PD4HT — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

1,166 messages

Active dates

81 UTC dates

Estimated median S/N

-13 dB

Estimated 10th-90th percentile

-21 to -2 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 449, moderate (-15 to -9 dB) 418, strong (≥ -8 dB) 299.

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 PD4HT 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 PD4HT

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

JO23 · 595 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,219 km (approx.)

Last such locator decoded

2026-09-15 14:02 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
134715 -10 1875  PD4HT OK1XBF RR73
134815 -24 2037  DL6CMF PD4HT JO23
134830 -12 2037  PD4HT DL6CMF -01
134845 -16 2037  DL6CMF PD4HT R-05
134900 -12 2037  PD4HT DL6CMF RR73
134915 -20 2038  DL6CMF PD4HT 73
135730 -11 2676  CQ PD4HT JO23
135745 -11  783  PD4HT DG9LBD +07
135800 -12  783  DG9LBD PD4HT R-06
135815 -14  783  PD4HT DG9LBD RR73
135930 -19 1813  OE3FVU PD4HT JO23 (x5)

UTC    dB Audio  Message
084500 -13 1891  3A2MW PD4HT 73
084715  -3 1819  HB9EXE PD4HT R-12
084815  -8 1925  CN8NS PD4HT JO23 (x3)
085230  -4 2356  PD4HT F1THK -10 (x2)
085545 -12 1657  DB2VS PD4HT JO23
085600 -14 1658  PD4HT DB2VS +01
085615 -15 1657  DB2VS PD4HT JO23
085630 -15 1658  PD4HT DB2VS +01 (x2)
090300 +11  606  SQ5WBW PD4HT JO23 (x3)

UTC    dB Audio  Message
175600 -17 1540  CT7AUT PD4HT 73
191845 -10 2535  CE3SOC PD4HT JO23
192545 -19 1220  LU2EI PD4HT JO23
083200  -1 1439  PD4HT IK7IMK RR73
154115  -5  653  OE3UKW PD4HT JO23
154615 -15 2143  UX2SB PD4HT 73
154815  -9 2374  SV1CQN PD4HT JO23 (x2)
134145 -21 1937  PD4HT EA3HKA +10 (x2)
134845 -20 1839  PD4HT EB3JT 73
082900 -13 2283  PD4HT HB9ACA +04 (x2)
083645 -22 1641  PD4HT IN3IZQ -14 (x2)

UTC    dB Audio  Message
215330 -18 1237  PD4HT CS2WWA RR73

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.