[Elecraft] [Elecraft_K3] KR3 SW Receiver

[Matt Zilmer]

Thanks for a good answer, Ed.  No, I was not asking for someone to
design and market a 20 - 500 KHz transverter (for me).  I would rather
do it myself, but lack the time at present.

Will look at the link you posted.  

Thanks and 73,
matt W6NIA

On Fri, 18 Mar 2011 08:21:08 -0800, you wrote:

>The simple SBL-1 mixer can already do that.  I'm not sure how low in 
>freq. it would work, but 20-KHz seems reasonable.  Just tune the K3 
>at F to F-480 with an LO = F-500 KHz
>
>Using an LO = 3-MHz the 80m band could be translated (mixed) down to 
>0-500 KHz (with some limitations near the bottom end).
>The mixer would likely need a preamp ahead of it and probably a good 
>tunable preselector (tunable filtering).
>
>No firmware needed to do this.
>
>For full transceiver operation just add a second mixer for the 
>transmit path to the KVX-3.  The full G3XBM transverter will provide 
>5-8w output:
>http://sites.google.com/site/g3xbmqrp/Home/136k
>
>I think the part of the discussion is: "if someone started working on 
>a receive converter for 20 to 500 KHz".  You can do it yourself.  But 
>if this is saying: "I wish someone would make me something", then are 
>there enough buyers to make such an effort worthwhile?
>
>Lets say I can build this and sell it for $250.  I invest $5,000 to 
>make up 20 of them.  How long till I make back my investment?  This 
>is so simple why would anyone buy one from me?
>
>73, Ed - KL7UW
>
>------------------------------
>
>Message: 34
>Date: Thu, 17 Mar 2011 21:48:31 -0700
>From: Matt Zilmer <mzilmer at verizon.net>
>Subject: Re: [Elecraft] [Elecraft_K3] KR3 SW Receiver.
>To: Ken Alexander <k.alexander at rogers.com>
>Cc: elecraft at mailman.qth.net, Elecraft_K3 at yahoogroups.com
>Message-ID: <q3o5o6hj8cnup6j0v4gpqcqa1gorc9khef at 4ax.com>
>Content-Type: text/plain; charset=ISO-8859-1
>
>Maybe if someone started working on a receive converter for 20 to 500
>KHz, with TX ability on 470 to 500, the firmware would come for it?
>Could test it with any IF on which the K3 can receive.  The K3 can
>already be operated as a transverter IF at 1 mW for the 500 KHz range,
>albeit with a few restrictions.
>
>Too bad I don't have the time here. ....  But a lot of Elecraft
>projects get started because someone from outside the company thought
>them up.  If there is enough pent up demand, somebody will work on
>this.
>
>The K3 would make a !great! SWL receiver, but it isn't very well known
>outside the amateur community (my guess).
>
>73,
>matt W6NIA
>
>
>
>
>
>73, Ed - KL7UW, WD2XSH/45
>======================================
>BP40IQ   500 KHz - 10-GHz   www.kl7uw.com
>EME: 144-1.4kw, 432-100w, 1296-testing*, 3400-winter?
>DUBUS Magazine USA Rep dubususa at hotmail.com
>======================================
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