My P3 shows a rounded version of what is on the K3 when they are synced. When my K3 says 7.100.000 the P3 shows 7.100.0 when I go to 7.100.050 it goes to 7.100.1 its a rounded version. So when my P3 and K3 are synced (by simply pressing center twice) I can read the frequency on the K3 and know that is the frequency that the P3 is on. I simply set the K3 to 10.000.000 and then do the ref cal on the P3.
~Brett (N7MG) On Wed, Aug 11, 2010 at 11:09 PM, The Smiths <notforc...@hotmail.com> wrote: > 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) >> > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
