OH5CX — 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: Finland Most frequent locator attributed to this token: KP30

Receiver-side FT8 activity involving OH5CX, decoded by SO8OO in southeastern Poland. 397 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, across 27 UTC dates in the available aggregate history. Observed between 2026-07-23 and 2026-11-06.

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 397 FT8 messages attributed to OH5CX as the transmitting token by decoded message structure across 27 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (53%), followed by 40 m (33%) and 80 m (12%). Most decodes (77%) fell within the six-hour window 02:00-08:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

397

Messages attributed

UTC dates decoded

Active 15-min windows

-8 dB

Estimated median S/N

Bands

160m · 6 80m · 47 60m · 212 40m · 131 20m · 1

First attributed message: 2026-07-23
Last attributed message: 2026-11-06 02:33 UTC

Observed FT8 message patterns

Attributed sample: 397 messages
Active dates: 27 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -14 to -1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 29, moderate (-15 to -9 dB) 158, strong (≥ -8 dB) 210.

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 OH5CX in decoded directed-looking exchanges:

4O7CC · Montenegro ×2 F6FHZ · France ×2 SQ7LQT · Poland ×2 UA4FKT · European Russia 4X5MZ · Israel F1DXP · France F1ODM · France GJ0KYZ · Jersey R3KCW · European Russia UB8CPH · Asiatic Russia 7Z1AV · Saudi Arabia 9V1PL · Singapore

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 OH5CX

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: KP30 · 289 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,219 km (approx.)
Last such locator decoded: 2026-11-06 02:33 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	OH5CX S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-04 17:09	40m	-3 / -	AP5ARS	- / -	4	Partial capture
11-04 17:04	40m	+1 / -	9V1PL	- / -16	4	✓ Closing fragment
11-04 16:44	40m	-1 / -	7Z1AV	- / -1	3	✓ Closing fragment
11-04 16:41	40m	-4 / -	9V1PL	- / -	6	Partial capture
10-29 03:33	160m	-22 / -8	RN4SN	-19 / -14	4	Partial capture
10-29 03:32	160m	-14 / -6	UA4FKT	+2 / +8	5	✓ Full exchange observed
10-29 03:30	160m	-12 / -13	4O7CC	+4 / -9	5	✓ Full exchange observed
10-29 03:20	80m	-8 / -	HF50HSP	- / 0	3	Partial capture
10-29 03:18	80m	-14 / -	IQ0AK	- / -20	4	✓ Closing fragment
10-29 03:15	80m	-11 / -	HK4L	- / -	6	Partial capture
10-29 03:11	80m	-2 / -14	IQ0AAI	-1 / -	6	✓ Closing observed
10-29 03:10	80m	-1 / -	EA8AR	- / -10	3	✓ Closing fragment
10-29 03:09	80m	+5 / +4	F5MXH	-4 / -5	5	✓ Full exchange observed
10-29 03:08	80m	+7 / -	4L7T	-24 / -21	4	✓ Closing observed
10-29 03:02	60m	-5 / -	S9R	- / -19	3	Partial capture
10-27 16:42	60m	-12 / -	G8DCJ	- / -16	3	✓ Closing fragment
10-27 16:40	60m	-12 / -10	IK0BAL	-4 / -11	7	✓ Full exchange observed
10-27 16:39	60m	-8 / -6	IK5ZPV	-10 / -10	6	✓ Full exchange observed
10-27 16:39	60m	-10 / -11	DM5KW	+7 / -	4	✓ Full exchange observed
10-27 16:37	60m	-11 / -	OH5YZ	-21 / -7	4	✓ Closing observed
10-27 04:17	60m	-7 / -	C5R	- / -	6	Partial capture
10-25 04:37	80m	+4 / -	N2RJ	- / -	2	Partial capture
10-25 04:12	60m	- / -12	CN8DN	-20 / -	3	✓ Closing fragment
10-24 05:56	60m	-8 / -	WE8R	- / -	3	Partial capture
10-24 04:40	60m	-8 / -	CO7WT	- / -	3	Partial capture
10-23 03:03	60m	-13 / -3	F6FHZ	-20 / -12	5	✓ Full exchange observed
10-23 03:02	60m	-14 / -	HA5UK	-19 / +4	3	✓ Closing observed
10-23 02:54	60m	-13 / -8	EP2AES	-4 / -2	16	✓ Full exchange observed
10-22 15:43	60m	-13 / -	3B8FA	- / -	6	Partial capture
10-16 04:39	80m	-5 / -	VP2MAW	- / -	3	Partial capture
10-16 04:38	80m	-10 / -	GU4WRP	- / -5	3	✓ Closing fragment
10-16 03:13	80m	- / -	UR3HC	-5 / -	2	Partial capture
10-16 03:09	80m	-8 / -	VP2MAW	- / -	11	Partial capture
10-11 04:03	60m	- / -16	PI4DX	-3 / -	2	✓ Closing fragment
10-04 05:08	40m	-11 / -	V51WH	- / -	4	Partial capture
10-04 05:06	40m	-8 / -	NA5AR	- / -	3	Partial capture
10-04 05:01	40m	-9 / -	KA9FOX	- / -	7	Partial capture
10-04 04:57	40m	-11 / -	LW7ELF	- / -	4	Partial capture
10-04 04:48	40m	-8 / -	LW7ELF	- / -	4	Partial capture
10-04 03:38	40m	-14 / -	TJ1GD	- / -	3	Partial capture
10-04 03:14	60m	-9 / -	Z61DX	- / -	4	Partial capture
10-01 03:45	60m	-13 / -	LU1WFU	- / -	7	Partial capture
10-01 03:43	60m	-20 / -19	OH7TV	0 / -18	5	✓ Full exchange observed
10-01 03:41	60m	-14 / -	W4DXX	- / -	2	Partial capture
10-01 03:18	60m	-3 / -11	OH8SR	+3 / -	3	✓ Closing observed
10-01 02:36	60m	-12 / -	HA5CPN	- / -14	3	✓ Closing fragment
09-30 15:56	60m	-20 / -	<...>	- / -	2	Partial capture
09-25 05:50	40m	-12 / -	FK8HC	- / -	2	Partial capture
09-25 05:38	40m	-11 / -	SV7BAY	-14 / -	3	✓ Closing observed
09-25 05:29	40m	- / -22	9A/G3VCQ	-18 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
164315  -1 2893  9V1PL OH5CX KP30 (x2)
164415  -4 2893  7Z1AV OH5CX KP30 (x3)
164745  -4 2893  9V1PL OH5CX R-17 (x5)
170915  -3 3036  AP5ARS OH5CX KP30 (x4)
023345 -15 2325  VP2MCV OH5CX KP30

160m

UTC    dB Audio  Message
033045 -12 2324  4O7CC OH5CX KP30
033100  +3  676  OH5CX 4O7CC -13
033115 -12 2324  4O7CC OH5CX R-09
033130  +6  676  OH5CX 4O7CC RR73
033145 -12 2324  4O7CC OH5CX 73
033200  +2 2324  OH5CX UA4FKT LO23
033215 -15 2324  UA4FKT OH5CX +08
033230  +1 2324  OH5CX UA4FKT R-06
033245 -12 2324  UA4FKT OH5CX RR73
033300  +3 2324  OH5CX UA4FKT 73
033300 -18 2203  OH5CX RN4SN LO36
033315 -22 2324  RN4SN OH5CX -14
033330 -18 2220  OH5CX RN4SN R-08 (x2)

80m

UTC    dB Audio  Message
031445  -6 1918  IQ0AAI OH5CX 73
031530 -13 1900  HK4L OH5CX KP30 (x6)
031845 -16 1900  IQ0AK OH5CX KP30 (x4)
032030 -16 1384  OH5CX SM/R1CR +03
032045  -9 1900  HF50HSP OH5CX R+00 (x3)

60m

UTC    dB Audio  Message
164030  -8 1235  OH5CX IK5ZPV R-06
164030  -5 1978  OH5CX IK0BAL JN66
164045  -8 2407  IK5ZPV OH5CX RR73
164100 -11 1235  OH5CX IK5ZPV 73
164100  -4 1978  OH5CX IK0BAL JN66
164115 -13 2407  IK0BAL OH5CX -11
164130  -4 1978  OH5CX IK0BAL R-10
164145 -10 2408  IK0BAL OH5CX RR73
164200  -1 1978  OH5CX IK0BAL 73
164230 -14 2407  G8DCJ OH5CX KP30 (x3)
030215  -3  613  S9R OH5CX KP30 (x3)

20m

UTC    dB Audio  Message
173845  -2  524  OH5CX GJ0KYZ RR73
173915 -15 2579  OH5CX 2I0WMN -12 (x2)
050200  -3 1447  OH5CX R3KCW KO90 (x4)
050700  +0 3057  OH5CX 4X5MZ R-16 (x2)
053715 -14 2650  OH5CX F1DXP RR73
055315  -9 3087  OH5CX UB8CPH +01 (x2)
055745  +3 2093  OH5CX F1ODM -08 (x2)
122130 -16 1470  OH5CX MW7RHR -20

10m

UTC    dB Audio  Message
113515 -11  569  OH5CX LX1NO -25

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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