Why manual setting for FLTX?

[Bill VanAlstyne W5WVO]

I moved/added some roofing filters yesterday, adding both a 6 kHz AM filter and the 400 Hz CW filter, moving my 2.7 kHz filter from the FL1 to the FL2 position, and my 1.8 kHz filter from the FL2 to the FL3 position. I thought I understand everything I needed to do to fix all the configuration settings, but I forgot one thing: changing the FLTX setting for the CW mode. I thought I only had to do that for SSB and AM.

Turns out I was wrong, and FLTX CW was still set to FL1. The K3 manual led me right to the problem based on the error code I was getting, and it was easily fixed. Again, excellent documentation.

But this got me to thinking: Why is this a manually configurable option at all, when the settings are all manadatory? You MUST have SB and CW set to the 2.7/2.8 kHz filter position, you MUST have AM set to the 6.0 kHz filter position, and you MUST have FM set to the 12.0 kHz filter position. So what's to "choose"? Seems like this should be automatic and hidden from the user.

Am I missing something here? Is there really a reason for it working this way?

Bill W5WVO
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[Bill VanAlstyne W5WVO]

D'OH!!

Right, they're mapped only by SLOT... And the K3 has no way of automatically identifying which filter is which, other than what the user tells it. OK, I get it. Thanks. (Duh. Embarrassed.)

Bill W5WVO



From: Greg
Sent: Sunday, April 18, 2010 9:34 AM
To: Bill VanAlstyne W5WVO
Subject: Re: [Elecraft] Why manual setting for FLTX?


Hi Bill.  The answer is because not everyone will have those filters in the same slot.

73
Greg
AB7R


On 4/18/2010 7:38 AM, Bill VanAlstyne W5WVO wrote:
I moved/added some roofing filters yesterday, adding both a 6 kHz AM filter and the 400 Hz CW filter, moving my 2.7 kHz filter from the FL1 to the FL2 position, and my 1.8 kHz filter from the FL2 to the FL3 position. I thought I understand everything I needed to do to fix all the configuration settings, but I forgot one thing: changing the FLTX setting for the CW mode. I thought I only had to do that for SSB and AM.

Turns out I was wrong, and FLTX CW was still set to FL1. The K3 manual led me right to the problem based on the error code I was getting, and it was easily fixed. Again, excellent documentation.

But this got me to thinking: Why is this a manually configurable option at all, when the settings are all manadatory? You MUST have SB and CW set to the 2.7/2.8 kHz filter position, you MUST have AM set to the 6.0 kHz filter position, and you MUST have FM set to the 12.0 kHz filter position. So what's to "choose"? Seems like this should be automatic and hidden from the user.

Am I missing something here? Is there really a reason for it working this way?

Bill W5WVO
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