CT7BRV — 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: Portugal Most frequent locator attributed to this token: IM58

Receiver-side FT8 activity involving CT7BRV, decoded by SO8OO in southeastern Poland. 1,247 FT8 messages attributed to this token as transmitter, on 40m, 10m, across 5 UTC dates in the available aggregate history. Observed between 2026-10-19 and 2026-10-23.

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 1,247 FT8 messages attributed to CT7BRV as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (71%), followed by 10 m (29%). The busiest six-hour window was 23:00-05:00 UTC, containing 50% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (84%); the estimated median was -4 dB.

Overview

1,247

Messages attributed

UTC dates decoded

Active 15-min windows

-4 dB

Estimated median S/N

Bands

40m · 889 10m · 358

First attributed message: 2026-10-19
Last attributed message: 2026-10-23 16:37 UTC

Observed FT8 message patterns

Attributed sample: 1,247 messages
Active dates: 5 UTC dates
Estimated median S/N: -4 dB
Estimated 10th-90th percentile: -10 to +2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 10, moderate (-15 to -9 dB) 188, strong (≥ -8 dB) 1,049.

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 CT7BRV in decoded directed-looking exchanges:

IQ4JO · Italy ×7 SV8NAJ · Greece ×3 UA9SY · Asiatic Russia ×3 9A4ZM · Croatia ×2 DK4RH · Fed. Rep. of Germany ×2 F4FSY · France ×2 F4HKP · France ×2 HF5A · Poland ×2 OE6JVE · Austria ×2 R6FX · European Russia ×2 RW6HP · European Russia ×2 SP7TF · Poland ×2

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 CT7BRV

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: IM58 · 521 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,737 km (approx.)
Last such locator decoded: 2026-10-23 16:36 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	CT7BRV S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-23 16:35	10m	-10 / -	K3RH	- / -13	2	✓ Closing fragment
10-23 16:33	10m	-14 / -	KT5P	- / +5	3	✓ Closing fragment
10-23 16:31	10m	-11 / -	KK4GBK	- / -7	3	Partial capture
10-23 16:24	10m	-10 / -	W5DFD	- / -17	2	✓ Closing fragment
10-23 16:16	10m	-11 / -15	CR7BUJ	-16 / -17	3	✓ Full exchange observed
10-23 16:14	10m	-9 / -	OK1CMQ	- / -3	2	✓ Closing fragment
10-23 16:13	10m	-8 / -	NF3R	- / -7	2	✓ Closing fragment
10-23 16:12	10m	-10 / -	DD9BS	- / -3	2	✓ Closing fragment
10-23 16:10	10m	-8 / -	DL9XJ	- / -7	2	✓ Closing fragment
10-23 16:09	10m	-8 / -	DF8NY	- / -5	2	✓ Closing fragment
10-23 16:08	10m	-10 / -	DL7KI	- / -1	2	✓ Closing fragment
10-23 16:06	10m	-9 / -	DO9BAU	- / -11	2	✓ Closing fragment
10-23 16:05	10m	-10 / -	YO3GNF	- / -10	2	✓ Closing fragment
10-23 16:04	10m	-10 / -	LB5UK	- / -18	2	✓ Closing fragment
10-23 15:44	10m	+2 / -	C50A	- / -	4	Partial capture
10-23 15:38	10m	+6 / -	TL8GD	- / -4	2	Partial capture
10-23 15:35	10m	+3 / -	C91RU	-10 / -3	10	✓ Closing observed
10-23 15:23	10m	+10 / -	Z61DX	- / -	12	Partial capture
10-23 14:31	10m	0 / -	SG3A	- / -10	2	✓ Closing fragment
10-23 14:30	10m	-2 / -	YB5QZ	- / -12	2	✓ Closing fragment
10-23 14:25	10m	-4 / -	LZ1DD	- / -10	2	✓ Closing fragment
10-23 14:22	10m	-6 / -	IK8OZZ	- / -16	2	✓ Closing fragment
10-23 14:21	10m	-6 / -	LA2XNA	- / -11	2	✓ Closing fragment
10-23 14:17	10m	-6 / -	UR4UT	- / -9	2	✓ Closing fragment
10-23 14:15	10m	-9 / -	DG1KDD	- / -12	2	✓ Closing fragment
10-23 14:14	10m	-10 / -	YO9PH	- / 0	2	✓ Closing fragment
10-23 14:12	10m	-12 / -	HA4UC	- / -4	2	✓ Closing fragment
10-23 14:11	10m	-10 / -	IU7KEG	- / -2	2	✓ Closing fragment
10-23 14:10	10m	-8 / -	OM3DX	- / -1	2	✓ Closing fragment
10-23 14:06	10m	+1 / -	YO9HP	- / -14	3	✓ Closing fragment
10-23 14:04	10m	+3 / -	DK4RH	- / -14	3	✓ Closing fragment
10-23 14:03	10m	-2 / -	EU6MM	- / -11	2	✓ Closing fragment
10-23 14:00	10m	-3 / -	YU1EU	- / -16	3	✓ Closing fragment
10-23 13:59	10m	0 / -	SV7CFP	- / -1	2	✓ Closing fragment
10-23 13:57	10m	-2 / -	UX7QV	- / -6	2	✓ Closing fragment
10-23 13:54	10m	0 / -	N4EXA	- / -15	4	✓ Closing fragment
10-23 13:53	10m	+4 / -	EW1MN	- / -10	2	✓ Closing fragment
10-23 13:51	10m	+8 / -	SV8NAJ	- / -18	2	✓ Closing fragment
10-23 13:48	10m	+4 / -	F4IIX	- / -3	2	✓ Closing fragment
10-23 13:44	10m	+2 / -	HF5A	- / -7	2	✓ Closing fragment
10-23 13:43	10m	+1 / -	9A6R	- / 0	2	✓ Closing fragment
10-23 13:18	10m	- / -	EA7Z	-5 / -	2	Partial capture
10-23 13:16	10m	-17 / -	OE6JVE	- / -12	2	✓ Closing fragment
10-23 13:14	10m	-6 / -	R3DC	- / -9	3	✓ Closing fragment
10-23 13:12	10m	-1 / -	F1PSX	- / -17	2	✓ Closing fragment
10-23 13:11	10m	-5 / -	9A4ZM	- / -2	2	✓ Closing fragment
10-23 13:03	10m	0 / -	F1EKA	- / -13	4	Partial capture
10-23 13:00	10m	-2 / -	LY1MG	- / -14	2	✓ Closing fragment
10-23 12:59	10m	-1 / -	SP4MPH	- / -10	2	✓ Closing fragment
10-23 12:57	10m	-3 / -	LB7ZK	- / -8	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

10m

UTC    dB Audio  Message
162815 -13  837  HA5VQ CT7BRV RR73
162915 -13  837  PY2DDR CT7BRV RR73
163015 -13  837  KO4PYK CT7BRV RR73
163145 -12  837  KK4GBK CT7BRV -07 (x3)
163315 -15  837  KT5P CT7BRV +05 (x3)
163445 -14  837  CQ CT7BRV IM58 (x2)
163545 -10  837  K3RH CT7BRV -13 (x2)
163645  -8  837  CQ CT7BRV IM58
163715 -10  837  KG4IXS CT7BRV R-12

40m

UTC    dB Audio  Message
080115 -11 1863  CT7BRV OH3MB KP20 (x3)
080715  +2  356  CT7BRV DL3ND JN57
080715  -6  626  CT7BRV 4O4DB 73
080745  +1  356  CT7BRV DL3ND JN57 (x3)
081415  +0 2983  CT7BRV F4BYA JN19 (x3)
083715  -9  446  CT7BRV F4GUK JN18 (x2)
090145 -19 1785  CT7BRV ON7DE R-06 (x2)

80m

UTC    dB Audio  Message
233015  -2  633  CT7BRV UX7QV KN29 (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.

CW

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

Explore CW reception at SO8OO

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