HF780C — 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: Poland

Receiver-side FT8 activity involving HF780C, decoded by SO8OO in southeastern Poland. 1,453 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 27 UTC dates in the available aggregate history. Observed between 2026-08-29 and 2026-11-03.

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 1,453 FT8 messages attributed to HF780C as the transmitting token by decoded message structure across 27 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (82%), followed by 40 m (18%). Most decodes (56%) fell within the six-hour window 15:00-21:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (75%); the estimated median was -4 dB.

Overview

1,453

Messages attributed

UTC dates decoded

164

Active 15-min windows

-4 dB

Estimated median S/N

Bands

80m · 1,191 40m · 262

First attributed message: 2026-08-29
Last attributed message: 2026-11-03 09:56 UTC

Observed FT8 message patterns

Attributed sample: 1,453 messages
Active dates: 27 UTC dates
Estimated median S/N: -4 dB
Estimated 10th-90th percentile: -13 to +4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 79, moderate (-15 to -9 dB) 288, strong (≥ -8 dB) 1,086.

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 HF780C in decoded directed-looking exchanges:

SP5DFK/QRP · Poland ×60 HF50HSP · Poland ×15 F5OYA/P · France ×15 SQ100PKP · Poland ×13 DL/AD2LX · Fed. Rep. of Germany ×12 UA6Q/M · European Russia ×12 SP100PKP · Poland ×11 SN100PKP · Poland ×10 OL900LTV · Czech Republic ×9 RN3DDW/P · European Russia ×9 R5BM/M · European Russia ×8 YU65AEC · Serbia ×8

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	HF780C S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-03 09:55	40m	-14 / -	PD1EG/P	- / -	2	✓ Closing fragment
10-15 14:07	40m	-14 / -	HF50HSP	-17 / -	3	✓ Closing observed
10-15 14:02	40m	-7 / -	VP9/K0PJH	- / -	3	Partial capture
10-15 14:01	40m	- / -13	R2ZC	-10 / -	2	Partial capture
10-15 14:00	40m	-3 / -	DL9AHB/QRP	- / -	3	✓ Closing fragment
10-15 13:54	40m	-3 / -	HF50HSP	- / -	5	✓ Closing fragment
10-15 13:46	40m	-5 / -	M1DDD/P	- / -	9	✓ Closing fragment
10-14 04:43	80m	0 / -	HF50HSP	- / -	2	✓ Closing fragment
10-14 04:41	80m	-1 / -	RA4P/P	- / -	4	✓ Closing fragment
10-14 04:32	80m	+6 / -	HF50HSP	- / -	2	✓ Closing fragment
10-14 02:13	80m	+11 / -	DB100FT	+11 / -	2	✓ Closing observed
10-14 02:07	80m	- / -	HF50HSP	+10 / -	2	✓ Closing fragment
10-14 01:51	80m	+6 / -	HF50HSP	-1 / -	4	✓ Closing observed
10-14 01:48	80m	- / -	ON3MOH/P	0 / -	2	✓ Closing fragment
10-14 01:43	80m	+6 / -	HF50HSP	- / -	2	✓ Closing fragment
10-13 23:34	80m	- / -	G0IUS	+6 / -	2	Partial capture
10-13 23:30	80m	0 / -	RA4P/P	-7 / -	7	✓ Closing observed
10-13 18:29	80m	- / -	HF50HSP	0 / -	2	✓ Closing fragment
10-13 18:17	80m	-3 / -	SP5DFK/QRP	-11 / -	15	✓ Closing observed
10-13 18:13	80m	0 / -	SP5DFK/QRP	- / -	2	✓ Closing fragment
10-13 17:39	80m	-3 / -	SP5DFK/QRP	+5 / -	11	✓ Closing observed
10-13 17:36	80m	-8 / -	RA7E/P	+10 / -	4	✓ Closing observed
10-13 17:33	80m	-10 / -	RA7E/P	-6 / -	2	✓ Closing observed
10-13 17:31	80m	-3 / -	RA7E/P	-9 / -	2	✓ Closing observed
10-13 17:21	80m	-6 / -	SP5DFK/QRP	+2 / -	5	✓ Closing observed
10-13 03:13	80m	-4 / -	TF/PD9DX	- / -	5	✓ Closing fragment
10-13 02:54	80m	+6 / -	TF/PD9DX	-2 / -	18	✓ Closing observed
10-13 02:51	80m	+3 / -	TF/PD9DX	-4 / -	2	✓ Closing observed
10-12 18:38	80m	-4 / -	F5OYA/P	- / -	3	✓ Closing fragment
10-12 18:33	80m	-6 / -	F5OYA/P	-12 / -	3	✓ Closing observed
10-12 18:28	80m	0 / -	GW0RQC	- / -	2	Partial capture
10-12 18:26	80m	-1 / -	F5OYA/P	- / -	2	✓ Closing fragment
10-12 18:19	80m	-1 / -	F5OYA/P	-3 / -	8	✓ Closing observed
10-12 17:53	80m	-6 / -	HF40BLP	- / -	3	✓ Closing fragment
10-12 05:30	80m	-24 / -	SP5DFK/QRP	+10 / -	2	✓ Closing observed
10-12 05:25	80m	-12 / -	SP5DFK/QRP	- / -	2	✓ Closing fragment
10-12 05:06	80m	+2 / -	SP5DFK/QRP	+3 / -	3	✓ Closing observed
10-12 04:54	80m	-5 / -	SP5DFK/QRP	+4 / -	9	✓ Closing observed
10-12 04:30	80m	-2 / -	F5OYA/P	-11 / -	7	✓ Closing observed
10-12 03:36	80m	-8 / -	SP5DFK/QRP	- / -	2	✓ Closing fragment
10-12 03:28	80m	-5 / -	SP5DFK/QRP	-12 / -	2	✓ Closing observed
10-12 03:19	80m	-5 / -	SP5DFK/QRP	- / -	8	✓ Closing fragment
10-11 16:55	80m	-8 / -	IK3/UY7LA	- / -	5	✓ Closing fragment
10-11 16:41	80m	-11 / -	IK3/UY7LA	-8 / -	10	✓ Closing observed
10-11 16:31	80m	-18 / -	IK3/UY7LA	- / -	2	✓ Closing fragment
10-11 16:27	80m	-13 / -	IK3/UY7LA	- / -	2	✓ Closing fragment
10-11 16:14	80m	-15 / -	RU0LL/P	-10 / -	5	✓ Closing observed
10-11 04:06	80m	-4 / -	R5BM/M	-3 / -	2	✓ Closing observed
10-11 04:01	80m	0 / -	R5BM/M	+4 / -	3	✓ Closing observed
10-11 03:30	80m	+3 / -	F/G0LRH	- / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
140845 -11 1846  CQ HF780C (x2)
180615  -8 1998  HF780C P4/WE9V 73
180715  -6 1495  HF780C SP9DPM/P RR73
181045  +7  662  HF780C UN9LCW/QRP 73
181515  -8 2028  HF780C F4MXT/P 73
182115 -13 2135  HF780C UD6AOP/0 73
160445 -19 1448  HF780C 9A60CBM 73
160945  -7 1450  HF780C IK2VFR/P RR73
162045  +2 1589  HF780C TA4/DD1WT 73
213845 -17 2301  <HF780C> SV1AIN -12
213845 -17 1600  HF780C LZ911TD RR73
214045 -19 2301  HF780C OZ5ADW/P RR73
095545 -16 1987  PD1EG/P HF780C (x2)

80m

UTC    dB Audio  Message
043545  +9  904  CQ HF780C (x7)
044115  -3  904  HF50HSP HF780C RR73
044145  +3  905  RA4P/P HF780C RR73 (x2)
044245  -2  904  <MW7TTA> HF780C
044345  +0  904  HF50HSP HF780C 73
044415  -3  905  RA4P/P HF780C
044445  -1  904  HF50HSP HF780C
044515  +0  905  RA4P/P HF780C

160m

UTC    dB Audio  Message
171000 -20 2068  HF780C <...> 73

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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