K4GDJ — 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: United States Most frequent locator attributed to this token: EL98

Receiver-side FT8 activity involving K4GDJ, decoded by SO8OO in southeastern Poland. 22 FT8 messages attributed to this token as transmitter, on 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-06-13.

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 22 FT8 messages attributed to K4GDJ as the transmitting token by decoded message structure across 3 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. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (95%); the estimated median was -19 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-19 dB

Estimated median S/N

Bands

20m · 22

First attributed message: 2026-06-07
Last attributed message: 2026-06-13 00:55 UTC

Observed FT8 message patterns

Attributed sample: 22 messages
Active dates: 3 UTC dates
Estimated median S/N: -19 dB
Estimated 10th-90th percentile: -21 to -17 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 21, moderate (-15 to -9 dB) 1, strong (≥ -8 dB) 0.

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 K4GDJ in decoded directed-looking exchanges:

5B4AMX · Cyprus CT7BRV · Portugal F5PBG · France F6DZU · France F6HUK · France G0BLB · England HI8ML · Dominican Republic LZ2IP · Bulgaria SV1BLD · Greece W2CG · United States N1TQP · United States

Most frequent locator attributed to K4GDJ

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: EL98 · 7 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,464 km (approx.)
Last such locator decoded: 2026-06-13 00:54 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	K4GDJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-03 01:17	40m	- / -8	W2CG	-22 / -	3	✓ Closing fragment
11-02 07:20	40m	- / -20	DL5RDP	+17 / -	2	Partial capture
11-02 07:13	40m	- / -17	IK2SAR	-20 / -	2	Partial capture
11-02 06:51	40m	- / -	OE9DAI	+5 / -	6	Partial capture
11-02 06:48	40m	- / -25	G0BLB	-4 / -	2	✓ Closing fragment
11-02 06:41	40m	- / -24	9A2CD	-1 / -	4	Partial capture
11-02 06:17	40m	- / -18	DJ0MAB	+2 / -	2	Partial capture
11-02 05:46	40m	- / -	IZ2QPP	+3 / -	2	Partial capture
11-02 05:36	40m	- / -19	F6HUK	-8 / -	2	✓ Closing fragment
11-02 05:30	40m	- / -18	F6DZU	+1 / -	3	✓ Closing fragment
11-02 05:19	40m	- / -	ME7IEB	-9 / -	2	Partial capture
11-02 05:04	40m	- / -14	LZ2IP	+2 / -	2	✓ Closing fragment
11-02 04:46	40m	- / -	HB9TIH	-12 / -	5	Partial capture
11-02 04:35	40m	- / -15	SV1DKR	-9 / -	4	Partial capture
11-02 04:20	40m	- / -7	CT7BRV	-18 / -	2	✓ Closing fragment
11-02 03:59	40m	- / -11	5B4AMX	+5 / -	4	✓ Closing fragment
11-02 03:38	40m	- / -21	SV1BLD	+14 / -	5	✓ Closing fragment
11-02 03:07	40m	- / -	SV1BLD	+12 / -	2	Partial capture
10-29 23:47	40m	- / -	UA4FKT	+9 / -	3	Partial capture
10-28 02:41	40m	- / -10	F5PBG	-2 / -	4	✓ Closing fragment
10-27 21:58	40m	- / -	LB7ZG	0 / -	2	Partial capture
10-27 21:51	40m	- / -	DL3MIB	-13 / -	4	Partial capture
10-24 23:13	40m	- / -12	ON1JP	-20 / -	4	Partial capture
09-16 00:01	80m	- / -11	N1TQP	-3 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
065200  +3 2331  K4GDJ OE9DAI JN47 (x5)
070230 -19 2269  K4GDJ F5SZB IN95
071300 -21 1746  K4GDJ IK2SAR -17 (x2)
072000 +16 2931  K4GDJ DL5RDP -20 (x2)
074800 -18 2268  K4GDJ F5SZB IN95
011745 -24 1789  K4GDJ W2CG R-08 (x3)
013745 -13 2479  K4GDJ HI8ML 73

80m

UTC    dB Audio  Message
000100  -3  504  K4GDJ N1TQP -11 (x2)

CW

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

Explore CW reception at SO8OO

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