R5AV — 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: European Russia Most frequent locator attributed to this token: KO85

Receiver-side FT8 activity involving R5AV, decoded by SO8OO in southeastern Poland. 25,623 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 104 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-23.

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 25,623 FT8 messages attributed to R5AV as the transmitting token by decoded message structure across 104 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (37%), followed by 40 m (30%) and 80 m (24%). The busiest six-hour window was 19:00-01:00 UTC, containing 46% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (64%); the estimated median was -5 dB.

Overview

25,623

Messages attributed

104

UTC dates decoded

2,492

Active 15-min windows

-5 dB

Estimated median S/N

Bands

160m · 2,026 80m · 6,028 40m · 7,748 20m · 9,522 10m · 299

First attributed message: 2026-06-06
Last attributed message: 2026-10-23 07:21 UTC

Observed FT8 message patterns

Attributed sample: 25,623 messages
Active dates: 104 UTC dates
Estimated median S/N: -5 dB
Estimated 10th-90th percentile: -16 to +7 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2,934, moderate (-15 to -9 dB) 6,241, strong (≥ -8 dB) 16,448.

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 R5AV in decoded directed-looking exchanges:

SQ9SET · Poland ×11 UA3PTK · European Russia ×9 F5RRS · France ×8 US1EA · Ukraine ×8 OH3DJP · Finland ×7 PI4DX · Netherlands ×7 R2EA/P · European Russia ×7 R2SN · European Russia ×7 RA9YTI · Asiatic Russia ×7 RK6OV · European Russia ×6 DK6WS · Fed. Rep. of Germany ×6 IQ4JO · Italy ×6

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 R5AV

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 · 145 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,193 km (approx.)
Last such locator decoded: 2026-10-23 04:05 UTC

Other locator fields attributed to this token: KO93 (52).

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	R5AV S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-23 07:20	40m	-20 / -14	DL1DVE	-10 / -	2	✓ Closing observed
10-23 06:55	40m	-16 / -	DF7WH	- / -17	4	✓ Closing fragment
10-23 06:47	40m	-18 / -	ON5GM	- / -9	4	Partial capture
10-23 06:46	40m	-4 / -7	F5OIH	+2 / -17	4	✓ Full exchange observed
10-23 06:45	40m	-8 / -11	DH9DR	+9 / -4	4	✓ Full exchange observed
10-23 06:37	40m	-17 / -	ON5GM	- / -11	3	Partial capture
10-23 06:35	40m	-18 / -17	HA7JLR	-4 / -10	4	✓ Full exchange observed
10-23 06:32	40m	-18 / -	ON5GM	- / -5	3	Partial capture
10-23 06:22	40m	-19 / -	ON5GM	- / -3	5	Partial capture
10-23 06:18	40m	-15 / -	MM0ABM	- / -19	2	✓ Closing fragment
10-23 06:12	40m	- / -15	DJ2VA	-8 / -	2	✓ Closing fragment
10-23 06:09	40m	-2 / +1	DC7CM	-13 / -5	3	✓ Full exchange observed
10-23 06:07	40m	0 / -	F5MDW	-12 / -17	3	✓ Closing observed
10-23 06:05	40m	-6 / -	SM2JEB	- / -5	2	✓ Closing fragment
10-23 06:03	40m	-7 / -5	LZ2SPD	+4 / -7	5	✓ Full exchange observed
10-23 06:02	40m	-10 / -	SP3IPA	- / -11	2	✓ Closing fragment
10-23 05:57	40m	-12 / -19	S54ZO	-10 / -10	3	Partial capture
10-23 05:47	40m	-1 / -	F5BWS	- / -15	4	✓ Closing fragment
10-23 05:35	40m	-14 / +2	IK3OBX	-2 / -7	4	✓ Full exchange observed
10-23 05:31	40m	0 / -	DL5LB	- / -9	3	Partial capture
10-23 05:29	40m	- / -7	OV9A	-7 / -	2	✓ Closing fragment
10-23 05:25	40m	-4 / -12	E74MG	0 / -4	4	✓ Full exchange observed
10-23 05:12	160m	-12 / -9	G4IRN	+6 / -7	4	✓ Full exchange observed
10-23 04:54	160m	- / -17	SP6CIK	+8 / -	3	Partial capture
10-23 04:05	160m	- / -8	SP3DVO	-10 / -	2	Partial capture
10-23 04:01	160m	-2 / -8	SP3DVO	-10 / -22	4	Partial capture
10-23 03:58	160m	+2 / -1	UA3ZUX	-1 / -4	4	✓ Full exchange observed
10-23 03:41	160m	0 / -	RV9CX	- / -12	2	✓ Closing fragment
10-23 03:38	160m	+4 / 0	SP8XGU	-1 / -22	4	✓ Full exchange observed
10-23 03:33	160m	+2 / +1	RA5AD	+2 / +1	4	✓ Full exchange observed
10-23 03:31	160m	+10 / -14	DK2EU	+8 / -16	4	✓ Full exchange observed
10-23 03:17	160m	+2 / +6	RY3K	+2 / 0	4	✓ Full exchange observed
10-23 03:08	160m	-7 / -	R6TJ	- / -12	2	✓ Closing fragment
10-23 03:04	160m	+1 / +1	RN1ON	-10 / -4	4	✓ Full exchange observed
10-23 02:33	160m	-5 / +4	RA3LBK	-20 / -5	3	✓ Full exchange observed
10-23 02:20	160m	-2 / +4	RW9WJ	-9 / -1	4	✓ Full exchange observed
10-23 01:49	160m	-4 / -6	SP1IWC	-1 / -4	4	✓ Full exchange observed
10-23 01:24	160m	0 / -	SK3GA	- / -22	3	✓ Closing fragment
10-23 01:22	160m	+2 / +2	RA9AGL	-16 / -8	4	✓ Full exchange observed
10-23 00:58	160m	+11 / +1	R2EA/P	-3 / -5	3	✓ Full exchange observed
10-23 00:57	160m	+4 / 0	HA1SU	0 / -9	4	✓ Full exchange observed
10-23 00:11	160m	+1 / -	SP5UAF	-2 / -	3	✓ Closing observed
10-22 23:22	160m	-2 / -2	UA3IAP	-4 / -2	4	✓ Full exchange observed
10-22 23:06	160m	+9 / -21	SV8JNR	-11 / -19	5	✓ Full exchange observed
10-22 23:03	160m	+13 / -13	SV8OVJ	+6 / -	3	✓ Closing observed
10-22 22:55	160m	+13 / -13	OE3UKW	+10 / -14	4	✓ Full exchange observed
10-22 22:52	160m	+2 / -	OE1DGW	- / -23	3	Partial capture
10-22 22:49	160m	+2 / -	DL1LCK	-16 / -14	3	✓ Full exchange observed
10-22 22:16	160m	+2 / +4	HA7VC/P	+2 / -11	4	✓ Full exchange observed
10-22 22:11	160m	-2 / +7	DL6MRM	+5 / -8	3	✓ 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
064645  -3 2828  F5OIH R5AV RR73
064700  +3 2828  R5AV F5OIH 73
064745 -18 1590  ON5GM R5AV -09 (x4)
065030 -20 1355  DF7WH R5AV -13 (x5)
070615 -21 1734  G4RIQ R5AV -18
071030 -15 2083  F4CQS R5AV -19
072015 -10 1334  R5AV DL1DVE R-14
072100 -20 1333  DL1DVE R5AV RR73

160m

UTC    dB Audio  Message
035930  +0 2234  R5AV UA3ZUX 73
040145  -2 1238  SP3DVO R5AV -22
040230 -12 1237  R5AV SP3DVO -08 (x3)
040530  -6 1237  CQ R5AV KO85
040545  -7 1237  R5AV SP3DVO R-08 (x2)
045430  +8 1808  R5AV SP6CIK R-17 (x3)
051245 -11  617  G4IRN R5AV -07
051300  +6  617  R5AV G4IRN R-09
051315 -13  617  G4IRN R5AV RR73
051330  +6  617  R5AV G4IRN 73

60m

UTC    dB Audio  Message
191330  +1 1757  R5AV DC5PPM JN59 (x4)

80m

UTC    dB Audio  Message
030600  -2 1916  R5AV R6ZB R+01
030615 -12 1917  R6ZB R5AV RR73
030630  -5 1917  R5AV R6ZB 73
030645 -11 1739  9A60CBM R5AV -10 (x3)
030900  +3  592  R5AV R3KAB R-04
030945  +5  760  RN3YN R5AV RR73
031030  +2 1454  OZ6MM R5AV -19
031130 +10 2759  DO1DX R5AV -19
031145  +5 2758  R5AV DO1DX R-06
031200 +11 2759  DO1DX R5AV RR73
031215  +7 2758  R5AV DO1DX 73 (x3)

10m

UTC    dB Audio  Message
062415 -10 1647  R5AV 9K2HN R-13 (x2)
073615 -19 1770  R5AV 7Z1LR 73

20m

UTC    dB Audio  Message
154015  -6 2432  R6LQU R5AV -13 (x2)
154215  -8 1264  R5AV GW4ONI R+04
154230  -6 1264  GW4ONI R5AV RR73
154230 -11 2520  R5AV DL1NRC R-06 (x2)
154345  -4 2520  DL1NRC R5AV -09 (x2)
154430  -8 2520  R5AV DL1NRC 73
154445 -17 2117  R5AV YO3CWC R-03
154445  -6  898  M7KFU R5AV -07 (x2)
154615  -5 1706  9A3DZS R5AV -13
154715  -8 1354  SP5UKR R5AV -12
154745  -3 1418  OY5T R5AV -03

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

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee