[Elecraft] [KX3] KXFL3 dual-Passband Roofing Filter

[Don Wilhelm]

Joshua,

The K3 filter selection and the KX3 filter selection are two different 
"animals".
Yes, both will help with AGC 'pumping' in the presence of strong signals 
close to your operating frequency, but there is much more to the K3 
filter selection than for the KX3.  The KX3 provides the KXFL3 option 
while the K3 has a variety of filter bandwidths that can be purchased.
Your operating situations will dictate which K3 filters might be needed, 
but with the KX3 it is only a question of 'do you need the filter or 
not' - there are 3 widths in the KX3 filter option.
The KX3 filter needs the calibration, the K3 filters do not need 
'calibration', but require menu setup.

In other words, the two (K3 and KX3) filters are not comparable.

73,
Don W3FPR

On 6/2/2014 10:02 PM, Joshua Gould wrote:
> As I plan on adding a K3 down the line, It might not be a bad idea to get
> it when I order instead of later...
>
> Now I just need the money to order it...
>
> Joshua Gould
> K8WXA
>
>
> On Mon, Jun 2, 2014 at 9:40 PM, Rick Tavan N6XI <rtavan at gmail.com> wrote:
>
>> The KXFL3 decision is pretty easy. If you plan to use the KX3 only with
>> simple antennas (random wires, loaded verticals, magnetic loops) and for
>> casual QSOs, you don't really need it. Unwanted signals will be weak enough
>> not to overload the DSP. If you plan to use the KX3, even sometimes, with
>> good antennas (big, high), especially in urban environments or
>> multi-transmitter sites like Field Day, or on crowded bands as in contests
>> or DX pileups, then you should have the filter to protect the DSP from very
>> strong, adjacent signals.
>>
>> Another way of looking at it is, if the extra cost is not a hardship, get
>> the filter. Some day you'll be glad you did.
>>
>> Either way, you're gonna love it!
>>
>> 73,
>>
>> /Rick
>>
>>
>> On Mon, Jun 2, 2014 at 10:11 AM, Bill Frantz <frantz at pwpconsult.com>
>> wrote:
>>
>>> My wonderful wife said, "Go ahead and order a KX3. Happy Birthday!", so
>>> now I am working on options. How valuable is the KXFL3 dual-Passband
>>> Roofing Filter? Should I order it now, or see if I need it and order it
>>> later?
>>>
>>> 73, Bill, AE6JV
>>>
>>> ------------------------------------------------------------
>>> ---------------
>>> Bill Frantz        |"Web security is like medicine - trying to do good
>> for
>>> 408-356-8506       |an evolved body of kludges" - Mark Miller
>>> www.pwpconsult.com |
>>>
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>>
>>
>> --
>> Rick Tavan N6XI
>> Truckee, CA
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