On 11/4/2015 9:32 PM, Jim Henderson wrote:
> 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.
>

 From the little I know only having worked, with Comms guys. You are 
right but then you could tell me anything. It is all magic to me.
They even told me that our phone calls were bounced off the sky and the 
sea. And I believed them.


-- 

Regards
     Stephen

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