HF1Z — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: JO73

Receiver-side FT8 activity involving HF1Z, decoded by SO8OO in southeastern Poland. 316 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, across 5 UTC dates in the available aggregate history. Observed between 2026-09-21 and 2026-10-03.

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 316 FT8 messages attributed to HF1Z as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (71%), followed by 80 m (19%) and 40 m (10%). Most decodes (80%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (91%); the estimated median was -2 dB.

Overview

316

Messages attributed

UTC dates decoded

Active 15-min windows

-2 dB

Estimated median S/N

Bands

80m · 61 60m · 224 40m · 31

First attributed message: 2026-09-21
Last attributed message: 2026-10-03 00:34 UTC

Observed FT8 message patterns

Attributed sample: 316 messages
Active dates: 5 UTC dates
Estimated median S/N: -2 dB
Estimated 10th-90th percentile: -8 to +8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 6, moderate (-15 to -9 dB) 24, strong (≥ -8 dB) 286.

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 HF1Z in decoded directed-looking exchanges:

F4HSB · France ×2 R2SN · European Russia ×2 DA1MO · Fed. Rep. of Germany ×2 DD4U · Fed. Rep. of Germany ×2 EC3A · Spain ×2 EA3NE · Spain EA5JLN · Spain EA7LIC · Spain EC1ALT · Spain F4HMI/P · France F5RAV · France G3WAG · England

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 HF1Z

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: JO73 · 157 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 613 km (approx.)
Last such locator decoded: 2026-10-03 00:34 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	HF1Z S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-03 00:34	80m	+11 / -	OH2BV	- / -	2	Partial capture
10-03 00:33	80m	+10 / -	VE1PZ	- / -	2	Partial capture
10-03 00:30	80m	+12 / -3	GM6URC	-14 / -11	5	✓ Full exchange observed
10-03 00:27	80m	+5 / -10	EC3A	-14 / -13	7	✓ Full exchange observed
10-03 00:26	80m	0 / +4	US8KA	+12 / +1	5	✓ Full exchange observed
10-03 00:24	80m	+4 / -12	UA2FFD	-18 / -11	7	✓ Full exchange observed
10-02 21:07	60m	-4 / -	VE1YX	- / -12	3	✓ Closing fragment
10-02 21:06	60m	-4 / -	PE5W	- / -5	3	✓ Closing fragment
10-02 21:04	60m	-5 / -	LA6OCA	- / -12	3	✓ Closing fragment
10-02 21:03	60m	-1 / +6	F4HDR	-2 / -1	4	✓ Full exchange observed
10-02 21:01	60m	-5 / -12	IU3ACL	-9 / -	3	Partial capture
10-02 21:00	60m	- / -	LY8O	0 / -	3	Partial capture
10-02 20:59	60m	-5 / -	IU2VUZ	-22 / -17	5	✓ Full exchange observed
10-02 20:58	60m	-5 / -	F4HDR	-5 / -	3	Partial capture
10-02 20:56	60m	-2 / -11	DG4BZ	-22 / -18	5	✓ Full exchange observed
10-02 20:53	60m	-6 / +7	F4HDR	-1 / -	4	Partial capture
10-02 20:52	60m	-3 / -4	IU3ACL	-3 / -	5	Partial capture
10-02 20:51	60m	-7 / -	OH5YZ	-14 / -	5	Partial capture
10-02 20:49	60m	-5 / 0	YO2MAX	+7 / +3	5	✓ Full exchange observed
10-02 20:47	60m	-9 / -1	G0OXO	-4 / -11	5	✓ Full exchange observed
10-02 20:46	60m	-5 / -	ER5DX	+2 / -4	4	✓ Closing observed
10-02 20:44	60m	0 / -10	EG1FAP	-8 / -10	5	✓ Full exchange observed
10-02 20:41	60m	-4 / -	DL8SBE	-24 / -13	4	✓ Closing observed
10-02 20:38	60m	-1 / -10	SM7IUN	-7 / -19	5	✓ Full exchange observed
10-02 20:36	60m	-4 / +4	F4HSB	-24 / -10	4	✓ Full exchange observed
10-02 20:35	60m	- / -3	ON7VZ	-10 / -	3	Partial capture
10-02 20:35	60m	-3 / -	SP8SN	-22 / +4	5	✓ Full exchange observed
10-02 20:33	60m	-12 / +9	DF1IH	+1 / -2	4	✓ Full exchange observed
10-02 20:31	60m	-6 / -3	DC6KI	-9 / -2	5	✓ Full exchange observed
10-02 20:28	60m	0 / -3	G3WGC	0 / -20	5	✓ Full exchange observed
10-02 20:28	60m	-3 / -8	ON7VZ	-8 / -	6	Partial capture
10-02 20:27	60m	-2 / -4	M0MNV	-12 / -19	5	✓ Full exchange observed
10-02 20:26	60m	0 / -1	DF1IH	+9 / -	2	Partial capture
10-02 20:25	60m	0 / -10	TA3GO	-9 / -2	5	✓ Full exchange observed
10-02 20:23	60m	-4 / -8	ON7VZ	-1 / -	3	Partial capture
10-02 20:21	60m	-6 / -	IW2FUT	-12 / -7	4	✓ Closing observed
10-02 20:20	60m	- / -4	EG1FAP	-10 / -	2	Partial capture
10-02 20:19	60m	-2 / -1	G4ZFJ	0 / -5	5	✓ Full exchange observed
10-02 20:18	60m	-2 / +7	DK1CE	+10 / +1	5	✓ Full exchange observed
10-02 20:16	60m	-4 / +2	IU4PTA	-6 / -	3	Partial capture
10-02 20:14	60m	-6 / -	OK2YN	- / -1	3	✓ Closing fragment
10-02 20:13	60m	0 / -	OZ5AGJ	- / -1	2	✓ Closing fragment
10-02 20:07	60m	-2 / -	4Z5KU	- / -17	3	✓ Closing fragment
10-02 20:07	60m	- / -5	EG1FAP	-10 / -	3	Partial capture
10-02 20:06	60m	-1 / -	HA3PV	- / +1	3	✓ Closing fragment
10-02 20:03	60m	0 / -	OH3MB	-2 / +1	5	✓ Full exchange observed
10-02 20:02	60m	-7 / +3	DJ1NE	0 / 0	5	✓ Full exchange observed
10-02 20:00	60m	0 / +5	IZ4JMA	-18 / -12	5	✓ Full exchange observed
10-02 19:58	60m	0 / +2	DA1MO	+10 / +3	6	✓ Full exchange observed
10-02 19:57	60m	-6 / -	OH3MB	0 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
002915 -14 1226  HF1Z EC3A -08
002930  +8 1603  EC3A HF1Z R-13
002945 -12 1226  HF1Z EC3A RR73
003000  +4 1603  EC3A HF1Z 73
003045 -13 1694  HF1Z GM6URC -03
003100  +2 1603  ON1JP HF1Z 73
003115 -16 1693  HF1Z GM6URC -03
003130  +5 1603  GM6URC HF1Z R-11
003145 -14 1693  HF1Z GM6URC RR73
003200 +18 1603  GM6URC HF1Z 73
003230 +11 1603  DO8JB HF1Z -02
003300 +11 1603  VE1PZ HF1Z JO73 (x2)
003400 +11 1603  OH2BV HF1Z JO73 (x2)

60m

UTC    dB Audio  Message
210215  -4 1532  PC9K HF1Z JO73
210245  -8 1531  HF1Z IU3ACL -12
210330  -1 2622  HF1Z F4HDR +06
210345  -2 1532  F4HDR HF1Z R-01
210400  -2 2621  HF1Z F4HDR RR73
210415  +0 1532  F4HDR HF1Z 73
210445  -9 1532  LA6OCA HF1Z JO73 (x3)
210615  -4 1532  PE5W HF1Z JO73 (x3)
210745  +1 1532  VE1YX HF1Z JO73 (x3)

40m

UTC    dB Audio  Message
200615 -18 2273  HF1Z M7YBB RRR
202900 -21 1754  HF1Z RC8SAB LO71 (x3)
203745  -6 2373  HF1Z DL8CA +03 (x4)
204330 -17  792  HF1Z UX5UW -08
204700  -5 1537  HF1Z F5MXH JN07
210330  -3 1433  HF1Z GW0ARK +00 (x2)
211245 -19 1535  HF1Z F5RAV +15 (x2)
183230  -6 1436  ON4AEO HF1Z JO73

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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