OH5D — 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 OH5D, decoded by SO8OO in southeastern Poland. 1,209 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, across 62 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-11.

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 1,209 FT8 messages attributed to OH5D as the transmitting token by decoded message structure across 62 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (53%), followed by 40 m (27%) and 60 m (10%). Most decodes (81%) fell within the six-hour window 14:00-20:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (72%); the estimated median was -3.3 dB.

Overview

1,209

Messages attributed

UTC dates decoded

163

Active 15-min windows

-3.3 dB

Estimated median S/N

Bands

160m · 64 80m · 645 60m · 124 40m · 331 20m · 45

First attributed message: 2026-06-06
Last attributed message: 2026-10-11 15:11 UTC

Observed FT8 message patterns

Attributed sample: 1,209 messages
Active dates: 62 UTC dates
Estimated median S/N: -3.3 dB
Estimated 10th-90th percentile: -14.8 to +7 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 97, moderate (-15 to -9 dB) 236, strong (≥ -8 dB) 876.

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 OH5D in decoded directed-looking exchanges:

RI1FJZ · Franz Josef Land ×2 RX6DA · European Russia ×2 LA1HW · Norway ×2 GX7RAF/P · England ×2 M0SSK · England ×2 IV3JTG · Italy ×2 9A0W · Croatia 9A3ZI · Croatia DM5KM · Fed. Rep. of Germany JA6MWW · Japan JA7KPI · Japan OH1LWZ · Finland

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 OH5D

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 · 626 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,219 km (approx.)
Last such locator decoded: 2026-10-11 15:11 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	OH5D S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-11 15:10	40m	-11 / -	YC1IFM	- / -	3	Partial capture
10-09 15:30	40m	+3 / -	EY7BM	- / -	4	Partial capture
10-08 16:48	160m	- / -	OH7KB	0 / -	2	Partial capture
10-08 16:48	160m	- / -	SP6TAF	-13 / -	3	Partial capture
10-08 16:48	160m	- / -	RK4F	-16 / -	2	Partial capture
10-08 16:46	160m	-17 / -	RX6DA	- / -14	3	✓ Closing fragment
10-08 16:14	160m	- / -	RU3X	-14 / -	3	Partial capture
10-08 16:14	160m	-24 / -9	RX6DA	-14 / -9	6	✓ Full exchange observed
10-08 16:13	60m	- / -	HB9ALO	-6 / -	2	Partial capture
10-08 16:12	160m	-16 / +5	OH1LWZ	-18 / -	5	✓ Full exchange observed
10-08 16:09	60m	-17 / -	LA2GCA	- / -	3	✓ Closing fragment
10-08 16:07	60m	-17 / -8	F5PZT	-7 / -10	6	✓ Full exchange observed
10-08 16:05	60m	-15 / -1	DL4YDR	-8 / -11	5	✓ Full exchange observed
10-08 15:50	40m	-6 / -	A93MO	- / -	2	Partial capture
10-06 18:31	80m	+2 / -2	LX9DIG	+7 / +4	7	✓ Full exchange observed
10-06 18:29	160m	-5 / 0	RZ3DW	+12 / -	3	✓ Full exchange observed
10-06 18:28	160m	- / -	OE3PKU	-2 / -	10	Partial capture
10-06 18:28	160m	-8 / -	UN7LAN	- / -	3	Partial capture
10-06 18:27	160m	-12 / -	SV3GKU	- / -	2	Partial capture
10-06 18:25	160m	-6 / -11	OZ9FF	-14 / -17	5	✓ Full exchange observed
10-06 18:24	160m	-8 / -	OE3PKU	- / -	2	Partial capture
10-06 18:20	80m	+4 / -	LZ936BA	- / -8	2	Partial capture
10-06 17:31	80m	+2 / -13	UA4FEN	-10 / -6	4	✓ Full exchange observed
10-06 17:30	80m	+1 / -	UN7CFG	-16 / -16	4	✓ Closing observed
10-04 16:24	40m	+1 / -	3B9FR	- / -	9	Partial capture
10-04 16:21	40m	- / -	UB6HWF	-6 / -	2	Partial capture
10-04 16:18	40m	-1 / -	EA2EJO	- / -8	5	✓ Closing fragment
10-04 16:12	80m	-4 / +6	DA6NEL	+5 / -	5	✓ Closing observed
10-04 16:12	80m	+2 / -7	RD7LC	-2 / -	4	✓ Full exchange observed
10-04 16:10	80m	-2 / -19	DO1ZTR	+3 / -20	5	✓ Full exchange observed
10-04 16:07	40m	-3 / -	R3ZBY	- / -2	2	✓ Closing fragment
10-04 16:05	40m	-3 / -1	F5BWS	-6 / -10	5	✓ Full exchange observed
10-04 15:50	40m	- / -	DL1NRC	-2 / -	7	✓ Closing fragment
10-04 15:47	40m	-8 / -	S57ACD	- / -	4	Partial capture
10-04 15:45	40m	+2 / -	G3VCQ	-10 / -8	5	✓ Closing observed
10-04 15:43	40m	+8 / -8	M7RFR	-8 / -10	5	✓ Full exchange observed
10-04 13:29	40m	+6 / -	M7CLO	- / -23	3	✓ Closing fragment
09-29 04:43	80m	+8 / -	W2TT	- / -	5	Partial capture
09-29 04:41	80m	+6 / -	KF8EXX	- / -	4	Partial capture
09-29 04:34	80m	0 / -	HI3RRR	- / -	5	Partial capture
09-27 17:42	40m	+9 / -	OK2SIR/QRP	- / -	3	Partial capture
09-27 17:39	40m	+2 / -	LA1HW	- / -15	2	✓ Closing fragment
09-27 17:38	40m	-3 / -	OH3EZ	-10 / -23	5	Partial capture
09-27 17:36	40m	+5 / +4	F6FHZ	-7 / -6	4	✓ Full exchange observed
09-27 17:34	40m	+4 / -	G8KHF	- / +1	3	✓ Closing fragment
09-27 17:32	80m	+4 / -	S55X	- / -	3	Partial capture
09-27 17:30	80m	+8 / -5	US7KC	+14 / -	5	✓ Full exchange observed
09-27 17:26	80m	+9 / +6	SP9TEX	+8 / +9	4	✓ Full exchange observed
09-26 19:17	60m	-8 / -3	IK2VFR/P	-6 / +8	5	✓ Full exchange observed
09-26 19:16	60m	-10 / -	OO0O	- / -17	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
162715  +2 2569  3B9FR OH5D KP30 (x4)
181830 +10 2568  9K2MP OH5D KP30
155015  -4 2184  A93MO OH5D KP30 (x2)
153000  -4 2085  EY7BM OH5D KP30 (x4)
150630  -6 2253  YG9DFK OH5D KP30
151030 -13 2253  YC1IFM OH5D KP30 (x3)

160m

UTC    dB Audio  Message
161615 -15 1392  OH5D RX6DA KN85
161615 -12 1877  OH5D RU3X KO73
161630 -24 2036  RX6DA OH5D -09
161645 -10 1392  OH5D RX6DA R-09 (x2)
164645 -14 2036  RX6DA OH5D -14 (x3)
164800 -12 1285  OH5D RK4F LO23
164830  -5 2037  OH5D SP6TAF JO81
164830 -21 1285  OH5D RK4F LO23
164830  +0 2440  OH5D OH7KB KP33
164900 -13 2037  OH5D SP6TAF JO81
164900  -1 2440  OH5D OH7KB KP33
164930 -20 2037  OH5D SP6TAF JO81

60m

UTC    dB Audio  Message
160515  -6 1776  OH5D DL4YDR -01
160530 -16 1991  DL4YDR OH5D R-11
160545  -9 1776  OH5D DL4YDR RR73
160600 -17 1991  DL4YDR OH5D 73
160700 -18 1991  F5PZT OH5D KP30 (x3)
160815  -7 1530  OH5D F5PZT -08
160830 -15 1991  F5PZT OH5D R-10 (x2)
160930 -19 1992  LA2GCA OH5D KP30 (x3)
161315  -8 1201  OH5D HB9ALO JN45 (x2)

80m

UTC    dB Audio  Message
173130  +1 2281  UA4FEN OH5D R-06
173145 -10 2334  OH5D UA4FEN RR73
173200  +2 2281  UA4FEN OH5D 73
173315  -3 2280  OH5D RA4FEA LO33
182015  +3 2281  LZ936BA OH5D KP30
182030  -6 2279  OH5D YU65AEC -09
182045  +4 2280  LZ936BA OH5D R-08
183145  +3  995  LX9DIG OH5D KP30 (x3)
183300  +7  420  OH5D LX9DIG -02
183315  +2  995  LX9DIG OH5D R+04
183330  +7  420  OH5D LX9DIG RR73
183345  +1  995  LX9DIG OH5D 73
183530  -4  995  UR5VLC OH5D KP30

20m

UTC    dB Audio  Message
143400 -17 1290  OH5D CT3MD -14 (x3)
143630 -15 2273  OH5D PE9JAN JO22 (x3)
144100  +0 2855  OH5D DJ1PQ JN49
123815  -9 2605  <...> OH5D KP30 (x2)
124200  -5  453  OH5D <...> +01 (x2)

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

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee