[Elecraft] Crystal Filter Offset in 4.81, What does it mean?
Ralf Wilhelm
ralf at super-deutschland.net
Thu Feb 6 10:39:50 EST 2014
In my MarkV Field, I can switch the (2.4k?) SSB filter into the path while receiving in CW mode (500 Hz pitch) and don't "see" the other sideband at all due to the DSP which adds the sideband suppression almost for free (I can turn the DSP off and then I hear the other sideband). The same should apply to the K3, shouldn't it?!?
Greetings
Ralf, DL6OAP
Am 06.02.2014 um 16:14 schrieb Arie Kleingeld PA3A <pa3a at xs4all.nl>:
> Lyle,
>
> What are you saying here?
> The DSP filtering as a second IF would do (and I quote you) a /terrible/ job. :-)
>
> 73,
> Arie PA3A
>
>
> Lyle Johnson schreef op 5-2-2014 16:35:
> <snip>
>> The "center of the passband to the nominal pitch value" only occurs at higher pitches and/or narrower passbands.
>>
>> Think about the case where you have 1.5 kHz width selected and a pitch of 500 Hz. You defintely do NOT want the center of the filter and the pitch to be equal,or you'd have /_terrible _/opposite sideband suppression.
>>
>>
> <snip>
>> 73,
>>
>> Lyle KK7P
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
More information about the Elecraft
mailing list