[HBR] Question about HBR BFO Waveform

[WA5VGO]

Most of the BFO’s I’ve looked at on a scope are not perfect sine waves. At the very least they are asymmetrical and at the worst they have spikes or have squared off edges. I spite of their less than perfect appearance, they all seemed to work fine. 

73,
Darrell

> On Feb 18, 2018, at 7:44 PM, Whitebear1122 <whitebear1122 at comcast.net> wrote:
> 
> I finished wiring the BFO today and powered it up.  Tunes up nicely at 100 KC, sounds fine on a receiver.  The output waveform is not what I expected though.  I was expecting a sine wave but instead get something different.  Is the Hartley BFO output supposed to be a clean sine wave?  I have a picture of the waveform that I can email  if you can help analyze it. 
> 
> In lieu of information I’m going to wire up the BFO circuit on a piece of perf board to see if I get the same results.  My HBR BFO is tightly crammed in the little cabinet so maybe I did something wrong.  The perf board version may yield something different.
> 
> I don’t think the reflector allows pictures but I will include the waveform here just in case.  
> 
> Thanks, 73, Scott WA9WFA