On May 14, 2006, at 9:56 AM, Slater Tubman wrote:
I hope I have this correctly addressed as I do not send much mail
to reflectors.
I have the following equipment: Powerbook G4, Rigblaster Plus
interface, K2 (SSB, Tuner, NB, KIO2, etc., but no high power)
Question(s)
-is anyone out there running a similar physical setup?
Sorta. I have a K2/100 w SSB, NB, KAT100 and I use a 12" Powerbook G4
and a homebrew interface.
-Successfully?
Yes.
-what program(s) do you use for digital modes?
Cocoamodem! It rocks! Find it here: <http://homepage.mac.com/chen>
-is a Rigblaster necessary to run Mac programs?
You do have to have some sort of interface between the sound ports of
the Mac and the K2.
-if it is, do you run a USB/serial adapter to the serial port on
the Rigblaster as well as the line from the computer USB port to
the KIO2 port on the K2 by the special cable required for that
interface?
It isn't necessary, but may be desirable. I use CocoaPTT to trigger
the rig, and this goes through the USB to a Keyspan serial adapter
with a standard PC DB-9 connection. I have a simple interface between
the DTR line of the serial adapter and the PTT for the K2. It's just
a NPN transistor with a resistor in the base lead. Works great.
In other words, do we need two control cables?
I haven't run into this with Cocoamodem, but with some PC software I
use. My homebrew interface that plugs into the DB-9 serial port on
the PC has an extra DB-9 connector for plugging in the K2 as well, so
I can get the serial interface into the PC as well.
-how do you handle audio in and audio out? What is your cabling
setup for this?
I run a small diameter coax from the microphone jack to my adapter
box. I use a two-conductor shielded cable for the headphone jack to
the adapter box. The adapter has a couple of 25 ohm resistors that
are used to load the audio output of the Mac.
My adapter box is pretty simple. It consists of a 600:600 ohm
transformer for the Mac headphone to rig microphone input, and a
1000:8 ohm transformer for the Mac microphone to rig headphone
output. There's a couple of variable resistors in place so I can
adjust the levels. I also have a stereo headphone jack coming off
that I can listen to the K2 output, too.
Part of the confusion is likely due to my PC sitting here eagerly
awaiting my capitulation and my return to Windoze to run ham radio
digital programs.
I can use the same interface to hook up a Windoze laptop, too.
Bill Coleman, AA4LR, PP-ASEL Mail: [EMAIL PROTECTED]
Quote: "Not within a thousand years will man ever fly!"
-- Wilbur Wright, 1901
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