RA4FHO — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: LO13

Receiver-side FT8 activity involving RA4FHO, decoded by SO8OO in southeastern Poland. 1,598 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 27 UTC dates in the available aggregate history. Observed between 2026-07-21 and 2026-09-17.

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 1,598 FT8 messages attributed to RA4FHO as the transmitting token by decoded message structure across 27 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (91%), followed by 40 m (7%) and 160 m (1%). Most decodes (94%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (87%); the estimated median was 0 dB.

Overview

1,598

Messages attributed

UTC dates decoded

176

Active 15-min windows

0 dB

Estimated median S/N

Bands

160m · 21 80m · 1,461 40m · 113 20m · 3

First attributed message: 2026-07-21
Last attributed message: 2026-09-17 20:03 UTC

Observed FT8 message patterns

Attributed sample: 1,598 messages
Active dates: 27 UTC dates
Estimated median S/N: 0 dB
Estimated 10th-90th percentile: -10 to +9 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 23, moderate (-15 to -9 dB) 192, strong (≥ -8 dB) 1,383.

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 RA4FHO in decoded directed-looking exchanges:

R2SN · European Russia ×3 ES2AJ · Estonia ×2 R5BS · European Russia ×2 R7AW · European Russia ×2 RW2Z · European Russia ×2 RZ6BS · European Russia ×2 UA3ZQN · European Russia ×2 CT7AUT · Portugal ×2 DL9KM · Fed. Rep. of Germany ×2 R5ACQ · European Russia ×2 R7KKO · European Russia ×2 R7OF · European Russia ×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 RA4FHO

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: LO13 · 578 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,507 km (approx.)
Last such locator decoded: 2026-09-17 20:03 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	RA4FHO S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-17 20:01	80m	-8 / -	7Z1DH	- / -	3	Partial capture
09-17 19:51	80m	-2 / -20	OE1KLA	+8 / -8	5	✓ Full exchange observed
09-17 19:50	80m	-8 / -10	UB3LBU	-1 / -	4	✓ Closing observed
09-17 19:38	80m	-9 / -	EX7DY	- / -	5	Partial capture
09-17 19:24	160m	- / -6	OH5KNL	0 / -	2	✓ Closing fragment
09-17 18:41	160m	-2 / -9	R2EC	-14 / -2	4	✓ Full exchange observed
09-17 18:35	160m	- / -18	UA3LID	-10 / -	3	✓ Closing fragment
09-17 18:30	160m	- / -8	R7AW	-2 / -	2	✓ Closing fragment
09-17 18:29	160m	-7 / -4	RN3QQT	-11 / -1	3	✓ Full exchange observed
09-17 18:25	160m	- / -7	UA3ZQN	-3 / -	2	✓ Closing fragment
09-17 17:56	160m	-6 / -16	RD1A/7	-5 / +1	3	Partial capture
09-17 17:53	160m	- / -9	R3RAF	-22 / -	2	✓ Closing fragment
09-17 17:48	160m	- / +3	ES2AJ	0 / -	3	✓ Closing fragment
09-17 17:44	160m	- / -	DL6MRS	-6 / -	3	Partial capture
09-17 17:41	160m	- / -1	RA1QD	+5 / -	2	✓ Closing fragment
09-17 17:37	160m	-4 / -19	RZ6BS	-16 / -	4	✓ Closing observed
09-17 17:36	160m	-9 / -25	RW2Z	-8 / -	4	✓ Closing observed
09-17 17:31	80m	+10 / -	R7FQ	-3 / -4	4	✓ Closing observed
09-17 17:30	80m	- / -	PG7VG	-10 / -	2	Partial capture
09-17 17:26	80m	+8 / -5	DL7UKM	+3 / -14	5	✓ Full exchange observed
09-17 17:26	80m	+13 / -14	IZ8VYU	+6 / -	4	✓ Closing observed
09-17 17:24	80m	+8 / 0	R3PLA	-8 / +3	5	✓ Full exchange observed
09-17 17:21	80m	+8 / 0	RU4SS	-13 / +1	5	✓ Full exchange observed
09-17 14:23	80m	- / -2	R3ZBR	-4 / -	2	✓ Closing fragment
09-16 19:39	80m	-11 / -	RI1FJZ	- / -15	5	Partial capture
09-16 19:33	80m	-9 / -	RI1FJZ	- / -	4	Partial capture
09-16 19:28	80m	-13 / -	RI1FJZ	- / -	6	Partial capture
09-16 17:57	80m	+4 / -8	HB9EFK	0 / -6	4	✓ Full exchange observed
09-16 16:46	80m	-10 / -	UN7CFG	- / -7	2	✓ Closing fragment
09-16 16:42	80m	-4 / -	RA4CQW/P	-19 / +1	3	✓ Full exchange observed
09-16 16:19	80m	+2 / -	R1QBQ	- / -5	2	✓ Closing fragment
09-16 16:17	80m	+2 / -2	RU5X	-12 / -2	4	✓ Full exchange observed
09-16 16:14	80m	+4 / -	RD1A/7	- / +6	2	Partial capture
09-16 15:45	80m	+3 / -	UA9D	- / +1	2	✓ Closing fragment
09-16 15:43	80m	+6 / -12	RM2P	-12 / -1	4	✓ Full exchange observed
09-16 15:09	80m	-2 / +1	R6ZE	+12 / -	4	✓ Closing observed
09-15 16:53	80m	0 / -	BI6PWL	- / -16	17	Partial capture
09-15 16:46	80m	-1 / -20	UA3RN	-4 / -11	2	Partial capture
09-15 15:59	40m	- / -6	RC9WC	-10 / -	2	✓ Closing fragment
09-15 15:55	40m	- / -6	R7OF	-4 / -	2	✓ Closing fragment
09-15 15:54	40m	-6 / -	RV3GZ	- / -	2	Partial capture
09-15 15:40	40m	-2 / -	R5ACQ	-14 / -	3	✓ Closing observed
09-11 19:06	40m	-4 / -	BA7IWL	- / -11	2	✓ Closing fragment
09-11 19:01	40m	-8 / -	BG0FQU	- / -6	2	✓ Closing fragment
09-11 18:21	40m	-9 / -	RL2F	- / -14	2	Partial capture
09-10 19:48	80m	+4 / -	DL6UM	-1 / -15	3	✓ Closing observed
09-10 19:47	80m	+4 / -1	YO4NF	+12 / -3	4	✓ Full exchange observed
09-10 19:43	80m	+2 / -1	EW6DM	-7 / -2	4	✓ Full exchange observed
09-10 19:40	80m	-2 / -	R3KJM	-11 / -2	4	✓ Closing observed
09-10 19:40	80m	-3 / +3	R4HKO	-13 / -3	3	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
194445 -11 1244  CQ RA4FHO LO13
195000  +0 1497  RA4FHO UB3LBU KO63 (x2)
195045  -8 2937  UB3LBU RA4FHO RR73
195100  -3 1497  RA4FHO UB3LBU 73
195145  +2 2937  OE1KLA RA4FHO LO13
195200  +6 2751  RA4FHO OE1KLA -20
195215  +0 2937  OE1KLA RA4FHO R-08
195230  +9 2751  RA4FHO OE1KLA RR73
195245  -7 2938  OE1KLA RA4FHO 73
195345  -3 2938  UB8CQC/P RA4FHO LO13
200000  +1 2937  YU7BW RA4FHO LO13
200145  -8 2937  7Z1DH RA4FHO LO13 (x3)

160m

UTC    dB Audio  Message
183045  -3 1040  RA4FHO R7AW -08 (x2)
183545  -8 1451  RA4FHO UA3LID KO64 (x3)
184030  -4 2935  9A2AJ RA4FHO LO13
184100  -3 2935  R2EC RA4FHO -02
184115 -15 2371  RA4FHO R2EC R-09
184130  -2 2935  R2EC RA4FHO RR73
184145 -14 2371  RA4FHO R2EC 73
184415 -18 2261  RA4FHO RT2P -11
185500  -5 2935  RA8AO RA4FHO LO13
190315  -9 2936  RI1FJZ RA4FHO LO13
192400  +1 2584  RA4FHO OH5KNL -06 (x2)

40m

UTC    dB Audio  Message
190430  -8 2819  JK1KDD RA4FHO RR73
190630  -6 2819  BA7IWL RA4FHO -11 (x2)
154015  -1 2900  R5ACQ RA4FHO LO13 (x2)
154130 -14 1885  RA4FHO R5ACQ RR73
154315  -1 2899  RI1FJZ RA4FHO R-16
155315 -10 2965  R7OF RA4FHO LO13
155445  -9 2965  RV3GZ RA4FHO LO13 (x2)
155530  -4 1920  RA4FHO R7OF -06 (x2)
155900 -11 2045  RA4FHO RC9WC -06 (x2)
160045 -10 2965  RA0SCZ RA4FHO RR73

20m

UTC    dB Audio  Message
171415  -8 3039  TJ1GD/P RA4FHO -13 (x2)
171645  -8 3039  BG7BMG RA4FHO 73
171730  -2 2852  RA4FHO R9DZ LO98 (x2)
172100  -6 3028  RA4FHO R6DJR RR73 (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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