You're wrong Brett... No matter what you say the P3 doesn't automatically sync
with the K3 to a 1Hz accuracy. The Center line on the P3 CAN be and usually is
off by as much as 99Hz. No matter how you look at it, if you can move a Center
position on the P3 with the select knob in the "CENTER" adjustment mode, and
it doesn't change from the reading of 10.000.0 until you get up to 10.000.1 or
down to 9.999.9 than logic tells you that SOMETHING is changing between those
two positions which just happen to be 100Hz apart from each other.
Conversely, if you can change the K3 from 10.000.099 down to 9.999.999 before
the display on the P3 center line changes, than obviously the K3 and the P3 are
not in sync to the Hz.
Look, try this.. it's a very simple test. Take your rig, put it on 10.000.000
Now look at your P3, does it say 10.000.0. Let's say that it does (according to
you it should), now, turn your VFO knob up until the P3 reads 10.000.1. Where
is your K3 displaying? I'm sure it's not going to be 10.000.100. I know mine
sure isn't, and that's after I set that center as close as possible. My rig
displays 10.000.042. That's 58Hz off.
Take your VFO move it down until the P3 says 9.999.9. What does your K3
display? Mine says 9.999.940, 60Hz Off. it's NOT accurate. We need the extra 2
digits in order to set the true Center of the P3 BEFORE doing a Ref-Cal.
You just can't set the Ref-cal until you know the center has been set
correctly. If you do, than you're going to have EVERYTHING out of wack by that
much difference. Moving that Ref cal just confuses things more.
I'm not over thinking it, on the contrary you're putting your head in the sand
and pretending that the P3's center is following the K3 with 000Hz accuracy.
When you center that marker and hit the QSY button you are going to move the
CENTER of that carrier on the display as far or as close to the center that you
just calibrated it to.
You're just wrong.. I'm sorry. I don't know why Alan hasn't just come on here
and said so... I've already seen 3 posts from him since we've been discussing
this.
The only people that this isn't important to are SSB guys that don't mind
coming within 100Hz of the QSY freq. I don't know if you do CW, but I do, and
when I land 80 hz away from someone with my 100 Hz filter on it makes a
difference. The P3 was designed with SSB guys in mind, NOT cw guys. The
accuracy of the center display, and the tremendous warm up drift all indicate
it.
I love my P3, and I'm having fun with it, but if Alan wants to make this
friendly to the CW guys that requires more accuracy than the SSB guys use.
He's going to have to 1 - re-write the manual on how to set up the Center, then
the Ref-cal alignments, and then 2 - add the extra 2 digits to the center
display freq.
This is NO different that putting your K3 on 10.000.000 and setting up the Zero
beat on your Config: Ref Cal. You just wouldn't do it that way if you didn't
know that your K3 wasn't parked at exactly 10.000.000.
You can disagree all you like. I've made my point, shown my facts, and I'm not
going to argue any further on the reflector. Feel free to contact me off the
reflector if you need me to explain further. That goes for Alan as well, I
would love to talk with you and explain what's going on here if my explanation
doesn't make sense to you.
> From: br...@livecomputers.com
> Date: Wed, 11 Aug 2010 21:53:07 -0700
> Subject: Re: [Elecraft] P3: a modest proposal for QSY
> To: notforc...@hotmail.com
>
> The P3 is centered on the K3 by default. Thus you can read the K3 to
> tell what frequency the P3 is on. It doesn't need the extra precision
> on the P3 display. I didn't read any more than your last post. I
> think you're over analyzing it and making it more complicated than it
> needs to be. Its not that hard to understand whats going on there I
> think most hams would get it. Those who don't get it its probably not
> important to.
>
> ~Brett (N7MG)
>
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