JF2JRD — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Japan Most frequent locator attributed to this token: PM86

Receiver-side FT8 activity involving JF2JRD, decoded by SO8OO in southeastern Poland. 110 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 14 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-19.

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 110 FT8 messages attributed to JF2JRD as the transmitting token by decoded message structure across 14 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (82%), followed by 20 m (17%) and 80 m (1%). Several six-hour UTC windows tied for the largest share (98%), 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

110

Messages attributed

UTC dates decoded

Active 15-min windows

-12 dB

Estimated median S/N

Bands

80m · 1 40m · 90 20m · 19

First attributed message: 2026-06-06
Last attributed message: 2026-09-19 20:44 UTC

Observed FT8 message patterns

Attributed sample: 110 messages
Active dates: 14 UTC dates
Estimated median S/N: -12 dB
Estimated 10th-90th percentile: -18 to -7 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 22, moderate (-15 to -9 dB) 62, strong (≥ -8 dB) 26.

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 JF2JRD in decoded directed-looking exchanges:

LZ1GC · Bulgaria ×2 BA6IM · China E77FN · Bosnia-Herzegovina EA6UE · Balearic Islands EA8IN · Canary Islands JA2ATE · Japan RM4N · European Russia SP5MXZ · Poland UR7IBU · Ukraine 9A4V · Croatia 9A4ZM · Croatia 9A5CW · Croatia

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 JF2JRD

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: PM86 · 43 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,497 km (approx.)
Last such locator decoded: 2026-09-19 20:44 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	JF2JRD S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-19 21:12	40m	- / -	PD0IFI	+2 / -	2	Partial capture
09-19 21:10	40m	- / -	EB5AL	-1 / -	3	Partial capture
09-19 20:40	40m	- / -	EB5AL	0 / -	4	Partial capture
09-19 20:39	40m	-21 / -	A99AA	- / -	2	Partial capture
09-19 19:00	40m	-16 / -	HB0CC	- / -	2	Partial capture
09-19 19:00	40m	- / -	G0OYQ	0 / -	2	Partial capture
09-19 19:00	40m	-14 / +4	RA3S	+10 / -8	6	✓ Full exchange observed
09-19 18:58	40m	-12 / -9	SP4MPH	-8 / -7	4	✓ Full exchange observed
09-19 18:56	40m	- / -	F5PBG	+1 / -	4	Partial capture
09-19 18:55	40m	-11 / -18	I4RHP	+3 / -11	8	✓ Full exchange observed
09-19 18:53	40m	-10 / -	9H4JX	- / -	3	✓ Closing fragment
09-19 18:51	40m	- / -18	F4CQS	-9 / -	4	Partial capture
09-19 18:49	40m	-12 / -9	F6GGA	-7 / -	6	✓ Closing observed
09-19 18:47	40m	-8 / -14	OK1SI	-2 / -	3	✓ Closing observed
09-19 18:47	40m	-9 / -12	R3ES	+1 / -9	5	✓ Full exchange observed
09-19 18:47	40m	- / -	F5PBG	0 / -	3	Partial capture
09-19 18:47	40m	- / -2	RJ6ON	+4 / -	2	✓ Closing fragment
09-19 18:43	40m	- / -	ON4IQ	+18 / -	2	Partial capture
09-19 18:43	40m	- / -12	9A5CW	0 / -	4	✓ Closing fragment
09-19 18:42	40m	-8 / -7	DL6EL	+15 / -16	4	✓ Full exchange observed
09-19 18:41	40m	-8 / -11	IK1MNJ	+14 / -	4	✓ Closing observed
09-19 18:39	40m	- / -	DJ0MAB	+3 / -	2	Partial capture
09-19 18:39	40m	-9 / -	R3KHR	+2 / -	4	✓ Closing observed
09-19 18:39	40m	- / -15	DF1KW	+18 / -	3	✓ Closing fragment
09-19 18:39	40m	- / -	F5PBG	-1 / -	2	Partial capture
09-19 18:37	40m	- / -14	DB8WK	+11 / -	3	✓ Closing fragment
09-19 18:33	40m	-8 / +3	OH3MB	-1 / -15	4	✓ Full exchange observed
09-19 18:33	40m	-10 / -11	9A4ZM	+6 / -17	6	✓ Full exchange observed
09-19 18:32	40m	- / -	PE1NPS	-1 / -	3	Partial capture
09-19 18:27	40m	-10 / -9	R3ES	+11 / -7	5	Partial capture
09-19 18:27	40m	- / -9	UC6D	+15 / -	3	✓ Closing fragment
09-19 18:26	40m	- / -1	ON1DGN	-4 / -	2	✓ Closing fragment
09-19 18:24	40m	- / -	OH3MB	-2 / -	2	Partial capture
09-19 18:23	40m	- / -8	R4HNT	+5 / -	3	✓ Closing fragment
09-19 18:19	40m	-16 / -20	DL8TV	+3 / -21	5	✓ Full exchange observed
09-19 18:19	40m	-15 / -14	R6DJR	+4 / -11	3	✓ Full exchange observed
09-19 18:16	40m	- / -	DJ0MAB	+4 / -	4	Partial capture
09-19 18:16	40m	- / -17	US8KA	-10 / -	3	✓ Closing fragment
09-19 18:15	40m	- / -25	SP9NR	-6 / -	2	✓ Closing fragment
09-19 18:15	40m	- / -20	US2UM	+8 / -	6	✓ Closing fragment
09-17 19:31	80m	- / -	UX1AA	-2 / -	3	Partial capture
09-12 20:32	40m	- / -25	G0GFC	-2 / -	2	Partial capture
09-12 20:29	40m	- / -14	IZ5IMD	+17 / -	5	✓ Closing fragment
09-12 20:29	40m	- / -10	R7ZY	+2 / -	6	✓ Closing fragment
09-12 20:28	40m	- / -	PC2J	+4 / -	6	Partial capture
09-12 20:26	40m	- / -8	RK2A	-4 / -	2	✓ Closing fragment
09-12 20:21	40m	- / -	DJ0MAB	+9 / -	2	Partial capture
09-12 20:20	40m	- / -23	UR6QA	+4 / -	3	Partial capture
09-12 20:19	40m	- / -	IK5EEA	+1 / -	3	Partial capture
09-12 20:18	40m	- / -	DL1UDO	-5 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
190230 +14 2637  JF2JRD RA3S 73
190345 -11 2635  HB0CC JF2JRD PM86
203745 -15 1832  JF2JRD U1BD KO59
203900 -21 1680  A99AA JF2JRD PM86 (x2)
204015  -3  690  JF2JRD EB5AL IM99 (x4)
204400 -23 1679  A99AA JF2JRD PM86
211045  -2 2335  JF2JRD EB5AL IM99 (x3)
211245  +0 2235  JF2JRD PD0IFI JO32 (x2)

80m

UTC    dB Audio  Message
185100  +8 2249  JF2JRD R50RKZ RR73
203330 -10 2577  JF2JRD V51WH -08 (x2)
201445 -20 2292  R8AIM/0 JF2JRD PM86
201730  +9 2609  JF2JRD R1943OD -12
201800 +11 2609  JF2JRD RR73; JA1MJN <...> -14
193945  +6 1049  JF2JRD PI4DX -17 (x2)
194015 +17  511  JF2JRD DJ7M JN49 (x4)
193100  -2 1299  JF2JRD UX1AA KO70 (x3)

20m

UTC    dB Audio  Message
205430  -7  641  JF2JRD EA8IN -11 (x3)
215545  -8 1270  JF2JRD UR7IBU KN56 (x4)
215915 -11 1334  JF2JRD EA6UE JM19 (x3)
220115 -16 2408  JF2JRD SP5MXZ -05
220115 -11 1334  JF2JRD EA6UE 73
220145 -14 2408  JF2JRD SP5MXZ RR73
122415 -11  556  JF2JRD JA2ATE 73
135330  -6  459  JF2JRD TC30AGU -01

10m

UTC    dB Audio  Message
085930  -6  857  JF2JRD OZ8ABA R-07

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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