R4HLM — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: LO53

Receiver-side FT8 activity involving R4HLM, decoded by SO8OO in southeastern Poland. 465 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 36 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-09-12.

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 465 FT8 messages attributed to R4HLM as the transmitting token by decoded message structure across 36 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (45%), followed by 40 m (37%) and 20 m (17%). Several six-hour UTC windows tied for the largest share (96%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12 dB.

Overview

465

Messages attributed

UTC dates decoded

Active 15-min windows

-12 dB

Estimated median S/N

Bands

80m · 210 40m · 174 20m · 81

First attributed message: 2026-06-08
Last attributed message: 2026-09-12 20:50 UTC

Observed FT8 message patterns

Attributed sample: 465 messages
Active dates: 36 UTC dates
Estimated median S/N: -12 dB
Estimated 10th-90th percentile: -20 to -3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 130, moderate (-15 to -9 dB) 188, strong (≥ -8 dB) 147.

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 R4HLM in decoded directed-looking exchanges:

IK4LZH · Italy ×5 E70SZ · Bosnia-Herzegovina ×3 R2EA · European Russia ×3 RN6MA · European Russia ×2 IW4EGP · Italy ×2 OH5KNL · Finland ×2 R2AL · European Russia ×2 R2PT · European Russia ×2 RA3ZOM · European Russia ×2 RW3ZR · European Russia ×2 S59A · Slovenia ×2 DH1BAS · Fed. Rep. of Germany ×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 R4HLM

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 · 216 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,036 km (approx.)
Last such locator decoded: 2026-09-12 20:12 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	R4HLM S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-12 20:49	80m	-14 / -12	R2EA	-3 / -	3	✓ Closing observed
09-12 20:12	40m	-6 / -10	ON1DGN	-8 / -17	5	Partial capture
09-12 19:46	80m	- / -	SP3HLM	+7 / -	5	Partial capture
09-12 19:45	80m	- / +2	OH3OCM	-13 / -	2	Partial capture
09-12 19:42	80m	- / -22	R7KKO	-9 / -	2	Partial capture
09-12 19:41	80m	- / -9	R2EA	0 / -	2	✓ Closing fragment
09-12 19:39	80m	- / -8	R5KH	-16 / -	2	✓ Closing fragment
09-12 19:36	80m	-18 / -14	SP9UOP	+2 / -17	5	✓ Full exchange observed
09-12 19:36	80m	-13 / -12	RA2FU	-6 / -20	4	✓ Full exchange observed
09-12 19:32	80m	-12 / -	R5BM/M	- / -21	2	Partial capture
09-12 19:30	80m	- / -16	R2FEA	+12 / -	3	✓ Closing fragment
09-12 17:24	40m	- / -	OE6TNO	-7 / -	6	Partial capture
09-12 17:24	40m	- / -6	PA3EWP	-3 / -	2	✓ Closing fragment
09-12 17:21	40m	-16 / -2	RA6OY	+5 / -4	5	✓ Full exchange observed
09-12 17:20	40m	-10 / -	RC3DN	- / -6	2	✓ Closing fragment
08-29 18:37	80m	-20 / -10	RA3ZOM	-4 / -	3	✓ Closing observed
08-29 17:43	80m	- / -17	YO9XC	+13 / -	3	✓ Closing fragment
08-29 17:39	80m	-15 / -5	R3MBV	-8 / -	4	✓ Closing observed
08-29 17:37	80m	-14 / -24	OK1UOZ	+9 / -22	17	Partial capture
08-29 17:24	40m	+2 / +5	R3KJF	+1 / +7	5	✓ Full exchange observed
08-29 17:21	40m	-3 / -1	A93MO	-15 / -7	4	✓ Full exchange observed
08-29 17:20	40m	-2 / -7	DL1HQN	+2 / -	5	✓ Closing observed
08-29 17:16	40m	- / -7	UA3WG	+1 / -	3	✓ Closing fragment
08-29 17:13	40m	-3 / -10	G4DBW	-4 / -17	4	✓ Full exchange observed
08-29 17:11	40m	0 / -3	RA3WY	-4 / +4	4	✓ Full exchange observed
08-29 17:10	40m	0 / -	UB3BDB	- / -8	2	✓ Closing fragment
08-29 17:06	40m	0 / -10	RU3KA	-10 / +4	4	✓ Full exchange observed
08-29 17:04	40m	+1 / -	UB3ZKO	-7 / -22	2	Partial capture
08-29 17:02	40m	0 / -10	R8ACF	-9 / -	3	✓ Closing observed
08-29 17:01	40m	+1 / -6	RM4N	-14 / -	3	✓ Closing observed
08-29 16:59	40m	+1 / -4	RQ3P	-8 / +8	4	✓ Full exchange observed
08-29 16:58	40m	-1 / -10	G4DBW	-6 / -17	5	Partial capture
08-28 17:01	80m	-16 / -	R2AL	+6 / +1	5	✓ Full exchange observed
08-28 16:59	80m	-13 / -	YO7CFD	- / -	2	Partial capture
08-28 16:58	80m	- / -	YO8AAZ	+2 / -	5	Partial capture
08-28 16:56	80m	-14 / -2	UN7CL	-12 / +1	4	✓ Full exchange observed
08-28 16:55	80m	-14 / -1	R9DZ	-10 / +3	4	✓ Full exchange observed
08-28 16:49	40m	-4 / -	UA9FLJ	-16 / -2	2	Partial capture
08-28 16:47	40m	-6 / -20	PE1NPS	-13 / -20	7	✓ Full exchange observed
08-28 16:47	40m	- / -16	IK3TZB	-1 / -	9	Partial capture
08-27 17:28	80m	- / -8	RA3VX	-12 / -	2	✓ Closing fragment
08-27 17:26	80m	- / -7	EU6KA	-8 / -	4	✓ Closing fragment
08-25 19:19	20m	- / -	F4BYA	+14 / -	3	Partial capture
08-25 18:40	80m	- / -16	YT7DX	+6 / -	3	Partial capture
08-25 18:39	80m	- / -14	RA2FU	-7 / -	2	Partial capture
08-25 18:35	80m	- / -17	RX6DA	-12 / -	2	✓ Closing fragment
08-25 18:30	40m	- / -11	IV3FSG	+15 / -	4	Partial capture
08-23 18:26	40m	-10 / -	RU3BF	- / +8	2	✓ Closing fragment
08-23 18:24	40m	- / -	SV8GXC	-11 / -	9	Partial capture
08-23 18:24	40m	-10 / -	UA1ZQN	- / -9	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
194115  +5  434  R4HLM R2EA -09 (x2)
194245  -8 2616  R4HLM R7KKO -22 (x2)
194445 -21 1628  RY4D R4HLM LO53
194530 -13 1903  R4HLM OH3OCM +02
194630  +1 1629  R4HLM SP3HLM JO72 (x2)
194730 -13 1903  R4HLM OH3OCM RRR
194800 +10 1629  R4HLM SP3HLM JO72 (x3)
204945  +0  434  R4HLM R2EA -12 (x2)
205030 -14  432  R2EA R4HLM 73

40m

UTC    dB Audio  Message
172445  -3 2268  R4HLM PA3EWP RR73
172445  -8 1758  R4HLM OE6TNO JN77 (x6)
201045 -15 1125  CQ R4HLM LO53 (x3)
201215  -8 1677  R4HLM ON1DGN -10 (x2)
201300  -6  572  ON1DGN R4HLM R-17
201315  -8 1677  R4HLM ON1DGN -10 (x2)

20m

UTC    dB Audio  Message
190615 -14 1242  R4HLM PD0U R-16
190630  -2 1239  PD0U R4HLM RR73
190700  -6 1239  CQ R4HLM LO53 (x3)
113915 +10 2864  R4HLM F4BYA JN19 (x4)
191915 -11 2075  CQ R4HLM LO53
191930 +16 2917  R4HLM F4BYA JN19
191945 -14 2075  CQ R4HLM LO53
192000 +16 2917  R4HLM F4BYA JN19 (x2)
180200 -13 1893  R4HLM R6DJR RR73

10m

UTC    dB Audio  Message
085845 -12 1408  R4HLM R7DX 73
090145 -19 2183  R4HLM UB3YGA KO62
090145  -7 2593  R4HLM RQ7O KN98
090145 -10  992  R4HLM RC5F KO85 (x5)
090415 -20 1859  R4HLM UR6LTD KN89
090915 -24 1718  R4HLM RN3H +00
092100 -13 2253  R4HLM RU3GF RR73
092330 -10 2250  R4HLM RZ6LY +02
092400  -5 2738  R4HLM RZ6L KN97 (x3)

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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