KR4BQZ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EM74

Receiver-side FT8 activity involving KR4BQZ, decoded by SO8OO in southeastern Poland. 60 FT8 messages attributed to this token as transmitter, on 80m, 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-09-15.

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 60 FT8 messages attributed to KR4BQZ as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (98%), followed by 80 m (2%). Most decodes (100%) fell within the six-hour window 00:00-06:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -14 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-14 dB

Estimated median S/N

Bands

80m · 1 20m · 59

First attributed message: 2026-06-10
Last attributed message: 2026-09-15 04:41 UTC

Observed FT8 message patterns

Attributed sample: 60 messages
Active dates: 6 UTC dates
Estimated median S/N: -14 dB
Estimated 10th-90th percentile: -24 to -8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 27, moderate (-15 to -9 dB) 21, strong (≥ -8 dB) 12.

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 KR4BQZ in decoded directed-looking exchanges:

CR7BUJ · Portugal MI0FBI · Northern Ireland R6YY · European Russia RC6OG · European Russia SV1SSL · Greece TA2FE · Asiatic Turkey UR3LM · Ukraine UT7UJ · Ukraine DL3MIB · Fed. Rep. of Germany IK4LZH · Italy IU5AWQ · Italy LX1TI · Luxembourg

Most frequent locator attributed to KR4BQZ

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: EM74 · 15 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,198 km (approx.)
Last such locator decoded: 2026-08-27 05:08 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	KR4BQZ S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 05:01	80m	- / -8	EA1IOK	-15 / -	6	✓ Closing fragment
09-16 05:10	80m	- / -12	PA4PA	+1 / -	2	✓ Closing fragment
09-16 04:59	80m	- / -	IZ2QPP	-14 / -	4	Partial capture
09-16 04:59	80m	- / -15	F5RRS	-11 / -	3	✓ Closing fragment
09-15 04:52	80m	- / -1	DO1ID	+9 / -	3	Partial capture
09-15 04:48	80m	- / -13	IN3WZS	-3 / -	8	✓ Closing fragment
09-15 04:48	80m	- / -	PA3KUS	-6 / -	5	Partial capture
09-15 04:42	80m	- / -	DL1UDO	-4 / -	3	Partial capture
09-15 04:42	80m	- / -12	F1PBZ	-2 / -	11	✓ Closing fragment
09-15 04:41	80m	- / -	PA3KUS	-1 / -	5	Partial capture
09-14 05:38	80m	- / -25	ON7GB	-6 / -	4	✓ Closing fragment
08-30 23:50	40m	- / -	TT1GD	-12 / -	2	✓ Closing fragment
08-27 05:28	20m	- / -	DL1R	+5 / -	6	Partial capture
08-27 05:28	20m	- / -	RK4F	+12 / -	2	Partial capture
08-27 05:27	20m	- / -	RC6OG	-14 / -	2	✓ Closing fragment
08-27 05:26	20m	- / -25	SV1SSL	-6 / -	3	✓ Closing fragment
08-27 05:15	20m	- / -15	SV1SSL	-5 / -	2	Partial capture
08-27 05:02	20m	-18 / -13	EA5IT	-6 / -19	3	Partial capture
08-27 04:57	20m	-22 / -	LY1CX	- / -	2	Partial capture
08-24 00:27	40m	- / -	IK4LZH	+2 / -	3	Partial capture
08-24 00:24	40m	- / -7	DK7ZT	-23 / -	3	Partial capture
08-24 00:21	40m	- / -	PC2J	+6 / -	4	Partial capture
08-24 00:16	40m	- / -	EB1LA	+2 / -	2	Partial capture
08-23 04:35	20m	- / -21	UT7UJ	-3 / -	2	✓ Closing fragment
08-20 04:31	20m	- / -20	F1PBZ	+10 / -	4	Partial capture
08-08 00:23	40m	- / -19	IU5AWQ	-14 / -	2	✓ Closing fragment
08-07 04:09	40m	- / -6	PI4DX	0 / -	2	Partial capture
08-05 04:06	40m	- / -14	IK4LZH	-6 / -	3	✓ Closing fragment
08-04 04:30	60m	- / -	DL3MIB	-10 / -	9	Partial capture
07-29 01:48	40m	- / -16	DG4SCG	-1 / -	3	Partial capture
07-24 04:37	40m	- / -	DH1JG	-14 / -	3	Partial capture
07-24 04:28	40m	- / -	F4BYA	0 / -	4	Partial capture
07-24 04:15	40m	- / -	IK1QLD	-6 / -	2	Partial capture
07-13 04:14	40m	- / -	DL3MIB	-12 / -	2	✓ Closing fragment
07-13 04:13	40m	- / -18	S55DX	-13 / -	2	✓ Closing fragment
07-10 01:22	80m	- / 0	W4PSK	0 / -	2	✓ Closing fragment
06-30 02:11	60m	- / -	DL9KM	-15 / -	4	Partial capture
06-30 02:09	60m	- / -	9A4ZM	-3 / -	3	✓ Closing fragment
06-30 02:05	60m	- / -7	DK7ZT	-15 / -	3	Partial capture
06-30 02:05	60m	- / -	DL9KM	-17 / -	5	Partial capture
06-27 04:53	20m	- / -12	CR7BUJ	-14 / -	2	✓ Closing fragment
06-26 04:23	20m	- / -13	DL8TV	-22 / -	2	Partial capture
06-24 00:31	20m	- / -	F5PBG	-11 / -	4	Partial capture
06-24 00:27	20m	- / -2	MI0FBI	-3 / -	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
050000 -15  882  KR4BQZ IZ2QPP JN46
050000 -13 1949  KR4BQZ F5RRS 73
050030  -9  882  KR4BQZ IZ2QPP JN46 (x2)
051045  -1  260  KR4BQZ PA4PA -12 (x2)
044915  +4 2703  KR4BQZ F5OYM JN13
044915  +0  816  KR4BQZ EA2DYB IN83
045645  -8 2114  KR4BQZ DG0OBU -18
050100 -20  591  KR4BQZ EA1IOK IN62 (x6)

40m

UTC    dB Audio  Message
001630  +3 1069  KR4BQZ EB1LA IN73
002145  +9 1066  KR4BQZ PC2J JO22 (x4)
002415 -22 1906  KR4BQZ DK7ZT -07 (x3)
002745  +2  439  KR4BQZ IK4LZH JN54 (x3)
234300 -11  542  KR4BQZ W2/CT1GIF -16
235000 -11  445  KR4BQZ TT1GD RR73 (x2)
055945 -18 1904  KR4BQZ EA3BD R-22

20m

UTC    dB Audio  Message
051600  -2 1643  KR4BQZ SV1SSL R-15
052015 -17 1984  YO9HP KR4BQZ R-10
052630  -8  995  KR4BQZ SV1SSL KM18 (x2)
052700 -17 2257  KR4BQZ RC6OG KN98
052730  -3  995  KR4BQZ SV1SSL 73
052800 +12 1985  KR4BQZ RK4F LO23
052800  -3 2657  KR4BQZ DL1R JN58
052830 +13 1985  KR4BQZ RK4F LO23
052830 -12 2257  KR4BQZ RC6OG 73
052830  +4 2657  KR4BQZ DL1R JN58 (x5)

60m

UTC    dB Audio  Message
021045  -3 1750  KR4BQZ 9A4ZM 73
021145 -14 1738  KR4BQZ DL9KM JN68 (x4)
043045  -5 1003  KR4BQZ DL3MIB JN57 (x6)
043345 -16  884  KR4BQZ M5AEH -14
043345 -12 1003  KR4BQZ DL3MIB JN57 (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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