R4HIV — 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: LO53

Receiver-side FT8 activity involving R4HIV, decoded by SO8OO in southeastern Poland. 141 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-06-24 and 2026-10-04.

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 141 FT8 messages attributed to R4HIV as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (55%), followed by 20 m (23%) and 40 m (14%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

141

Messages attributed

UTC dates decoded

Active 15-min windows

-11 dB

Estimated median S/N

Bands

160m · 77 80m · 11 40m · 20 20m · 33

First attributed message: 2026-06-24
Last attributed message: 2026-10-04 18:33 UTC

Observed FT8 message patterns

Attributed sample: 141 messages
Active dates: 7 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -22 to -1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 45, moderate (-15 to -9 dB) 40, strong (≥ -8 dB) 56.

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 R4HIV in decoded directed-looking exchanges:

RA3TOS · European Russia ×2 DL9KB · Fed. Rep. of Germany IK6GPZ · Italy JF1RYU · Japan LA7EIA · Norway LZ2IP · Bulgaria OH1LA · Finland OZ2LIN · Denmark R5AV · European Russia R8LCA · Asiatic Russia RA0SCA · Asiatic Russia RA6MQ · 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 R4HIV

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: LO53 · 52 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,036 km (approx.)
Last such locator decoded: 2026-10-04 18:31 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	R4HIV S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-23 16:22	160m	- / +3	RL9F	-17 / -	2	✓ Closing fragment
10-04 18:31	160m	-3 / -	SV3EXU	-5 / -19	4	✓ Closing observed
10-04 18:31	160m	-2 / -7	DL9KB	-5 / -10	6	✓ Full exchange observed
10-04 18:29	160m	-1 / -	OH1LA	- / -17	2	✓ Closing fragment
10-04 18:28	160m	-4 / +4	RL3FA	-10 / +1	4	✓ Full exchange observed
10-04 18:26	160m	-2 / -	RA6MQ	-13 / -2	3	✓ Closing observed
10-04 18:22	160m	0 / -4	OZ2LIN	-8 / -7	6	✓ Full exchange observed
10-04 18:18	160m	-11 / -19	OH6JD	0 / -5	7	Partial capture
10-04 18:16	160m	-8 / +5	SM1NJC	-12 / -6	6	✓ Full exchange observed
10-04 18:13	160m	-5 / -11	IK6GPZ	0 / -17	7	✓ Full exchange observed
10-04 18:12	160m	+1 / -	JF1RYU	- / -15	3	✓ Closing fragment
10-04 18:11	160m	-2 / -	RA3TOS	- / -13	2	✓ Closing fragment
10-04 18:11	160m	- / -	DO7DE	-21 / -	4	Partial capture
10-04 18:10	160m	-2 / -	UK8AEA	- / -8	2	✓ Closing fragment
10-04 18:08	160m	-2 / -	RA0SCA	- / -6	2	✓ Closing fragment
10-04 18:01	160m	-11 / -	RA0SCA	- / -	2	Partial capture
10-04 17:59	160m	-12 / -	SV8JNR	- / -9	3	✓ Closing fragment
10-04 17:56	160m	-9 / -	RA0SCA	- / -	3	Partial capture
10-04 17:54	160m	-3 / -3	LZ2IP	+18 / +2	6	✓ Full exchange observed
09-26 19:02	160m	- / 0	R5AV	-6 / -	2	✓ Closing fragment
09-26 18:58	160m	- / -	LY2BNL	-2 / -	2	Partial capture
09-26 18:53	160m	- / +1	UA3GX	0 / -	2	✓ Closing fragment
09-26 18:49	160m	-22 / +4	R2ATY	-23 / -	2	Partial capture
09-26 18:44	160m	- / +5	RU3T	-9 / -	2	✓ Closing fragment
09-26 18:42	160m	-19 / +3	RN1NEB	-20 / +2	3	✓ Full exchange observed
09-22 17:53	80m	-5 / -	ON8BZ	-13 / -14	2	✓ Closing observed
09-22 17:51	80m	-6 / +5	RU4HU	-11 / +3	4	✓ Full exchange observed
09-22 17:47	80m	-8 / -	RW4LMR	- / -	2	Partial capture
09-22 17:44	80m	-12 / -	RI1FJZ	- / -12	2	✓ Closing fragment
09-21 18:38	80m	-9 / -8	SQ8AA	+8 / -18	5	✓ Full exchange observed
09-21 17:42	40m	- / -18	R6TA	-2 / -	2	✓ Closing fragment
09-21 17:39	40m	-9 / -14	9A1CCB	+5 / -	4	✓ Closing observed
08-23 17:57	20m	-2 / -	RA7E	+9 / -7	3	✓ Closing observed
08-23 17:54	20m	-5 / -	OE6TNO	- / -16	3	✓ Closing fragment
08-23 17:48	20m	-10 / -	9A4AA	- / -	4	Partial capture

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
183015  -2 1255  OH1LA R4HIV 73
183045  -6 1254  RW3XZ R4HIV LO53
183115  -1 1255  DL9KB R4HIV LO53
183145  -3 1255  SV3EXU R4HIV LO53
183200  -1 1695  R4HIV DL9KB -07
183215  -3 1255  SV3EXU R4HIV R-19
183230  -5  512  R4HIV SV3EXU RR73
183230  +0 1695  R4HIV DL9KB -07
183245  -4 1255  SV3EXU R4HIV 73
183315  -1 1255  DL9KB R4HIV R-10
183330 -13 1695  R4HIV DL9KB RR73
183345  -3 1256  DL9KB R4HIV 73
162230 -14 2033  R4HIV RL9F +03 (x2)
163630 -12 1163  R4HIV RK1N -02

80m

UTC    dB Audio  Message
183815  +7 2299  R4HIV SQ8AA -08
183830 -10 1915  SQ8AA R4HIV R-18
183845 +10 2299  R4HIV SQ8AA RR73
183900  -8 1913  SQ8AA R4HIV 73
174445 -14 1576  RI1FJZ R4HIV R-12 (x2)
174700  -7 1576  RW4LMR R4HIV LO53 (x2)
175100  -7 1576  RU4HU R4HIV LO53
175115  -8 1478  R4HIV RU4HU +05
175130  -5 1576  RU4HU R4HIV R+03
175145 -14 1478  R4HIV RU4HU RR73
175300  -5 1576  ON8BZ R4HIV R-14
175315 -13 2132  R4HIV ON8BZ RR73
175430  -7 1576  UA3PKH R4HIV LO53

40m

UTC    dB Audio  Message
173900 -10 1700  9A1CCB R4HIV LO53 (x2)
174015  +1 2393  R4HIV 9A1CCB -14 (x2)
174215  -2  637  R4HIV R6TA R-18
174245 -20 1837  R4HIV UB3FBD KO85
174245  -2  637  R4HIV R6TA 73

20m

UTC    dB Audio  Message
174600  +0 1402  EW1P R4HIV 73
174815 -15 1403  9A4AA R4HIV LO53 (x4)
175400  -8 1865  OE6TNO R4HIV LO53 (x3)
175730  -5 1864  RA7E R4HIV R-07 (x2)
175845  +9 2875  R4HIV RA7E RR73

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