[50mhz] Re: [Moon-net] IC-746 Sequencer Question

Wed, 12 Feb 2003 11:16:31 -0700

Joe Hutcheson wrote:
> 
> Thanks, Lance.  I have the sequencer ready to go -- just trying to decide
> how best to control the 746.  My ideal would be to interrupt RF somewhere so
> that I can use regular PTT, semi-break-in CW, etc., using amplifier line
> from teh scvr to switch teh sequencer, which, in turn, would key the RF.  I
> can use RigBlaster for digital modes, but not sure that's a viable approach
> for CW.
> 

Hi Joe,

I turn on the sequencer using either with the RTS line from my computer serial port,
a foot switch or a manual toggle switch build onto the front panel of the box
housing the sequencer.  I do not use VOX on SSB or Break-in on CW.  That way, the
ONLY way my IC746 can be turned on is through the sequencer, which enables the IC746
PTT line when it is safe to begin transmitting.

The RigBlaster is FB for interfacing the audio, but you still need to bring your
serial port RTS line out and have it turn on your sequencer.  You also may be
interested in looking at some of the computer options available for sending CW.  I
still usually use my footswitch and then start sending manually with a key. 
However, I have the option of typing CW from my keyboard, and if I do that the
computer automatically turns on the sequencer first, and then begins sending the
CW.  This function is one of the many optional features included in my logging/rig
control program, TRX-Manager.  For the first time, it is possible to send CQ on CW
in whatever programmable sequences you wish (even accurately timed sequences, so as
EME), and have the sequencer automatically turn on before the CW transmissions
automatically begin.  Of course, at any time, I can interrupt these messages with my
footswitch and resume manual CW or SSB sending.  

It sure is nice to worry about making the contact, rather than worrying about
blowing up a preamp, and/or your amplifier!  GL and 73, Lance
> -----Original Message-----
> From: Lance Colllister [mailto:[email protected]]
> Sent: Wednesday, February 12, 2003 11:36 AM
> To: Joe Hutcheson
> Cc: [email protected]
> Subject: Re: [Moon-net] IC-746 Sequencer Question
> 
> Joe Hutcheson wrote:
> >
> > I'm in the process of setting up a 2M preamp with coax relays, sequencer,
> > etc.  One seemingly fool-proof approach that allows the sequencer to
> control
> > RF has been described by Ken, AH6LE
> > (http://reagan.ah6le.net/radiomods.html).  I may use this, assuming I can
> > figure out exactly where jumper W3 is (not as simple as it sounds,
> > particularly if you wear bifocals (sigh)).  Have any of you used other
> > approaches for an Icom IC-746?  I'm trying to come up with something that
> > controls more than PTT, so I can rely on it for semi-break-in CW and other
> > modes.
> >
> > Thanks.
> >
> > Joe, KB1CJ
> > [email protected]
> >
> > _______________________________________________
> > Moon-Net posting and subscription instructions are at
> http://www.nlsa.com/nets/moon-net-help.html
> 
> Although I also use an IC746 as my transmitter, I still prefer my Kenwood
> TS830-S as
> my EME receiver because of its superior noise blanker.  However, there is no
> question that properly connecting the relays and preamp are necessary if you
> want to
> keep it working.  This is independent of any rig you choose to use.  Further
> discussion of this is the first item on my "EME TIPES" web page:
> 
> http://www.bigskyspaces.com/w7gj/emetips.htm
> 
> After many years of EME operation, I finally broke down a few years ago and
> built a
> proper sequencer box.  I can't believe I waited so long!  Especially with
> the option
> of having a computer involved to automatically XMIT (either with CW beacons,
> SSB
> voice keyer or JT44), it is essential!  More information on the sequencer
> system
> used here is at:
> 
> http://www.bigskyspaces.com/w7gj/station.htm
> 
> GL and VY 73, Lance
> --
> Lance Collister, W7GJ (ex: WN3GPL, WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8)
> P.O. Box 73
> Frenchtown, MT  59834  USA
> QTH: DN27UB
> TEL/FAX: (406) 626-5728
> URL: http://www.bigskyspaces.com/w7gj

-- 
Lance Collister, W7GJ (ex: WN3GPL, WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8)
P.O. Box 73
Frenchtown, MT  59834  USA
QTH: DN27UB
TEL/FAX: (406) 626-5728
URL: http://www.bigskyspaces.com/w7gj