N4HB — 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: United States

Receiver-side FT8 activity involving N4HB, decoded by SO8OO in southeastern Poland. 138 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 12 UTC dates in the available aggregate history. Observed between 2026-07-14 and 2026-10-03.

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 138 FT8 messages attributed to N4HB as the transmitting token by decoded message structure across 12 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (55%), followed by 80 m (41%) and 20 m (4%). 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

138

Messages attributed

UTC dates decoded

Active 15-min windows

-10 dB

Estimated median S/N

Bands

80m · 56 40m · 76 20m · 6

First attributed message: 2026-07-14
Last attributed message: 2026-10-03 01:10 UTC

Observed FT8 message patterns

Attributed sample: 138 messages
Active dates: 12 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -20 to -3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 32, moderate (-15 to -9 dB) 56, strong (≥ -8 dB) 50.

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:

LZ1KU · Bulgaria ×2 KD8ECZ · United States ×2 Z62NS · Republic of Kosovo ×2 CR7CDR · Portugal CT1FPQ · Portugal G7RAU · England LY7M · Lithuania OH0Z · Aland Islands UT5ZC · Ukraine 9A9TT · Croatia CO6HZ · Cuba CR7BRV · Portugal

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
11-02 01:42	160m	- / -20	EA4HPY	-7 / -	3	Partial capture
11-02 01:39	160m	- / -15	G7RAU	-6 / -	6	✓ Closing fragment
10-29 00:33	160m	- / -	F8BON	-20 / -	2	Partial capture
10-29 00:12	160m	- / -15	LZ1KU	-6 / -	2	✓ Closing fragment
10-29 00:06	160m	- / -13	LY7M	+18 / -	3	✓ Closing fragment
10-28 23:58	160m	- / -18	LY7M	+10 / -	2	Partial capture
10-28 01:01	160m	- / -12	OH0Z	+1 / -	3	✓ Closing fragment
10-28 00:03	160m	- / -18	F1PBZ	+2 / -	4	Partial capture
10-27 15:50	10m	- / -24	CR7CDR	-15 / -	3	✓ Closing fragment
10-27 00:30	160m	- / -22	CT1FPQ	-2 / -	2	✓ Closing fragment
10-03 01:11	40m	- / -11	CR7BRV	-6 / -	2	✓ Closing fragment
09-26 00:11	80m	- / -	OH5KNL	-4 / -	4	Partial capture
09-26 00:08	80m	-13 / -6	F5PBG	-7 / -	4	✓ Closing observed
09-26 00:08	80m	- / -20	S57TW	0 / -	2	✓ Closing fragment
09-25 23:57	80m	-16 / -	J88IH	- / -16	2	✓ Closing fragment
09-25 23:57	80m	- / -	F5PBG	-10 / -	4	Partial capture
09-25 23:56	80m	-15 / -19	Z62NS	-2 / -25	13	✓ Full exchange observed
09-24 00:42	80m	-6 / -15	RC6OU	+5 / -10	5	✓ Full exchange observed
09-24 00:33	80m	-8 / -7	DG3YEV	+10 / -21	4	✓ Full exchange observed
09-24 00:26	80m	-12 / -7	SP6NIV	+1 / -12	6	✓ Full exchange observed
09-24 00:26	80m	- / -13	UA4UAR	-4 / -	5	Partial capture
09-24 00:25	80m	-16 / -12	EW8AAC	-10 / -16	4	✓ Full exchange observed
09-24 00:25	80m	-15 / -12	RX6DA	-1 / -	2	✓ Closing observed
09-23 23:59	80m	-15 / -14	RN2F	-1 / -	6	✓ Closing observed
09-23 23:53	80m	-17 / -	S56EPX	-15 / -25	5	Partial capture
09-23 23:49	80m	-14 / -12	UA4FKT	+3 / -	4	✓ Closing observed
09-23 23:48	80m	-20 / -18	RQ6A	0 / -	5	✓ Closing observed
09-23 23:46	80m	- / -	G6PWS	-10 / -	8	Partial capture
09-23 23:45	80m	- / -	RQ6A	-5 / -	2	Partial capture
09-23 23:45	80m	-15 / -11	IK1MJL	+1 / -15	3	✓ Full exchange observed
09-23 23:45	80m	- / -	LB9VH	-22 / -	2	Partial capture
09-23 23:43	80m	-14 / -2	LZ1KU	+8 / -8	4	✓ Full exchange observed
09-23 23:38	80m	- / -6	ES4BW	+5 / -	7	Partial capture
09-23 01:19	80m	+1 / -	RI1FJZ	- / -19	4	Partial capture
09-23 01:12	80m	- / -	EU7FBB	+5 / -	7	Partial capture
09-23 00:08	40m	-12 / -	KE2IMW	- / -17	3	✓ Closing fragment
09-23 00:07	40m	-10 / -	UB3BDJ/6	- / -5	2	Partial capture
09-22 23:48	80m	- / -	SM3ULU	-7 / -	3	Partial capture
09-22 23:46	80m	- / -13	DL4GCJ	+1 / -	6	✓ Closing fragment
09-22 23:44	80m	- / -16	OK1SI	+17 / -	7	✓ Closing fragment
09-22 23:43	80m	- / -	DL4GCJ	+8 / -	2	Partial capture
09-22 23:43	80m	- / -17	IQ4JO	+9 / -	3	✓ Closing fragment
09-22 23:41	80m	-16 / -15	IK0CHU	-1 / -	6	✓ Closing observed
09-22 23:38	80m	-20 / -14	LA4YGA	+4 / -	4	✓ Closing observed
09-22 23:38	80m	- / -13	OK1XD	+12 / -	4	✓ Closing fragment
09-22 23:38	80m	- / -	UA4FKT	+10 / -	2	Partial capture
09-22 23:37	80m	- / -16	DO3BOX	-1 / -	2	Partial capture
09-22 23:37	80m	- / -	G6PWS	-1 / -	7	Partial capture
09-22 23:37	80m	- / -	LY1VR	+15 / -	4	Partial capture
09-22 23:35	80m	- / -	EU7FBB	+1 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
000700 +23 1841  N4HB LY7M -13 (x2)
001200  -3 1594  N4HB LZ1KU R-15 (x2)
003330 -17 1701  N4HB F8BON IN86 (x2)
013900  -6 1619  N4HB G7RAU IN79 (x6)
014230  -6 1200  N4HB EA4HPY R-20 (x3)

10m

UTC    dB Audio  Message
155000 -13 1500  N4HB CR7CDR IM58 (x3)

40m

UTC    dB Audio  Message
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)
000730  -8 2069  UB3BDJ/6 N4HB -05 (x2)
000830 -11 2070  KE2IMW N4HB -17 (x3)
011030 -20 2144  RX6DA N4HB -22
011115  -2 1055  N4HB CR7BRV R-11 (x2)

80m

UTC    dB Audio  Message
235900 -11  852  N4HB F5PBG IN78
235930  -5 1429  N4HB Z62NS R-21
235930 -10  852  N4HB F5PBG IN78
235945 -14  802  Z62NS N4HB RR73
000000  -2 1429  N4HB Z62NS 73
000800  -7 2445  N4HB S57TW R-20 (x2)
000830  -4  851  N4HB F5PBG IN78 (x2)
000915 -13  802  F5PBG N4HB RR73
000930  -8  851  N4HB F5PBG 73
001130  -7 2213  N4HB OH5KNL KP30 (x4)

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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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