N4HB — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States

Receiver-side FT8 activity involving N4HB, decoded by SO8OO in southeastern Poland. 92 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-07-14 and 2026-09-16.

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 92 FT8 messages attributed to N4HB as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (76%), followed by 80 m (17%) and 20 m (7%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-10 dB

Estimated median S/N

Bands

80m · 16 40m · 70 20m · 6

First attributed message: 2026-07-14
Last attributed message: 2026-09-16 00:44 UTC

Observed FT8 message patterns

Attributed sample: 92 messages
Active dates: 6 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -20 to -4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 19, moderate (-15 to -9 dB) 35, 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 N4HB in decoded directed-looking exchanges:

KD8ECZ · United States ×2 UT5ZC · Ukraine 9A9TT · Croatia CO6HZ · Cuba D2ACE · Angola EA1Y · Spain ER3PM · Moldova G5TV · England HI3A · Dominican Republic IW2MYH · Italy KA0BWH · United States KB1GTG · United States

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.

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	N4HB S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 01:03	160m	- / -17	UT5ZC	+16 / -	7	✓ Closing fragment
09-16 01:04	40m	- / -11	VP2MAA	-4 / -	2	✓ Closing fragment
09-16 00:43	40m	-8 / +5	PI4DX	+2 / -3	3	✓ Full exchange observed
09-15 01:02	40m	-8 / -	KD8ECZ	- / -4	2	✓ Closing fragment
09-15 01:00	40m	-12 / -	KB1GTG	- / 0	2	✓ Closing fragment
09-15 00:57	40m	-12 / +8	HI3A	-6 / -	3	✓ Closing observed
09-15 00:34	40m	-6 / -9	ER3PM	-21 / -5	3	✓ Full exchange observed
09-15 00:28	40m	-6 / -	RD1A/7	- / 0	3	Partial capture
09-15 00:26	40m	-7 / -	IW2MYH	- / -16	2	✓ Closing fragment
09-15 00:25	40m	-9 / -	9A9TT	- / -23	2	✓ Closing fragment
09-13 23:55	40m	-12 / -	KA0BWH	- / -	2	✓ Closing fragment
09-13 23:54	40m	-10 / -	SV1MOZ	-12 / -25	3	Partial capture
09-13 23:53	40m	-9 / -	D2ACE	- / -15	2	✓ Closing fragment
09-13 23:43	40m	-22 / -13	SV9QWC	-8 / -11	6	✓ Full exchange observed
09-13 23:39	40m	-22 / -	OE8DDX	- / -25	2	Partial capture
09-13 23:38	40m	-20 / -	OA4ENG	- / -25	2	✓ Closing fragment
09-13 21:22	40m	- / -17	G5TV	-4 / -	3	✓ Closing fragment
09-06 01:52	40m	- / -25	RA3QM	+7 / -	3	✓ Closing fragment
09-06 01:51	40m	- / -14	IZ5HLP	-3 / -	10	Partial capture
08-28 01:59	80m	-16 / -11	DM5KM	+17 / -13	5	✓ Full exchange observed
08-28 01:57	80m	-20 / -	KD8ECZ	- / -24	2	✓ Closing fragment
08-28 01:56	80m	-18 / -	W4KWS	- / -16	2	✓ Closing fragment
08-28 01:55	80m	-22 / -3	MI7XHT	+3 / -20	4	✓ Full exchange observed
08-28 01:48	80m	- / -	UA4FKT	-2 / -	4	Partial capture
08-28 01:47	80m	-18 / -13	OK1DX	+12 / -16	4	✓ Full exchange observed
08-28 01:06	40m	- / -	SV1MOZ	-8 / -	4	Partial capture
08-28 01:03	40m	-6 / -14	R2BQM	+12 / -16	7	✓ Full exchange observed
08-28 01:03	40m	-9 / -17	UR9QQ	-16 / -25	8	Partial capture
08-28 01:01	40m	-5 / -	KC5CD	- / 0	2	✓ Closing fragment
08-28 00:56	40m	-3 / -	DL/AD2LX	- / -1	10	Partial capture
08-28 00:46	40m	-10 / -	<...>	- / -1	19	Partial capture
08-28 00:41	40m	-12 / -	<...>	- / -2	5	Partial capture
08-28 00:27	20m	-3 / -	7Z1BQ	- / -1	2	Partial capture
08-28 00:25	20m	-8 / -	<...>	- / -10	4	Partial capture
08-09 01:24	80m	-22 / -	KE1VT	-16 / -	3	✓ Closing observed
08-08 22:55	40m	- / -16	<...>	-12 / -	3	Partial capture
07-14 00:52	80m	- / -	RO2X	0 / -	4	Partial capture
07-14 00:52	80m	- / -	SP9MOA	-6 / -	2	Partial capture
07-14 00:51	80m	-12 / -10	UW5KW	+12 / -6	6	✓ Full exchange observed
07-14 00:51	80m	-8 / -8	RC6OD	+6 / -11	4	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
004815 +10  498  N4HB PA3HP R-16
010345 +12 1088  N4HB UT5ZC -17 (x7)

40m

UTC    dB Audio  Message
005730 -12 2294  HI3A N4HB RR73
005745  -6  414  N4HB HI3A 73
005800 -12 2294  ZP6TT N4HB -21
010015 -13 2294  KB1GTG N4HB +00 (x2)
010215  -8 2294  KD8ECZ N4HB -04 (x2)
004300  -8 2696  PI4DX N4HB -03
004345  +3 2327  N4HB PI4DX R+05 (x2)
004445  -8 2697  WB8UPO N4HB +11
004630 -19 1359  N4HB CO6HZ RR73
010330  -8  697  N4HB KP4QVQ 73
010415  -5  607  N4HB VP2MAA R-11 (x2)

80m

UTC    dB Audio  Message
014915  -4 1709  N4HB UA4FKT LO23 (x2)
015515 -24 1708  MI7XHT N4HB -20
015530  +3 2602  N4HB MI7XHT R-03
015545 -22 1708  MI7XHT N4HB RR73 (x2)
015645 -24 1708  W4KWS N4HB -16 (x2)
015745 -21 1708  KD8ECZ N4HB -24 (x2)
015900 -16 1708  DM5KM N4HB -13 (x2)
015945 +16  514  N4HB DM5KM R-11 (x3)

20m

UTC    dB Audio  Message
002500  -7 1854  <...> N4HB -10 (x4)
002745  -2 2276  7Z1BQ N4HB -01 (x2)

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.

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