[Elecraft] Suggestions for tweaks while building K2 and KSB2

[Don Brown]

Hi

It depends. If you have an older K2 before s/n 3000 then you may improve things with a new crystal set. There is also no advantage to having all 14 crystals matched. The 7 in the CW filter need to match and the 7 on the SSB board need to match but the CW and SSB do not need to match each other because the SSB and CW crystals are not used at the same time. Many of the crystal sets before s/n 3000 were fine and no improvement will be had by changing them all out. It was just some of the crystal sets were a little out in the early K2's and then the new set of crystals will improve the band pass ripple and overall gain of the radio. It is also more important to have the SSB crystals closer matched it you are setting up the SSB board for 2.5 KHz bandpass. So if you have an older SSB module and want to upgrade to the 2.5 KHz bandpass then you may want to change the crystals. The caps are easier to change when the crystals are removed first.

Don Brown


  ----- Original Message ----- 
  From: Tom Mc<mailto:redmen1969 at optonline.net> 
  To: benkb1ahr-elecraftlist at yahoo.com<mailto:benkb1ahr-elecraftlist at yahoo.com> ; elecraft at mailman.qth.net<mailto:elecraft at mailman.qth.net> 
  Sent: Saturday, October 02, 2004 12:44 PM
  Subject: Re: [Elecraft] Suggestions for tweaks while building K2 and KSB2


  Is this the time to consider the 14 matched xtals?

  I bought a set at the time I installed my SSB unit (which was  well after
  the basic K2 was built).  I still haven't traded out the original xtals for
  the new ones in the K2, but once I do they will match the SSB's xtals.

  Tom
  WB2QDG
  K2 #1103

  When a clock is hungry, does it goes back four seconds?