Sunrise Festival Procedure for use of UHFSDR receiver and HDSDR program for I/Q signal recording and scheduling, by Ward WC0Y

Sunrise Event Station Operation Procedure.docx

This procedure is written to support data collection for the 2022 Sunrise Festival.  It is written for use of a soundcard SDR receiver with an audio interface and for use of the HDSDR program for signal recording and scheduling.

Equipment/Software List:
1.	Receive antenna: 40m length end-fed half-wave (EFHW) dipole with a 49:1 BALIN
2.	Band pass filter:  WB6DHW design set for 30m pass-band   http://wb6dhw.com/BPF.html 
3.	SDR: WB6DHW UHFsdr   http://wb6dhw.com/For_Sale.html#UHFSDR 
4.	10dB BNC attenuator
5.	PC interface: USB Soundblaster Creative Labs THX with audio isolators for I & Q lines
6.	SDR software: HDSDR v2.80   http://hdsdr.de/ 
7.	PC OS: Windows 11

Procedure:
1.	Set up receive system:  EFHW Antenna => Coax => 10dB attenuator => WB6DHW BPF => WB6DHW UHFsdr receiver => USB Soundblaster PC interface => Windows 11 PC running HDSDR
2.	Set up HDSDR
a.	  Select Soundcard for RX Input (F5)
b.	  Set LO Freq = 9,995,000 Hz
c.	  Set Tune Freq = 10,000,000 MHz
d.	  Lock LO and Tune frequencies with mouse right-click
e.	  Set Volume slider = x 0.5, Gain = 15.5dB
f.	  Set AGC Threshold slider to maximum
g.	  Set AGC = Off
h.	  Set up recording schedule (Options => Recording Settings + Scheduler)
i.	    Auto Subdirectory = Each Day
ii.	    Signal IF Enabled, Winrad format, PCM24, no split
iii.	  Recorder Scheduler Enabled
iv.	    Add task schedule lines for desired schedule
1.	LO frequency = 9,995,000
2.	Tune frequency = 10,000,000
3.	Modulation = AM
4.	After recording: No Action
5.	Recording Mode: IF
6.	Record Daily enabled to repeat schedule daily
3.	Re-name files
a.	  Right-click received wav files and rename to requested format according to https://www.hamsci.org/sunrisefest : "W8EDU_WWV_5MHz_2022-04-30_22-08.wav". Use UTC time!
4.	Submit files
a.	  Follow instructions provided on https://www.hamsci.org/sunrisefest