[Elecraft] FM Demod Problem with K3 + K144XV

Tue Jun 29 01:50:17 EDT 2010

In my experience with the K144XV in my K3 I can say that I have never experienced the sort of issues that have been described here on the reflector.

In fact I find that the receiver is excellent on 2M FM. (I have no HF antennas in the air at all, 6M and 2M only!)
My K3 has spent over 90% of its short life on 2M so far and its pretty good when compared to other radios I have used.
I am making contacts with the 6 - 7Watts output on 2M that I did not think possible and the receiver has shown excellent sensitivity.
(I do have a 160Watt 2M amplifier to help things along if needed though)

My only complaint is that the squelch in FM mode needs to have a faster attack time but apart from that, all is good.

Jeff Cochrane 
VK4BOF
Innisfail QLD
Australia
Elecraft K3 #4257
  ----- Original Message ----- 
  From: pd0psb 
  To: elecraft at mailman.qth.net 
  Sent: Tuesday, June 29, 2010 3:27 PM
  Subject: Re: [Elecraft] FM Demod Problem with K3 + K144XV

  The K3 seems on the narrow side for NFM, which is good for weak signals and
  inherent to its max. DSP bandwidth.

  On loud (and wider) signals this *can* lead to clipping of high frequencies
  and the squelch reacting on this with a mute action. In Europe this is less
  of a problem since we switched to a 12,5kHz lower deviation raster long ago.

  A solution could be an adjustable squelch tail/hysterises or an additional
  level-based squelch for such occasions.

  73'
  Paul
  PD0PSB

  73'
  Paul
  PD0PSB

  -- 
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  Sent from the [K3] mailing list archive at Nabble.com.
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