RD4HP — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: LO43

Receiver-side FT8 activity involving RD4HP, decoded by SO8OO in southeastern Poland. 140 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 5 UTC dates in the available aggregate history. Observed between 2026-07-02 and 2026-09-13.

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 140 FT8 messages attributed to RD4HP as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (69%), followed by 40 m (29%) and 10 m (2%). Most decodes (96%) 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 -10 dB.

Overview

140

Messages attributed

UTC dates decoded

Active 15-min windows

-10 dB

Estimated median S/N

Bands

40m · 40 20m · 97 10m · 3

First attributed message: 2026-07-02
Last attributed message: 2026-09-13 13:05 UTC

Observed FT8 message patterns

Attributed sample: 140 messages
Active dates: 5 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -18 to +4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 31, moderate (-15 to -9 dB) 50, strong (≥ -8 dB) 59.

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 RD4HP in decoded directed-looking exchanges:

PU5MRL · Brazil RA7T · European Russia 9M8WWA · East Malaysia EU6AF · Belarus JR6UEE · Japan K2L · United States K3JGJ · United States M0PYU · England RG1L · European Russia RV9CX · Asiatic Russia UA4NCX · European Russia UB3YGA · 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 RD4HP

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: LO43 · 78 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,903 km (approx.)
Last such locator decoded: 2026-09-13 13:04 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	RD4HP S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 11:36	40m	- / -18	RA3LJ	-18 / -	2	✓ Closing fragment
09-13 13:04	40m	-15 / -7	HA0AA	-2 / -15	5	✓ Full exchange observed
09-13 12:16	40m	- / -	R6ML	-15 / -	3	Partial capture
09-13 12:15	40m	- / -5	RA6OD	-10 / -	2	Partial capture
09-13 12:11	40m	- / -1	R2EA	-12 / -	4	✓ Closing fragment
09-13 12:04	40m	-16 / -	UA3NFG	- / +2	2	✓ Closing fragment
09-13 11:53	40m	-14 / +1	R7DX	-16 / -	6	✓ Closing observed
09-13 11:52	40m	- / -6	RU7KQ	-18 / -	3	✓ Closing fragment
09-13 11:52	40m	-14 / -	RX9WM	- / +1	2	✓ Closing fragment
09-13 11:41	40m	- / -11	HG8LXL	-10 / -	10	✓ Closing fragment
09-13 11:35	40m	- / -12	DK4FH	-6 / -	2	✓ Closing fragment
09-13 11:33	40m	- / -	HG8LXL	-7 / -	4	Partial capture
09-13 11:32	40m	-14 / -2	EW4DX	+5 / -	4	✓ Closing observed
07-25 16:18	40m	- / -	RA3BY	-17 / -	3	Partial capture
07-25 16:17	40m	-16 / -	BA6IM	- / -16	2	✓ Closing fragment
07-25 16:12	40m	-14 / -	BA4UCC	- / -19	3	Partial capture
07-25 16:10	40m	- / 0	R3WDW	-4 / -	2	✓ Closing fragment
07-25 16:02	40m	-17 / -	RZ6L	- / -8	2	✓ Closing fragment
07-12 12:08	40m	- / -17	SP8RPA	-13 / -	3	Partial capture
07-07 13:55	10m	- / -14	ON7KEI	-18 / -	2	Partial capture
07-07 13:28	10m	-5 / -	PU5MRL	- / -9	2	✓ Closing fragment
07-07 12:29	20m	+4 / -	LB0XJ	- / -3	2	Partial capture
07-07 12:27	20m	+7 / -	W7C	- / -20	3	✓ Closing fragment
07-07 12:23	20m	+6 / -	K2L	- / -20	7	✓ Closing fragment
07-07 12:14	20m	+4 / -	W9DHI	- / -	2	Partial capture
07-07 12:10	20m	-2 / -	EU6AF	- / -21	4	✓ Closing fragment
07-07 12:09	20m	+2 / -	UA4NCX	- / -15	2	✓ Closing fragment
07-07 12:07	20m	0 / -	N5IF	- / -	3	Partial capture
07-07 11:56	20m	-9 / -	W7C	- / -	6	Partial capture
07-05 12:03	20m	+1 / -	M7YDM	- / -	3	Partial capture
07-05 11:59	20m	+3 / -	M0PYU	- / -	2	✓ Closing fragment
07-05 11:56	20m	0 / -	UB3YGA	-20 / -11	3	✓ Closing observed
07-02 13:52	20m	-19 / -	VK4ACZ	- / -	4	Partial capture
07-02 13:37	20m	-17 / -	VK4AWB	- / -18	2	Partial capture
07-02 13:28	20m	-20 / -	BH3HJA	- / -	2	Partial capture
07-02 13:22	20m	-13 / -	9M8WWA	- / -13	3	✓ Closing fragment
07-02 13:17	20m	-21 / -	BH4GWF	- / -11	2	Partial capture
07-02 13:16	20m	- / -	PE9JAN	-14 / -	2	Partial capture
07-02 12:01	20m	-11 / -	WC3W	- / -26	6	Partial capture
07-02 11:26	20m	-10 / -	AA4NP	- / -	4	Partial capture
07-02 11:23	20m	0 / -	DL6EL	-8 / -8	4	Partial capture
07-02 11:21	20m	-5 / -	K3JGJ	- / -18	4	✓ Closing fragment
07-02 11:17	20m	-8 / -	KE5QB	- / -	3	Partial capture
07-02 11:08	20m	+3 / -	KF0YOB	- / -15	4	Partial capture
07-02 10:56	20m	-6 / -	N1RP	- / -	2	Partial capture
07-02 10:43	20m	-8 / -	N8W	- / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
121245 -12  974  RD4HP R2EA -02 (x2)
121515  -8  907  RD4HP RA6OD KN97 (x2)
121615 -16  994  RD4HP R6ML LN17 (x3)
125930 -12  907  UA4FKT RD4HP RR73
130415  -2  918  RD4HP HA0AA -07
130430 -16  907  HA0AA RD4HP LO43 (x2)
130515  -2  918  RD4HP HA0AA RR73
130530 -14  906  HA0AA RD4HP 73
113615 -14 1413  RD4HP RA3LJ -18 (x2)

10m

UTC    dB Audio  Message
132230 -16 2432  RD4HP DN9AD JO52
132845  -3  367  PU5MRL RD4HP R-09 (x2)
132930  -1  833  RD4HP RA3BY KO75
135545 -21 1304  RD4HP ON7KEI R-14 (x2)
142830  -7  473  RA7T RD4HP 73

20m

UTC    dB Audio  Message
121545  +5 2864  W9DHI RD4HP LO43
121745  -9  276  KB9ELS RD4HP LO43
121815  -3  947  KF9KV RD4HP LO43
122300  +4  473  K2L RD4HP LO43 (x7)
122745  +4 2652  W7C RD4HP LO43 (x3)
122945  +1 2830  LB0XJ RD4HP -03 (x2)

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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