YT5KD — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Serbia Most frequent locator attributed to this token: JN93

Receiver-side FT8 activity involving YT5KD, decoded by SO8OO in southeastern Poland. 114 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 11 UTC dates in the available aggregate history. Observed between 2026-07-13 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 114 FT8 messages attributed to YT5KD as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (34%), followed by 80 m (33%) and 40 m (32%). The busiest six-hour window was 04:00-10:00 UTC, containing 46% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

114

Messages attributed

UTC dates decoded

Active 15-min windows

-11 dB

Estimated median S/N

Bands

80m · 38 40m · 37 20m · 39

First attributed message: 2026-07-13
Last attributed message: 2026-08-30 04:07 UTC

Observed FT8 message patterns

Attributed sample: 114 messages
Active dates: 11 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -20 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 35, moderate (-15 to -9 dB) 29, 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 YT5KD in decoded directed-looking exchanges:

R7CD · European Russia ×2 YT2YZ · Serbia ×2 F4HMP · France A71UN · Qatar CN8NS · Morocco EA1IOK · Spain EA5D · Spain EA8UP · Canary Islands F1PBZ · France HZ1TT · Saudi Arabia IU4DTV · Italy K2TQC · 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 YT5KD

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: JN93 · 68 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 747 km (approx.)
Last such locator decoded: 2026-08-30 04:07 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	YT5KD S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-30 04:03	40m	-12 / -	KN4KYD	- / -	2	Partial capture
08-29 17:40	80m	-5 / -	IN3IZQ	- / -	3	Partial capture
08-29 06:03	20m	-2 / -	ZL2BX	- / -	3	Partial capture
08-29 05:58	20m	-8 / -	VK3JMA	- / -	7	Partial capture
08-29 05:55	20m	+2 / -	ZL2BX	- / -	2	Partial capture
08-28 19:13	20m	- / +6	EA8UP	+16 / -	2	✓ Closing fragment
08-07 04:28	20m	-17 / -	ZL1BQD	- / -	2	Partial capture
08-07 04:26	20m	-14 / -	UA0SM	- / -	2	Partial capture
08-06 18:31	80m	+1 / -16	UN8DSW	-20 / -20	6	✓ Full exchange observed
08-06 18:29	80m	-2 / -	UN3P	- / -	4	Partial capture
08-06 18:28	80m	-2 / -2	SV9MBH	-11 / -	4	✓ Closing observed
08-06 18:26	80m	+3 / -8	RC6OD	+8 / -4	5	✓ Full exchange observed
08-06 18:24	80m	-4 / -	RA4PKA	- / -	2	Partial capture
08-06 18:22	80m	-8 / -	UN3P	- / -	2	Partial capture
08-06 18:20	80m	-1 / -	R7CD	+7 / +8	3	✓ Closing observed
08-06 04:33	40m	-20 / -	OA4ENG	- / -2	2	Partial capture
08-06 04:23	40m	-20 / -	VO1IV	- / -17	3	✓ Closing fragment
08-06 04:14	20m	- / -3	N8HRZ	-6 / -	2	✓ Closing fragment
08-06 04:07	20m	- / -	UA4FKT	-5 / -	4	Partial capture
08-06 04:07	20m	- / -13	V31DL	-10 / -	3	✓ Closing fragment
08-06 03:38	20m	- / -1	N2BJ	0 / -	2	✓ Closing fragment
08-05 05:04	80m	-5 / -	HB10GBT	- / -	2	Partial capture
08-05 05:02	80m	-14 / -16	DO9KB	-8 / -2	7	✓ Full exchange observed
08-05 05:00	80m	-8 / -4	IQ4JO	0 / +7	4	✓ Full exchange observed
08-05 04:58	80m	-10 / -	EC3A	- / -5	3	✓ Closing fragment
08-05 04:56	80m	- / -	DO9BAU	+1 / -	8	Partial capture
08-05 04:54	80m	-3 / -	IV3FSG	+11 / -	3	✓ Closing observed
08-05 04:27	20m	- / +4	A71UN	-14 / -	2	✓ Closing fragment
08-03 10:57	20m	- / 0	F1PBZ	-15 / -	2	✓ Closing fragment
08-03 10:57	20m	- / -	IU2THY	-6 / -	3	Partial capture
08-03 10:57	20m	- / -	PC2J	-12 / -	2	Partial capture
08-02 14:19	20m	- / -17	M0PFX	-14 / -	2	Partial capture
08-02 03:47	20m	- / -10	K2TQC	-18 / -	2	✓ Closing fragment
08-02 03:39	20m	- / -14	K2TQC	-19 / -	2	Partial capture
07-22 08:05	20m	-12 / -	HZ1TT	- / 0	5	✓ Closing fragment
07-22 08:01	10m	- / -	F4HMP	-14 / -	2	✓ Closing fragment
07-21 15:54	20m	- / -	DL1UDO	-14 / -	3	Partial capture
07-14 19:59	40m	-8 / -10	ON5RJ	-14 / -6	7	Partial capture
07-14 19:59	40m	-13 / -7	SP4MPH	-3 / -6	2	Partial capture
07-14 19:56	40m	-6 / -	9A4AA	- / -	3	Partial capture
07-14 19:54	40m	-5 / -	IK4LZH	- / -	2	Partial capture
07-14 16:52	40m	-19 / -	YT2YZ	- / -	2	✓ Closing fragment
07-14 16:46	40m	-18 / -	UR3CFC	-8 / -	2	✓ Closing observed
07-14 16:45	40m	- / -16	DK7ZT	-17 / -	2	Partial capture
07-14 16:42	40m	-18 / -	YT2YZ	- / -3	2	✓ Closing fragment
07-14 16:41	40m	-18 / -7	UA3DPM	-8 / -14	5	✓ Full exchange observed
07-14 16:26	20m	- / -13	EA1IOK	-5 / -	3	✓ Closing fragment
07-13 18:43	20m	- / -7	RT4A	-12 / -	2	✓ Closing fragment
07-13 18:42	20m	- / -	DL1UDO	-12 / -	2	Partial capture
07-13 14:43	20m	-12 / -	OE8PIT	- / -2	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
042300 -19 1396  WC4H YT5KD JN93
042330 -20 1396  VO1IV YT5KD R-17 (x3)
042630 -21 1396  9A4ZM YT5KD +13
042830 -17 1396  F5PBG YT5KD RR73
043215 -20 1524  PP5GP YT5KD JN93
043315 -23 1728  OA4ENG YT5KD JN93 (x2)
043445 -18 1394  W4WFC YT5KD JN93
043615 -17 1538  PV8AJ YT5KD JN93
040130 -11 1581  PS8RV YT5KD JN93
040345 -12 1336  KN4KYD YT5KD JN93 (x2)
040730  -6 2446  KW4BY YT5KD JN93

80m

UTC    dB Audio  Message
182915  +0 1432  SV9MBH YT5KD 73
182945  +2 1646  UN3P YT5KD JN93 (x4)
183145  +3 2231  UN8DSW YT5KD JN93
183200 -20 2230  YT5KD UN8DSW -16
183215  +0 2230  UN8DSW YT5KD R-20 (x4)
173845 -11 1907  UA9UR YT5KD JN93
174030  -4 1573  IN3IZQ YT5KD JN93 (x3)

20m

UTC    dB Audio  Message
191345 +12  406  YT5KD EA8UP +06 (x2)
025030 -17 2136  YT5KD CN8NS RR73
055530  +4  897  ZL2BX YT5KD JN93 (x2)
055830  -7 1566  VK3JMA YT5KD JN93 (x7)
060330  +0  897  ZL2BX YT5KD JN93 (x3)

10m

UTC    dB Audio  Message
191845 -14 2256  YT5KD OE7LVI JN57 (x2)
191945  -3 1195  YT5KD DL6EL JN57
080100 -14 1464  YT5KD F4HMP +25 (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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