F4HZA — 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: France Most frequent locator attributed to this token: JN18

Receiver-side FT8 activity involving F4HZA, decoded by SO8OO in southeastern Poland. 110 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 11 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-17.

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 110 FT8 messages attributed to F4HZA as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (75%), followed by 40 m (16%) and 80 m (9%). Most decodes (52%) fell within the six-hour window 10:00-16:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7 dB.

Overview

110

Messages attributed

UTC dates decoded

Active 15-min windows

-7 dB

Estimated median S/N

Bands

80m · 10 40m · 18 20m · 82

First attributed message: 2026-06-06
Last attributed message: 2026-10-17 20:11 UTC

Observed FT8 message patterns

Attributed sample: 110 messages
Active dates: 11 UTC dates
Estimated median S/N: -7 dB
Estimated 10th-90th percentile: -18 to +6 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 16, moderate (-15 to -9 dB) 33, strong (≥ -8 dB) 61.

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 F4HZA in decoded directed-looking exchanges:

KC8QDQ · United States OE5WRO · Austria SP2LNY · Poland CR7BRV · Portugal KY4WI · United States PV8AJ · Brazil DO7MEW · Fed. Rep. of Germany G4UJS · England PA0MUS · Netherlands

Most frequent locator attributed to F4HZA

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: JN18 · 68 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,370 km (approx.)
Last such locator decoded: 2026-10-17 20:11 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	F4HZA S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-17 20:10	80m	-22 / -	YO9BPX	- / -	4	Partial capture
10-17 20:06	80m	- / -9	DO7MEW	-10 / -	3	✓ Closing fragment
10-17 20:03	80m	- / -21	G4UJS	-10 / -	4	✓ Closing fragment
10-17 20:02	80m	-18 / -4	PA0MUS	+4 / -7	4	✓ Full exchange observed
09-09 20:48	40m	- / -6	RC9WC	-16 / -	3	Partial capture
09-09 20:47	40m	+4 / -	CR7BRV	- / -	2	✓ Closing fragment
09-09 20:41	40m	+6 / +2	DR800WE	+9 / -4	3	Partial capture
09-06 07:36	40m	-13 / -	CT2FFC	- / -12	2	Partial capture
09-06 07:34	40m	-13 / -	HK4SAN	- / -	3	Partial capture
09-06 07:27	40m	-15 / -	N0BUZ	- / -	4	Partial capture
09-06 07:23	40m	-14 / -	PV8AJ	- / -	2	✓ Closing fragment
08-02 13:12	20m	-3 / -	OE5WRO	- / -5	5	✓ Closing fragment
08-02 13:11	20m	-6 / -	SP2LNY	- / -	2	✓ Closing fragment
08-02 13:07	20m	-7 / -	KC8QDQ	- / -18	2	✓ Closing fragment
08-02 13:03	20m	-5 / -	HI8ML	- / -	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
200230 -14 1845  F4HZA DO7MEW JO42
200245 -18 1846  PA0MUS F4HZA -07
200300  +4 2788  F4HZA PA0MUS R-04
200300 -11 1847  F4HZA G4UJS -21
200330  +4 2788  F4HZA PA0MUS 73
200330 -11 1846  F4HZA G4UJS -04 (x3)
200630 -10 1847  F4HZA DO7MEW JO42 (x3)
201000 -23 1846  YO9BPX F4HZA JN18 (x4)

40m

UTC    dB Audio  Message
072845 -16 2057  N0BUZ F4HZA JN18
073245 -14 1047  N1WI F4HZA JN18
073415 -14 1047  HK4SAN F4HZA JN18 (x3)
073645 -14 1047  CT2FFC F4HZA JN18 (x2)
204130  +7 2291  DR800WE F4HZA JN18
204145  +9 2294  F4HZA DR800WE +02
204200  +6 2291  DR800WE F4HZA R-04
204700  +3 2292  CR7BRV F4HZA JN18 (x2)
204815 -17 1783  F4HZA RC9WC -06 (x3)

20m

UTC    dB Audio  Message
130545  -9 2101  CQ F4HZA JN18                         a1 (x3)
130745  -6 2101  KC8QDQ F4HZA -18 (x2)
130915  -5 2101  CQ F4HZA JN18 (x3)
131115  -3 2101  SP2LNY F4HZA +12 (x2)
131245  -3 2101  OE5WRO F4HZA -05 (x5)

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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