DIGTRX Digital SSTV Ver 2.08 3 Dec.2004 with RIGblaster
(by
JH3ECA) (W8SH-VE3EGO 1969)
Hardware:
A RIGblaster (1ea), Soundcard speaker
cables: Radio Shack-42 2387 (2ea).
RIGblaster:
Strap P1 to match your radio's
Microphone. (i.e. RJ45 IC706 page 9). Set Audio Level
Control full clockwise.
Cable RIGblaster to radio and computer, as shown in RIGblaster
manual’s hookup
diagram. The RIGblaster interface will allow computer speakers to
continue to
operate for music etc.
Note: Don't use low impedance un-amplified
speakers.
Windows Sound card setup:
Master Volume: Master Volume to 1/3 of
the way up - Balance slider to the center
Wave Volume to 1/3 of the way up - Balance slider to the
center
Line In
Volume to 2/3 of the way up - Balance slider to the center
Microphone Volume to 1/3
of the way up
PC Speaker Volume to 2/3
of the way up
Recording Controls: Line In SELECT -
Volume to 1/3 of the way up - Balance slider to the center
Note: Turn the computer speaker volume control
knob most of the way, but not all of the way down.
Radio setup:
Set all IF Filters to OFF (or as wide as
possible)
Set Audio RF to MAX
Set Squelch to minimum
Set VFO to: 14.233
Set Transmitter output power to ¼ manufacturer’s
rated RF power output, 20 watts or
less is a good operating setup for a 100
watt transmitter.
Set Mode to USB
Set Processor to OFF and SWR ON
Adjust Tuner for 1:1
Set ALC to ON and SWR OFF
Speak into the microphone, adjusting MIC
control so that ALC doesn’t occur above the
ALC Zone indicator.
(use a Dummy Load)
Connect antenna (Dummy Load will give bad
ALC reading in Digital setup)
Adjust Tuner for 1:1
Click on TX button (transmission starts).
Adjust RIGblaster Audio Level Control,
stopping as transmitter output power reaches MAX
(ie. 20 watts) keep an eye on your ALC so
that ALC does not occur; run with NO ALC
indicating
occurring; any ALC indicating, results in your TX Signal being distorted,
and causing
harmonics.
Note: The RIGblaster Audio Level Control is
the most precise way to adjust the
Soundcard output voltage into the
radio. The Microsoft Volume controls were
designed to
vary the voltage, through a range of reasonable outputs for Speakers;
They were not designed to be adjusted
so precisely as to be reliable set to
5 millivolts.
ALC can remain (on) to control drive
limit.
Recommended frequencies:
14.233
Setup:
Click JP2
Adjust Jp2 file size slider to = 9800
bytes
Click AUTO
RX (Auto record)
Save RX File
Open RX File
Codify blocks
Send bbreport
TX replay
RX and WF - -40db
PTT cxontrol
setup
Sound Card Device: DEFAULT
CALL - Waterfal:
Select Use waterfall ID
Select Add ID
Options:
RX ON
Accept bad blocks
Use Ir FanView
Overwrite repeated RX File
Ref:
http://planeta.terra.com.br/lazer/py4zbz/hdsstv/teste1.html#dixtra