Re: question for psk users

Posted by KD8NNU on May 02, 2012; 11:16pm
URL: http://elecraft.85.s1.nabble.com/Re-question-for-psk-users-tp7517322p7522941.html

I have macros built in HRD that allows me to quickly center a PSK RX and
then I pop to mhy 200 hz filter to work them when every the adjacent
signals are messing with my decode.  I constantly change between many
filter choices as necessary via macros in the software.

I bought the 200 hz filter last year at Dayton after Wayne spent a few
minutes of time with me explaining how to use the filters better to my
advangate.

Now I don't care what the other guys do because the K3 just does what it
does best.

~73
Don
KD8NNU


On Wed, May 2, 2012 at 7:45 AM, briana wrote:

> Guys,
>
> This rational is bogus.  The PSK users have to get used to decoding
> one signal at a time with narrow filters if that's what is necessary.
> To expect to have 2 or 3 KHz free of strong signals is crazy.
>
> Dealing with this reality puts the burden on the receiving end.  No
> way can you control what the rest of the wold does.  This isn't the
> Magic Kingdom.
>
> Given that PSK is a narrow bandwidth mode, why not use that to your
> advantage?
>
> Other modes deal with strong adjacent signals, why not PSK?
>
> You bought a K3 for its high dynamic range and high adjacent signal
> handling capability.  Why not use it for this purpose?
>
> Of course the argument ignores all the laws of physics and
> propagation.    I suggest you run some VOACAP prediction calculations
> with 25 watts and look at what you can't work with 25-75 watts.   You
> may not be interested in working the other side of the world, but
> others are.
>
> PSK isn't magic.
>
> 73 de Brian/K3KO
>
>
>
>
>
> On 5/1/2012 11:46 PM, Jon Perelstein wrote:
>> Eric KG6MZS asked why wouldn't you run more than 70w on PSK
>>
>> Because with the close spacing of signals in the various PSK
>> sub-bands, a
>> signal of more than about 50watts will completely annihilate all the
>> other
>> PSK signals and make that sub-band unusable for everyone else.  The
>> rule of
>> thumb for being polite on PSK is to operate 25-30w max.  I won't
>> claim that
>> there aren't some who are operating more (you Cuban stations know who
>> you
>> are), but many/most of us will avoid QSOs with people who are
>> obviously
>> running 50w+
>>
>> 73s
>> Jon, WB2RYV
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