), followed by 40 m (6%) and 160 m (4%). Most decodes (97%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (91%); the estimated median was +7 dB.

Overview

337

Messages attributed

UTC dates decoded

Active 15-min windows

+7 dB

Estimated median S/N

Bands

160m · 13 80m · 294 40m · 20 20m · 10

First attributed message: 2026-06-11
Last attributed message: 2026-08-22 22:48 UTC

Observed FT8 message patterns

Attributed sample: 337 messages
Active dates: 10 UTC dates
Estimated median S/N: +7 dB
Estimated 10th-90th percentile: -8 to +14 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 8, moderate (-15 to -9 dB) 23, strong (≥ -8 dB) 306.

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 HF50HK in decoded directed-looking exchanges:

EN35UKR · Ukraine ×4 II7MGBA · Italy ×3 DB100FT · Fed. Rep. of Germany ×2 OZ/KD0NDU · Denmark ×2 IS0/IK2YCW · Sardinia RK3DWA/3 · European Russia F8KIC/P · France POWODZENIA R2EA/P · European Russia R3PLN/P · European Russia SP0YAGI · Poland DO7TTR/P · Fed. Rep. of Germany

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.

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	HF50HK S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-22 22:48	80m	+7 / -	<...>	+16 / -	2	✓ Closing fragment
08-22 22:34	80m	+13 / -	<...>	-5 / -	5	✓ Closing fragment
08-22 22:31	80m	+15 / -	<...>	+12 / -	2	✓ Closing fragment
08-22 22:26	80m	+12 / -	<...>	-2 / -	4	✓ Closing fragment
08-22 22:18	80m	+5 / -	<...>	+7 / -	2	✓ Closing fragment
08-22 22:15	80m	+13 / -	<...>	-2 / -	2	✓ Closing fragment
08-22 21:53	80m	+9 / -	<...>	+11 / -	2	✓ Closing fragment
08-22 21:40	80m	+11 / -	<...>	- / -	6	✓ Closing fragment
08-22 21:13	80m	+10 / -	<...>	- / -	27	✓ Closing fragment
08-22 21:06	80m	+7 / -	<...>	-7 / -	2	✓ Closing fragment
08-22 20:52	80m	+11 / -	<...>	-1 / -	2	✓ Closing fragment
08-22 20:47	80m	+8 / -	<...>	- / -	2	✓ Closing fragment
08-22 20:30	80m	- / -	II7MGBA	-3 / -	2	✓ Closing fragment
08-22 20:29	80m	- / +10	SP9MRP	+4 / -	2	Partial capture
08-22 20:29	80m	+11 / -	<...>	+3 / -	6	✓ Closing fragment
08-22 20:21	80m	+6 / -	<...>	- / -	2	Partial capture
08-22 20:11	80m	+3 / -	<...>	+4 / -	7	✓ Closing fragment
08-22 20:07	80m	- / -5	DL2AMM	+6 / -	3	Partial capture
08-22 20:06	80m	+11 / -	<...>	+6 / -	5	✓ Closing fragment
08-22 20:04	80m	+10 / -	<...>	-7 / -	2	✓ Closing fragment
08-22 20:00	80m	+6 / -	<...>	- / -	2	✓ Closing fragment
08-22 19:51	80m	+12 / -	EN35UKR	- / -	3	✓ Closing fragment
08-20 21:31	160m	+4 / -	<...>	-3 / -	12	✓ Closing fragment
08-20 21:10	80m	+12 / -	OZ/KD0NDU	+2 / -	3	✓ Closing observed
08-20 21:03	80m	+12 / -	OZ/KD0NDU	0 / -	6	✓ Closing observed
08-20 20:44	40m	- / -	<...>	-9 / -	5	✓ Closing fragment
08-20 20:26	40m	-12 / -	SP0YAGI	+13 / -	2	✓ Closing observed
08-20 20:20	40m	-6 / -	<...>	-13 / -	2	✓ Closing fragment
08-20 20:15	40m	-11 / -	<...>	- / -	3	✓ Closing fragment
08-20 20:02	40m	-13 / -	<...>	-13 / -	2	✓ Closing fragment
08-03 19:32	80m	+4 / -	<...>	0 / -	6	✓ Closing fragment
08-03 19:26	80m	+8 / -	<...>	+6 / -	6	✓ Closing fragment
08-03 19:23	80m	+8 / -	<...>	-14 / -	2	✓ Closing fragment
08-03 19:16	80m	+10 / -	<...>	+9 / -	2	✓ Closing fragment
07-25 18:01	20m	- / -12	DK5ZU	-9 / -	3	Partial capture
07-25 17:38	20m	- / -	<...>	-2 / -	2	✓ Closing fragment
07-09 19:47	40m	-23 / -	<...>	-14 / -	2	✓ Closing fragment
07-09 19:44	40m	-22 / -	<...>	-14 / -	2	✓ Closing fragment
07-09 08:04	20m	- / -	<...>	-12 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
223700 +13 1691  <...> HF50HK RR73
223715  -5 1690  HF50HK <...> 73
224130 +14 1691  CQ HF50HK
224245  -5 2021  HF50HK <...> 73
224330 +12 1691  CQ HF50HK (x9)
224830  +7 1691  <...> HF50HK RR73
224845 +16  454  HF50HK <...> 73

160m

UTC    dB Audio  Message
213045  +8 1110  CQ HF50HK
213145  +6 1110  <...> HF50HK RR73
213245 -10 1110  CQ HF50HK
213330 -17 2168  <HF50HK> OM1AN JN88
213330  +8  523  HF50HK <...> RR73
213345  +0 1110  <...> HF50HK 73 (x2)
213500 -13 1645  HF50HK <...> 73
213515  -1 1110  <...> HF50HK (x2)
213730  -9 2676  HF50HK <...> RR73
213745  +5 1110  <...> HF50HK 73 (x2)
213930  +3  714  HF50HK <...> RRR
213945  +5 1110  <...> HF50HK 73

40m

UTC    dB Audio  Message
202100 -13 1497  HF50HK <...> 73
202115  -6 1497  CQ HF50HK
202315 -14 1496  <...> HF50HK RR73
202330  -3 1808  HF50HK F8KIC/P 73
202545 -19 1496  CQ HF50HK
202645 -12 1497  SP0YAGI HF50HK RR73
202700 +13 1497  HF50HK SP0YAGI 73
204200  -8 2160  HF50HK <...> 73 (x8)

20m

UTC    dB Audio  Message
180215 -15  737  HF50HK DK5ZU -12
052115  -1 2190  HF50HK <...> 73 (x14)

10m

UTC    dB Audio  Message
172330 -13 1563  HF50HK <...> 73

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.

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