[Elecraft] 14.316 help!

[David Guernsey]

I realize it is the 4th harmonic.  I do not have any problems with any harmonics 
of 3579 KHz except the 14316 KHz (4th harmonic).  Thus, I wonder if the problem 
is really from the color burst crystal.

 73s de Dave KJ6CBS




________________________________
From: Grant Youngman <nq5t at tx.rr.com>
To: David Guernsey <mooo1941 at yahoo.com>
Cc: "elecraft at mailman.qth.net" <elecraft at mailman.qth.net>
Sent: Sun, April 24, 2011 1:39:51 PM
Subject: Re: [Elecraft] 14.316 help!

It's the 4th harmonic

Sent from my iPhone

On Apr 24, 2011, at 3:35 PM, David Guernsey <mooo1941 at yahoo.com> wrote:

> I don't have the problem on the 2nd or 3rd harmonic of 3579 KHz, but do on have 
>
> a tone between about 14.316 and 14.318 MHz.
> 
> 73s de Dave KJ6CBS
> 
> 
> 
> 
> ________________________________
> From: Jim Wiley <jwiley at alaska.net>
> To: Grant Youngman <nq5t at tx.rr.com>
> Cc: elecraft at mailman.qth.net
> Sent: Sun, April 24, 2011 1:11:44 PM
> Subject: Re: [Elecraft] 14.316 help!
> 
> 
> 
> Grant et al -
> 
> 
> This is no mystery - it just seems like one. 14.316  (or 14.317)  Mhz is 
> the 4th harmonic of 3.579 MHz, the common color burst frequency.  Color 
> burst crystals are used in an incredible variety of consumer  devices.  
> These days, the oscillators are usually configured as a digital gate 
> oscillator (read - square wave) that is very rich in harmonics.  If you 
> take the time to look, you will find signals at all the harmonics.  We 
> notice it mostly on 80, 40, and 20 meters because that is where we have 
> efficient antennas and receivers optimized for reception on those same 
> frequencies. 
> 
> 
> Is this a  problem?  You bet it is.   Are these devices in violation of 
> the part 15 rule that says that such devices may not cause interference 
> to licensed services?  Yes, they are.  However, there is a fly in the 
> ointment.   The FCC's rules for interference mitigation say that  
> (paraphrasing here) "It's not interference until someone complains!"  
> Unfortunately, the burden is on you  (the ham) to identify which device 
> is causing the problem, and then notify the device owner that his gadget 
> (TV set, computer, stereo set, alarm clock,  microwave oven,  kids toy,  
> calculator, FAX machine, treadmill, coffee maker, video game, . . . . . 
> ) is causing interference.   They you get to educate the consumer, an 
> always interesting endeavor.   So, unless you have complained to the FCC 
> and the manufacturers and the  stores that sell the devices and the end 
> users,  it's not interference!   Ain't that great?!
> 
> 
> The process of informing the miscreants will keep you entertained for 
> some time.    Thank you local congress critter for failing to enact more 
> rigorous standards concerning interference from consumer devices.  They 
> are the ones who responded to the lobbyists from the electronics 
> industry that promised this would never be a problem, and voted to water 
> down the rules accordingly.  
> 
> 
> Have a nice day.
> 
> 
> - Jim, KL7CC
> 
> 
> 
> 
> Grant Youngman wrote:
>> I've had a weak 'carrier' in this spot for years. Used to have to endure it for 
>>
>> the Icom Net at 14.317 in the old days. No clue what it is. 
>> 
>> 
>> Grant/NQ5T
>> 
>> Sent from my iPhone
>> 
>> On Apr 24, 2011, at 2:29 PM, Fred Jensen <k6dgw at foothill.net> wrote:
>> 
>> 
>>> Mine is at 14317.00 and is moderately weak.  I 
>>> 
>> _
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