HF85MK — 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: Poland

Receiver-side FT8 activity involving HF85MK, decoded by SO8OO in southeastern Poland. 215 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-08-12 and 2026-08-16.

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 215 FT8 messages attributed to HF85MK as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (77%), followed by 40 m (13%) and 20 m (10%). Several six-hour UTC windows tied for the largest share (94%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (76%); the estimated median was +6 dB.

Overview

215

Messages attributed

UTC dates decoded

Active 15-min windows

+6 dB

Estimated median S/N

Bands

80m · 165 40m · 29 20m · 21

First attributed message: 2026-08-12
Last attributed message: 2026-08-16 22:09 UTC

Observed FT8 message patterns

Attributed sample: 215 messages
Active dates: 3 UTC dates
Estimated median S/N: +6 dB
Estimated 10th-90th percentile: -18 to +13 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 34, moderate (-15 to -9 dB) 17, strong (≥ -8 dB) 164.

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 HF85MK in decoded directed-looking exchanges:

UW5KW/QRP · Ukraine ×5 EN35UKR · Ukraine ×4 9A4BP/P · Croatia ×2 D09AND/P · Fed. Rep. of Germany ×2 HG25CCS · Hungary ×2 OL900CO · Czech Republic ×2 DL1CBS/P · Fed. Rep. of Germany GB64MOD · Wales IU4BJC · Italy LA/DL3YDX · Norway EI3KYB/P · Ireland UB6OGX/3 · European Russia

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	HF85MK S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-16 21:43	40m	-15 / -	EI3KYB/P	-12 / -	2	✓ Closing observed
08-16 21:36	80m	- / 0	DO5PY	-14 / -	4	✓ Closing fragment
08-16 21:35	80m	+8 / -	<...>	- / -	2	✓ Closing fragment
08-16 21:32	80m	+4 / -	<...>	-23 / -	2	✓ Closing fragment
08-16 21:24	80m	0 / -	<...>	-18 / -	7	✓ Closing fragment
08-16 21:18	80m	0 / -	<...>	-23 / -	2	✓ Closing fragment
08-16 21:11	80m	+8 / -	<...>	-22 / -	6	✓ Closing fragment
08-16 21:06	80m	+6 / -15	UA4FKT	-6 / +3	3	Partial capture
08-16 21:05	80m	+6 / -	<...>	-5 / -	7	✓ Closing fragment
08-16 20:59	40m	- / -	SP1LJZ	-23 / -	3	Partial capture
08-16 20:59	40m	- / -	UB6OCP	-17 / -	3	Partial capture
08-16 20:58	40m	-16 / -	<...>	-14 / -	2	✓ Closing fragment
08-16 20:48	40m	- / -	UB6OCP	-17 / -	3	Partial capture
08-16 20:46	40m	-16 / -	<...>	-8 / -	3	✓ Closing fragment
08-16 20:46	40m	- / -	EA1NPP	+7 / -	3	Partial capture
08-13 22:18	80m	+15 / -	D09AND/P	-16 / -	3	✓ Closing observed
08-13 21:26	80m	- / -	DO9BAU	+4 / -	4	Partial capture
08-13 21:25	80m	+14 / -	<...>	+6 / -	2	✓ Closing fragment
08-13 21:18	80m	- / -	SP2GRP	+10 / -	4	Partial capture
08-13 21:13	80m	- / -	DO9BAU	+8 / -	5	Partial capture
08-13 21:12	80m	+15 / -	UW5KW/QRP	+12 / -	4	✓ Closing observed
08-13 21:07	80m	+4 / -	UW5KW/QRP	+13 / -	2	✓ Closing observed
08-13 21:04	80m	- / -	DO9BAU	+15 / -	4	Partial capture
08-13 21:02	80m	+10 / -	UW5KW/QRP	-2 / -	4	✓ Closing observed
08-13 20:54	80m	+9 / -	UW5KW/QRP	-3 / -	3	✓ Closing observed
08-13 20:34	80m	+3 / -	UW5KW/QRP	- / -	2	✓ Closing fragment
08-13 20:26	80m	+5 / -	EN35UKR	-5 / -	2	✓ Closing observed
08-13 20:23	80m	- / -	DO9BAU	+3 / -	4	Partial capture
08-13 20:14	80m	- / -	DK1GP	-8 / -	3	Partial capture
08-13 20:14	80m	+13 / -	EN35UKR	+4 / -	10	✓ Closing observed
08-12 21:27	80m	- / -	IK6GTF	+6 / -	5	Partial capture
08-12 21:27	80m	- / -	YO4LUP	-2 / -	2	Partial capture
08-12 21:24	80m	+8 / -	<...>	+6 / -	16	✓ Closing fragment
08-12 21:14	80m	- / -	DO1SWC	-7 / -	4	Partial capture
08-12 21:14	80m	- / -	G8OO	-7 / -	4	Partial capture
08-12 21:14	80m	+9 / -	<...>	+11 / -	2	✓ Closing fragment
08-12 21:06	80m	- / -	DO1SWC	-5 / -	4	Partial capture
08-12 21:06	80m	- / -	YO4LUP	-1 / -	3	Partial capture
08-12 21:06	80m	+10 / -	<...>	0 / -	3	✓ Closing fragment
08-12 21:04	80m	+9 / -	<...>	+19 / -	2	✓ Closing fragment
08-12 20:40	20m	- / -	DK2HM	-15 / -	4	Partial capture
08-12 09:56	20m	- / -	9A5WA	0 / -	4	Partial capture
08-12 07:52	20m	- / -	<...>	-8 / -	2	✓ Closing fragment
08-12 06:16	20m	-14 / -	<...>	-11 / -	3	✓ Closing fragment
08-12 06:03	20m	- / -	I1RJP	-4 / -	4	Partial capture
08-12 05:44	20m	- / -	I1RJP	-6 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
204115 -13 1930  HF85MK DK2HM JN58 (x2)
221630 -11 1344  HF85MK <...> 73 (x2)
193200  -5 1629  HF85MK GB64MOD 73
220215 -13 1400  CQ HF85MK
220315 -18 1400  <...> HF85MK 73
220345 -16 1400  CQ HF85MK
220615 -12 1400  <...> HF85MK 73
220645 -16 1400  CQ HF85MK (x6)

40m

UTC    dB Audio  Message
210000 -24 1919  HF85MK SP1LJZ JO84
210015 -17 1361  CQ HF85MK
210030 -16 2040  HF85MK UB6OCP KN88
210045 -17 1361  CQ HF85MK (x4)
214315 -15 1361  EI3KYB/P HF85MK RR73
214330 -12 1361  HF85MK EI3KYB/P 73
214415 -12 1361  CQ HF85MK (x6)

80m

UTC    dB Audio  Message
213315  +6 1326  CQ HF85MK (x4)
213545  +9 1326  <...> HF85MK RR73
213600 -19 1237  <HF85MK> DO5PY JN49
213600 -20 1658  HF85MK 9A4BP/P 73
213630 -18 1237  HF85MK DO5PY R+00
213645  +6 1326  <...> HF85MK RR73
213700 -11 1237  HF85MK DO5PY 73
213715  +4 1326  CQ HF85MK
213730  -8 1237  HF85MK DO5PY JN49
213745 +10 1326  CQ HF85MK (x3)

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

CW history is temporarily unavailable.

Explore CW reception at SO8OO

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