IZ4OSH — 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: Italy Most frequent locator attributed to this token: JN54

Receiver-side FT8 activity involving IZ4OSH, decoded by SO8OO in southeastern Poland. 70 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 15 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-11-06.

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 70 FT8 messages attributed to IZ4OSH as the transmitting token by decoded message structure across 15 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (44%), followed by 20 m (41%) and 40 m (14%). The busiest six-hour window was 06:00-12:00 UTC, containing 39% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-8 dB

Estimated median S/N

Bands

40m · 10 20m · 29 10m · 31

First attributed message: 2026-06-07
Last attributed message: 2026-11-06 18:59 UTC

Observed FT8 message patterns

Attributed sample: 70 messages
Active dates: 15 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -19 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 14, moderate (-15 to -9 dB) 18, strong (≥ -8 dB) 38.

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 IZ4OSH in decoded directed-looking exchanges:

BA3NZ · China DG9ZL · Fed. Rep. of Germany DH5IS · Fed. Rep. of Germany F4GUK · France G0RVY · England OH3MB · Finland R2SL · 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.

Most frequent locator attributed to IZ4OSH

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: JN54 · 44 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,013 km (approx.)
Last such locator decoded: 2026-11-06 18:58 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	IZ4OSH S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-06 18:55	40m	- / 0	G0RVY	+2 / -	3	✓ Closing fragment
10-27 23:36	40m	- / -4	R2SL	+16 / -	2	✓ Closing fragment
10-16 15:38	40m	-16 / -4	F4GUK	-1 / -2	4	✓ Full exchange observed
10-16 15:36	40m	-15 / +1	OH3MB	+1 / -	4	✓ Closing observed
10-16 15:34	40m	- / -	DM4ST	-10 / -	2	Partial capture
10-16 15:33	40m	-13 / -1	DH5IS	-18 / -8	5	✓ Full exchange observed
08-21 08:57	20m	-18 / -	VK6DU	- / -	2	Partial capture
08-20 14:51	20m	-2 / -	BA3NZ	- / -15	4	✓ Closing fragment
08-18 11:40	20m	-10 / -	JH2KVP	- / -	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
153730  +1 1929  IZ4OSH OH3MB 73
153745 -19 1931  CQ IZ4OSH JN54
153800 -18 1930  IZ4OSH R5AV -13
153815 -15 1931  CQ IZ4OSH JN54
153830  -2 2766  IZ4OSH F4GUK JN18
153845 -16 1931  F4GUK IZ4OSH -02
153900  +0 2766  IZ4OSH F4GUK R-04 (x2)
233615 +14 2758  IZ4OSH R2SL -04 (x2)
185515  -1  679  IZ4OSH G0RVY JO01 (x3)
185830 -24 2160  CQ IZ4OSH JN54
185900 -21 2160  M0PFX IZ4OSH -17

20m

UTC    dB Audio  Message
114000 -12 1146  JH2KVP IZ4OSH JN54 (x2)
145115  -7 2228  BA3NZ IZ4OSH JN54 (x4)
161100  -7 1210  CQ IZ4OSH JN54
085730 -19 1946  VK6DU IZ4OSH JN54 (x2)

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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