JN7FAH — 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: Japan Most frequent locator attributed to this token: QM08

Receiver-side FT8 activity involving JN7FAH, decoded by SO8OO in southeastern Poland. 38 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 5 UTC dates in the available aggregate history. Observed between 2026-08-13 and 2026-11-04.

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 38 FT8 messages attributed to JN7FAH as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (92%), followed by 40 m (8%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -16 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-16 dB

Estimated median S/N

Bands

80m · 35 40m · 3

First attributed message: 2026-08-13
Last attributed message: 2026-11-04 21:25 UTC

Observed FT8 message patterns

Attributed sample: 38 messages
Active dates: 5 UTC dates
Estimated median S/N: -16 dB
Estimated 10th-90th percentile: -19 to -10 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 21, moderate (-15 to -9 dB) 16, strong (≥ -8 dB) 1.

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 JN7FAH in decoded directed-looking exchanges:

IS0BQE · Sardinia ×2 DF7EF · Fed. Rep. of Germany E73S · Bosnia-Herzegovina LA9GX · Norway LY7M · Lithuania OH3XR · Finland OH5KNL · Finland OM2WQ · Slovak Republic SP9WZS · Poland SV8QG · Greece UX0LL · Ukraine DF2GH · 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 JN7FAH

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: QM08 · 18 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,525 km (approx.)
Last such locator decoded: 2026-11-04 21:17 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	JN7FAH S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-04 21:25	80m	- / -	OM2WQ	+8 / -	3	Partial capture
11-04 21:22	80m	-11 / -17	OK4FX	+13 / -14	8	✓ Full exchange observed
11-04 21:20	80m	-10 / -	DF2GH	+14 / -	4	✓ Closing observed
11-04 21:17	80m	-13 / -15	IS0BQE	-3 / -14	10	✓ Full exchange observed
11-03 21:23	80m	- / -22	OE8DDX	+19 / -	2	✓ Closing fragment
11-03 21:09	80m	-14 / -13	SP5OXJ	-2 / -13	7	✓ Full exchange observed
11-03 21:03	80m	- / -12	UX5UO	+7 / -	5	✓ Closing fragment
11-01 20:35	160m	- / -	F6BPZ	-6 / -	5	Partial capture
11-01 20:35	160m	- / -9	SV8QG	-18 / -	2	✓ Closing fragment
11-01 20:31	160m	- / -	EW1I	+18 / -	2	Partial capture
11-01 20:30	160m	- / -13	LA9GX	-2 / -	4	✓ Closing fragment
11-01 20:27	160m	- / -	RN1CW	-11 / -	3	Partial capture
11-01 19:53	160m	- / -13	UX0LL	-8 / -	2	✓ Closing fragment
11-01 19:52	160m	- / -19	SP9WZS	+25 / -	2	✓ Closing fragment
10-31 17:50	160m	- / -16	IK0MHR	0 / -	2	Partial capture
10-28 14:59	80m	- / -	UA4FKT	-1 / -	2	Partial capture
10-27 16:42	160m	- / -	OH3NXW	-6 / -	3	Partial capture
10-26 15:46	160m	- / -9	OH3XR	-2 / -	5	✓ Closing fragment
10-18 20:26	160m	- / -	PA3DUU	-6 / -	4	Partial capture
10-18 20:24	160m	- / -14	DF7EF	+3 / -	5	✓ Closing fragment
10-18 20:24	160m	- / -	9A4ZM	-6 / -	2	Partial capture
10-18 20:22	160m	- / -	HA6NN	-10 / -	10	Partial capture
10-18 20:21	160m	- / -	SP6ZC	+8 / -	3	Partial capture
10-18 20:20	160m	- / -12	YO3YV	-19 / -	3	Partial capture
10-18 20:19	160m	- / -25	OM2WQ	+14 / -	7	✓ Closing fragment
10-18 20:15	160m	- / -	YO3YV	-11 / -	4	Partial capture
10-18 20:12	160m	- / -21	E73S	0 / -	2	✓ Closing fragment
10-12 20:47	80m	-14 / -19	HB9BLQ	+3 / -14	11	✓ Full exchange observed
10-12 20:45	80m	-16 / -	ER5DX	-11 / -14	5	✓ Closing observed
10-05 20:33	80m	- / -	DF2GH	+11 / -	2	Partial capture
10-05 20:32	80m	- / -	9A3MA	+4 / -	8	Partial capture
09-15 20:29	80m	- / -23	LB1UK	-1 / -	6	✓ Closing fragment
09-15 20:27	80m	-19 / -15	LX2A	+2 / -14	6	✓ Full exchange observed
09-15 19:58	160m	- / -	SV2AEL	+10 / -	6	Partial capture
09-15 19:56	160m	- / -19	OH5KNL	+2 / -	2	✓ Closing fragment
09-15 19:25	40m	- / -	RX3DRC	-12 / -	2	Partial capture
09-15 19:13	40m	-18 / -	RI1FJZ	- / -	3	Partial capture
09-15 19:13	40m	- / -	IU8WQW	-14 / -	3	Partial capture
09-15 19:13	40m	- / -	UR3QKC	-3 / -	2	Partial capture
08-13 18:40	80m	- / -	RY7F	+4 / -	2	Partial capture
08-13 18:39	80m	- / -	RA3GZ	+6 / -	3	Partial capture
08-13 18:39	80m	-18 / -19	SV2AEL	+2 / -	5	✓ Closing observed
08-13 18:37	80m	- / -9	OH1MLZ	+14 / -	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
212045 +11 1411  JN7FAH DF2GH JN68 (x2)
212130  -9 2600  DF2GH JN7FAH RR73 (x2)
212215  +9  465  JN7FAH OK4FX JO70 (x2)
212400 -10 2600  OK4FX JN7FAH -14
212415 +10 2435  JN7FAH OK4FX R-17
212430 -14 2600  OK4FX JN7FAH RR73
212445 +10 2435  JN7FAH OK4FX R-17
212500 -10 2600  OK4FX JN7FAH RR73
212515 +15 2435  JN7FAH OK4FX 73
212545  +8 2243  JN7FAH OM2WQ JN88 (x3)

160m

UTC    dB Audio  Message
202815 -14 1828  JN7FAH RN1CW KO59
203015  -3 2094  JN7FAH LA9GX JO59 (x4)
203145 +18 2807  JN7FAH EW1I KO33 (x2)
203245 -14 1967  JN7FAH SV8QG KM39 (x3)
203545  -4 1701  JN7FAH F6BPZ JN35 (x5)

40m

UTC    dB Audio  Message
191300  -2 1333  JN7FAH UR3QKC KN77
191300 -15 1384  JN7FAH IU8WQW JM78
191315 -17 1384  RI1FJZ JN7FAH QM08
191330  -4 1333  JN7FAH UR3QKC KN77
191330 -14 1384  JN7FAH IU8WQW JM78
191345 -17 1384  RI1FJZ JN7FAH QM08 (x2)
191530 -13 1384  JN7FAH IU8WQW JM78
192530 -13  979  JN7FAH RX3DRC KO85 (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.

CW

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

Explore CW reception at SO8OO

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