On Wed, 04 Nov 2015 20:20:20 +0000, Stephen wrote:

> 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.

Could be - generally a harmonic frequency can cause weirdness as well - I 
was more talking about why it's lines and not just snow.  The proximity 
of the transmitter to the "receiver" is what causes that.

Jim



-- 
"I learned long ago, never to wrestle with a pig. You get dirty, and 
besides, the pig likes it." - George Bernard Shaw

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