[Elecraft] K3 Auto antenna switching

[Cady, Fred]

I'm speaking DIGOUT1. 

________________________________

From: guyk2av at gmail.com [mailto:guyk2av at gmail.com] On Behalf Of Guy Olinger K2AV
Sent: Thursday, August 25, 2011 12:24 PM
To: Joe Subich, W4TV
Cc: Cady, Fred; elecraft at mailman.qth.net; DBellW6AQ at aol.com; K6YR at aol.com
Subject: Re: [Elecraft] K3 Auto antenna switching


You speaking of digout0 or digout1?


On Thu, Aug 25, 2011 at 2:10 PM, Joe Subich, W4TV <lists at subich.com> wrote:



	The only "official" use right now is for turning the PR-6 on/off on
	six meters.
	
	73,
	
	  ... Joe, W4TV 



	On 8/25/2011 2:02 PM, Guy Olinger K2AV wrote:
	

		Joe&  Fred,
		
		Hmm, I was somehow under the impression that was "needed for something", but
		reading it all again from scratch, that is the digout0 which apparently only
		works in relation to some transverter function.  Thanks all for the info.
		 73, Guy.
		
		On Thu, Aug 25, 2011 at 10:57 AM, Cady, Fred<fcady at ece.montana.edu>  wrote:
		
		

			Hi Guy and all,
			You could "kind of" do this with the DIGOUT1 signal from the ACC connector.
			It can be programmed OFF (floating, open-drain output, you need a pull up if
			you want a high) or ON (pulled down to ground).
			The Elecraft Owner's manual describes it on page 55 and here is what the
			KE7X K3 book says:
			(Figure 7 16.) This output signal is a general-purpose, open-drain output
			that may be programmed (OFF = floating, ON = pulled down to ground) on a
			per-band and a per-antenna basis (if the KAT3 ATU is installed). For
			example, you might use this feature to turn on the PR6 six meter preamp only
			when the six meter band and the six meter antenna are selected. To program
			DIGOUT1, tune the K3 Main receiver to the desired band with the selected
			antenna and go to CONFIG:DIGOUT1 and set it to ON. The maximum sinking
			current is 250 mA and the maximum load voltage is 25 VDC.
			
			So, "kind of" means you could program DIGOUT1 to be ON (pulled low) when
			you are on 80 and have ANT2 (for example) selected. For any other
			combination of band/ant DIGOUT1 would be floating (or pulled up). This would
			work if you are using an external band decoder to select antennas and you
			simply want to activate another switch or relay to switch in one of two 80
			meter antennas.
			
			Cheers and 73,
			Fred KE7X
			
			
			Fred Cady
			fcady at ieee dot org
			"The Elecraft K3: Design, Configuration, and Operation"
			www.ke7x.com
			
			

				-----Original Message-----
				From: elecraft-bounces at mailman.qth.net <mailto:elecraft-bounces at mailman.qth.net>  [mailto:elecraft-
				bounces at mailman.qth.net] On Behalf Of Guy Olinger K2AV
				Sent: Thursday, August 25, 2011 2:05 AM
				To: Oliver Dröse
				Cc: elecraft at mailman.qth.net; DBellW6AQ at aol.com; K6YR at aol.com
				Subject: Re: [Elecraft] K3 Auto antenna switching
				
				I would really like an external signal that tells whether ANT1 or ANT2
				is
				selected.  Any way to do that?  73, Guy
				
				On Wed, Aug 24, 2011 at 7:28 PM, Oliver Dröse<droese at necg.de>  wrote:
				
				

					Hi Dave,
					
					unfortunately not, it's just one BCD code per band.
					
					73, Olli - DH8BQA
					
					
					
					----- Original Message -----
					From:<DBellW6AQ at aol.com>
					To:<elecraft at mailman.qth.net>
					Cc:<K6YR at aol.com>
					Sent: Wednesday, August 24, 2011 8:29 PM
					Subject: [Elecraft] K3 Auto antenna switching
					
					
					

					I have two 80 meter  antennas.  Is it possible to program the band
					

				data
				

					output on the K3 for 80  meters # 1 and # 2?  I couldn't find an
					

				answer
				

					to
					

					this
					in the  manual.
					
					73,  Dave
					


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