R3ZCS — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

41 messages

Active dates

5 UTC dates

Estimated median S/N

-5 dB

Estimated 10th-90th percentile

-8 to -1 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 3, strong (≥ -8 dB) 38.

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 R3ZCS 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 R3ZCS

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

KO80 · 21 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,082 km (approx.)

Last such locator decoded

2026-09-15 18:31 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.

Recent FT8 messages decoded at SO8OO

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

UTC    dB Audio  Message
181945  -3 1905  R3ZCS DK7ZT -04
182530  -4 1674  ON3CL R3ZCS KO80
182700  -7 1675  RT8T R3ZCS KO80 (x2)
182815 -11 2665  R3ZCS RT8T -16
182830  -4 1674  RT8T R3ZCS R-09
182845 -11 2665  R3ZCS RT8T -13
182900  -9 1674  RT8T R3ZCS R-09 (x4)
183100  -5 1674  RA2FCF R3ZCS KO80 (x4)

UTC    dB Audio  Message
172115 -10 1781  R3ZCS UD8S -19 (x2)
183630 -10 2277  R3ZCS SP7ROM JO91
183730  +4  643  R3ZCS RY3F -04
183730  +6 1206  R3ZCS RW2Z KO81
183800  -3  643  R3ZCS RY3F -04
193015 +10 1972  R3ZCS 9A5E -11 (x2)
193130 -13 1642  UA4FKT R3ZCS -06
193145 +11 1643  R3ZCS UA4FKT R-04 (x2)
193245  -3 1643  R3ZCS RN6HK LN14

UTC    dB Audio  Message
141745  +0 2439  R3ZCS I1RJP JN45 (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.