7Z1DH — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Saudi Arabia Most frequent locator attributed to this token: LL24

Receiver-side FT8 activity involving 7Z1DH, decoded by SO8OO in southeastern Poland. 325 FT8 messages attributed to this token as transmitter, on 80m, 20m, 10m, across 12 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-10-03.

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 325 FT8 messages attributed to 7Z1DH as the transmitting token by decoded message structure across 12 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (57%), followed by 10 m (29%) and 20 m (14%). Most decodes (62%) fell within the six-hour window 18:00-00:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -15 dB.

Overview

325

Messages attributed

UTC dates decoded

Active 15-min windows

-15 dB

Estimated median S/N

Bands

80m · 186 20m · 45 10m · 94

First attributed message: 2026-06-11
Last attributed message: 2026-10-03 02:46 UTC

Observed FT8 message patterns

Attributed sample: 325 messages
Active dates: 12 UTC dates
Estimated median S/N: -15 dB
Estimated 10th-90th percentile: -21 to -10 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 151, moderate (-15 to -9 dB) 147, strong (≥ -8 dB) 27.

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 7Z1DH in decoded directed-looking exchanges:

9A3K · Croatia ×2 R7ZY · European Russia ×2 HB9EFK · Switzerland ×2 IK6DLK · Italy ×2 LZ1EV · Bulgaria ×2 OK1YQ · Czech Republic ×2 RX6DA · European Russia ×2 DN9OY · Fed. Rep. of Germany EA5JTT · Spain ER3UA · Moldova F4CSG · France HA0AA · Hungary

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 7Z1DH

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: LL24 · 105 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 3,466 km (approx.)
Last such locator decoded: 2026-09-30 13:52 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	7Z1DH S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-03 21:39	80m	- / -	IW2MYH	-11 / -	2	Partial capture
10-03 21:32	80m	- / -	YO3YV	+4 / -	6	Partial capture
10-03 03:18	80m	- / -15	WA1J	-4 / -	2	✓ Closing fragment
10-03 03:04	80m	- / -	G3YPP	-5 / -	9	Partial capture
10-03 03:03	80m	- / -14	UA7N	0 / -	2	✓ Closing fragment
10-03 03:03	80m	- / -	US2YW	+13 / -	2	Partial capture
10-03 03:01	80m	- / -	R7DX	+10 / -	4	Partial capture
10-03 03:00	80m	- / -26	RN1CW	0 / -	11	✓ Closing fragment
10-03 02:59	80m	- / -16	DL6ZFG	-6 / -	2	Partial capture
10-03 02:58	80m	- / -19	AA6KJ	-17 / -	3	Partial capture
10-03 02:58	80m	- / -8	UT5ECZ	+1 / -	3	Partial capture
10-03 02:47	80m	- / -18	DL6ZFG	-1 / -	2	Partial capture
10-03 02:46	80m	- / -	DC7LR	+1 / -	21	Partial capture
10-03 02:45	80m	-12 / -7	DL1HRN	+9 / -6	4	✓ Full exchange observed
10-03 02:45	80m	- / -	DL5DQZ	+1 / -	6	Partial capture
10-03 02:45	80m	- / -	DO4DXA	+7 / -	4	Partial capture
10-03 02:40	80m	- / -	G3YPP	-7 / -	7	Partial capture
10-03 02:40	80m	- / -	DO4DXA	+10 / -	4	Partial capture
10-03 02:38	80m	-10 / -11	LZ1EV	+6 / -	4	✓ Closing observed
10-03 02:34	80m	- / -	DO5AX	-20 / -	4	Partial capture
10-03 02:34	80m	- / -11	VE3DZ	-11 / -	7	✓ Closing fragment
10-03 02:34	80m	- / -	DO4DXA	+14 / -	4	Partial capture
10-03 02:34	80m	- / -6	LZ1EV	+2 / -	2	Partial capture
10-03 02:31	80m	-12 / -	N0ATQ	-9 / -18	3	Partial capture
10-03 02:27	80m	- / -	DG1YHP	+2 / -	2	Partial capture
10-03 02:27	80m	-11 / -18	ES2DR	+3 / -	8	✓ Closing observed
10-03 02:27	80m	- / -14	OK1BLU	+10 / -	5	✓ Closing fragment
10-03 02:24	80m	- / -	IZ1ANU	0 / -	2	Partial capture
10-03 02:21	80m	- / -13	UR4LBG	-7 / -	3	✓ Closing fragment
10-03 02:19	80m	- / -11	N4QS	-16 / -	4	✓ Closing fragment
10-03 02:16	80m	- / -	DO5AX	-7 / -	3	Partial capture
10-03 02:15	80m	- / -16	R9RA	-8 / -	2	Partial capture
10-03 02:13	80m	- / -	DK8HC	+1 / -	5	Partial capture
10-03 02:13	80m	- / -15	SP3BP	+8 / -	3	✓ Closing fragment
10-03 02:11	80m	- / -19	ON1JP	-7 / -	3	Partial capture
10-03 02:11	80m	- / -	DO5AX	-14 / -	4	Partial capture
10-03 02:11	80m	- / -	DO5PY	+1 / -	3	Partial capture
10-03 02:11	80m	- / -6	RN6HK	-4 / -	2	Partial capture
10-03 02:09	80m	- / -	G3YPP	-7 / -	7	Partial capture
10-03 02:09	80m	- / -8	UT3UZ	+2 / -	3	✓ Closing fragment
10-03 02:08	80m	- / -14	RA6ABC	+3 / -	3	✓ Closing fragment
10-03 02:06	80m	- / -3	UT2UB	-3 / -	3	✓ Closing fragment
10-03 02:04	80m	- / -	MI7XHT	-4 / -	5	Partial capture
10-03 02:04	80m	- / -14	R9RA	-14 / -	9	Partial capture
10-03 02:02	80m	- / -2	OH1LEG	+3 / -	5	✓ Closing fragment
10-03 02:01	80m	- / -16	IK6GTF	-6 / -	3	✓ Closing fragment
10-03 01:59	80m	- / -	EA7LIC	-13 / -	4	✓ Closing fragment
10-03 01:59	80m	- / -	G1CEC	-8 / -	2	Partial capture
09-30 13:51	10m	-16 / -	PD8MD	- / -13	2	✓ Closing fragment
09-30 13:50	10m	-18 / -	ZS6RR	- / -	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
030615  -5  968  7Z1DH G3YPP JO02 (x5)
031815  -8  659  7Z1DH WA1J -15 (x2)
213200  +0  565  7Z1DH YO3YV KN34 (x6)
213930 -14  832  7Z1DH IW2MYH JN45 (x2)

10m

UTC    dB Audio  Message
134300 -16 2094  SQ9OE 7Z1DH -12
134400 -19 2094  EA3DU 7Z1DH -09
134500 -17 2094  RW3DBX 7Z1DH -11 (x2)
134630 -18 2094  SP5IDR 7Z1DH -14 (x2)
134800 -21 2093  N2NDV 7Z1DH RR73
135000 -20 2094  ZS6RR 7Z1DH RR73 (x2)
135100 -18 2094  PD8MD 7Z1DH -13 (x2)
135200 -23 2094  CQ 7Z1DH LL24
135230 -17 2094  IK1RQX 7Z1DH -07
135330 -20 2094  EA5IAG 7Z1DH R-06
135930 -20 2093  EC2AHS 7Z1DH -01

40m

UTC    dB Audio  Message
233115  -3  438  7Z1DH IK4LZH JN54 (x2)
203200 +10 2612  7Z1DH R7ZY KN98 (x3)
221300 -11 2346  7Z1DH RD3FY 73
222230 -16 1540  7Z1DH IK1DFH JN33 (x2)
223430 -23 1540  7Z1DH PD7LJ JO21 (x5)
225130 -13 2028  7Z1DH RZ4FWA LO23 (x2)

20m

UTC    dB Audio  Message
204000  -7 1597  7Z1DH EA3AAY R-11
204015 -14 1578  EA3AAY 7Z1DH RR73
204030 -11 1597  7Z1DH EA3AAY 73
204100  -3  964  7Z1DH EA3IE JN01 (x3)
204215 -12 1578  EA7L 7Z1DH R-10
204230 -13 1578  7Z1DH W1RQ FN42
204245 -12 1578  EA7L 7Z1DH 73
204315 -17 1578  CQ 7Z1DH LL24
205330 -18 1579  7Z1DH W1RQ R-20 (x5)

160m

UTC    dB Audio  Message
232045 -16 1496  7Z1DH DC8SG JO40

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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