[Hammarlund] BEST ANTENNA??

[James M. Walker]

Howdy Rich,
You need to see figure 9 and figure 2 in the HQ-129X manual.
Also check the schematic showing the power supply section.
Then things should be back to normal, sounds like it was
modified, and poorly at that, YMMV FWIW
Jim
WB2FCN
http://eshop1.chem.buffalo.edu 

  ----- Original Message ----- 
  From: Pat & Rich McKinney 
  To: hammarlund at mailman.qth.net 
  Sent: Sunday, January 04, 2009 7:52 AM
  Subject: [Hammarlund] BEST ANTENNA??


  DE WB4VFN Rich and I have been working on several boat anchors for friends.  I have on my bench now a sp400 and a 129x.  Looking for input on best antenna setup.  The book shows it wants a balanced input at 300 ohms.  For my station I use a ladder line fed doublet and that seems to be what these old rigs like best.  But most people like to use coax these days.  The 129x even has a pl259 for the antenna input.  In playing around I found that the rigs...especially the sp400 don't like one side of the antenna coil grounded.  Seems like the signal comes up a little but the noise comes up a big lot.  I tried using a tv balun coax to twin lead to match it but insertion loss was too much.  Just wondering if anyone else has found best way to match in antenna input to coax.  


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