RD9FC — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: LO76

Receiver-side FT8 activity involving RD9FC, decoded by SO8OO in southeastern Poland. 399 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 57 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-10-06.

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 399 FT8 messages attributed to RD9FC as the transmitting token by decoded message structure across 57 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (67%), followed by 20 m (17%) and 40 m (14%). Most decodes (72%) fell within the six-hour window 14:00-20:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.

Overview

399

Messages attributed

UTC dates decoded

128

Active 15-min windows

-13 dB

Estimated median S/N

Bands

80m · 268 40m · 55 20m · 68 10m · 8

First attributed message: 2026-06-08
Last attributed message: 2026-10-06 16:27 UTC

Observed FT8 message patterns

Attributed sample: 399 messages
Active dates: 57 UTC dates
Estimated median S/N: -13 dB
Estimated 10th-90th percentile: -20 to -4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 122, moderate (-15 to -9 dB) 177, strong (≥ -8 dB) 100.

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 RD9FC in decoded directed-looking exchanges:

DL3MIB · Fed. Rep. of Germany ×2 HB9EFK · Switzerland ×2 RA3ZGT · European Russia ×2 R50RKZ · European Russia ×2 UG4L · European Russia ×2 HG0NPJ · Hungary ×2 Z62NS · Republic of Kosovo ×2 PV8AJ · Brazil ×2 R8LCI · Asiatic Russia ×2 RU1AB · European Russia ×2 S59A · Slovenia ×2 UB0SMX/P · Asiatic Russia ×2

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 RD9FC

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: LO76 · 22 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,302 km (approx.)
Last such locator decoded: 2026-10-06 16:27 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	RD9FC S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-06 16:46	160m	- / -15	UG4L	-19 / -	2	✓ Closing fragment
10-06 16:26	80m	-16 / -	R9MBC	- / -20	2	✓ Closing fragment
10-06 16:23	80m	-15 / -6	YL2GJX	+2 / -15	7	✓ Full exchange observed
10-06 16:23	80m	-12 / 0	LZ1GC	+5 / -	3	✓ Closing observed
10-06 16:23	80m	-16 / -8	YO9XC	-3 / -11	6	✓ Full exchange observed
10-06 16:18	80m	-14 / -6	UN7CFG	-13 / -19	3	✓ Full exchange observed
10-06 16:13	40m	-16 / -6	DF3IS	+7 / -15	3	✓ Full exchange observed
10-06 16:07	40m	- / -15	G6ZRV	-3 / -	2	Partial capture
10-06 16:06	40m	- / -8	9A7R	+8 / -	2	✓ Closing fragment
10-03 16:20	80m	-14 / -8	RW9MZ	-20 / -16	4	✓ Full exchange observed
10-02 23:34	160m	- / -16	UA6JQ	-18 / -	2	✓ Closing fragment
10-02 23:34	160m	- / -6	OH5KNL	+8 / -	2	✓ Closing fragment
10-02 23:17	160m	- / -9	RM5F	+3 / -	2	Partial capture
10-02 23:17	160m	- / -2	RN3TT	-4 / -	2	✓ Closing fragment
10-02 23:06	80m	-11 / -	DO8JB	- / -20	2	Partial capture
10-02 22:54	40m	- / -13	EB3JT	-7 / -	4	✓ Closing fragment
10-02 01:41	40m	-11 / -	IK4TVP	- / -5	2	Partial capture
10-02 01:26	40m	-14 / -	OA4ENG	- / -19	2	Partial capture
10-02 01:19	80m	-10 / +2	R4HHN	0 / +5	4	✓ Full exchange observed
10-02 01:18	80m	-11 / -12	R8KAN	-6 / -10	4	✓ Full exchange observed
10-02 01:14	80m	-5 / -13	SX2LGT	-6 / -12	5	✓ Full exchange observed
10-02 01:12	80m	+1 / -8	DL1HDL	+3 / -	3	✓ Closing observed
10-02 01:07	80m	-11 / -1	DD4U	-1 / -16	3	✓ Full exchange observed
10-01 16:08	80m	- / +3	RV3IN	-10 / -	2	✓ Closing fragment
10-01 15:49	40m	-16 / -	R3PJ	-5 / -8	2	✓ Closing observed
09-30 16:58	80m	- / -6	SM5DXR	-6 / -	2	✓ Closing fragment
09-30 16:56	80m	- / -13	UC6D	-2 / -	3	✓ Closing fragment
09-30 16:42	40m	-5 / -7	RC6OT	+1 / +1	2	Partial capture
09-29 17:32	80m	-19 / -	DL0IR	- / -16	2	Partial capture
09-29 17:30	80m	- / -22	HA1BF	+12 / -	2	✓ Closing fragment
09-29 17:23	40m	- / -	9A3K	+14 / -	2	Partial capture
09-29 17:22	40m	-14 / -12	R6DJR	-4 / -	2	✓ Closing observed
09-29 17:03	40m	- / -	9A3K	+13 / -	3	Partial capture
09-29 17:02	40m	-10 / -	3D2USU	- / -20	2	✓ Closing fragment
09-29 15:01	80m	- / +1	RA3SI	-14 / -	2	✓ Closing fragment
09-29 14:14	40m	- / -5	9A3MRN	0 / -	2	✓ Closing fragment
09-29 14:09	40m	-12 / -	RN0D	- / -5	2	✓ Closing fragment
09-29 14:01	40m	- / -13	RK6YD	-15 / -	2	Partial capture
09-28 14:46	80m	- / -21	RD5D	-5 / -	3	✓ Closing fragment
09-26 01:21	80m	-20 / -	4X1UF	- / -9	2	Partial capture
09-26 01:20	80m	-12 / -	LY2EW	+5 / -	2	✓ Closing observed
09-26 01:08	80m	-9 / -8	S57TW	+2 / -	3	✓ Closing observed
09-25 17:25	80m	- / -12	SD5X	-2 / -	2	✓ Closing fragment
09-25 17:17	80m	- / -16	LA3ZPA	+8 / -	2	✓ Closing fragment
09-25 17:15	80m	- / -11	PA3EWP	+10 / -	2	✓ Closing fragment
09-25 17:13	80m	- / -11	R3PLA	-7 / -	2	✓ Closing fragment
09-25 17:10	80m	- / -23	EW2ZC	+4 / -	4	Partial capture
09-25 14:53	40m	- / -12	DK2SHS	+5 / -	3	Partial capture
09-24 15:25	80m	- / -2	EV1R	+11 / -	3	✓ Closing fragment
09-23 17:49	80m	- / -7	R6FFB	+1 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
201145  +8 2497  RD9FC RA3LBW 73
201215  -9 2598  RD9FC R4NBV LO56 (x3)
231715  -6 1506  RD9FC RN3TT R-02 (x2)
231745  +3  752  RD9FC RM5F KO85 (x2)
233415  +7 2354  RD9FC OH5KNL R-06
233445 -19 2183  RD9FC UA6JQ -16
233445  +8 2354  RD9FC OH5KNL 73
233515 -16 2181  RD9FC UA6JQ RR73
164530  +0 1447  RD9FC RW1C 73
164630 -20 1150  RD9FC UG4L R-15 (x2)

80m

UTC    dB Audio  Message
162345  +4 1202  RD9FC LZ1GC 73
162400 -13 2523  YO9XC RD9FC -11
162415  -1  903  RD9FC YO9XC R-08
162415  +0 2653  RD9FC YL2GJX KO26
162430 -19 2524  YO9XC RD9FC RR73
162445  -3  903  RD9FC YO9XC 73
162445  -1 2653  RD9FC YL2GJX KO26
162500 -20 2523  YL2GJX RD9FC -15
162515  +5 2653  RD9FC YL2GJX R-06
162530 -10 2524  YL2GJX RD9FC RR73
162545  +4 2653  RD9FC YL2GJX 73
162600 -20 2524  CQ RD9FC LO76
162630 -17 2523  R9MBC RD9FC -20 (x2)
162730 -16 2524  CQ RD9FC LO76

40m

UTC    dB Audio  Message
225415  -6 1344  RD9FC EB3JT JN01 (x4)
132015 -16 2442  RD9FC RC6AA KN96
040130  -8 1619  RD9FC 9A3K JN65
160100  -4 1046  RD9FC ON6OM R-06
160645  +7 2782  RD9FC 9A7R R-08
160715  -4 2475  RD9FC G6ZRV R-15
160715  +8 2782  RD9FC 9A7R 73
160815  -2 2474  RD9FC G6ZRV R-15
161300  -5 2256  RD9FC YO3JW RR73
161330 -16 2371  DF3IS RD9FC -15
161345  +7 2372  RD9FC DF3IS R-06 (x2)

20m

UTC    dB Audio  Message
093245  +1  656  RD9FC PD0PMF 73
093600  -2  779  RD9FC EB3JT JN01 (x5)
041115  -3  836  RD9FC XQ1KK 73
041315  -3  333  RD9FC R6FX LN14 (x2)
041600  -9 2035  RD9FC CE2SQE R-07
041830  -8 1577  RD9FC 7Z1CZ R-17 (x2)
021845 -17 2109  RD9FC PT2ND R-17
052115  -1  897  RD9FC ZL2BX R-11 (x2)

10m

UTC    dB Audio  Message
125630  -2 2082  RD9FC IU2IKT R-12 (x2)
114545  +9 2496  RD9FC HB9EFK R-11 (x2)
114845 -15 2172  RD9FC PD4WAC R-16 (x2)
115415  +0 1513  RD9FC F5NIB JN06 (x3)
115745  +5 1556  RD9FC IU2VBP JN45
115745 -13 1898  RD9FC F5GPE JN25
115815  +6 1554  RD9FC IU2VBP R-08
115815 -13 1898  RD9FC F5GPE JN25
115845  +5 1552  RD9FC IU2VBP 73
115945 -14 1898  RD9FC F5GPE 73

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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