Re: [Elecraft] KX3 OSC Temp And Freq Drift Relationship?

2014-03-26 Thread Mark Petiford
RE:  The extended temp compensation is mostly about transmit frequency stability. It might make some difference in decoding PSK31 as the rig cools down, but I would expect that to be a smaller effect. To elaborate a bit more on wunder's comment, it is about frequency stability as related to tem

Re: [Elecraft] KX3 OSC Temp And Freq Drift Relationship?

2014-03-26 Thread Walter Underwood
The extended temp compensation is mostly about transmit frequency stability. It might make some difference in decoding PSK31 as the rig cools down, but I would expect that to be a smaller effect. wunder K6WRU On Mar 26, 2014, at 7:39 PM, Jack Chomley wrote: > Thanks everyone for the ideas

Re: [Elecraft] KX3 OSC Temp And Freq Drift Relationship?

2014-03-26 Thread Jack Chomley
Thanks everyone for the ideas.I have the XG50 for the job. Doing the Temp Comp routine hopefully will improve the reliability of decoding PSK31 directly with the KX3 and my HCT. Yes, will write down REFCAL, save config thanks Matt. 73, Jack VK4JRC Club.www.cqara.org.au Member WIA SARL

Re: [Elecraft] KX3 OSC Temp And Freq Drift Relationship?

2014-03-26 Thread Matt VK2RQ
Just back up your configuration with the KX3 utility before you start, and for extra security write down your current refcal value. If you do somehow "make a hash" of the compensation procedure, you can simply restore your saved configuration to get back where you started. Even if you somehow di

Re: [Elecraft] KX3 OSC Temp And Freq Drift Relationship?

2014-03-26 Thread Jim Bennett
Jack, My KX3 #5539 is used on and off for PSK31 and JT9 / JT65. I've made a bunch of JT65 and JT9 QSO's with it on 80, 20, and 10 meters, in addition to quite a few PSK31 contacts on several bands. That being said, I did do the temperature compensation procedure before I started doing data JT9

Re: [Elecraft] KX3 OSC Temp And Freq Drift Relationship?

2014-03-26 Thread Don Wilhelm
I can't answer your question without measuring your particular KX3, and about the only thing I can do is quote the specification of +/- 1 ppm over 0 to 50 degC. You can better that with the Temp Compensation. I don't think doing the Temperature Compensation will make a 'hash' of anything, b

[Elecraft] KX3 OSC Temp And Freq Drift Relationship?

2014-03-26 Thread Jack Chomley
Tonight I have been experimenting on PSK31 at 3 watts and 5 watts. In my shack the OSC Temp is about 38 deg and transmitting my CQ call about every 60 seconds @ 3 watts takes the OSC Temp to 39 deg, on RX it drops back to 38 deg. At 5 watts it goes up to 41 deg, but immediately settles back to 38