PT7YV — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Brazil Most frequent locator attributed to this token: HI06

Receiver-side FT8 activity involving PT7YV, decoded by SO8OO in southeastern Poland. 1,175 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 42 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-08.

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 1,175 FT8 messages attributed to PT7YV as the transmitting token by decoded message structure across 42 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (48%), followed by 20 m (31%) and 80 m (13%). Most decodes (77%) fell within the six-hour window 22:00-04:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (70%); the estimated median was -3 dB.

Overview

1,175

Messages attributed

UTC dates decoded

144

Active 15-min windows

-3 dB

Estimated median S/N

Bands

80m · 148 40m · 563 20m · 362 10m · 102

First attributed message: 2026-06-06
Last attributed message: 2026-10-08 01:56 UTC

Observed FT8 message patterns

Attributed sample: 1,175 messages
Active dates: 42 UTC dates
Estimated median S/N: -3 dB
Estimated 10th-90th percentile: -16 to +4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 122, moderate (-15 to -9 dB) 231, strong (≥ -8 dB) 822.

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 PT7YV in decoded directed-looking exchanges:

UB4PIR · European Russia ×2 ZY7F · Brazil ×2 P5TIH · DPR of Korea ×2 LZ6C · Bulgaria ×2 R3RB · European Russia ×2 RG6ZF · European Russia ×2 RW9AW · Asiatic Russia ×2 SP5EXA · Poland ×2 DO1ID · Fed. Rep. of Germany ×2 DF2IAC · Fed. Rep. of Germany DK8EE · Fed. Rep. of Germany DO1SWC · Fed. Rep. of Germany

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 PT7YV

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: HI06 · 406 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,287 km (approx.)
Last such locator decoded: 2026-10-08 01:55 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	PT7YV S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-08 01:54	40m	-12 / -	KG0US	- / -9	5	✓ Closing fragment
10-08 01:52	40m	-12 / -	UW8SM	- / -19	2	✓ Closing fragment
10-08 01:50	40m	-12 / -	ON2VHF/P	- / -16	2	Partial capture
10-08 01:48	40m	-12 / -	W4KWS	- / -21	2	✓ Closing fragment
10-08 01:46	40m	-11 / -	WB8JUI	- / -16	3	✓ Closing fragment
10-08 01:41	40m	-19 / -	RA2FCF	- / -18	3	✓ Closing fragment
10-04 23:40	40m	0 / -	A99AA	-6 / -23	5	✓ Closing observed
10-04 13:52	10m	-20 / -	RM4N	- / -18	2	✓ Closing fragment
10-04 13:50	10m	-22 / -	UA6J	- / -17	2	✓ Closing fragment
10-04 11:52	10m	-10 / -	YO9FYD	- / -3	2	✓ Closing fragment
10-04 11:50	10m	-10 / -	YO3AF	- / -16	2	✓ Closing fragment
10-04 11:49	10m	-10 / -	UT6HN	- / -12	2	✓ Closing fragment
10-04 11:48	10m	-12 / -	F5MYK	- / 0	2	✓ Closing fragment
10-04 11:40	10m	-5 / -	R6SBN	- / -18	2	✓ Closing fragment
10-04 11:38	10m	-4 / -	UB4PIR	- / -13	2	✓ Closing fragment
10-04 11:34	10m	-6 / -	3B8HE	- / -	2	Partial capture
10-04 02:09	40m	- / -14	RA3TKS	-2 / -	4	Partial capture
10-04 02:07	40m	-1 / -	N2CB	- / -12	2	✓ Closing fragment
10-04 02:04	40m	0 / -	KU5DX	- / -	4	Partial capture
10-04 01:59	40m	-1 / -	KB5JRC	- / -8	3	✓ Closing fragment
10-04 01:46	40m	0 / -4	WZ8S	-4 / -3	5	✓ Full exchange observed
10-04 01:45	40m	-2 / -	KI5DXY	- / -11	2	✓ Closing fragment
10-04 01:42	40m	0 / -	VE3ODR	- / -14	2	✓ Closing fragment
10-04 01:38	40m	-2 / -	KZ4MW	- / -13	2	✓ Closing fragment
10-04 01:36	40m	-2 / -	HF5A	- / -15	2	✓ Closing fragment
10-04 01:34	40m	-1 / -	RD3FY	- / -15	3	✓ Closing fragment
10-04 01:33	40m	-2 / -	KR4HBQ	- / -12	2	✓ Closing fragment
10-04 01:32	40m	0 / -	UN7DCS	- / -16	2	✓ Closing fragment
10-04 01:29	40m	-2 / -	CM7DJG	- / -14	3	✓ Closing fragment
10-04 01:27	40m	-1 / -	WI4B	- / -5	3	✓ Closing fragment
10-04 00:58	40m	-1 / -	3Z4DX	-11 / -11	4	✓ Closing observed
10-04 00:56	40m	-1 / +7	GM7JQK	-10 / -18	6	✓ Full exchange observed
10-04 00:54	40m	-4 / -	IU2SLI	- / -14	3	✓ Closing fragment
10-04 00:52	40m	-4 / -	PY7AN	- / -8	2	✓ Closing fragment
10-04 00:51	40m	-6 / -	W3EWL	- / -15	2	✓ Closing fragment
10-04 00:50	40m	- / -15	HK3AB	-18 / -	3	Partial capture
10-04 00:50	40m	- / -	R4PFU	-16 / -	2	Partial capture
10-04 00:48	40m	-4 / -	KG9OH	- / -12	2	✓ Closing fragment
10-04 00:47	40m	-3 / -	W4PPC	- / -12	2	✓ Closing fragment
10-04 00:42	40m	-6 / -	YO2MKE	- / -18	2	✓ Closing fragment
10-04 00:41	40m	- / -	TA2EE	-15 / -	3	Partial capture
10-04 00:39	40m	0 / -	II5GG	- / -23	3	✓ Closing fragment
10-02 00:44	40m	- / -	RZ4FWA	-19 / -	3	Partial capture
10-02 00:42	40m	-14 / -	C5R	- / -19	4	✓ Closing fragment
10-01 00:08	40m	- / -	RA4ABH	-5 / -	3	Partial capture
10-01 00:06	40m	-10 / -	NA4GB	- / -	3	✓ Closing fragment
10-01 00:03	40m	-10 / -	K8DID	- / -16	3	✓ Closing fragment
10-01 00:01	40m	- / -	IU8RFW	-7 / -	2	Partial capture
09-30 23:56	40m	- / -	RZ4FWA	-16 / -	2	Partial capture
09-30 23:55	40m	-10 / -	WV2B	- / -8	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
014600 -11 1923  WB8JUI PT7YV -16 (x3)
014830 -12 1923  W4KWS PT7YV -21 (x2)
015015 -12 1924  ON2VHF/P PT7YV HI06 (x2)
015215 -12 1923  CQ PT7YV HI06
015245 -12 1924  UW8SM PT7YV -19 (x2)
015430 -12 1924  KG0US PT7YV HI06 (x5)

10m

UTC    dB Audio  Message
114900 -10 2512  F5MYK PT7YV RR73
114930 -10 2512  UT6HN PT7YV R-12 (x2)
115030  -8 2512  YO3AF PT7YV -16 (x2)
115200 -11 2512  YO9FYD PT7YV R-03 (x2)
115430 -10 2512  RC7LX PT7YV R-19
115730 -14 2512  BA5AN PT7YV -10
135000 -20 1438  UA6J PT7YV R-17 (x2)
135200 -19 1438  RM4N PT7YV R-18 (x2)
141415 -23 1438  PT7BI PT7YV R-03
141615 -20 1438  UR3VKB PT7YV R-11

80m

UTC    dB Audio  Message
021100  +1 2571  PT7YV OK1UOZ JO70
021100 -14 1451  PT7YV DL7FE JN49
021115 -13 2570  CQ PT7YV HI06
021130 +10 2571  PT7YV OK1UOZ JO70
021200 -10 1451  PT7YV DL7FE JN49
021215 -15 2571  W5MMW PT7YV -24
021630  +2 2571  PT7YV IZ5NRF JN53
021700  +9 2570  PT7YV OK1UOZ JO70
021745 -15 2570  RW9AW PT7YV -20
021800  +7 2571  PT7YV OK1UOZ JO70
021815 -16 2569  RW9AW PT7YV RR73
021830  +6 2571  PT7YV OK1UOZ JO70 (x4)

20m

UTC    dB Audio  Message
221530  -1 2819  K3SAE PT7YV RR73
221600  +0 2819  BG5JGG PT7YV -23 (x3)
221915  -1 2819  LY7T PT7YV HI06 (x3)
222215  +0 2819  JA5CPJ PT7YV R-20 (x2)
222615  -4 2819  BG5JGG PT7YV -17 (x5)
201030  +4 1340  PY2XAT PT7YV HI06

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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