JA7FTR — 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 JA7FTR, decoded by SO8OO in southeastern Poland. 45 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-20.

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 45 FT8 messages attributed to JA7FTR 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 (69%), followed by 40 m (22%) and 20 m (9%). Most decodes (91%) fell within the six-hour window 15:00-21:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-9 dB

Estimated median S/N

Bands

80m · 31 40m · 10 20m · 4

First attributed message: 2026-06-06
Last attributed message: 2026-10-20 19:59 UTC

Observed FT8 message patterns

Attributed sample: 45 messages
Active dates: 5 UTC dates
Estimated median S/N: -9 dB
Estimated 10th-90th percentile: -16 to -1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 16, strong (≥ -8 dB) 22.

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 JA7FTR in decoded directed-looking exchanges:

4J3DJ · Azerbaijan F9SS · France S52R · Slovenia SP6FME · Poland UB6OFG · European Russia UR4LBG · Ukraine 4Z5AV · Israel DK7ZT · Fed. Rep. of Germany DL2MIJ · Fed. Rep. of Germany EA6Y · Balearic Islands HA7XL · Hungary LA9GX · Norway

Most frequent locator attributed to JA7FTR

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 · 15 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,525 km (approx.)
Last such locator decoded: 2026-10-18 20:38 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	JA7FTR S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-20 19:58	40m	-16 / -	JR4FSG	- / -19	2	Partial capture
10-20 19:57	40m	-16 / -16	SP6FME	-18 / -11	3	✓ Full exchange observed
10-20 19:54	40m	-14 / -	UW5KW	- / -13	2	Partial capture
10-20 19:54	40m	-16 / +2	UR4LBG	-1 / -4	9	✓ Full exchange observed
10-20 19:54	40m	-17 / -9	S52R	-20 / -	2	✓ Closing observed
10-18 20:41	80m	-6 / +3	DK7ZT	-5 / -12	5	✓ Full exchange observed
10-18 20:41	80m	-6 / -	SV6AYW	- / -16	2	Partial capture
10-18 20:40	80m	-6 / -	DL2MIJ	- / -20	2	✓ Closing fragment
10-18 20:38	80m	-3 / -	EA6Y	-2 / -16	4	✓ Closing observed
10-18 20:34	80m	+2 / -	LZ1ZF	- / -	4	Partial capture
10-18 20:29	80m	-7 / -20	LY1DY	0 / -19	5	✓ Full exchange observed
10-18 20:28	80m	-5 / -	LZ1ZF	- / -	2	Partial capture
10-18 20:21	80m	- / -22	LA6OP	-2 / -	2	Partial capture
10-18 20:13	80m	-12 / -18	ER3BN	-9 / -19	2	Partial capture
10-18 20:13	80m	-12 / -13	LA9GX	+7 / -11	4	✓ Full exchange observed
10-18 20:12	80m	-10 / -13	SP6GCU	+10 / -13	4	✓ Full exchange observed
10-18 20:09	80m	-8 / -13	YL3KZ	+2 / -16	8	✓ Full exchange observed
10-18 20:09	80m	-10 / -15	UW5KW	+4 / -9	3	✓ Full exchange observed
10-18 20:08	80m	-14 / -	LZ1ZF	- / -	2	Partial capture
10-17 19:53	40m	- / -8	UB6OFG	+5 / -	3	✓ Closing fragment
10-13 20:05	80m	-12 / -14	ES2AJ	+19 / -	3	Partial capture
10-11 20:09	80m	- / -	LY1DY	+5 / -	4	Partial capture
10-11 20:08	80m	- / -13	OT7K	+18 / -	3	✓ Closing fragment
10-11 20:08	80m	- / -22	SP5MXZ	+10 / -	2	✓ Closing fragment
10-11 19:56	80m	- / -11	4Z5AV	-8 / -	2	✓ Closing fragment
10-02 20:42	80m	- / -	UA4FKT	+4 / -	2	Partial capture
09-30 15:51	80m	- / -	UA6HJT	-11 / -	2	Partial capture
09-30 15:49	80m	-22 / -18	LZ1GC	+1 / -	5	✓ Closing observed
09-30 15:47	80m	- / -21	HA7XL	+5 / -	6	✓ Closing fragment
09-30 15:47	80m	- / -18	YO7CFD	+15 / -	4	✓ Closing fragment
09-30 15:46	80m	- / -	UA4FKT	-7 / -	4	Partial capture
09-30 15:45	80m	- / -	R7KR	-12 / -	2	Partial capture
09-30 15:44	80m	- / -14	RQ7O	-4 / -	4	✓ Closing fragment
09-24 16:13	160m	- / -	UX1AA	-12 / -	4	Partial capture
08-21 13:35	20m	- / -22	F9SS	0 / -	4	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
195500  +7 2435  JA7FTR UR4LBG KN89
195515 -15 2089  UW5KW JA7FTR -13
195530  +2 2435  JA7FTR UR4LBG KN89
195545 -20 2090  UR0MC JA7FTR -06
195600  +1 2435  JA7FTR UR4LBG KN89 (x2)
195645 -16 2089  UR4LBG JA7FTR -04
195700  -7 2434  JA7FTR UR4LBG R+02
195715 -15 2089  UR4LBG JA7FTR RR73
195730  -2 2434  JA7FTR UR4LBG 73
195745 -17 2090  SP6FME JA7FTR -11
195800 -18 2090  JA7FTR SP6FME R-16
195815 -16 2089  SP6FME JA7FTR RR73
195845 -15 2090  JR4FSG JA7FTR R-19 (x2)

80m

UTC    dB Audio  Message
203545  -1 2874  LZ1ZF JA7FTR QM08
203845  -2 2875  EA6Y JA7FTR QM08 (x2)
203930  -2 2011  JA7FTR EA6Y RR73
203945  -4 2875  EA6Y JA7FTR 73
204015  -8 2875  DL2MIJ JA7FTR -20 (x2)
204100  -3 2953  JA7FTR F4EGM JN29
204115  -5 2874  SV6AYW JA7FTR -16
204130  -4  826  JA7FTR DK7ZT +03
204145  -8 2874  SV6AYW JA7FTR -16
204200  -4  826  JA7FTR DK7ZT +03
204215  -7 2874  DK7ZT JA7FTR R-12
204230  -7  826  JA7FTR DK7ZT RR73
204245  -5 2874  DK7ZT JA7FTR 73

160m

UTC    dB Audio  Message
161315 -19 2256  JA7FTR UX1AA KO70 (x4)
200445 -17 2342  JA7FTR 4J3DJ RR73

20m

UTC    dB Audio  Message
133300  -6  453  JA7FTR F8KIC/P +02
133500  -5  909  JA7FTR F9SS JN18 (x4)

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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