Doug Faunt N6TQS +1-510-655-8604 wrote: > Since we're on the subject of the sub RX, what would it take to get IF > out from the sub RX in addition to from the main RX?
W3SZ posted about that in the LP-Pan group: http://groups.yahoo.com/group/LP-PAN/message/2332 (don't know if you have to be a member of the group to read that) Basically: >> >> This is a brief summary of what I did with the KRX3: >> >> >> >> I used the Z10000 as buffer amp inside the KRX3. >> >> >> >> I got +12V from a 12SA pad near to P86A. >> >> Power and RF connections to the Z10000 were done from the underside of >> >> the Z10000. >> >> >> >> I took IF output from KRX3 from P86A and used RG174U to take this to >> >> input of Z10000. >> >> >> >> I mounted Z10000 on an unused FL position using a 1/2 inch standoff. >> >> >> >> I mounted a dual female SMA connector in the REF hole at the bottom >> >> corner of the K3 just below the official IF out BNC. I then used a >> >> right angle premade small surplus coaxial cable to take the signal to >> >> the KRX3 and thus the Z10000. >> >> >> >> I entered the KRX3 at the back left corner opposite to J92, because >> >> there was already an opening there. >> >> >> >> I ran the coax inside the KRX3 bottom shell, beneath the main KRX3 >> >> PCB. I brought it up to the Z10000 by running it through an unused >> >> hole meant for an FL standoff. >> >> >> >> At first check, using the two subreceivers on the Flex5000 to receive >> >> the IF signals from the K3, the main K3 and the KRX3 subreceiver IF >> >> outputs seem to be equivalent. >> >> >> >> When constructing the Z10000, I used the -U [Universal] options, not >> >> the K2 options. I chose to set it up for zero gain, and thus chose >> >> R907 to be 499 ohms, and R905 to be 4.7K, as per section 2.3.3 of the >> >> Z10000 manual. HTH, ~Iain / N6ML _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
