OH5C — 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 OH5C, decoded by SO8OO in southeastern Poland. 80 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-10-09.

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 80 FT8 messages attributed to OH5C as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (56%), followed by 80 m (23%) and 20 m (19%). Several six-hour UTC windows tied for the largest share (83%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

80
Messages attributed
8
UTC dates decoded
13
Active 15-min windows
-11 dB
Estimated median S/N

Bands

160m · 45 80m · 18 40m · 2 20m · 15
First attributed message: 2026-06-11
Last attributed message: 2026-10-09 21:07 UTC

Observed FT8 message patterns

Attributed sample
80 messages
Active dates
8 UTC dates
Estimated median S/N
-11 dB
Estimated 10th-90th percentile
-17 to -4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 15, moderate (-15 to -9 dB) 35, strong (≥ -8 dB) 30.

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 OH5C in decoded directed-looking exchanges:

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 OH5C

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 · 32 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,219 km (approx.)
Last such locator decoded
2026-10-09 21:06 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 UTCBandOH5C S/NCounterpartCounterpart S/NMsgsCapture
10-09 21:06 160m -5 / -16 R3ZMM -8 / 0 4 ✓ Full exchange observed
10-09 21:03 160m -6 / -17 UT0CK -10 / - 6 ✓ Full exchange observed
10-09 21:01 160m -10 / - DL1SVI -9 / +2 4 ✓ Closing observed
10-09 21:00 160m - / - OK9DMR -16 / - 6 Partial capture
10-09 21:00 160m -12 / - R7GR - / -11 2 ✓ Closing fragment
10-09 20:58 160m -8 / -17 OE3OOG -1 / - 4 ✓ Closing observed
10-09 20:57 160m -15 / -24 E70SZ -24 / -6 3 Partial capture
10-09 20:56 160m -12 / - UA4CKN - / -5 2 ✓ Closing fragment
10-09 20:53 160m -7 / - RA3RDN -23 / - 2 ✓ Closing observed
10-09 20:52 160m -12 / -17 OK1BLU -11 / +4 4 ✓ Full exchange observed
10-09 20:51 160m -4 / -14 UA4FKT -18 / - 4 ✓ Full exchange observed
08-28 18:42 80m -1 / - VK6IR - / -22 3 ✓ Closing fragment
08-28 18:37 80m - / - UA3UBV -7 / - 2 Partial capture
08-28 18:35 80m -8 / -12 RK9UM -18 / 0 6 ✓ Full exchange observed
08-28 18:34 80m -11 / -7 DL9KM -5 / - 4 ✓ Closing observed
08-28 18:32 80m -7 / -13 R2AL +2 / +8 9 ✓ Full exchange observed
08-28 18:32 80m -8 / -14 F5HNQ -15 / -7 4 ✓ Full exchange observed
08-28 18:30 80m -8 / 0 SP2L +4 / - 3 ✓ Full exchange observed
08-28 18:29 80m -8 / -9 RA4FHO +4 / 0 4 ✓ Full exchange observed
08-28 18:25 80m -13 / -8 YO4NT +4 / +9 3 ✓ Full exchange observed
08-28 18:23 80m -15 / -9 SQ8V +2 / - 5 ✓ Closing observed
08-28 18:23 80m -14 / -10 US7KC +11 / - 3 Partial capture
08-14 19:42 40m - / - 2E0IJC -15 / - 2 Partial capture
08-14 19:26 20m - / +2 G1JMT -10 / - 2 Partial capture
08-14 19:23 20m - / -18 M0KQV -11 / - 2 Partial capture
08-14 19:20 20m - / +4 MM7BWK -20 / - 2 Partial capture
08-14 19:09 20m - / - F1PPH -4 / - 3 Partial capture
08-14 19:01 20m - / -20 EA5BCO -11 / - 5 ✓ Closing fragment
08-14 19:01 20m - / - F1PPH -10 / - 2 Partial capture
08-09 19:19 160m -14 / -2 SP9WAZ -8 / -11 2 Partial capture
08-09 19:14 160m - / -13 DG0JK +5 / - 4 ✓ Closing fragment
08-09 19:13 160m - / - OH1JP +8 / - 2 Partial capture
08-09 19:10 160m -15 / -7 RA3LCI -20 / - 3 ✓ Closing observed
08-09 19:10 160m - / -7 SP3PLD +6 / - 2 Partial capture
08-09 19:10 160m - / - SP7SEK +2 / - 2 ✓ Closing fragment
08-09 19:09 160m - / -1 UT6HN +3 / - 3 ✓ Closing fragment
08-09 19:09 160m -9 / +4 UA3FH -12 / -2 3 ✓ Full exchange observed
08-09 19:07 160m - / - SP7SEK +10 / - 2 Partial capture
08-09 19:05 160m -15 / -23 OH0ERF -22 / +1 5 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

160m 
UTC    dB Audio  Message
210330 -14 1952  R8CEG OH5C -19
210345 -13 1952  OH5C UT0CK KN69
210345 -19 1228  OH5C OK9DMR JO70
210415  -8 1952  OH5C UT0CK KN69
210415 -14 1227  OH5C OK9DMR JO70
210430  -8 1953  UT0CK OH5C +11
210445 -13 1952  OH5C UT0CK R-17
210500  -4 1953  UT0CK OH5C RR73
210515  -4 1952  OH5C UT0CK 73
210530  -3 1952  CQ OH5C KP30 (x2)
210615  -6 2561  OH5C R3ZMM KO90
210630  -6 1952  R3ZMM OH5C +00
210645 -11 2561  OH5C R3ZMM R-16
210700  -4 1952  R3ZMM OH5C RR73
40m 
UTC    dB Audio  Message
194215 -15 1956  OH5C 2E0IJC IO95 (x2)
142915 -15 2438  VJ6X OH5C KP30
191915  -4 2062  RI1FJZ OH5C R-01
80m 
UTC    dB Audio  Message
183515  -3 2245  OH5C DL9KM 73
183530  -5 1742  R2AL OH5C RR73
183545 -20 1741  OH5C RK9UM NO35
183545  +2 1453  OH5C R2AL 73
183600  -8 1742  RK9UM OH5C +00
183615 -16 1742  OH5C RK9UM R-12
183630  -7 1742  RK9UM OH5C RR73
183645 -20 1742  OH5C RK9UM 73
183700  -1 1742  CQ OH5C KP30
183745  -8 1074  OH5C UA3UBV LO07 (x2)
184245  +0  710  VK6IR OH5C KP30 (x3)
184530  +5  954  OH5C LZ3SD KN22
20m 
UTC    dB Audio  Message
190500 -24 1996  CQ OH5C KP30                          a1
190630 -24 1995  F4MGP OH5C RR73
190915  -4 1995  OH5C F1PPH JN07 (x3)
191815 -24 1996  OH5C PA0GSP 73
192045 -19 1996  OH5C MM7BWK IO85 (x2)
192315 -14  963  OH5C M0KQV R-18 (x2)
192645 -10  629  OH5C G1JMT IO92 (x2)
192815 -14  629  OH5C RC6OT KN87
193015 -10  728  OH5C G1JMT 73
123445  -2  641  OH5C G8RZ IO84

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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