DJ7ZZ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO30

Receiver-side FT8 activity involving DJ7ZZ, decoded by SO8OO in southeastern Poland. 40 FT8 messages attributed to this token as transmitter, on 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-07-18 and 2026-08-28.

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 40 FT8 messages attributed to DJ7ZZ as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). 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 -15 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-15 dB

Estimated median S/N

Bands

20m · 40

First attributed message: 2026-07-18
Last attributed message: 2026-08-28 05:29 UTC

Observed FT8 message patterns

Attributed sample: 40 messages
Active dates: 4 UTC dates
Estimated median S/N: -15 dB
Estimated 10th-90th percentile: -20 to -9 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 19, moderate (-15 to -9 dB) 17, strong (≥ -8 dB) 4.

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 DJ7ZZ in decoded directed-looking exchanges:

V31DL · Belize ×2 EA5HM · Spain F4LNM · France IK4TVP · Italy JY5IB · Jordan KJ5DQB · United States LU6HOG · Argentina NA6JD · United States R2AL · European Russia RN6MA · European Russia SP6FME · Poland UA3VVA · European Russia

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 DJ7ZZ

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: JO30 · 7 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,053 km (approx.)
Last such locator decoded: 2026-08-16 06:03 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	DJ7ZZ S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-30 05:35	20m	- / -5	UA3VVA	-1 / -	3	✓ Closing fragment
08-28 05:28	20m	-11 / -	NA6JD	- / -2	4	✓ Closing fragment
08-28 04:57	20m	- / -13	F4LNM	-8 / -	2	✓ Closing fragment
08-26 20:18	20m	- / -	EA5HM	0 / -	4	✓ Closing fragment
08-16 06:08	20m	-19 / -	VK6BAD	- / -11	2	Partial capture
08-16 06:01	20m	-19 / -	YO4SX	- / -5	3	✓ Closing fragment
08-16 05:55	20m	- / -11	R6OEY	-18 / -	2	Partial capture
08-16 05:38	20m	-19 / -	JY5IB	- / +3	2	✓ Closing fragment
08-09 06:14	20m	- / -18	IZ8EDI	-18 / -	2	Partial capture
07-18 05:04	20m	-16 / -	IK4TVP	- / 0	2	✓ Closing fragment
07-18 05:02	20m	- / -	F4IIX	+2 / -	3	Partial capture
07-18 05:01	20m	-13 / -11	RN6MA	-20 / -7	4	✓ Full exchange observed
07-18 04:58	20m	-10 / -	R2AL	+1 / -	5	✓ Full exchange observed
07-18 04:55	20m	-13 / -	UA4FKT	-17 / -15	5	Partial capture
07-18 04:51	20m	-19 / -	SP6FME	- / -	2	✓ Closing fragment
07-18 04:47	20m	-14 / -14	V31DL	-20 / -11	10	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
201930  +0 1250  DJ7ZZ EA5HM IM99 (x2)
045700  -5 1543  DJ7ZZ F4LNM R-13 (x2)
045800 -18 1542  DJ7ZZ PD3LKN JO22
051330  -5 1542  LU6HOG DJ7ZZ RR73
051945  +0 1542  VK4VCC DJ7ZZ RR73
052015  -5 1542  VK3JV DJ7ZZ -14
052800 -12 1542  NA6JD DJ7ZZ -02 (x4)
053545  -2 1660  DJ7ZZ UA3VVA LO06 (x3)

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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