RA4HEV — 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 RA4HEV, decoded by SO8OO in southeastern Poland. 523 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 29 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-10-21.

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 523 FT8 messages attributed to RA4HEV as the transmitting token by decoded message structure across 29 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (49%), followed by 80 m (34%) and 40 m (17%). Most decodes (67%) 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 -12 dB.

Overview

523

Messages attributed

UTC dates decoded

116

Active 15-min windows

-12 dB

Estimated median S/N

Bands

80m · 177 40m · 89 20m · 255 10m · 2

First attributed message: 2026-06-08
Last attributed message: 2026-10-21 13:38 UTC

Observed FT8 message patterns

Attributed sample: 523 messages
Active dates: 29 UTC dates
Estimated median S/N: -12 dB
Estimated 10th-90th percentile: -20 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 158, moderate (-15 to -9 dB) 197, strong (≥ -8 dB) 168.

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 RA4HEV in decoded directed-looking exchanges:

RM5F · European Russia ×2 RY3K · European Russia ×2 RZ5D · European Russia ×2 UA4QK · European Russia ×2 R3PA · European Russia RA1N · European Russia RA3QTT · European Russia RX3PX · European Russia RY4C · European Russia TA7D · Asiatic Turkey BD8FOD · China DJ0MAB · Fed. Rep. of Germany

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 RA4HEV

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 · 262 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,036 km (approx.)
Last such locator decoded: 2026-10-21 13:37 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	RA4HEV S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-21 14:58	160m	- / -	OH5KNL	-1 / -	3	Partial capture
10-21 14:39	160m	- / -	OH5KNL	0 / -	2	Partial capture
10-21 13:37	40m	-18 / -1	RU4CK	-17 / -7	5	✓ Full exchange observed
10-21 13:34	40m	-12 / -	RA3MT	- / -2	2	Partial capture
10-21 13:21	40m	-15 / -3	OM2IB	+3 / -5	6	✓ Full exchange observed
10-16 14:03	40m	- / -2	RA6ZD	-17 / -	3	✓ Closing fragment
10-16 13:13	40m	-16 / -	BD8FOD	- / -	2	✓ Closing fragment
10-13 14:27	80m	- / +2	RY3K	-11 / -	3	✓ Closing fragment
10-13 14:05	40m	-17 / +2	OK1FRA	+15 / -6	4	✓ Full exchange observed
10-13 14:02	40m	-14 / -	R9OON	- / -8	3	✓ Closing fragment
10-13 13:59	40m	-19 / -18	DJ0MAB	-2 / -14	8	✓ Full exchange observed
10-13 13:58	40m	-22 / -	R3DIH	-14 / -8	3	✓ Full exchange observed
10-11 14:22	40m	-16 / -4	RZ3DAB	-9 / -2	4	✓ Full exchange observed
10-11 14:16	40m	- / -1	RZ3DAB	-10 / -	2	Partial capture
10-11 13:55	40m	-21 / -	R4LCH	- / 0	2	Partial capture
10-11 13:45	40m	- / -13	R1BRS	-10 / -	2	✓ Closing fragment
10-09 15:41	80m	-20 / -20	4Z5AV	-15 / -8	6	✓ Full exchange observed
10-09 15:39	80m	-16 / -	UR4SXA	- / -	2	Partial capture
10-09 15:37	80m	-16 / -2	RM3DM	-8 / -6	5	✓ Full exchange observed
10-09 15:34	80m	-8 / -	R8FH	-20 / 0	4	✓ Closing observed
10-09 15:30	80m	-20 / -	UN9LBC	- / -	3	Partial capture
10-09 15:29	80m	-12 / -	R6ZAJ	-22 / -10	3	✓ Closing observed
10-09 15:26	80m	-13 / -	R4DB	- / -	4	Partial capture
10-09 15:24	80m	-12 / -	UN9LBC	- / -	2	Partial capture
10-09 15:17	80m	-24 / -	RA3XDX	- / -	2	Partial capture
10-09 15:14	80m	-11 / -4	RD9FC	-17 / -1	4	✓ Full exchange observed
10-09 15:13	80m	-11 / -	RA9YTI	- / -9	3	✓ Closing fragment
10-09 14:19	80m	- / +3	RA4FP	-12 / -	2	✓ Closing fragment
10-08 16:08	80m	-12 / -	R4HMI	- / -13	2	✓ Closing fragment
10-08 16:07	80m	-8 / +5	R6ML	-8 / -4	6	✓ Full exchange observed
10-08 16:07	80m	-13 / -	R0SCF	- / -16	3	✓ Closing fragment
10-08 16:04	80m	-14 / -	R4FES	- / -5	4	✓ Closing fragment
10-08 15:58	80m	-17 / -11	UB6OAK	-18 / -7	5	✓ Full exchange observed
10-08 15:52	80m	-20 / -	RZ8U	- / -18	3	✓ Closing fragment
10-08 15:51	80m	-12 / -10	RW6HP	-10 / -5	6	✓ Full exchange observed
10-08 15:50	80m	-12 / -	R8CKD	- / -9	3	✓ Closing fragment
10-08 15:47	80m	-15 / -7	UA6AAW	-8 / -5	5	✓ Full exchange observed
10-08 15:41	80m	-19 / +6	RD7O	0 / -4	4	✓ Full exchange observed
10-08 15:39	80m	-24 / -9	UB6OAJ	0 / +2	5	✓ Full exchange observed
10-08 15:37	80m	-24 / -5	R6OQ	-15 / -8	5	✓ Full exchange observed
10-08 15:32	80m	-18 / -	RT2P	- / -	2	Partial capture
10-08 15:19	80m	- / -15	YO4BXX	-5 / -	2	✓ Closing fragment
10-08 15:09	80m	-19 / -13	SM6MUY	0 / -	3	✓ Closing observed
10-07 15:52	80m	-18 / -	R0ADK	- / -13	2	✓ Closing fragment
10-07 15:50	80m	-16 / -	SP5IT	- / -	2	Partial capture
10-03 16:10	80m	-8 / -	OH7FAE	-4 / -13	5	✓ Full exchange observed
10-03 16:06	80m	-9 / -4	R3ZBY	-11 / -3	4	✓ Full exchange observed
10-03 16:00	80m	-8 / -3	R1IV	+2 / -4	6	✓ Full exchange observed
10-03 15:59	80m	-6 / -	RA6Z	-8 / -10	3	✓ Closing observed
10-03 15:55	80m	-8 / -	R3KLE	- / -7	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
171830 -10 1255  RA4HEV RY4C -05 (x2)
171930  -9  585  RA4HEV RM5F KO85 (x3)
163500  -9 1594  RA4HEV RR73; SP3BPU <...> -16
164545  -8  710  RA4HEV QSO B4
164715  -7 1103  RA4HEV R0QBB/3 -18
170115 -14  710  RA4HEV QSO B4
143900  +1 2473  RA4HEV OH5KNL KP30 (x5)
155345 -12 1108  RA4HEV RT2P KO84

40m

UTC    dB Audio  Message
132130 -15 1335  OM2IB RA4HEV LO53
132145  +5 1683  RA4HEV OM2IB -03
132200 -15 1335  OM2IB RA4HEV LO53
132215  +1 1683  RA4HEV OM2IB -05
132230 -16 1335  OM2IB RA4HEV R-05
132245  +3 1683  RA4HEV OM2IB RR73
132400 -16 1335  R4UAS RA4HEV -04
133330 -13 1186  US5WFL RA4HEV LO53
133415 -12 1187  RA3MT RA4HEV LO53 (x2)
133700 -20 1402  RU4CK RA4HEV LO53
133745 -19 1532  RA4HEV RU4CK -01
133800 -15 1402  RU4CK RA4HEV R-07
133815 -15 1532  RA4HEV RU4CK RR73
133830 -19 1402  RU4CK RA4HEV 73

80m

UTC    dB Audio  Message
153800 -18 1348  RM3DM RA4HEV R-06
153815  -6 1445  RA4HEV RM3DM RR73
153830 -19 1347  RM3DM RA4HEV 73
153930 -20 1348  UR4SXA RA4HEV LO53 (x2)
154130 -20 1944  RA4HEV 4Z5AV -20
154145 -20 1348  4Z5AV RA4HEV R-08
154200 -16 1944  RA4HEV 4Z5AV -20
154215 -21 1348  4Z5AV RA4HEV R-09
154230  -9 1944  RA4HEV 4Z5AV RR73
154245 -19 1348  4Z5AV RA4HEV 73
154430 -13 1332  LY3GY RA4HEV LO53
142730 -11 1251  RA4HEV RY3K +02 (x3)

20m

UTC    dB Audio  Message
112845  -8  789  RA4HEV TA7D RR73
112900 -19 1291  TA7D RA4HEV 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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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