OH5CY — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Finland Most frequent locator attributed to this token: KP30

Receiver-side FT8 activity involving OH5CY, decoded by SO8OO in southeastern Poland. 337 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, across 12 UTC dates in the available aggregate history. Observed between 2026-07-11 and 2026-09-12.

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 337 FT8 messages attributed to OH5CY as the transmitting token by decoded message structure across 12 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (49%), followed by 80 m (37%) and 40 m (14%). Most decodes (100%) fell within the six-hour window 17:00-23:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.

Overview

337
Messages attributed
12
UTC dates decoded
48
Active 15-min windows
-13 dB
Estimated median S/N

Bands

160m · 165 80m · 125 40m · 47
First attributed message: 2026-07-11
Last attributed message: 2026-09-12 19:49 UTC

Observed FT8 message patterns

Attributed sample
337 messages
Active dates
12 UTC dates
Estimated median S/N
-13 dB
Estimated 10th-90th percentile
-21 to -1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 121, moderate (-15 to -9 dB) 121, strong (≥ -8 dB) 95.

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 OH5CY 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 OH5CY

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 · 142 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,219 km (approx.)
Last such locator decoded
2026-09-12 19:48 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 UTCBandOH5CY S/NCounterpartCounterpart S/NMsgsCapture
09-12 19:48 80m 0 / - OH3OCM -14 / -1 6 ✓ Full exchange observed
09-12 19:39 80m +2 / -12 YT5DL +11 / -3 6 ✓ Full exchange observed
09-12 19:35 80m 0 / - M8FQT - / -17 4 Partial capture
09-12 19:34 80m +2 / - 9A9N - / - 3 Partial capture
09-12 19:31 80m 0 / -7 DO9MH -2 / -9 3 ✓ Full exchange observed
09-12 19:29 80m -4 / - RK6OQ - / -7 2 ✓ Closing fragment
09-12 19:27 80m -4 / - OZ0A +1 / -4 5 ✓ Full exchange observed
09-12 19:27 80m - / +2 R2FEA +16 / - 3 Partial capture
09-12 19:24 80m - / -17 F6BHK -8 / - 3 ✓ Closing fragment
09-12 19:21 80m -10 / - RK6OQ -1 / -2 2 Partial capture
09-12 19:13 80m -11 / - DL2MED -7 / - 2 ✓ Closing observed
09-12 18:53 80m - / +6 OH1ZE 0 / - 3 ✓ Closing fragment
09-12 18:52 80m -3 / -3 US5ZAY +17 / - 4 ✓ Closing observed
09-12 18:50 80m -9 / -25 RW4HB -8 / - 3 ✓ Closing observed
09-12 18:48 80m -7 / -9 R4FES -14 / -9 3 ✓ Full exchange observed
09-12 18:47 80m -6 / +9 OH5KNL -2 / -1 4 ✓ Full exchange observed
09-12 18:47 80m -9 / - OH6NIO -9 / - 2 ✓ Closing observed
09-12 18:44 80m -10 / -5 OH4KRN -10 / +1 4 ✓ Full exchange observed
09-12 18:39 80m -13 / - EA1IOK -12 / - 3 ✓ Closing observed
09-12 18:36 80m -10 / - R3BHK - / -15 2 ✓ Closing fragment
09-12 18:36 80m -12 / -9 IK5AUL -5 / -8 6 ✓ Full exchange observed
09-12 18:32 80m -2 / +5 LY2EW +9 / - 5 ✓ Closing observed
09-12 18:29 80m -2 / - DO7FJK -16 / -13 3 ✓ Closing observed
09-12 18:24 80m - / - HF5A +2 / - 2 Partial capture
09-12 18:23 80m - / -14 DL0RDG -11 / - 2 ✓ Closing fragment
09-12 18:22 80m -10 / -8 DA6IT -8 / -4 5 ✓ Full exchange observed
09-12 18:19 80m -6 / -2 OK1UOZ +16 / -3 6 ✓ Full exchange observed
09-12 18:17 80m - / -12 IU2KNG -2 / - 2 ✓ Closing fragment
09-12 18:17 80m -6 / -12 SP3BVI +8 / -4 5 ✓ Full exchange observed
09-12 18:16 80m - / - RW4HB -6 / - 2 Partial capture
09-12 18:14 80m -5 / -11 RN6HK +9 / -2 5 ✓ Full exchange observed
09-12 18:12 80m +4 / -16 OK1VKX +7 / +1 6 ✓ Full exchange observed
09-12 18:12 80m +2 / -7 RA6ANN -9 / -12 3 ✓ Full exchange observed
09-12 18:10 80m -4 / -14 R8CW -12 / -5 4 ✓ Full exchange observed
09-12 18:10 80m - / - SP7LPD 0 / - 5 Partial capture
09-12 18:09 80m -3 / -7 UR5RBP -6 / - 5 ✓ Closing observed
09-12 18:05 80m +3 / -14 R8DX -7 / - 3 ✓ Closing observed
09-12 18:05 80m - / +1 DA6WM -8 / - 4 ✓ Closing fragment
09-12 17:58 80m - / -3 RC2DD -7 / - 2 ✓ Closing fragment
09-12 17:58 80m - / -5 DO9SAM +5 / - 5 ✓ Closing fragment
09-12 17:55 80m -3 / -20 IQ4JO -3 / - 4 ✓ Closing observed
09-12 17:54 80m -1 / -7 9A4ZM +4 / -11 5 ✓ Full exchange observed
09-12 17:51 80m -7 / -24 IQ4JO -4 / - 4 ✓ Closing observed
09-12 17:44 80m -8 / -9 RC2Y -10 / -2 5 ✓ Full exchange observed
09-12 17:43 80m -4 / -13 UA3QNA +17 / +1 4 ✓ Full exchange observed
09-12 17:42 80m -8 / -16 RX4SA -16 / -2 5 ✓ Full exchange observed
08-29 22:30 160m -15 / - RI1FJL - / - 2 Partial capture
08-29 22:22 160m -16 / - RI1FJL - / - 7 Partial capture
08-29 22:20 160m -14 / -6 DD1UN -22 / -16 4 ✓ Full exchange observed
08-29 22:17 160m - / - GM5G -11 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
193645  +2  308  M8FQT OH5CY -17 (x2)
193915  -2  309  CQ OH5CY KP30
193930  +8  309  OH5CY YT5DL KN04 (x2)
194015  +0  309  YT5DL OH5CY -03
194030  +9  308  OH5CY YT5DL R-12
194045  +4  308  YT5DL OH5CY RR73
194100 +11  308  OH5CY YT5DL 73
194815  +0  309  OH3OCM OH5CY KP30 (x2)
194900 -17 1903  OH5CY OH3OCM +22
194915  -3  309  OH3OCM OH5CY R-01
194930 -12 1903  OH5CY OH3OCM RRR
194945  +4  308  OH3OCM OH5CY 73
160m 
UTC    dB Audio  Message
221730 -10  945  OH5CY GM5G 73
221945 -14 2169  CQ OH5CY KP30
222015 -16 2169  DD1UN OH5CY -16
222030 -22 1683  OH5CY DD1UN R-06
222045 -11 2169  DD1UN OH5CY RR73
222100 -21 1684  OH5CY DD1UN 73
222215 -16 2169  RI1FJL OH5CY KP30 (x9)
40m 
UTC    dB Audio  Message
202500  -1  676  OH5CY DJ0MAB JN49
202515  -6  676  DJ0MAB OH5CY -02
202530 -13 1853  OH5CY YT3ZT -03
202530  +4  676  OH5CY DJ0MAB R+00
202545  +1  676  DJ0MAB OH5CY RR73
202600  +0  676  OH5CY DJ0MAB 73
202615  -3  676  YT3ZT OH5CY R-12 (x2)
202700 -12 1853  OH5CY YT3ZT RR73
202715  +1  677  YT3ZT OH5CY 73
203515  -1  682  CQ OH5CY KP30
203600 -12 1185  OH5CY DL2EMS JO31
203615  -3  680  DL2EMS OH5CY -13 (x3)

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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