OH7XR — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Finland Most frequent locator attributed to this token: KP53

Receiver-side FT8 activity involving OH7XR, decoded by SO8OO in southeastern Poland. 30 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-08-06 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 30 FT8 messages attributed to OH7XR 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 (50%), followed by 20 m (50%). Several six-hour UTC windows tied for the largest share (63%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-9 dB

Estimated median S/N

Bands

40m · 15 20m · 15

First attributed message: 2026-08-06
Last attributed message: 2026-09-15 17:09 UTC

Observed FT8 message patterns

Attributed sample: 30 messages
Active dates: 5 UTC dates
Estimated median S/N: -9 dB
Estimated 10th-90th percentile: -13 to 0 dB
Recurring-pattern threshold: Met

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

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 OH7XR in decoded directed-looking exchanges:

4L7T · Georgia 4X1UF · Israel DH2YBG · Fed. Rep. of Germany E70SZ · Bosnia-Herzegovina PD3LKN · Netherlands RN6MA · European Russia SV7BAY · Greece UR5VPR · Ukraine 9A1CCB · Croatia DA1ST · Fed. Rep. of Germany HA7TM · Hungary PA2KV · Netherlands

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 OH7XR

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: KP53 · 15 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,606 km (approx.)
Last such locator decoded: 2026-09-15 17:06 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	OH7XR S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-15 17:08	40m	- / 0	SP5MXZ	+5 / -	5	Partial capture
09-15 17:07	40m	-13 / -	SQ5WBW/P	- / -14	4	✓ Closing fragment
09-15 17:06	40m	-12 / -4	UX5UW	+9 / -	4	✓ Full exchange observed
09-15 17:03	40m	- / -	YO6LM	+10 / -	2	Partial capture
09-15 17:02	40m	-12 / -9	HA7TM	+15 / -	4	✓ Closing observed
09-15 16:58	40m	- / -7	9A1CCB	+14 / -	4	✓ Closing fragment
09-12 08:54	40m	- / -11	DM5KM	+2 / -	5	Partial capture
09-12 08:53	40m	- / -11	DA1ST	-2 / -	3	✓ Closing fragment
09-12 08:53	40m	- / -10	OZ1JMJ	-18 / -	2	Partial capture
09-12 08:50	40m	- / -	PA2RO	-12 / -	2	Partial capture
09-12 08:48	40m	- / -17	PA2KV	-4 / -	3	✓ Closing fragment
08-30 06:59	40m	-6 / -1	DK2M	+8 / -	4	Partial capture
08-30 06:59	40m	-5 / -3	DJ0MAB	-8 / -15	5	Partial capture
08-30 06:57	40m	-10 / 0	SP9W	+7 / 0	4	✓ Full exchange observed
08-30 06:54	40m	-10 / -	LB4PI	- / -	2	Partial capture
08-22 10:47	20m	- / -	R3DHP	-8 / -	4	Partial capture
08-22 10:46	20m	+1 / -3	UR5VPR	-10 / -7	4	✓ Full exchange observed
08-14 18:35	20m	-5 / -	TN8GD	- / -	3	Partial capture
08-14 18:32	20m	-8 / -	DH2YBG	- / -24	2	✓ Closing fragment
08-14 17:10	20m	- / +7	4L7T	-5 / -	2	✓ Closing fragment
08-14 16:59	20m	- / -	DH2YBG	-9 / -	5	Partial capture
08-06 17:53	40m	- / -10	9A4ZM	-6 / -	4	Partial capture
08-06 17:51	40m	- / -	IC8TEM	-9 / -	2	Partial capture
08-06 17:48	40m	- / -3	UA4FKT	-6 / -	3	✓ Closing fragment
08-06 17:33	20m	- / -	EA3FH	-12 / -	4	Partial capture
08-06 17:28	20m	- / -6	4X1UF	-13 / -	2	✓ Closing fragment
08-06 16:43	20m	- / -	EA3NT	-11 / -	3	Partial capture
08-06 16:42	20m	- / -	EA3FH	-10 / -	9	Partial capture
08-06 16:41	20m	- / -11	DH9DR	-10 / -	2	Partial capture
08-06 16:41	20m	0 / -	PD3LKN	-13 / -	2	✓ Closing observed
08-06 16:38	20m	-4 / -	E70SZ	- / -9	2	✓ Closing fragment
08-06 16:33	20m	- / -	EA3FH	-6 / -	3	Partial capture
08-06 16:18	40m	- / -20	YU7AS	-13 / -	3	Partial capture
08-05 18:44	40m	- / -	PE1NPS	-16 / -	2	Partial capture
08-02 17:23	20m	- / -	EA3FH	+1 / -	28	Partial capture
07-22 09:56	20m	- / -14	RN6MA	0 / -	2	✓ Closing fragment
07-22 09:56	20m	- / -	SV7BAY	-13 / -	5	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
170615 -14  261  CQ OH7XR KP53
170630 +11  261  OH7XR UX5UW KO50
170645 -12  261  UX5UW OH7XR +13
170700 +10  261  OH7XR UX5UW R-04
170730  +9 2638  OH7XR YO6LM KN25
170730  +6  261  OH7XR UX5UW 73
170745 -12  261  SQ5WBW/P OH7XR -14
170800  +4  263  OH7XR SP5MXZ +00
170815 -13  261  SQ5WBW/P OH7XR R-14
170830  +6  264  OH7XR SP5MXZ +00
170845 -12  261  SQ5WBW/P OH7XR RR73
170900  +4  264  OH7XR SP5MXZ +00 (x2)
170945 -14  262  SQ5WBW/P OH7XR -14
171000  +5  264  OH7XR SP5MXZ +00

20m

UTC    dB Audio  Message
183545  -6  428  TN8GD OH7XR KP53 (x3)
184345 -11  421  CQ OH7XR KP53
151945 -13 1314  OH7XR G6MTI IO81
104500  +2  390  CQ OH7XR KP53 (x2)
104600  -1  390  UR5VPR OH7XR -07
104615  -8  391  OH7XR UR5VPR R-03
104630  +3  390  UR5VPR OH7XR RR73
104645 -11  391  OH7XR UR5VPR 73
104745  -4 2517  OH7XR R3DHP KO95 (x4)

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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