N4YYV — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EM60

Receiver-side FT8 activity involving N4YYV, decoded by SO8OO in southeastern Poland. 169 FT8 messages attributed to this token as transmitter, on 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-19 and 2026-07-12.

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 169 FT8 messages attributed to N4YYV as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -15 dB.

Overview

169
Messages attributed
4
UTC dates decoded
23
Active 15-min windows
-15 dB
Estimated median S/N

Bands

20m · 169
First attributed message: 2026-06-19
Last attributed message: 2026-07-12 01:56 UTC

Observed FT8 message patterns

Attributed sample
169 messages
Active dates
4 UTC dates
Estimated median S/N
-15 dB
Estimated 10th-90th percentile
-22 to -7 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 83, moderate (-15 to -9 dB) 60, strong (≥ -8 dB) 26.

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 N4YYV 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 N4YYV

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
EM60 · 83 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,661 km (approx.)
Last such locator decoded
2026-07-12 01:49 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 UTCBandN4YYV S/NCounterpartCounterpart S/NMsgsCapture
08-29 01:07 40m - / -21 W1MLT -17 / - 5 ✓ Closing fragment
08-28 20:52 20m - / - F4JQH -5 / - 2 Partial capture
08-28 20:50 20m - / -12 IZ5MJO -16 / - 4 ✓ Closing fragment
08-28 20:10 20m - / - DM5WGL +4 / - 10 Partial capture
08-28 20:09 20m - / - F4BYA +11 / - 3 Partial capture
08-28 19:43 20m - / -9 EA2AA -9 / - 7 Partial capture
08-28 19:32 20m - / -11 NF3R -7 / - 4 ✓ Closing fragment
08-25 03:15 40m - / - KC4WCY -18 / - 2 Partial capture
08-25 02:52 40m - / - K1JAK -18 / - 2 ✓ Closing fragment
08-24 02:08 40m - / -19 CT7AUT -10 / - 2 Partial capture
08-23 22:17 20m - / - OK2CNI -8 / - 5 Partial capture
08-23 03:21 20m - / -13 RN3GJ -10 / - 2 Partial capture
08-23 03:13 20m - / - PD0RCQ -17 / - 3 Partial capture
08-23 03:03 20m - / -10 RA6MQ +4 / - 3 ✓ Closing fragment
08-23 02:05 20m - / - DL1VCA +2 / - 3 Partial capture
08-23 02:00 20m - / - IK4LZH -10 / - 4 Partial capture
08-23 01:36 20m - / - PD0RCQ -9 / - 4 Partial capture
08-14 19:30 20m - / - F4VVJ +5 / - 3 Partial capture
08-11 03:23 40m - / - DL8TV -16 / - 3 Partial capture
08-11 03:06 40m - / -14 YO6LM +2 / - 2 Partial capture
08-08 02:39 40m - / - R2EC 0 / - 2 Partial capture
08-08 01:13 40m - / - OH1EDK 0 / - 3 Partial capture
08-03 00:14 40m - / +2 F1PBZ -15 / - 2 Partial capture
08-01 01:18 40m - / -16 G5TV -15 / - 8 Partial capture
08-01 00:53 40m - / -17 G5TV -19 / - 3 Partial capture
08-01 00:41 40m - / -15 HA7TM -20 / - 3 ✓ Closing fragment
07-29 02:43 40m - / -16 DK5ON -19 / - 11 Partial capture
07-25 03:06 40m - / -18 DL3MIB -11 / - 6 Partial capture
07-23 03:36 40m - / -15 S55DX -4 / - 2 Partial capture
07-22 02:51 40m - / - G1CEC -10 / - 2 Partial capture
07-22 02:41 40m - / - F4BYA 0 / - 2 Partial capture
07-22 02:40 40m - / - KB3Z -15 / - 7 Partial capture
07-14 17:59 20m - / - IK4LZH +6 / - 2 Partial capture
07-12 02:18 20m - / +1 RN6MA -23 / - 2 Partial capture
07-12 02:17 20m - / - RX9ABI -6 / - 4 Partial capture
07-12 01:46 20m -20 / - UA9CR - / -15 2 ✓ Closing fragment
07-12 01:44 20m -18 / - RK9UN - / -11 2 Partial capture
07-12 01:42 20m -20 / - PD1HPB - / -15 3 Partial capture
07-12 00:56 20m - / - RA6OY -8 / - 4 Partial capture
07-12 00:34 20m - / -3 RN6MA -22 / - 2 Partial capture
07-10 19:00 20m - / - DL1R +5 / - 8 Partial capture
07-10 00:53 40m - / - F4BYA -2 / - 4 Partial capture
07-09 22:04 20m - / -17 EA3AAY -6 / - 4 ✓ Closing fragment
07-06 23:54 20m - / -16 IQ4JO -8 / - 2 ✓ Closing fragment
07-06 23:16 20m - / -6 I3QDK -10 / - 8 Partial capture
07-06 23:16 20m - / - IK4LZH -7 / - 3 Partial capture
07-03 04:27 20m - / - UA3ZQN +1 / - 3 Partial capture
07-03 04:26 20m -20 / -10 UR5FS -22 / - 4 ✓ Closing observed
07-03 02:43 20m -16 / - RA4ADF - / -17 2 ✓ Closing fragment
07-03 02:41 20m -16 / - KR4JYS - / -3 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
032415 -11 2309  N4YYV DL8TV JN49
020815  -9 1443  N4YYV CT7AUT R-19 (x2)
024345 -16 1403  N4YYV KQ4FMX EL86
025245 -19 1696  N4YYV K1JAK 73 (x2)
031545 -17 1488  N4YYV KC4WCY EL98 (x2)
032915 +19  319  N4YYV UW5ZM KN57
010700 -18 1418  N4YYV W1MLT -21 (x5)
011230  +1 1338  N4YYV EA3AAY JN11
20m 
UTC    dB Audio  Message
201300  +4 1067  N4YYV DM5WGL JO62 (x5)
201715 -19 1625  N4YYV DH2RL JN68
202100 -14 1747  N4YYV TA4YMA KM47
202830 -20 2386  N4YYV IZ1HJU JN44
202930 -10 1119  N4YYV SV9QWC KM25
205045 -14 2366  N4YYV IZ5MJO JN53 (x3)
205245  -4 1623  N4YYV F4JQH JN12
205245 -18 2014  N4YYV IZ5MJO 73
205315  -6 1623  N4YYV F4JQH JN12
10m 
UTC    dB Audio  Message
185345 -15 1296  N4YYV LU8GCJ -19

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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