[ICOM] Older Icoms with a rigblaster

[John Geiger]

Hi Frank,

Thanks for the info.  Is there a way to get the audio
from the computer to the rig and the PTT switching
through the 24 pin molex?

John NE0P

--- "Frank A. Ellis" <w3uhf at yahoo.com> wrote:

> John,
> 
> On the 730 and 740, you must use the compressor,
> which
> goes against all the advice you will ever see
> regarding operating the soundcard digital modes. The
> reason it is OK in this application is that when the
> audio drive to the rig is marginal, the compressor
> is
> serving merely as a preamplifier, as it's
> compression
> threshold has not yet been reached. Even with that,
> you will still need to have almost everything else
> set
> up high, including the Windows audio sliders and the
> rig's mike gain control. I have been doing this for
> a
> long time with the 740 and it works very well. PSK
> IMD
> performance is great if everything is set up and
> adjusted properly.
> 
> On the receive side, I get the pre-controlled AF
> output from the rig's 24-pin molex connector on the
> rear apron. Check your manual for pinout, they are
> all
> the same. Once a harness is made up to use this
> output, it will work on any older ICOM rig that uses
> the 24-pin molex "Rear ACC" connector.
> 
> I have used my digital modes harness (with the
> 24-pin
> Molex and 8-pin mike interface) on all my ICOM rigs,
> including the 730, 740, 745, and 751A. It will also
> work for the 761 as well.
> 
> 73 Frank W3UHF
> 
> 
> --- John Geiger <johngeig at yahoo.com> wrote:
> 
> > I am looking at hooking up my Icom 740 with a
> > rigblaster for the digital modes, and wonder if
> > anyone
> > has used an older Icom in this way.  The problem I
> > am
> > wondering about is how these older Icoms required
> a
> > preamp in the microphone.  Does this cause
> problems
> > when trying to send digital modes through the mic
> > jack?  Do any modifications need to be done?  
> > 
> > ALso, is there a way to hook up a soundcard
> > interface
> > through the ACC jacks on the back of these radios.
> 
> > I
> > think the 740 uses a 16 pin square plug, or
> > something
> > like that.
> > 
> > 73s JOhn NE0P
> > 
> > 
> > 
> > 	
> > 		
> > __________________________________
> > Do you Yahoo!?
> > New and Improved Yahoo! Mail - 100MB free storage!
> > http://promotions.yahoo.com/new_mail 
> > ----
> > Your Moderator: Dick Flanagan K7VC,
> > icom-owner at mailman.qth.net
> > Icom Users Net: Sundays, 1700Z, 14.316 MHz
> > Icom FAQ: http://www.qsl.net/icom/
> > 
> 
> 
> __________________________________________________
> Do You Yahoo!?
> Tired of spam?  Yahoo! Mail has the best spam
> protection around 
> http://mail.yahoo.com 
> ----
> Your Moderator: Dick Flanagan K7VC,
> icom-owner at mailman.qth.net
> Icom Users Net: Sundays, 1700Z, 14.316 MHz
> Icom FAQ: http://www.qsl.net/icom/
> 



		
__________________________________
Do you Yahoo!?
Yahoo! Mail - 50x more storage than other providers!
http://promotions.yahoo.com/new_mail