[Elecraft] K3 TVI on 40 meters only

[Bob McGraw K4TAX]

I agree.   This mostly falls under the Part 15 rules where it says in 
general; "they must accept interference but not cause interference, 
etc".  It boils down to a cost point.   In other words, they are using 
the cheapest box that can be purchased to meet their requirements.   
I've held their feet to the fire on the point to where they acknowledge 
they have no choice in hardware or technical expertise that can or will 
resolve the issue.

My other and older receiver worked fine with no issues until lightning 
took it out.  They replaced it with a new one which has issues.   In 
other words, "we would love to keep you as a customer but we can't fix 
your problem".    The old receiver had an external connector for the RF 
remote receiver.  I removed the antenna, terminated the input and 
switched the remote over to IR remote control.   The new receiver has a 
built in antenna for remote control and thus it has a plastic box.   
Even on IR remote the RF receiver is still active.   Projcet cost down  
........ grrrrrr!

73

Bob, K4TAX



On 8/26/2017 11:23 AM, Jim Brown wrote:
> This is an example of what I was talking about (quoted below) that I 
> can't think of any mechanism whereby ANY ham rig is the CAUSE of RFI, 
> and an example of several common mechanisms within those systems that 
> make them susceptible. Their equipment and systems SHOULD reject or 
> signals and fail to do so, thanks to failures in design, 
> manufacturing, and/or installation.
>
> In other words, it is ALWAYS their fault.
>
> 73, Jim K9YC
>
> On 8/26/2017 5:14 AM, brian wrote:
>> John,
>>
>> Very informative.  I intend to throw it in the face of the next AT&T 
>> salesman that comes knocking on my door.  We get one every couple 
>> months.
>>
>> It is especially true that they lie about now being pure fiber to the 
>> house.  I ask them how they installed fiber without having sent out a 
>> machine to route it.
>>
>> Not mentioned is the RFI that their modems can generate. Reading the 
>> article confirms that it is almost a given-- especially for those 
>> with overhead utilities.
>>
>> 73 de Brian/K3KO
>>
>>
>>
>> On 8/26/2017 10:21 AM, John Oppenheimer wrote:
>>> May find some information about the issue here:
>>> http://adslm.dohrenburg.net/uverse/
>>>
>>> It will depend on which VSDL frequency is being used by the modem. My
>>> modem seemed to pick the high end of 40 meters most of the time.
>>>
>>> John KN5L
>>>
>>> On 08/25/2017 09:16 PM, Jim Brown wrote:
>>>> I can't think of a mechanism whereby ANY ham rig could be the CAUSE of
>>>> interference to cable TV or DSL.
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