HK4ZZ — 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: Colombia Most frequent locator attributed to this token: FJ26

Receiver-side FT8 activity involving HK4ZZ, decoded by SO8OO in southeastern Poland. 111 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 13 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-09-09.

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 111 FT8 messages attributed to HK4ZZ as the transmitting token by decoded message structure across 13 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (69%), followed by 40 m (31%). 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 weak S/N range (84%); the estimated median was -19 dB.

Overview

111

Messages attributed

UTC dates decoded

Active 15-min windows

-19 dB

Estimated median S/N

Bands

40m · 34 20m · 77

First attributed message: 2026-06-08
Last attributed message: 2026-09-09 02:54 UTC

Observed FT8 message patterns

Attributed sample: 111 messages
Active dates: 13 UTC dates
Estimated median S/N: -19 dB
Estimated 10th-90th percentile: -24 to -13 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 93, moderate (-15 to -9 dB) 18, strong (≥ -8 dB) 0.

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 HK4ZZ in decoded directed-looking exchanges:

YL2EA · Latvia ×2 7Z1XX · Saudi Arabia CT3MD · Madeira Islands IZ7HNO · Italy N5URR · United States RW3PL · European Russia SP8AJK · Poland VE2AO · Canada WA4UVH · United States 4O7CC · Montenegro 9A3YV · Croatia DL2RPN · 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.

Most frequent locator attributed to HK4ZZ

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: FJ26 · 38 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 9,937 km (approx.)
Last such locator decoded: 2026-09-09 02:54 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	HK4ZZ S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-09 02:44	40m	- / -10	US1VM	-5 / -	3	Partial capture
09-09 02:44	40m	-19 / -12	RA6OY	-12 / -18	4	✓ Full exchange observed
09-09 02:31	40m	-16 / -	K5JZZ	- / -10	4	✓ Closing fragment
09-06 04:07	40m	- / -8	IN3LHF	-17 / -	2	Partial capture
09-06 03:40	40m	- / -18	4O7CC	-4 / -	4	✓ Closing fragment
09-06 03:31	40m	- / -1	HI8JCD	-16 / -	2	✓ Closing fragment
08-30 04:08	40m	-18 / -	TN8GD	- / -	8	Partial capture
08-29 04:35	20m	- / -	RC6OX	-1 / -	4	Partial capture
08-24 02:22	20m	-23 / -	RI1FJL	- / -	3	Partial capture
08-24 00:34	20m	-21 / -	VE2AO	- / -11	3	✓ Closing fragment
08-24 00:31	20m	- / -	VK6DW	-17 / -	3	Partial capture
08-24 00:30	20m	-23 / -	WA4UVH	- / -19	2	✓ Closing fragment
08-22 04:49	20m	- / -11	RW3PL	-11 / -	3	✓ Closing fragment
08-22 04:48	20m	- / -3	CT3MD	+8 / -	4	✓ Closing fragment
08-22 04:38	20m	- / -14	RU3UR	-3 / -	2	Partial capture
08-22 04:34	20m	- / -11	UB4CJS	0 / -	10	Partial capture
08-22 04:31	20m	- / -	DB3EH	-10 / -	6	Partial capture
08-21 03:47	40m	- / -15	MM0KQC	-14 / -	2	Partial capture
08-21 03:42	40m	-17 / -	F5MNW	-14 / -15	7	✓ Closing observed
08-21 03:40	40m	- / -7	9A3YV	+3 / -	7	✓ Closing fragment
08-21 03:11	40m	- / +2	RC6D	+10 / -	2	Partial capture
08-21 03:09	40m	-19 / -	YL2EA	- / -17	4	✓ Closing fragment
08-21 03:07	40m	- / -13	YO6LM	0 / -	2	Partial capture
08-21 03:03	40m	- / -13	MM0KQC	-16 / -	5	Partial capture
08-21 03:02	40m	- / -	EA5XA	-10 / -	4	Partial capture
08-21 03:01	40m	-20 / -14	UT7HX	-6 / -	4	✓ Closing observed
08-20 03:14	20m	- / -2	F1PBZ	+11 / -	3	Partial capture
08-15 04:37	20m	- / -	IZ3EAW	-10 / -	5	Partial capture
08-15 03:25	20m	- / -	7Z1XX	-17 / -	3	✓ Closing fragment
08-14 04:13	20m	- / -6	SP8AJK	-18 / -	2	✓ Closing fragment
08-14 04:10	20m	- / -	SP8AJK	-20 / -	3	Partial capture
08-12 03:17	20m	- / -21	F1PBZ	-2 / -	2	Partial capture
08-10 03:23	40m	- / -16	R2EC	-8 / -	2	Partial capture
08-10 03:16	40m	- / -	DK1AD	-5 / -	3	Partial capture
08-10 03:16	40m	- / -	R6OIZ	-10 / -	2	Partial capture
08-10 02:15	20m	- / -15	IW4AOT	-19 / -	4	Partial capture
08-09 04:42	40m	- / -18	ON3CCM	-13 / -	3	✓ Closing fragment
08-09 04:40	40m	- / -16	IK2TPX	-21 / -	4	Partial capture
08-09 04:39	40m	- / -13	DL3MIB	-10 / -	9	Partial capture
08-09 04:38	40m	- / -8	DL3OCF	-9 / -	5	Partial capture
08-09 04:29	40m	- / -17	YO2MNZ	+4 / -	4	✓ Closing fragment
08-09 04:22	40m	- / -16	DL2RPN	-16 / -	2	✓ Closing fragment
08-09 04:19	40m	- / -	DL2RPN	-10 / -	2	Partial capture
08-07 05:09	40m	- / -15	DK2MAX	-7 / -	2	Partial capture
08-07 04:39	40m	- / -	YO9IJP	0 / -	2	Partial capture
08-07 04:29	40m	- / -14	PA3BUD	-4 / -	9	✓ Closing fragment
08-05 02:11	20m	- / -	RW4M	-19 / -	3	Partial capture
07-26 04:08	20m	- / -	RA6OY	+4 / -	4	Partial capture
07-26 04:08	20m	- / -	RD6OZ	-18 / -	3	Partial capture
07-26 03:32	40m	- / -15	SP3IOE	-5 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
023615 -13 1540  EC5M HK4ZZ FJ26
024345 -17 1540  CQ HK4ZZ FJ26
024415 -17 1540  RA6OY HK4ZZ -18
024430  -4 2880  HK4ZZ US1VM -10
024430 -10  243  HK4ZZ RA6OY R-12
024430 -22 1541  HK4ZZ F4VTR JN25
024445 -21 1540  RA6OY HK4ZZ RR73
024500 -24 1541  HK4ZZ UX1VT KN68
024500  -7 2880  HK4ZZ US1VM -10 (x2)
024615 -19 1540  AA5GI HK4ZZ -12
024630 -15  243  HK4ZZ RA6OY R-12
025345 -20 1540  CQ HK4ZZ FJ26                         a1 (x2)
032700 -15 1532  HK4ZZ PD0PY JO22

20m

UTC    dB Audio  Message
003115 -22 1578  WA4UVH HK4ZZ RR73
003130 -18 2210  HK4ZZ VK6DW OF88 (x2)
003415 -20 1578  VE2AO HK4ZZ -11 (x3)
003645 -23 1579  N5URR HK4ZZ 73
003745 -22 1579  N4ZXZ HK4ZZ R-16
022245 -24 1581  RI1FJL HK4ZZ FJ26 (x3)
043530  +2 1580  HK4ZZ RC6OX KN88 (x4)

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.

Explore CW reception at SO8OO

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