[Elecraft] P3 Broad Birdie & straw men...

[juergen]

Hi David

Thats what I am referring too, its the tuning by product effect. Now if there is weak signal on that spot, it makes it very difficult to copy or tune in a station. It is as if the signal "drops into a hole"   or that   the synthesizer skips or jumps that spot. Thats the best description I can give. Anyway you have to tune carefully. 

 On bands where there are a lot of birdies that have been removed, if you spin the VFO fast you can notice the "holes" 12 Meters is a case in point, there are several birdies there, and the band slice is small. You notice the  tuning weirdness more on a narrow band like 12 meters. You also have the pre-amp engaged and the noise floor is low, any quirks on receive become very obvious.

Holes or artifacts same difference!

Anyway its a quirk of the radio and thats it, I can live with it!

73
Juergen

--- On Mon, 6/13/11, David Gilbert <xdavid at cis-broadband.com> wrote:

> From: David Gilbert <xdavid at cis-broadband.com>
> Subject: Re: [Elecraft] P3 Broad Birdie & straw men...
> To: elecraft at mailman.qth.net
> Date: Monday, June 13, 2011, 2:29 PM
> 
> Juergen, how exactly does the SIG RMV feature in the K3
> "leave holes in 
> the band"??  I have zapped several dozen birdies that
> way and don't have 
> any holes at all.  Yes ... there is a sort of
> "whooshing" sounds as you 
> tune across some of them (the ones that required greater
> shift), but I 
> do a lot of contesting and have never experienced any
> signal drop out 
> ... and per my understanding of how SIG RMV works there
> should not be 
> any anyway.
> 
> Dave   AB7E
> 
> 
> On 6/13/2011 12:32 AM, juergen wrote:
> >   The birdie elimination routine is not
> all that effective and leaves holes in the band. I dont see
> how a more powerful DSP is going to help birdie 
> removal.
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