[Elecraft] Sub-Rx Filters

[Jerry Moore]

Yes, do tell,  I want one in the future. 

On August 8, 2015 1:46:46 PM EDT, Lane <software.research.development at gmail.com> wrote:
>Joe - How did you get the 200Hz filters for the K3S? I didn't see those
>as
>options anymore, but wished they were.
>
>On Sat, Aug 8, 2015 at 7:51 AM, Joe Subich, W4TV <lists at subich.com>
>wrote:
>
>>
>> When I assembled my K3, I ordered the filters as FM, 2.7, 1.8, 400,
>>> and had the last slot open. For the K3S, I have (1) FM, (2) 2.8, and
>>> (2) 400’s. So I have the following questions.
>>>
>> >
>> > How will the filters be installed as a factory build?
>>
>> My guess is that the filters would be installed in the first two or
>> three slots as they were in my original factory built K3.
>>
>> > If I have a say so, would it make sense to install it as such
>> > (O = open)
>> > Slot      1     2      3       4       5
>> > Main     FM    2.8     O      400      O
>> > Sub       O    2.8     O      400      O
>>
>> That is the way mine are done - the Sub RX has a second FM filter
>> (I wanted the ability to use wide audio for SWLing with an Aux
>> antenna) and the main TX has a 1500 Hz filter in slot 3 which I
>> do not use and the 200 Hz filter in slot 5.
>>
>> If I were to do it again, there would be no changes except to replace
>> the 1500 Hz filter with a 1800 or possibly a 2100 (that is my typical
>> SSB bandwidth).  The FM filter it just fine for AM - both TX and RX.
>>
>> 73,
>>
>>   ... Joe, W4TV
>>
>>
>>
>> On 8/8/2015 12:59 AM, Lane wrote:
>>
>>> Hi,
>>>
>>> I have a K3 w/o a sub-receiver and continue to enjoy learning about
>the
>>> hobby, and because of that, I’d like to start learning about all the
>>> things
>>> I can do w/ a sub-receiver. So I’ve ordered the new K3S-F. Seeing as
>I
>>> have
>>> several weeks to rethink my order before it ships, I’d like to
>better
>>> understand the sub and filters. I also hear the sub is a pain to
>remove
>>> and
>>> wanted to get my filters right initially if possible.
>>>
>>> When I assembled my K3, I ordered the filters as FM, 2.7, 1.8, 400,
>and
>>> had
>>> the last slot open. For the K3S, I have (1) FM, (2) 2.8, and (2)
>400’s. So
>>> I have the following questions.
>>>
>>> How will the filters be installed as a factory build?
>>>
>>> If I have a say so, would it make sense to install it as such (O =
>open)
>>> Slot      1       2       3       4       5
>>> Main    FM   2.8     O      400    O
>>> Sub       O    2.8     O      400    O
>>>
>>> By doing that, I leave the last slot open for 200Hz filters if they
>come
>>> back, and slot 3 for something between 2.1 and above 400 if I can
>find a
>>> good reason to fill them.
>>>
>>> My understanding of diversity reception is that I can receive two
>>> different
>>> frequencies and though used more for CW when working pile-ups, it’s
>not
>>> something I’d likely use for FM, hence the single FM roofing filter.
>So I
>>> was wondering about installing AM on the sub just so that I could
>have
>>> that
>>> as well.
>>>
>>> I'd be interested in knowing how you guys did it.
>>>
>>> Thanks,
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