Utility of 1.8-KHz vs 2.1-KHz Filter for SSB?

[Jeffrey Maass]

For those using the 1.8-KHz roofing filter for SSB in crowded band conditions, how usable
is it? Does it require much "fine tuning" of controls when switching from a 2.8-KHz
filter, or can it be as simple as just selecting the filter?

I've used similar filters for the FT-1000MP, and had no problem making signals
intelligible when switching between wide and narrow SSB filters.

I like the idea of using a 1.8-KHz filter on CW as well, to supplement my current
selection of 250-400-1000 Hz.

I'm preparing to carry my K3 to the PJ2T contest station to give it a workout in the CQWW
160 CW Contest, and to try it out in the challenging pileup conditions we can generate
down there on SSB outside of the contest. I sill have time to order a couple of filters
before I depart!

73,  Jeff K8ND
 

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[ab2tc]

Hi,

I just use the HI-CUT knob to crank down the bandwidth until the QRM disappears and this will automatically select the 1.8kHz if appropriate. I don't hear a dramatic improvement once the 1.8 kicks in so I don't know if it was worth the money. I never use the XFIL button for anything. I prefer to think of the radio as having (almost) continuously variable passband tuning and let the radio choose the correct filter.

Jeff Maass wrote

For those using the 1.8-KHz roofing filter for SSB in crowded band conditions, how usable
is it? Does it require much "fine tuning" of controls when switching from a 2.8-KHz
filter, or can it be as simple as just selecting the filter?
<snip>

[Barry N1EU]

Jeff Maass wrote

For those using the 1.8-KHz roofing filter for SSB in crowded band conditions, how usable
is it? Does it require much "fine tuning" of controls when switching from a 2.8-KHz
filter, or can it be as simple as just selecting the filter?

I've used similar filters for the FT-1000MP, and had no problem making signals
intelligible when switching between wide and narrow SSB filters.

Jeff, the 1.8Khz roofing filter is very usable (preferred) in contest condx, but you will have to adjust the shift downwards for maximum intelligibility as you narrow the bandwidth.

In ssb contests, I usually just set width narrow, adjust shift and leave the K3 there for the entire contest.

73,
Barry N1EU

[Iain MacDonnell - N6ML-2]

Barry N1EU wrote:

>
>
> Jeff Maass wrote:
>> For those using the 1.8-KHz roofing filter for SSB in crowded band
>> conditions, how usable
>> is it? Does it require much "fine tuning" of controls when switching from
>> a 2.8-KHz
>> filter, or can it be as simple as just selecting the filter?
>>
>> I've used similar filters for the FT-1000MP, and had no problem making
>> signals
>> intelligible when switching between wide and narrow SSB filters.
>
> Jeff, the 1.8Khz roofing filter is very usable (preferred) in contest condx,
> but you will have to adjust the shift downwards for maximum intelligibility
> as you narrow the bandwidth.
>
> In ssb contests, I usually just set width narrow, adjust shift and leave the
> K3 there for the entire contest.

Yeah, that's what I do too. It'd be nice if the "NORM" setting in SSB
mode could handle that - or maybe if it could be customisable...

     ~Iain

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[Ignacy]

I find 1.8 of little use unless stations have signals with highs greatly boosted, like in contest signals. Unless  winning the contests is a priority, 2.1 is IMHO a much more comfortable choice.
Ignacy

[Arie Kleingeld PA3A-2]

I agree on this.
The 2.1 will give you better audio if you need it. It will, as a roofing
filter, perform just as well in a heavy ssb contest as a 1.8 .

73
Arie PA3A


-----Oorspronkelijk bericht-----
Van: [hidden email]
[mailto:[hidden email]] Namens Ignacy


I find 1.8 of little use unless stations have signals with highs greatly
boosted, like in contest signals. Unless  winning the contests is a
priority, 2.1 is IMHO a much more comfortable choice. Ignacy


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[AD4C]

That is why I ordered my K3 with the 2.1 roofing instead of the 1.8,just moving the shift to about 1.2 will be very selective but will sound better than using a 1.8Khz and after all will not make any difference.
2.1 for me its a better choise.

AD4C

Arie Kleingeld PA3A-2 wrote

I agree on this.
The 2.1 will give you better audio if you need it. It will, as a roofing
filter, perform just as well in a heavy ssb contest as a 1.8 .

73
Arie PA3A


-----Oorspronkelijk bericht-----
Van: [e-mail]
[mailto:[e-mail]] Namens Ignacy


I find 1.8 of little use unless stations have signals with highs greatly
boosted, like in contest signals. Unless  winning the contests is a
priority, 2.1 is IMHO a much more comfortable choice. Ignacy


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