[Elecraft] K3 PSK31 with Digipan

[Bob Cunnings]

Yes, many of us know all this, but it's still nice, under benign
conditions, to operate using a wider waterfall for both transmit and
receive. I often operated PSK on my Orion using the 6kHz filter, it's
fun to see pretty much all the PSK activity on the band at once -
context, right? When I've opened up the BW like this I always disable
AGC anyway. When the going gets tough, I narrow the BW.

Since I paid for the 6kHz filter, I'd like to use it on DATA A if I
choose, since there is no technical limitation in the K3 preventing it
AFAIK.

Bob NW8L

On Fri, Sep 19, 2008 at 1:35 PM, Don Wilhelm <w3fpr at embarqmail.com> wrote:
> Dave,
>
> OTOH, best results with AFSK is to use a narrow receive filter.  It keeps
> strong undesired signals out of the passband.
> Strong undesired signals in the passband cause a reduction of receiver gain
> because the AGC reacts to them.
> Sure, the computer can handle and display them, but if the receiver gain is
> reduced because of a strong signal that just came on, your chances of
> maintaining solid print is reduced.
>
> Do as you choose, but I prefer to tune my data mode signals just like any
> other - with the VFO knob, and use a narrow filter to get rid of the 'other
> trash' on the band.
>
> 73,
> Don W3FPR
>
>
> Dave Quick - KØEKL wrote:
>>
>> I'd like to be able to transmit in Data-A mode through my 6 Khz AM filter.
>> Being able to see ~6 Khz of spectrum in the waterfall window would be
>> great.
>>
>> -Dave Quick KØEKL
>>
>>
>>
>>
>> -----Original Message-----
>> From: elecraft-bounces at mailman.qth.net
>> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Joe Subich, W4TV
>> Sent: Friday, September 19, 2008 11:55 AM
>> To: 'zibs'; elecraft at mailman.qth.net
>> Subject: RE: [Elecraft] K3 PSK31 with Digipan
>>
>>
>>
>>>
>>> But in Data A mode, one can expand the receive width out to
>>> 4 kHz using the 2.7 kHz filter. If you attempt to transmit below 200 or
>>> above 2800 Hz, power output will drop to zero.
>>>
>>
>> Perhaps all of the data modes should be limited to 2.8 KHz of DSP
>> bandwidth
>> (or even 2 KHz).  That's more than enough for any reasonable amateur data
>> mode and will keep users from shooting themselves in the foot.
>>
>>
>>
>
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