UA4HBJ — reception at SO8OO

Observed FT8 message patterns

Attributed sample

1,765 messages

Active dates

94 UTC dates

Estimated median S/N

-10 dB

Estimated 10th-90th percentile

-18 to -1 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 400, moderate (-15 to -9 dB) 627, strong (≥ -8 dB) 738.

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 UA4HBJ 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 UA4HBJ

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

LO53 · 1,185 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

2,036 km (approx.)

Last such locator decoded

2026-11-04 15:37 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
153630 -12 1141  CQ UA4HBJ LO53
153700 -10 1141  RA6FTH UA4HBJ LO53
153745  -6 2444  UA4HBJ F1PBZ -07
153800 -16 1140  RT8T UA4HBJ -07 (x2)
154715  -5 1140  UA4HBJ PD7BDN JO22
154715 +11  593  UA4HBJ HB9ELE JN47 (x3)
164945 -20 1140  UB8SII UA4HBJ RR73
165130 -13  793  UA4HBJ UA9XL/P -10
165145 -15 1141  UB8SII UA4HBJ 73
165200 -14  793  UA4HBJ UA9XL/P -10
165245 -15 1141  UA9XL/P UA4HBJ R-04
165730  +6 2674  UA4HBJ YO1BRANCUSI -15

UTC    dB Audio  Message
163345 -10  999  UA4HBJ RZ3DC KO85 (x6)
172015 -17 1452  UA4HBJ RJ3DC KO95
172730 -18 1441  UA4HBJ RK3AW/P -09 (x2)
172815 -16 1452  UA4HBJ RJ3DC KO95
173215  -6 2402  UA4HBJ OH5KNL -19 (x2)
173530 -17 1026  UA4HBJ R2GCV KO92
174545  +7 1041  UA4HBJ RZ3DW -11 (x2)

UTC    dB Audio  Message
171930  -9 2475  UA4HBJ R3THJ RR73
171415 -24 1304  CQ UA4HBJ LO53                        a1
171930  -7 1320  UA4HBJ RL3T +05 (x2)
182830 -19 1504  UA4HBJ R4SCQ RR73
183215 -15 1144  UA4HBJ RA1QX -13
181900 -14 2402  UA4HBJ R4HMI KO85 (x3)
182115  -7 1113  UA4HBJ R2BIU -06
172730  -2  830  UA4HBJ UA2FBW KO04 (x3)
174545  +0 1412  UA4HBJ OE1RDU/3 -09
175500  +3 1305  UA4HBJ R6DVS RR73

UTC    dB Audio  Message
083315 +13  491  UA4HBJ IK4LZH JN54 (x7)
113145 -21 1596  UA4HBJ CR7BUW IM58

UTC    dB Audio  Message
145730 -10  927  CQ UA4HBJ LO53 (x2)
145815  +8  928  UA4HBJ TA3STR KM39
145830 -20  926  TA3STR UA4HBJ -15
145845 +10  927  UA4HBJ TA3STR -17
145900 -22  925  TA3STR UA4HBJ RR73
145915  +7  927  UA4HBJ TA3STR RR73
150000 -19  925  CQ UA4HBJ LO53 (x2)
164045 -10 1003  SM7JKW UA4HBJ RR73
164230 -11 1002  CQ UA4HBJ LO53 (x2)
164330 -16 1001  DF8MH/P UA4HBJ LO53 (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.