On 11/4/2015 7:49 PM, Jim Henderson wrote:
> On Wed, 04 Nov 2015 18:41:26 +0000, Orchid Win7 v1 wrote:
>
>>>> While we're on the subject, what causes the weird diagonal lines that
>>>> all RF-modulated signals have?
>>>
>>> Non-perfect electronics :-)
>>
>> Why lines though? Why not random snow or something?
>
> Because radio waves are waves, not "random noise".  The proximity of the
> transmission source means that the wave is stronger than the other random
> RFI in the area, so it stands out.
>
I think it is more likely to be that the RF is not properly tuned.
As you and Scott pointed out:

>
> The basic rule of thumb is to buy the least expensive component that meets
> the specifications

The tuning pots are generally only 10 turn pots and it will be hit and 
miss to get an exact match.



-- 

Regards
     Stephen

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