SV8DCY — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Greece Most frequent locator attributed to this token: KM39

Receiver-side FT8 activity involving SV8DCY, decoded by SO8OO in southeastern Poland. 1,035 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 15 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-08.

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 1,035 FT8 messages attributed to SV8DCY as the transmitting token by decoded message structure across 15 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (85%), followed by 160 m (8%) and 80 m (5%). Most decodes (60%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (87%); the estimated median was +2 dB.

Overview

1,035
Messages attributed
15
UTC dates decoded
61
Active 15-min windows
+2 dB
Estimated median S/N

Bands

160m · 80 80m · 55 40m · 20 20m · 880
First attributed message: 2026-06-06
Last attributed message: 2026-09-08 20:11 UTC

Observed FT8 message patterns

Attributed sample
1,035 messages
Active dates
15 UTC dates
Estimated median S/N
+2 dB
Estimated 10th-90th percentile
-10 to +9 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 25, moderate (-15 to -9 dB) 109, strong (≥ -8 dB) 901.

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 SV8DCY 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 SV8DCY

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
KM39 · 625 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,231 km (approx.)
Last such locator decoded
2026-09-08 20:11 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 UTCBandSV8DCY S/NCounterpartCounterpart S/NMsgsCapture
09-08 20:10 160m -2 / - <...> - / -12 4 Partial capture
09-06 18:13 160m -4 / - <...> - / - 5 Partial capture
09-06 18:09 160m - / - SM5EPO -12 / - 5 Partial capture
09-06 18:05 160m - / - SP7UB -9 / - 3 Partial capture
09-06 18:00 160m -4 / - RA3RGQ - / -19 2 ✓ Closing fragment
09-06 17:57 160m -4 / - UA4CKN - / -21 2 ✓ Closing fragment
09-06 17:48 160m -2 / -3 YO2MAX -7 / -14 5 ✓ Full exchange observed
08-31 20:13 80m +6 / - V51WH - / -24 4 ✓ Closing fragment
08-30 20:31 80m +4 / - V51WH - / - 2 Partial capture
08-30 20:19 40m -1 / - RI1FJL - / -16 7 Partial capture
08-30 19:54 160m -7 / - JA7JPZ - / -17 3 ✓ Closing fragment
08-30 19:24 80m +9 / -9 HB0WR +9 / -4 5 ✓ Full exchange observed
08-22 20:25 160m -3 / -10 <...> +6 / -14 5 Partial capture
08-17 20:17 160m - / - DL3IKE -10 / - 2 Partial capture
08-15 17:13 40m -10 / - IU8VMZ - / -11 3 Partial capture
08-03 20:39 160m -12 / -6 SQ2BXI +5 / -13 4 ✓ Full exchange observed
08-01 18:10 80m +5 / -14 UA4LDP -11 / -9 7 ✓ Full exchange observed
08-01 18:09 80m +5 / -7 UA3ZQN +13 / +7 4 ✓ Full exchange observed
08-01 18:08 80m +4 / - RX3DQL - / -7 2 ✓ Closing fragment
08-01 18:07 80m +4 / - R9FGF -24 / -7 3 ✓ Closing observed
08-01 17:39 80m -4 / +1 ZS6WAB -8 / -10 4 ✓ Full exchange observed
07-04 17:38 20m -11 / - EA5IT - / -12 2 ✓ Closing fragment
07-04 17:36 20m -1 / - MM0TBH - / -1 2 ✓ Closing fragment
07-04 17:33 20m -4 / - R4RJ - / -7 2 ✓ Closing fragment
07-04 17:32 20m -6 / - 9A3K - / 0 2 ✓ Closing fragment
07-04 17:22 20m -3 / - R3UCZ - / -13 11 ✓ Closing fragment
07-04 17:08 20m -1 / - SP9MOA - / -13 3 ✓ Closing fragment
07-04 17:06 20m -3 / - OK1UOZ - / -13 2 ✓ Closing fragment
07-04 17:00 20m -5 / -3 F1SZC -12 / +1 6 ✓ Full exchange observed
07-04 17:00 20m +1 / - TM2WWA -18 / - 2 ✓ Closing observed
07-04 16:57 20m -4 / - OM3PC - / -11 5 ✓ Closing fragment
07-04 16:54 20m -6 / - M0ENG - / -16 2 ✓ Closing fragment
06-15 21:10 20m -7 / -4 EA3EQS -8 / -4 5 ✓ Full exchange observed
06-15 21:04 20m -4 / - G0ULG -17 / -21 3 ✓ Closing observed
06-15 20:56 20m +7 / - IW1PVB -17 / -19 3 ✓ Closing observed
06-15 20:52 20m +6 / - JA9JAI - / -17 2 ✓ Closing fragment
06-15 20:51 20m +5 / - KX9DX - / -19 3 Partial capture
06-15 20:49 20m +5 / -14 ON3KDR -12 / -17 6 ✓ Full exchange observed
06-15 20:47 20m 0 / - DL7DO - / -8 2 ✓ Closing fragment
06-15 20:43 20m +3 / - RA3QH - / -6 2 ✓ Closing fragment
06-15 20:41 20m +3 / - DM5KM - / -6 2 ✓ Closing fragment
06-15 20:36 20m +10 / - IZ5YBN -15 / -11 3 ✓ Closing observed
06-15 20:31 20m +8 / - F4MVU - / -22 2 ✓ Closing fragment
06-15 20:14 20m +4 / +9 PH2W -10 / -6 5 ✓ Full exchange observed
06-15 20:12 20m +8 / - IK2CMI - / -15 2 ✓ Closing fragment
06-15 20:10 20m +4 / -21 IU5TSN -14 / -17 6 ✓ Full exchange observed
06-15 20:07 20m +6 / - DM7WD - / -14 2 ✓ Closing fragment
06-15 20:03 20m +4 / - S52R - / -4 2 ✓ Closing fragment
06-15 19:59 20m +6 / - ON1AEY -6 / +2 4 ✓ Closing observed
06-15 19:56 20m +6 / - 4Z5MY - / -20 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

160m 
UTC    dB Audio  Message
181030  -5 2507  CQ SV8DCY KM39
181045 -16 2298  SV8DCY SM5EPO JP80
181100  -4 2507  CQ SV8DCY KM39
181115 -10 2297  SV8DCY SM5EPO JP80
181130  -2 2507  CQ SV8DCY KM39
181145  -7 2297  SV8DCY SM5EPO JP80
181345  -5 2507  <...> SV8DCY KM39 (x9)
80m 
UTC    dB Audio  Message
203015  +6 2302  TF4M SV8DCY R-16
203030 -13 2108  SV8DCY RR73; ON6LR <...> -04
204200 -18 1805  SV8DCY RA0SCA OO06
192400  +6 2228  HB0WR SV8DCY KM39
192415  +8 2775  SV8DCY HB0WR -09
192430 +11 2229  HB0WR SV8DCY R-04
192445 +10 2775  SV8DCY HB0WR RR73
192500 +10 2229  HB0WR SV8DCY 73
203100  +4 2389  V51WH SV8DCY KM39 (x6)
204215  -9 2021  RI1FJL SV8DCY RR73
40m 
UTC    dB Audio  Message
171300 -11 2501  IU8VMZ SV8DCY -11 (x3)
171530  -9 2501  CQ SV8DCY KM39 (x2)
171700 -12 2501  IU8VMZ SV8DCY -03
171730 -14 2500  CQ SV8DCY KM39
201945  -3 2425  RI1FJL SV8DCY KM39 (x7)
202515  +3 2425  VK2NN SV8DCY RR73
20m 
UTC    dB Audio  Message
173400  -4 2594  R4RJ SV8DCY RR73
173430  +1 2594  YT1UBN SV8DCY +04
173530  -4 2594  CQ SV8DCY KM39
173600  +1 2594  MM0TBH SV8DCY -01 (x2)
173700  -2 2594  CQ SV8DCY KM39 (x2)
173800 -12 2594  EA5IT SV8DCY -12 (x2)
173900  -3 2594  CQ SV8DCY KM39 (x6)

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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