7M4HOA — 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: Japan Most frequent locator attributed to this token: PM95

Receiver-side FT8 activity involving 7M4HOA, decoded by SO8OO in southeastern Poland. 6 FT8 messages attributed to this token as transmitter, on 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-06-19 and 2026-08-31.

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 6 FT8 messages attributed to 7M4HOA as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was -11 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-11 dB

Estimated median S/N

Bands

20m · 6

First attributed message: 2026-06-19
Last attributed message: 2026-08-31 14:46 UTC

Observed FT8 message patterns

Attributed sample: 6 messages
Active dates: 3 UTC dates
Estimated median S/N: -11 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 4, strong (≥ -8 dB) 1.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with 7M4HOA in decoded directed-looking exchanges:

4L7T · Georgia DL3MIB · Fed. Rep. of Germany 4X1UF · Israel LY7M · Lithuania OH1MLZ · Finland OH2XX · Finland OH3NAQ · Finland OH5BM · Finland UA4FKT · European Russia

Most frequent locator attributed to 7M4HOA

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: PM95 · 4 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,693 km (approx.)
Last such locator decoded: 2026-08-31 14:46 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	7M4HOA S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-19 21:21	40m	- / -	DB3EH	-19 / -	5	Partial capture
10-19 21:10	40m	- / -16	F1DJY	+10 / -	2	Partial capture
10-19 21:09	40m	- / -25	DL3MIB	-6 / -	7	✓ Closing fragment
10-10 15:23	80m	- / -15	UT5ZC	+5 / -	6	Partial capture
10-03 21:06	80m	- / -21	IK0PHY	+8 / -	2	Partial capture
10-03 20:49	80m	- / -24	UX1AA	+1 / -	6	Partial capture
10-02 15:24	80m	- / -	OH2BGD	-6 / -	2	Partial capture
10-02 15:21	80m	- / -5	OH1MLZ	-5 / -	4	✓ Closing fragment
10-02 14:58	80m	- / -17	UA4FKT	-3 / -	2	✓ Closing fragment
09-29 15:58	80m	- / -11	OH5BM	+2 / -	2	✓ Closing fragment
09-18 16:22	80m	- / -6	4X1UF	-20 / -	4	✓ Closing fragment
09-18 16:10	80m	- / -13	OH2XX	-10 / -	3	✓ Closing fragment
08-27 15:06	20m	-6 / -8	4L7T	-7 / -	3	✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
211000 +11  665  7M4HOA F1DJY -16
211000  -5 1070  7M4HOA DL3MIB JN57
211030 +10  665  7M4HOA F1DJY -16
211030  -7 1070  7M4HOA DL3MIB JN57 (x5)
212130 -17 2043  7M4HOA DB3EH JO42 (x5)
213545 -18 2284  7M4HOA TF4M -06
214300  +5 1029  7M4HOA IW9HPG JM78

80m

UTC    dB Audio  Message
152500  -8 2485  7M4HOA OH2BGD KP20
204930  -1 2547  7M4HOA UX1AA -24 (x6)
210630  +6 2104  7M4HOA IK0PHY R-21 (x2)
152345 +10  616  7M4HOA UT5ZC -15 (x6)

20m

UTC    dB Audio  Message
150645  -6 2785  7M4HOA 4L7T -08 (x2)
150730  -6 2852  4L7T 7M4HOA 73
144400 -11 2769  <AO90A> 7M4HOA PM95
144600 -17 2725  OH0/ES2TT 7M4HOA PM95

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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