R2FDS — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Kaliningrad Most frequent locator attributed to this token: KO04

Receiver-side FT8 activity involving R2FDS, decoded by SO8OO in southeastern Poland. 131 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 9 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-07-17.

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 131 FT8 messages attributed to R2FDS as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (59%), followed by 20 m (21%) and 80 m (20%). Most decodes (65%) fell within the six-hour window 13:00-19:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

131

Messages attributed

UTC dates decoded

Active 15-min windows

-8 dB

Estimated median S/N

Bands

80m · 26 40m · 77 20m · 27 10m · 1

First attributed message: 2026-06-06
Last attributed message: 2026-07-17 06:30 UTC

Observed FT8 message patterns

Attributed sample: 131 messages
Active dates: 9 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -15 to +1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 13, moderate (-15 to -9 dB) 43, strong (≥ -8 dB) 75.

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 R2FDS in decoded directed-looking exchanges:

R5KH · European Russia DB8APG · Fed. Rep. of Germany DK1FL · Fed. Rep. of Germany LZ1ZF · Bulgaria LZ2INP · Bulgaria PA3EVY · Netherlands PD3LKN · Netherlands R1YY · European Russia R2BQM · European Russia R50RKZ · European Russia UA3GDJ · European Russia UA3RAU · European Russia

Most frequent locator attributed to R2FDS

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: KO04 · 71 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 510 km (approx.)
Last such locator decoded: 2026-07-17 06:30 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	R2FDS S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-14 07:19	20m	- / -2	UA3GDJ	0 / -	3	✓ Closing fragment
07-31 07:36	20m	- / -4	R2BQM	-7 / -	5	✓ Closing fragment
07-30 07:48	20m	- / -4	MI0NWA	-7 / -	3	Partial capture
07-29 07:44	20m	- / -	F4HSB	-17 / -	2	Partial capture
07-29 07:39	20m	- / -15	DB8APG	-18 / -	3	✓ Closing fragment
07-29 07:39	20m	- / -6	UA3RAU	-10 / -	2	✓ Closing fragment
07-29 07:32	20m	- / -13	DK1FL	-15 / -	7	✓ Closing fragment
07-29 07:28	20m	- / -	R4ML	0 / -	2	Partial capture
07-27 08:57	20m	- / 0	LZ1ZF	-16 / -	2	✓ Closing fragment
07-27 08:52	20m	- / -6	F1ODM	-7 / -	4	Partial capture
07-27 08:46	20m	- / -18	PD3LKN	-11 / -	4	✓ Closing fragment
07-17 07:04	20m	- / -15	IK4TVP	-7 / -	4	Partial capture
07-17 07:01	20m	- / -	IK4LZH	-7 / -	3	Partial capture
07-17 07:01	20m	- / -6	PA3EVY	+4 / -	6	✓ Closing fragment
07-17 06:37	40m	- / -	DL2AXA	-17 / -	5	✓ Closing fragment
07-17 06:33	40m	- / -12	DK3GI	-10 / -	3	✓ Closing fragment
07-16 13:45	20m	- / -19	RA4UEU	-14 / -	3	Partial capture
07-16 13:03	20m	- / -	DL1R	-6 / -	2	Partial capture
07-09 20:44	40m	- / -	DK6MR	-4 / -	2	Partial capture
07-09 20:39	40m	- / -	DK6MR	-10 / -	2	Partial capture
07-09 20:32	40m	- / -8	R3YAU	-10 / -	2	✓ Closing fragment
07-09 20:31	40m	- / -5	YO4NF	-3 / -	2	✓ Closing fragment
06-25 09:12	10m	- / -18	R5KH	-10 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
082130 -22 1980  R2FDS UA3SNB -14
082715  -4 2076  R2FDS UB6LTL +04
074800  -5  410  R2FDS MI0NWA -04 (x3)
073615  -1 2480  R2FDS R2BQM -04 (x5)
071945 -17 2354  R2FDS R1YY 73
071930  -4  568  R2FDS UA3GDJ KO92 (x3)
072630  -7 2071  R2FDS R50RKZ RR73

40m

UTC    dB Audio  Message
203430 -20 1392  CQ R2FDS KO04
203945  -8  583  R2FDS DK6MR JO30 (x4)
063030 -20 1212  CQ R2FDS KO04
063315 -13  966  R2FDS DK3GI JN59 (x3)
063745 -16 2302  R2FDS DL2AXA JO50 (x5)
075915 -16 1465  R2FDS DK7UY JO44

10m

UTC    dB Audio  Message
091230 -12 1509  R2FDS R5KH -18 (x2)
082600 -23 1742  R2FDS F5SJF R-10

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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