7Z1DJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Saudi Arabia Most frequent locator attributed to this token: LL46

Receiver-side FT8 activity involving 7Z1DJ, decoded by SO8OO in southeastern Poland. 213 FT8 messages attributed to this token as transmitter, on 20m, 10m, across 12 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-08-30.

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 213 FT8 messages attributed to 7Z1DJ as the transmitting token by decoded message structure across 12 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (98%), followed by 10 m (2%). Most decodes (94%) fell within the six-hour window 20:00-02:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.

Overview

213

Messages attributed

UTC dates decoded

Active 15-min windows

-13 dB

Estimated median S/N

Bands

20m · 208 10m · 5

First attributed message: 2026-06-08
Last attributed message: 2026-08-30 22:16 UTC

Observed FT8 message patterns

Attributed sample: 213 messages
Active dates: 12 UTC dates
Estimated median S/N: -13 dB
Estimated 10th-90th percentile: -21 to -4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 72, moderate (-15 to -9 dB) 91, strong (≥ -8 dB) 50.

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 7Z1DJ in decoded directed-looking exchanges:

KK4TE · United States ×2 5Z4VJ · Kenya AA3B · United States EA5HM · Spain KA1MXL · United States KA1O · United States KA2AYR · United States KB3Z · United States KC1MMC · United States KC1UBT · United States KE4EB · United States KN4MKX · United States

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 7Z1DJ

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: LL46 · 110 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 3,489 km (approx.)
Last such locator decoded: 2026-08-30 22:16 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	7Z1DJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-08 22:30	40m	- / -19	EA1DSK	-4 / -	6	Partial capture
08-30 22:13	20m	- / -	UB3FBJ	-17 / -	2	Partial capture
08-30 21:52	20m	-10 / -	KA2AYR	-18 / -14	3	✓ Closing observed
08-30 21:51	20m	-10 / -	W3SAL	-17 / -20	4	Partial capture
08-30 21:50	20m	- / -18	G8GDS	-15 / -	2	Partial capture
08-30 21:45	20m	- / -	K1QD	-13 / -	6	Partial capture
08-30 21:33	20m	- / -15	W1KDA	-14 / -	4	✓ Closing fragment
08-29 23:52	20m	-22 / -	NA4EB	- / -22	2	✓ Closing fragment
08-29 23:47	20m	-18 / -	WM4W	- / -8	4	Partial capture
08-29 23:41	20m	-22 / -	KE4EB	- / -2	6	✓ Closing fragment
08-29 23:30	20m	-20 / -	KZ4NS	- / -10	3	✓ Closing fragment
08-29 23:28	20m	-18 / -	WC0M	- / -11	2	✓ Closing fragment
08-29 23:20	20m	-20 / -	KE4EB	- / +3	2	Partial capture
08-29 01:23	20m	- / -11	KQ4W	-13 / -	3	✓ Closing fragment
08-29 01:21	20m	- / -	F5RRS	-22 / -	2	Partial capture
08-29 01:17	20m	-15 / -	VA3VV	- / -8	2	✓ Closing fragment
08-29 01:08	20m	- / -	EA4GHH	+14 / -	2	Partial capture
08-29 01:02	20m	-14 / -4	WE8W	-18 / -19	3	Partial capture
08-29 01:01	20m	- / -14	TI2FAF	-8 / -	2	Partial capture
08-29 00:53	20m	- / -	EA4GHH	+14 / -	4	Partial capture
08-29 00:53	20m	-15 / -	KC1MMC	-16 / -	5	✓ Closing observed
08-29 00:50	20m	- / -	F5RRS	-23 / -	2	Partial capture
08-28 23:08	20m	-7 / -	KA1O	-11 / -6	3	✓ Closing observed
08-28 23:05	20m	-9 / -	KC1YTV	- / -13	5	Partial capture
08-28 22:56	20m	+5 / -20	KQ4NAQ	-16 / -	6	✓ Closing observed
08-28 22:41	20m	- / -5	K1RI	-3 / -	8	Partial capture
08-28 22:41	20m	- / -12	G8GDS	-13 / -	3	Partial capture
08-28 21:45	20m	-10 / -	KD1BA	- / -6	4	Partial capture
08-28 21:44	20m	- / -	IW3BYL	-21 / -	2	Partial capture
08-28 21:42	20m	- / -	F5RRS	+3 / -	5	Partial capture
08-28 21:13	20m	- / -	F5RRS	-7 / -	5	Partial capture
08-28 21:11	20m	-14 / -6	KB3Z	-10 / -	6	✓ Closing observed
08-28 21:04	20m	- / -	DL1ERZ	-12 / -	6	Partial capture
08-28 20:54	20m	- / -	PD2V	+2 / -	2	Partial capture
08-28 20:50	20m	- / -	DH2RL	+2 / -	4	Partial capture
08-28 20:49	20m	- / -	F5RRS	-6 / -	5	Partial capture
08-27 20:47	20m	- / -	EA7LGM	+8 / -	5	Partial capture
08-27 20:42	20m	- / -11	OE9GWV	+3 / -	5	✓ Closing fragment
08-27 20:41	20m	- / -	DL3MIB	+9 / -	7	Partial capture
08-27 20:40	20m	- / -	DL6NAC	+3 / -	3	Partial capture
08-27 20:25	20m	- / -	OE9GWV	-8 / -	2	Partial capture
08-27 20:23	20m	- / -	DL3MIB	+2 / -	7	Partial capture
08-27 20:23	20m	- / -	F4ACR	+6 / -	7	Partial capture
08-27 03:28	20m	-6 / -	XQ1KK	- / -	2	Partial capture
08-27 02:47	20m	- / -	NE5TX	-14 / -	8	Partial capture
08-27 01:20	20m	-16 / -	WA4UVH	- / -11	3	✓ Closing fragment
08-27 01:14	20m	-15 / -	K3JSJ	- / -14	5	Partial capture
08-27 01:13	20m	-12 / +2	KK4TE	+6 / +5	4	✓ Full exchange observed
08-27 01:11	20m	-3 / -	HI3QMT	- / -	3	Partial capture
08-27 00:44	20m	- / -	K1LDO	-19 / -	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
214415 -18 2078  7Z1DJ PI4TX JO22 (x2)
222915  -8 2515  7Z1DJ UX1VT KN68
223045  -5 1889  7Z1DJ EA1DSK -19 (x6)

20m

UTC    dB Audio  Message
215200 -18 1530  7Z1DJ KA2AYR EL99
215230 -19 1749  7Z1DJ W3SAL FM19
215245  -7 1833  KA2AYR 7Z1DJ -14 (x2)
215345 -10 1834  W3SAL 7Z1DJ -20
215645 -18 1834  CQ NA 7Z1DJ LL46 (x3)
221315 -18 1921  7Z1DJ UB3FBJ KO85
221330 -15 1902  CQ NA 7Z1DJ LL46
221345 -16 1921  7Z1DJ UB3FBJ KO85
221400 -10 1902  CQ NA 7Z1DJ LL46 (x4)

10m

UTC    dB Audio  Message
124445  -5  744  5Z4VJ 7Z1DJ LL46 (x4)
124700 -18 2383  7Z1DJ PI4DX JO21 (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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