[Elecraft] Fwd: New Sherwood report

[Don Wilhelm]

  Paul and all,

Another way of investigating is with a spectrum analyzer - and for 
investigation of a transmitted signal on one band, it does not have to 
be expensive (but must be homebrewed to be inexpensive).  See the 
implementation by G4AON at http://www.astromag.co.uk/ssa/

It is quite a nice narrowband spectrum analyzer - you can see the 
display using Spectrogram or Spectrum Lab or most any other audio 
spectrum analyzer running on the shack's soundcard equipped PC.

You are correct, a 'scope is the most useful tool for measuring timing 
and amplitude.

73,
Don W3FPR

On 12/3/2010 10:55 AM, Paul Christensen wrote:
>> Why, yes IMO the K3 clicks too much.
> Jim,
>
> If you're experiencing clicks with your K3, you really need to investigate
> with a scope.  At the risk of pontificating, every station should have a
> scope to monitor the transmit waveform.  It can also be used to effectively
> monitor T/R sequencing times when using an external amp.  I suspect many
> stations are hot-switching their amps and don't even know it until a T/R
> relay's contacts fuse and the relay fails.  Cost is no longer an excuse.
> Anyone who can afford a K3 or FTdx5K can own a scope.  Good quality used
> scopes can be purchased on the surplus market between USD $100-200.
>
> If I may make a plug for N8LP, he's got a forthcoming product that addresses
> my pontification nicely:
>
> http://www.telepostinc.com/LP-500.html
>
> Cost will be more than a used oscilloscope, but it looks like his product is
> concentrated on what we need for monitoring rather than general bench work.
> Design and cosmetics appear to be commensurate with the Elecraft K3.
>
> Paul, W9AC
>