WA4CHJ — 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 Most frequent locator attributed to this token: FM16

Receiver-side FT8 activity involving WA4CHJ, decoded by SO8OO in southeastern Poland. 158 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 20 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-11-01.

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 158 FT8 messages attributed to WA4CHJ as the transmitting token by decoded message structure across 20 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (70%), followed by 40 m (18%) and 20 m (9%). Most decodes (100%) fell within the six-hour window 21:00-03:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (70%); the estimated median was -18 dB.

Overview

158

Messages attributed

UTC dates decoded

Active 15-min windows

-18 dB

Estimated median S/N

Bands

80m · 110 60m · 4 40m · 29 20m · 15

First attributed message: 2026-06-08
Last attributed message: 2026-11-01 00:21 UTC

Observed FT8 message patterns

Attributed sample: 158 messages
Active dates: 20 UTC dates
Estimated median S/N: -18 dB
Estimated 10th-90th percentile: -24 to -13 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 110, moderate (-15 to -9 dB) 45, strong (≥ -8 dB) 3.

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 WA4CHJ in decoded directed-looking exchanges:

G6PWS · England ×2 G4DZE · England ×2 DL1RWN · Fed. Rep. of Germany OH0Z · Aland Islands 4L1FL · Georgia AB8M · United States CR7BRV · Portugal EC1DD · Spain F1PBZ · France K4PWM · United States ON5WR · Belgium TI4LAS · Costa Rica

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 WA4CHJ

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: FM16 · 79 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,551 km (approx.)
Last such locator decoded: 2026-11-01 00:21 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.

Time UTC	Band	WA4CHJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-06 00:51	40m	- / -16	4L1FL	-4 / -	3	✓ Closing fragment
11-05 01:49	60m	- / -13	ON1JP	-19 / -	6	Partial capture
10-29 23:01	160m	- / -17	OH0Z	+6 / -	2	✓ Closing fragment
10-28 02:24	80m	- / -13	OM2WQ	+10 / -	5	✓ Closing fragment
10-28 02:21	80m	-16 / -	KM4BJZ	- / 0	2	✓ Closing fragment
10-27 03:01	160m	- / -15	DL1RWN	+16 / -	2	✓ Closing fragment
10-24 01:58	60m	- / -24	SP9LCW	-10 / -	2	✓ Closing fragment
10-24 01:53	60m	- / -18	G6PWS	+2 / -	7	✓ Closing fragment
10-24 01:12	80m	- / -	F4EGM	0 / -	2	Partial capture
10-12 02:51	80m	- / -10	EC5M	-8 / -	2	✓ Closing fragment
10-12 02:48	80m	- / -25	IZ8XXE	+6 / -	2	✓ Closing fragment
10-12 02:43	80m	- / -21	F4BPO	+10 / -	4	✓ Closing fragment
10-05 22:20	40m	- / -23	ON5WR	-7 / -	16	✓ Closing fragment
10-05 22:18	40m	- / -10	EC1DD	-1 / -	3	✓ Closing fragment
10-03 01:26	40m	-21 / -12	CR7BRV	-8 / -15	3	✓ Full exchange observed
10-02 23:42	40m	-17 / -	KB1FJC	- / -	2	Partial capture
10-02 23:40	40m	-18 / -	AB8M	- / -	4	✓ Closing fragment
10-02 23:38	40m	-18 / -	K4PWM	- / -	3	✓ Closing fragment
10-02 23:32	60m	- / -17	9A7BB	+9 / -	2	✓ Closing fragment
09-29 02:33	160m	- / -26	SV8JE	+13 / -	6	Partial capture
09-15 22:48	80m	- / -19	GI4DOH	-11 / -	2	Partial capture
09-14 22:38	60m	- / -	IW0RGN	+16 / -	2	Partial capture
09-14 22:29	60m	- / -16	G4DZE	-14 / -	4	✓ Closing fragment
09-14 22:26	60m	- / -18	F5RMK	-11 / -	2	✓ Closing fragment
09-11 22:15	60m	- / -14	VE1YX	-6 / -	2	✓ Closing fragment
09-06 23:39	80m	- / -4	EI8GP	-9 / -	4	Partial capture
09-06 23:36	80m	- / -18	EA1AIQ	-2 / -	4	✓ Closing fragment
09-06 23:30	80m	- / -10	EA8AJ	-21 / -	3	✓ Closing fragment
09-03 23:30	40m	- / -	UR4QWW	-5 / -	7	Partial capture
09-03 23:24	40m	-12 / -7	F1PBZ	+2 / -6	3	✓ Full exchange observed
09-03 23:06	60m	- / -	F4AWT	-7 / -	3	Partial capture
09-03 02:18	60m	- / -12	MM0HVU	-9 / -	2	✓ Closing fragment
09-03 02:13	60m	- / -	IW2MYH	-4 / -	3	Partial capture
09-03 01:59	60m	- / -13	DL1UDO	+2 / -	2	✓ Closing fragment
09-03 01:58	60m	- / -14	F5RAV	-9 / -	2	✓ Closing fragment
09-03 01:46	60m	-19 / -18	F1IQH	-10 / -20	5	✓ Full exchange observed
09-03 01:44	60m	-18 / -	VE2LBI	- / +9	2	Partial capture
09-03 01:36	80m	- / -	DO5HOK	-6 / -	2	Partial capture
09-03 01:36	80m	- / -11	F1PBZ	-6 / -	2	Partial capture
09-01 23:55	80m	- / -16	GM6URC	-11 / -	4	Partial capture
09-01 23:55	80m	- / -	SM3ULU	-6 / -	2	Partial capture
09-01 23:46	80m	- / -11	F6CTT	+16 / -	2	✓ Closing fragment
08-28 22:53	80m	- / -24	CT3MD	-14 / -	2	Partial capture
08-25 06:35	40m	- / -	F4BYA	0 / -	3	Partial capture
08-25 06:35	40m	- / -	G6PWS	-10 / -	2	✓ Closing fragment
08-22 00:04	60m	- / -13	LA9GX	+8 / -	4	✓ Closing fragment
08-22 00:03	60m	- / +8	K2MTG	-12 / -	2	✓ Closing fragment
08-20 23:57	60m	- / -	F4FPR	-16 / -	4	Partial capture
08-20 01:52	60m	- / -	F5PBG	-11 / -	2	✓ Closing fragment
08-19 01:01	80m	- / -	EA7AH	-24 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
222345 -12 1129  WA4CHJ ON5WR JO20 (x9)
213245 -16 1137  DK8PR WA4CHJ -22
214845  -1  474  WA4CHJ EB3DBR JN11
002100 -21 1134  KA3QVF WA4CHJ FM16
005145  -4 1249  WA4CHJ 4L1FL -16 (x3)

60m

UTC    dB Audio  Message
015415  +5  671  WA4CHJ G6PWS IO91 (x6)
015815  -7 1034  WA4CHJ SP9LCW R-24 (x2)
014900 -20 1434  WA4CHJ ON1JP -13 (x6)
015715 -22 1871  WA4CHJ WA0YPC R+14

160m

UTC    dB Audio  Message
023330 +16  321  WA4CHJ SV8JE KM08 (x6)
030115 +13 2748  WA4CHJ DL1RWN -15 (x2)
230115  +5 2072  WA4CHJ OH0Z -17 (x2)

80m

UTC    dB Audio  Message
024830  +6 2191  WA4CHJ IZ8XXE -25 (x2)
025145  -9 1806  WA4CHJ EC5M -10 (x2)
011230  +1  826  WA4CHJ F4EGM JN29 (x2)
022145 -14  896  KM4BJZ WA4CHJ R+00 (x2)
022245 -14  897  KB1RCC WA4CHJ FM16
022430 +10 1704  WA4CHJ OM2WQ JN88 (x5)
224500 -10 1337  WA4CHJ MW0AXD IO81

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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