[Elecraft] XFIL on K3

[Don Wilhelm]

My apologies for my note yesterday on this subject, it was incorrect.

I have just been informed by one of the Elecraft engineers that I erred 
in my statement that the K3 filters could be in any order, so Bill was 
right.
See Dick's comments to me below.  I did not see that note in my early K3 
manual which does state that the filters can be installed in any order - 
I did not read the remainder of the note.

Also note that if you have the 13kHz  filter, it must be in the FL1 slot.

73,
Don W3FPR

On 11/24/2019 8:49 AM, Dick Dievendorff wrote:
> Don, FYI:
>
> K3/K3S crystal filters should always be installed in descending width order. See K3S owner's manual, "rule #2" near the bottom of page 85. The second example shows FL1 empty. There is a similar discussion near the top of page 7 of the K3 "Installing Crystal IF Filters" document and the bottom of page 77 of the K3 owner's manual.
>
> The FM transmit filter is hard-coded as FL1. So if you need FM transmit, a 13 kHz FM filter has to be in FL1.
>
> 73 de Dick, K6KR
>
>