M0BPQ Amateur radio
  • M0BPQ Home
  • Radio Blog
  • APRS
  • Equipment
  • Clubs
  • QSL
  • Photos
  • Contacts
  • G5YC
  • What's new?
  • For Sale

Pan adapter for Elecraft K2

4/20/2012

2 Comments

 
_ My Elecraft K2 hasn’t seen the use that it really warrants since I bought it several years ago. With field day approaching in June and the revised rules  allowing SDRs and skimmer I thought I would dust it off and try to finally get my software panadapter working.

The set up is fairly simple. A K2 with Z10000 buffer board is attached to a cross country wireless SDR which has been re crystalled for 4.9125MHz. I am using an E-MU 0202 USB soundcard with the SDR, but as my PC is quite limited, I plan to only use it to read 48KHz of spectrum. From a software point of view I would like to run N1MM as my contest logger as well as skimmer and possibly NAP3 as a panadapter. This clearly put some real pressure on COM port usage, as all of those bits of software need access to the K2’s COM port. Fortunately, N8LP has developed LP-Bridge (LPB2) that handles all of this and I am trying to integrate all of this kit together using the information on Larry’s website.

The problem I have now is that it only partially works.  Larry’s documentation suggests that one should use Kenwood mode in NAP3 to connect to LPB2 on com port 99. This is where my first problem arises; there is neither com port 99 nor a generic Kenwood setting in NAP3, even when NAP3 is opened first as Larry has suggested to others on the LP-Pan forum.

However, if I close LPB2 and choose Elecraft K2 in NAP3 with the appropriate com port (6 in my case) then I can connect to the radio and NAP3 tracks my VFOs no problem.  Similarly, in Skimmer, if I choose IF mode, then Elecraft K2 in the CAT tab, then skimmer connects to the radio and tracks the VFO. The problem here is that I still haven’t told skimmer what my IF out frequency is so I don’t know if that is the correct way to do things.

So a partial success? Clearly I need to get LPB2 working so that I can skim and contest log at the same time. The next issue is that I have a huge spike in the panadapter and skimmer waterfall. I thought the Z10000 should be taking this out? Or have I told NAP3 the wrong IF frequency?

2 Comments
John K1ESE
5/25/2013 11:08:22 pm

Steve -

I just got an LP-Pan for my K2 and am having trouble figuring out the IF Frequencies in NaP3. What Global and mode offsets do you use?

73 de K1ESE
John

Reply
Floyd Sense
11/14/2015 07:57:27 am

This is an old post, but I had a related question today that relates to this one. I find that the exact IF frequency offset required varies by band on the K2. For all bands, I use CWL = 140 and CWH = 960. For 80,40,30 and 17 meters, a global offset of 1170 works perfectly. For 20M, the offset needs to be 1200. For 15, 12M the offset needs to be -285 and for 10M is should be -330.

Reply



Leave a Reply.

    Author

    A few notes on recent radio activity by Steve, M0BPQ.

    Archives

    December 2020
    November 2012
    October 2012
    May 2012
    April 2012
    March 2012
    February 2012
    January 2011
    October 2010
    September 2010
    August 2010
    July 2010
    June 2010
    May 2010
    April 2010
    March 2010
    February 2010
    January 2010
    June 2009
    May 2009
    April 2009
    January 2009
    December 2008
    August 2008
    July 2008
    June 2008
    April 2008

    Categories

    All
    All
    Aprs
    Contests
    Hf Contests
    Projects
    Scout Radio
    Txbpf
    Vhf

    RSS Feed

Powered by Create your own unique website with customizable templates.