K4VHE — 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: United States Most frequent locator attributed to this token: EM64

Receiver-side FT8 activity involving K4VHE, decoded by SO8OO in southeastern Poland. 157 FT8 messages attributed to this token as transmitter, on 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-08-26.

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 157 FT8 messages attributed to K4VHE as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Most decodes (99%) fell within the six-hour window 22:00-04:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -15 dB.

Overview

157
Messages attributed
5
UTC dates decoded
35
Active 15-min windows
-15 dB
Estimated median S/N

Bands

20m · 157
First attributed message: 2026-06-07
Last attributed message: 2026-08-26 01:59 UTC

Observed FT8 message patterns

Attributed sample
157 messages
Active dates
5 UTC dates
Estimated median S/N
-15 dB
Estimated 10th-90th percentile
-21 to -5 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 77, moderate (-15 to -9 dB) 51, strong (≥ -8 dB) 29.

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 K4VHE in decoded directed-looking exchanges:

Most frequent locator attributed to K4VHE

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
EM64 · 96 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,314 km (approx.)
Last such locator decoded
2026-08-26 01:59 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 UTCBandK4VHE S/NCounterpartCounterpart S/NMsgsCapture
10-12 03:39 40m - / - SV5BYP -5 / - 2 Partial capture
10-05 02:54 40m - / -11 ON3ANY +3 / - 4 ✓ Closing fragment
10-05 02:04 40m - / - SV4LGX -15 / - 3 ✓ Closing fragment
10-03 03:15 40m - / -15 G8KHF -16 / - 2 ✓ Closing fragment
10-03 00:38 40m - / -19 PD2ET -4 / - 7 Partial capture
10-03 00:21 40m - / -15 K2YWE -14 / - 2 ✓ Closing fragment
10-03 00:17 40m - / - EB3JT -3 / - 4 Partial capture
10-02 23:49 40m - / - DL3MIB +7 / - 7 Partial capture
09-26 03:17 40m - / -11 IU5SCG -6 / - 3 ✓ Closing fragment
09-26 03:11 40m - / - EB3JT -12 / - 4 Partial capture
09-22 00:06 40m - / - MI7XHT -16 / - 2 Partial capture
09-21 23:59 40m - / -15 IZ5WTV +4 / - 11 ✓ Closing fragment
09-21 23:53 40m - / -24 ER3PM -18 / - 2 Partial capture
09-12 01:48 40m - / -10 CR7BRV -8 / - 6 ✓ Closing fragment
09-12 01:26 40m - / - EB3JT -4 / - 7 Partial capture
08-26 01:35 20m - / -16 7Z1DR -6 / - 4 ✓ Closing fragment
08-26 01:28 20m -18 / - K2GSC - / -5 2 ✓ Closing fragment
08-26 01:20 20m - / -7 WA1W -16 / - 3 ✓ Closing fragment
08-26 01:17 20m - / -10 TI8/W2RE -12 / - 2 Partial capture
08-26 00:31 20m -12 / - UN7JO - / - 2 Partial capture
08-26 00:29 20m -9 / - VE7ZAX - / - 3 Partial capture
08-26 00:27 20m -18 / - KJ7KJK - / -15 4 ✓ Closing fragment
08-26 00:25 20m -6 / - N1DQD -6 / - 3 ✓ Closing observed
08-26 00:22 20m - / -13 KC1ZWW -10 / - 2 ✓ Closing fragment
08-25 23:50 20m -14 / - K4TI - / - 2 Partial capture
08-25 23:48 20m -7 / - W9FST - / -4 2 ✓ Closing fragment
08-25 23:46 20m -15 / - 9A3TY - / - 2 ✓ Closing fragment
08-25 23:19 20m - / -13 EA1JG -11 / - 3 ✓ Closing fragment
08-23 04:25 20m - / -16 EN35UKR -9 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
031500 -16  867  K4VHE G8KHF -15 (x2)
020300  -8 2677  K4VHE MI7XHT IO64
020430 -18  238  K4VHE SV4LGX RR73 (x3)
020830  -9 2066  K4VHE MI7XHT IO64
025445  +2  535  K4VHE ON3ANY -11 (x4)
015830  -9 1309  K4VHE BA9QQB/R -10
033915  -6  856  K4VHE SV5BYP KM46 (x2)
040115 -20 2388  K4VHE HA1SU -16
20m 
UTC    dB Audio  Message
004045 -20 2115  K4VHE W1HS RR73
011730 -12 2472  K4VHE TI8/W2RE -10 (x2)
012015 -16 2143  K4VHE WA1W -07 (x3)
012815 -18 1871  K2GSC K4VHE R-05 (x2)
012930 -22 2150  KD6HON K4VHE EM64
013515  -8  627  K4VHE 7Z1DR -16 (x4)
015745 -20 2097  HC7AE K4VHE EM64
015945 -20 1833  A41MC K4VHE EM64

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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