Tour 2

13 February 2026, 10:00 (UTC)

Tour passport

Status: Closed Band: 20 m, 40 m, 80 m Submission deadline: 16 February 2026, 22:00 UTC

Season 1.2026

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Participants 8 total / 3 PRO / 5 Hobbyist

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TX SN0FMT Copied

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Locator KO02md Copied

Reference values

True station values at transmission time.

Carrier frequency (20 m) 14068714.34 Hz

Carrier frequency (40 m) 7038714.34 Hz

Carrier frequency (80 m) 3568714.34 Hz

PPS offset 9.5 ms

3rd pulse duration 29.5 ms

PRO ranking PRO

PRO participants ranked by total points.

Rank	Callsign	Points	FREQ Error (Hz)	PULSE Error (ms)	PPS Error (ms)
#1	RU0LL	165.7	-0.050	+1.15	+0.8
#2	G4BVE	101.3	-0.090	+2.5	+1.5
#3	KB4XR	93.8	-0.910	-0.5	-3.5

Method details — RU0LL

Method summary

The main secret in such measurements is preliminary calibration. You need to determine in advance the values of signal delay to your QTH and the Doppler shift for the current contest time. Knowing these corrections, you need to use them. They will be different for each location.

Method details — G4BVE

Method summary

Audio from Edlad FMD Duo fed to PC and oscilloscope. Frequency offset measured on Spectrum Lab. Peak_f readings written to a file every few seconds and post processed. Pulse width and UTC offset measured on oscilloscope triggered at 1pps from the RFzero. Screen grabs taken from the oscilloscope for later analysis. Latency through the Elad measured by generating local RF pulses from a Siglent SGS1062X generator which is locked to the RFZero 10MHz reference.

Method details — KB4XR

Method summary

Recorded SSB audio, switching in GPSDO +500 Hz for reference. Tuning to CHU Canada for PPS. Signal deep in the noise and recognizable. only briefly over 15 minutes. Using SCILAB tools for bandpass filtering - but extreme multipath fading present. Much of this is a guess.

Carrier (FREQ)

Rank	Callsign	Points
#1	RU0LL	64.2
#2	G4BVE	42.8
#3	KB4XR	18.6

Method details — RU0LL

Method summary

Method details — G4BVE

Method summary

Method details — KB4XR

Method summary

Pulse (PULSE)

Rank	Callsign	Points
#1	KB4XR	58.8
#2	RU0LL	38.5
#3	G4BVE	18.1

Method details — KB4XR

Method summary

Method details — RU0LL

Method summary

Method details — G4BVE

Method summary

PPS (PPS)

Rank	Callsign	Points
#1	RU0LL	63.0
#2	G4BVE	40.4
#3	KB4XR	16.4

Method details — RU0LL

Method summary

Method details — G4BVE

Method summary

Method details — KB4XR

Method summary

Hobbyist ranking Hobbyist

Hobbyist participants ranked by total points.

Rank	Callsign	Points	FREQ Error (Hz)	PULSE Error (ms)
#1	DH4HN	155.6	0.000 EXACT	-0.062
#2	DL7AIS	93.2	-6.260	+0.5
#3	DJ3EI	90.9	-0.113	-1
#4	WA5UCW	63.4	+9.477	-0.59
#5	G0PEB	49.9	-0.388	—

Method details — DL7AIS

Method summary

Cheap rf-generator 1 kHz below, measured. Audio compared to another generator at 1 kHz with oscilloscope in XY mode. Time measured with cursor on scope.

Method details — DJ3EI

Method summary

Calibrate IC-705 frequency via RWM time signal transceiver. Homebrew Software to pull audio from rig and write timestamps for audio parcels as they come in. Precision of timestamps relies only on NTP. A lot of Jupyter Notebook magic to do the actual measurment.

Method details — WA5UCW

Method summary

Used webSDRs to record WAV files. Analyzed WAV file data using Scilab scripts and cellphone audio spectrum analyzer.

Carrier (FREQ)

Rank	Callsign	Points
#1	DH4HN	77.8
#2	DJ3EI	67.4
#3	G0PEB	49.9
#4	DL7AIS	33.8
#5	WA5UCW	21.2

Method details — DJ3EI

Method summary

Method details — DL7AIS

Method summary

Cheap rf-generator 1 kHz below, measured. Audio compared to another generator at 1 kHz with oscilloscope in XY mode. Time measured with cursor on scope.

Method details — WA5UCW

Method summary

Used webSDRs to record WAV files. Analyzed WAV file data using Scilab scripts and cellphone audio spectrum analyzer.

Pulse (PULSE)

Rank	Callsign	Points
#1	DH4HN	77.8
#2	DL7AIS	59.4
#3	WA5UCW	42.2
#4	DJ3EI	23.5

Method details — DL7AIS

Method summary

Cheap rf-generator 1 kHz below, measured. Audio compared to another generator at 1 kHz with oscilloscope in XY mode. Time measured with cursor on scope.

Method details — WA5UCW

Method summary

Used webSDRs to record WAV files. Analyzed WAV file data using Scilab scripts and cellphone audio spectrum analyzer.

Method details — DJ3EI

Method summary

1PPS Offset (informational)

This data is for reference only and does not affect Hobbyist rankings or scoring.

#	Callsign	Measured, ms	Reference, ms	Error, ms
1	DJ3EI	10.74	9.5	+1.24