[Elecraft] Setting shift for different filters?

[Sam Morgan]

hold SHIFT knob til you see <- NORM ->
if you turn the WIDTH knob to an odd number  2.5 2.7 2.9 3.1 etc

tap SHIFT or WIDTH knob so the LOW and HI leds comes on
if you turn the SHIFT or WIDTH knob
you will see  LO .05 .15 .25 etc

now again
hold SHIFT knob til you see <- NORM ->
this time turn knob WIDTH to any even number 2.4 2.6 2.8 etc

tap SHIFT or WIDTH knob so the LOW and HI leds comes on
if you turn the SHIFT or WIDTH knob
you will see  LO .10 .20 .30 etc


as for a way to keep a setting after you have found one you like

I use the I setting for a <- NORM ->  2.7   FC *1.50

I Hold the WIDTH knob to get to filter setting II
now this one I play with the LO and HI until I find a setting I like

now I can use I for normal wide easy listening on a clear band
and I change to II if I need a modifier  300 LO to 2.10 HI narrow setting

ymmv
GB & 73
K5OAI
Sam Morgan

On 2/29/2012 8:16 PM, David F. Reed wrote:
> Don,
>
> thanks for the reply.
>
>   1. when I try using the Lo-Cut, it seems to be confined to 100 Hz
>      increments, so, 150, 250, 350, but no 200, 300, or 100 available; is
>      there a way to set that differently?
>   2. I can accomplish the same thing either way if I understand what is
>      going on, but is there a way to preserve the setting?
>
> Thanks again.
>
> --Dave W5SV
>
>
> On 2/29/12 7:18 PM, Don Wilhelm wrote:
>> Dave,
>>
>> Yes, the default is 1500 Hz.  with a 2.8 kHz filter, that puts the low
>> end at 200 Hz and the high end at 2900 Hz.
>>
>> AND that is why you should be using the Hi-Cut, Lo-Cut on SSB instead
>> of Shift and Width.
>>
>> For good intelligibility, you need to have some content in the 300 Hz
>> range, so set the Lo-Cut to 200, 250, or 300 depending on your desires
>> and the QRM conditions.  Then change only the Hi-Cut to reduce the
>> filter width - the width will change, cutting the highs and the filter
>> center frequency will be automatically changed leaving the low
>> frequency end unchanged.
>>
>> You will find that you can use a filter as narrow as 1500 Hz and still
>> maintain SSB intelligibility (for a male voice, a female voice may
>> need a few more highs).  Using Width and Shift to accomplish the same
>> thing is possible, but requires a lot more "knob fiddling".
>>
>> 73,
>> Don W3FPR
>>
>> On 2/29/2012 6:38 PM, David F. Reed wrote:
>>> I note that as expected, the center frequency of the bandpass of any
>>> given filter on SSB seems to be 1.5 KHz, whether its the 6 KHz filter,
>>> the 2.7 KHz filter or the 2.1 KHz filter.
>>>
>>> This seems to work out to be passing from 150 Hz to 2.85 KHz, right?
>>> So the 2.1 KHz filter (without using the shift control) passes 450 Hz to
>>> 2.55 KHz, right?
>>>
>>> I note that if I shift the center of the filter down to 1.35 KHz, the
>>> voices are more intelligible...
>>>
>>> When I switch filters and get back to the 2.1 KHz filter, the shift is
>>> lost; is there a setting I can use to save that shift setting?
>>>
>>> Thanks&   73 de W5SV, Dave