IS0FRV — 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: Sardinia Most frequent locator attributed to this token: JM49

Receiver-side FT8 activity involving IS0FRV, decoded by SO8OO in southeastern Poland. 46 FT8 messages attributed to this token as transmitter, on 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-08-07 and 2026-08-22.

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 46 FT8 messages attributed to IS0FRV as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Several six-hour UTC windows tied for the largest share (91%), so no unique busiest interval is claimed. 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

20m · 46

First attributed message: 2026-08-07
Last attributed message: 2026-08-22 17:34 UTC

Observed FT8 message patterns

Attributed sample: 46 messages
Active dates: 5 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -15 to +4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 16, strong (≥ -8 dB) 26.

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 IS0FRV in decoded directed-looking exchanges:

7K1CPT · Japan BH8PSM · China K0BFG · United States M7XEI · England SP6FME · Poland TT1GD · Chad

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 IS0FRV

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: JM49
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,535 km (approx.)
Last such locator decoded: 2026-08-07 17:29 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	IS0FRV S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-22 17:35	20m	- / -	IU5HIU	-4 / -	9	Partial capture
08-22 17:33	20m	+9 / -	BH8PSM	- / -12	3	✓ Closing fragment
08-22 17:15	20m	0 / -18	7K1CPT	-4 / -	3	✓ Closing observed
08-13 20:24	20m	-11 / -	N1SK	- / -15	3	Partial capture
08-13 20:23	20m	+2 / -	NE8Z	- / -7	3	Partial capture
08-13 20:21	20m	-10 / -	KC1QYX	- / -13	4	Partial capture
08-13 20:18	20m	0 / -	BU2FW	- / -12	2	Partial capture
08-13 20:17	20m	+5 / -	M7XEI	- / -	2	✓ Closing fragment
08-13 20:12	20m	-2 / -	K0BFG	- / -17	4	✓ Closing fragment
08-13 20:10	20m	-10 / -	N2FBV	- / -18	2	Partial capture
08-10 09:50	20m	-7 / -	TT1GD	- / -10	3	✓ Closing fragment
08-09 16:48	20m	-10 / -	SP6FME	- / -	2	✓ Closing fragment
08-09 16:45	20m	-2 / -	RO6OT	-14 / +10	5	Partial capture
08-09 16:42	20m	-11 / -	BD8ELZ	- / -8	3	Partial capture
08-09 16:33	20m	-14 / -	YB7AAE	- / -12	3	Partial capture
08-09 16:31	20m	-15 / -	BH2WTV	- / -2	2	Partial capture
08-07 17:29	20m	- / -11	F1ODM	-10 / -	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
153345  -2  388  IS0FRV DL3BQV JO52

20m

UTC    dB Audio  Message
171700  -4 2726  IS0FRV 7K1CPT 73
171715  +0 2722  7K1CPT IS0FRV 73
171815  -8 1765  EX7CQ IS0FRV -09
173345 +10 2416  BH8PSM IS0FRV R-12 (x3)
173500  -5  277  IS0FRV IU5HIU JN53 (x9)

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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