UA4NF — 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: European Russia Most frequent locator attributed to this token: LO68

Receiver-side FT8 activity involving UA4NF, decoded by SO8OO in southeastern Poland. 52 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-10-22.

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 52 FT8 messages attributed to UA4NF as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (46%), followed by 80 m (27%) and 40 m (27%). Several six-hour UTC windows tied for the largest share (67%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-13 dB

Estimated median S/N

Bands

80m · 14 40m · 14 20m · 24

First attributed message: 2026-06-08
Last attributed message: 2026-10-22 03:42 UTC

Observed FT8 message patterns

Attributed sample: 52 messages
Active dates: 8 UTC dates
Estimated median S/N: -13 dB
Estimated 10th-90th percentile: -17 to -8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 13, moderate (-15 to -9 dB) 31, strong (≥ -8 dB) 8.

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 UA4NF in decoded directed-looking exchanges:

C5R · The Gambia R6BH · European Russia DD6AJ · Fed. Rep. of Germany DK8CX · Fed. Rep. of Germany RA6MQ · European Russia RK3ZB · European Russia RN7T · European Russia

Most frequent locator attributed to UA4NF

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: LO68 · 31 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,215 km (approx.)
Last such locator decoded: 2026-10-22 03:41 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 UTC	Band	UA4NF S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-22 03:40	40m	-12 / -	C5R	- / -11	4	✓ Closing fragment
10-22 03:31	40m	-9 / -	TO4A	- / +1	4	Partial capture
10-22 03:22	40m	-13 / -6	TO4A	+8 / -	3	Partial capture
10-21 16:28	80m	- / -	DK2MAX	-6 / -	4	Partial capture
10-21 16:23	80m	-15 / -12	RA6MQ	-21 / -22	8	✓ Full exchange observed
10-21 16:21	80m	-13 / -16	DD6AJ	+2 / -18	10	✓ Full exchange observed
10-21 16:20	80m	-8 / -9	RN7T	-7 / +1	5	✓ Full exchange observed
10-21 16:20	80m	- / -	DD8BA	-2 / -	2	Partial capture
10-21 16:19	80m	-13 / -6	DK8CX	-1 / -20	5	✓ Full exchange observed
10-21 15:15	80m	- / -10	RK3ZB	-6 / -	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
160715 -12 1854  UA4NF R6BH RR73
032245 -15  809  TO4A UA4NF LO68 (x2)
032530  +8  389  UA4NF TO4A -06
033145  -8  806  TO4A UA4NF R+01 (x4)
034045 -12  927  C5R UA4NF LO68 (x4)

80m

UTC    dB Audio  Message
162345 -13 1146  DD6AJ UA4NF RR73
162400 -24 1938  UA4NF RA6MQ -12
162400  +5 1146  UA4NF DD6AJ 73
162445 -16 1146  CQ UA4NF LO68
162530 -20 1938  UA4NF RA6MQ -10
162545 -12 1146  RC9WC UA4NF R+12
162600 -19 1938  UA4NF RA6MQ -10 (x2)
162645 -15 1145  RA6MQ UA4NF R-22
162700 -19 1938  UA4NF RA6MQ RR73 (x2)
162830  -7  718  UA4NF DK2MAX JN58 (x4)

20m

UTC    dB Audio  Message
101145 -14  996  <...> UA4NF LO68

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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