[Johnson] Trouble Shooting Valiant Waveforms.

[kwylow zinjanthropus]

 Edward:
You sure that the scope you have monitoring the output of the Val is fully shielded? I may put more confidence in something (like a Heathkit SB-610 or Ham monitor scope) to check out the carrier. Sometimes noise can superimpose itself on an oscope signal, causing it to appear noisy or distorted.  Otherwise, you can fiddle with the drive control of the Val and check the RF out accordingly. If the signal tends to smooth out, then you may have some biasing problems with the Valiant. Some non-linear action may be occurring as a result of some bad components (bypass cap, something in the supply, who knows?).
In any event, let us know what comes out as a result of all this. 73 de Cal, n6KYR
 
  "Mullin, Edward J." <mulline@tycoelectronics.com> wrote: I have been looking at my Valiant with an oscilloscope in an effort to clean
up its audio, I have gotten the audio portion under control, I looked at the
RF output with the 'scope (radio in CW mode) and noted that the sine wave
was not so smooth having a couple of small "bumps and dips". What would be
considered a good trace for this transmitter? 

> Edward Mullin
> Tyco Electronics M/A Com 
> Government & Aerospace Products
> Environmental Lab
> 1011 Pawtucket Blvd.
> Lowell, MA 01853-3295
> (978)442-5452 Phone
> (978)442-5207 Fax
> 
> 
> 
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