RO5A — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KO85

Receiver-side FT8 activity involving RO5A, decoded by SO8OO in southeastern Poland. 580 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 59 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-20.

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 580 FT8 messages attributed to RO5A as the transmitting token by decoded message structure across 59 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (85%), followed by 20 m (12%) and 80 m (2%). Most decodes (52%) fell within the six-hour window 11:00-17:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8.9 dB.

Overview

580

Messages attributed

UTC dates decoded

129

Active 15-min windows

-8.9 dB

Estimated median S/N

Bands

80m · 11 40m · 494 20m · 71 10m · 4

First attributed message: 2026-06-06
Last attributed message: 2026-09-20 11:58 UTC

Observed FT8 message patterns

Attributed sample: 580 messages
Active dates: 59 UTC dates
Estimated median S/N: -8.9 dB
Estimated 10th-90th percentile: -17 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 95, moderate (-15 to -9 dB) 198, strong (≥ -8 dB) 287.

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 RO5A in decoded directed-looking exchanges:

UA3PTY · European Russia ×2 R6LKG · European Russia UA6JQ · European Russia 7Z1CZ · Saudi Arabia AD9GE · United States BA3NZ · China HZ1ES · Saudi Arabia R3KAB · European Russia R6AAU · European Russia R6OAG · European Russia R6ZQ · European Russia RG5A · 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 RO5A

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: KO85 · 193 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,193 km (approx.)
Last such locator decoded: 2026-09-20 11:58 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	RO5A S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 11:58	40m	-16 / +3	R6OIW	-22 / -	2	Partial capture
09-16 15:29	40m	-4 / -9	UB6ZDJ	-12 / -12	3	✓ Full exchange observed
09-16 15:24	40m	+2 / -	R0WC	- / -16	2	Partial capture
09-15 03:59	40m	-6 / -	RC1C	- / -14	2	Partial capture
09-13 15:47	40m	-2 / -	R6HV/P	- / -9	3	Partial capture
09-13 15:45	40m	-5 / -	R6YG	-6 / -13	4	✓ Closing observed
09-11 02:28	40m	- / -12	RA6FRI	+16 / -	3	Partial capture
09-10 15:09	40m	- / -19	RA9CMO	-19 / -	2	✓ Closing fragment
09-10 15:08	40m	-11 / -6	DB0IPA	+2 / -14	6	✓ Full exchange observed
09-10 03:24	40m	- / -10	HC2GRC	-11 / -	2	✓ Closing fragment
09-10 01:40	40m	- / -16	PY5QW	-11 / -	2	Partial capture
09-09 15:24	40m	-10 / -	DP75BAC	- / -8	2	Partial capture
09-09 15:22	40m	-5 / -	YD0BHE	- / -10	4	✓ Closing fragment
09-08 14:55	40m	-12 / -	UA0ACZ	- / +1	3	✓ Closing fragment
09-08 14:53	40m	-9 / -	UC6Y	- / +2	3	✓ Closing fragment
09-07 14:43	40m	-10 / -1	HG7HU	0 / -11	4	✓ Closing observed
09-07 14:39	40m	-12 / +10	R2YW	-4 / -	4	✓ Full exchange observed
09-07 00:13	40m	+2 / -	WB8BPU	- / -17	2	Partial capture
09-06 15:56	40m	-3 / -	TA7D	- / -9	2	Partial capture
09-06 15:54	40m	-1 / -	RK3YWA	-12 / +10	7	✓ Full exchange observed
09-06 05:18	40m	-7 / -19	5P2F/P	-6 / -10	2	Partial capture
09-06 05:16	40m	-13 / -	OZ3FYN/P	- / -8	3	✓ Closing fragment
09-06 05:10	40m	-3 / -12	T77NC	-2 / -19	6	✓ Closing observed
09-06 01:14	40m	+2 / -5	OU7M/P	+7 / -5	7	✓ Full exchange observed
09-06 01:11	40m	-3 / -6	LA1SFG/P	-6 / -10	5	✓ Full exchange observed
09-06 01:02	80m	- / -10	OU7M/P	+17 / -	6	Partial capture
09-06 00:49	40m	+6 / -	OU7M/P	- / -6	3	Partial capture
09-06 00:44	40m	+7 / -	HK3X	- / -14	3	Partial capture
09-05 15:34	40m	-4 / -	BH8RDW	- / -17	3	✓ Closing fragment
09-05 15:32	40m	-8 / -1	OZ7KJ/P	-1 / 0	4	✓ Full exchange observed
09-05 15:29	40m	-11 / -	BH8RDW	- / -14	3	Partial capture
09-05 15:27	40m	- / -10	R3LCW	0 / -	2	✓ Closing fragment
09-05 15:25	40m	-16 / -	R4AGO	- / +1	2	✓ Closing fragment
09-05 15:22	40m	-12 / -	RA0WBI	- / -7	2	Partial capture
09-05 04:12	40m	-5 / -	4Z5NN	- / -9	3	Partial capture
09-05 04:11	40m	-4 / -	UN7ECA/P	- / -15	2	Partial capture
09-04 15:53	40m	-5 / -	R1TET	- / -	2	✓ Closing fragment
09-04 15:51	40m	-6 / -10	SP7FID	+5 / -6	6	✓ Full exchange observed
09-02 15:22	40m	-3 / -	R8KBH	- / -8	3	✓ Closing fragment
09-02 15:18	40m	-14 / -	YC5YZ	- / -13	3	✓ Closing fragment
09-02 15:14	40m	-12 / -	BI6NYR	- / -15	4	✓ Closing fragment
09-02 00:36	40m	-11 / -	VU2SW	-5 / -16	2	✓ Closing observed
09-01 15:16	40m	0 / -	BG7BVP	- / -18	2	Partial capture
09-01 15:12	40m	0 / -	RJ9M	- / -8	2	✓ Closing fragment
08-30 16:43	40m	-8 / +3	R6DVV	-7 / -13	5	✓ Full exchange observed
08-30 16:42	40m	-8 / -	EU6UE	-10 / -5	5	✓ Full exchange observed
08-30 16:35	40m	-16 / -7	R1CF	-8 / +3	6	✓ Full exchange observed
08-30 13:48	20m	- / +2	RG5A	+12 / -	3	✓ Closing fragment
08-30 13:19	20m	- / -	IU8WRA	-4 / -	4	Partial capture
08-30 13:18	20m	-15 / -14	R6AAU	+2 / -15	5	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
154615  -2  928  R6YG RO5A 73
154715  +1  928  R6HV/P RO5A -09 (x3)
014630  -6 1041  RO5A SV9QWC -12
035715  -8 2316  K1QD RO5A KO85
035900  -6 2346  RC1C RO5A KO85 (x2)
152430  +1 2616  R0WC RO5A -16 (x2)
152900  -3  754  UB6ZDJ RO5A -12
152915 -12 2083  RO5A UB6ZDJ R-09
152930  -4  753  UB6ZDJ RO5A RR73
115815 -16 1210  R6OIW RO5A KO85
120000 -22 1672  RO5A R6OIW +03

80m

UTC    dB Audio  Message
014915  -6 2395  8S7DL RO5A -16 (x3)
015030  +9 1004  RO5A 8S7DL 73
015130  +5 2394  RC6OD RO5A KO85 (x2)
015215  +3  999  RO5A RC6OD R-05
015230  +3 2394  RC6OD RO5A RR73
015245  +4  999  RO5A RC6OD 73
010245 +15  404  RO5A OU7M/P -10 (x6)

20m

UTC    dB Audio  Message
125730 -10 2560  R6OAG RO5A 73
112830 -18 2286  R9JAU RO5A KO85 (x2)
131800  +3 1157  RO5A R6AAU -14
131815 -16 1159  R6AAU RO5A R-15
131830  +1 1156  RO5A R6AAU R-14
131845 -14 1157  R6AAU RO5A RR73
131900  +2 1155  RO5A R6AAU R-14
131900  -4  929  RO5A IU8WRA JM89 (x4)
134845 +15 2554  RO5A RG5A KN93 (x3)

10m

UTC    dB Audio  Message
045715 -19 1376  DA0WWA RO5A +14
045845 -18 1376  UA6JQ RO5A 73
050115 -17 1375  R6LKG RO5A RR73
050130 -12  264  RO5A R6LKG 73
140300 -24 1685  ZS6MGM RO5A KO85

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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