[Elecraft] RX I/Q output planned or thought about for the K3/P3?

Edward R. Cole kl7uw at acsalaska.net
Wed May 9 03:32:55 EDT 2012


Geoff,

This topic was kicked around about two years ago and basically 
Elecraft said it they had no plans to provide access to the IQ ckts 
in the K3.  I'm not sure if there may be future plans to add this for 
the P3?  Since there is no hardware path then no firmware upgrade can 
switch it to a connector.  I would have loved direct digital access 
to the IQ ckts instead of buying two LP-Pan, which duplicate the IQ 
mixers in the K3 but provide base-band audio output for connection 
thru a soundcard.

I modified my K3 sub-receiver to breakout the 1st IF so I could 
connect a LP-Pan to it, as well.  From the two LP-Pan I connect a 
four-port soundcard (M-audio Delta-44) for running dual-receive 
diversity reception on Linrad SDR sw.  If I only want to use one 
receiver, I bought the emu0202 soundcard, since it can do 192-KHz bandwidth.

I bought the LP-Pan used for about half-price and also the 
emu0202.  I found the Delta-44 cheap on Amazon.com.
I document all this here:
http://www.kl7uw.com/LINRAD.htm

Its an unfinished project at this time.

73, Ed - KL7UW


-------------------------------
Date: Wed, 9 May 2012 00:03:01 -0400
From: Geoff Wolf AB3LS <liltechdude13 at gmail.com>
Subject: Re: [Elecraft] RX I/Q output planned or thought about for the
         K3/P3?
To: Elecraft at mailman.qth.net
Message-ID:
         <CACNP6jqsHu05CY0qSLeFr_qT05ChRO-AL079rmjLRE6Z4izztw at mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

Tony,

Yes I am aware of Softrock and LP-Pan, as well as a whole slew of other
SDRs you could use with the K3's Buffered IF Output.

I suppose the thing I'm trying to get at is a direct I/Q line from the
K3... Whether a software update is possible to add this to the current
Stereo Line-Out jack (on the back of the K3) or not.

73
DE AB3LS




73, Ed - KL7UW, WD2XSH/45
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