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 <[email protected]> wrote: > 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 ARRL > GQRP #14392 > QRPARCI #15068 > VKQRP. #833 > >> On 27 Mar 2014, at 6:51 am, Matt VK2RQ <[email protected]> wrote: >> >> 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 >> didn't save your configuration, it is very simple to simply revert the >> compensation menu setting from "CUSTOM" back to "STANDARD", and zero-beat >> your radio to the WWV carrier to reset your refcal. >> >> Of course, you should only do what you are comfortable with, but in my view >> (I finally got around to doing the procedure last weekend) it is a >> reasonably straightforward and nicely automated procedure that yields a big >> benefit for digital mode operation. The Elecraft team has done well with >> this one. >> >> 73, >> Matt VK2RQ >> >>> On 26 Mar 2014, at 11:59 pm, Jack Chomley <[email protected]> wrote: >>> >>> 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 deg. >>> My question is, what would the estimated frequency change be, per degree of >>> OSC Temp change? I am trying to work out the total freq shift between the >>> start and the end of my PSK31 transmission. >>> Now, I have not done the OSC temp compensation routine to my radio. Trying >>> not to go down this road in case I make a hash of it :-) >>> In closing, I will not be using WSPR or JT65 etc with this radio. >>> >>> >>> 73, >>> >>> Jack VK4JRC >>> >>> Club. www.cqara.org.au >>> Member WIA SARL ARRL >>> GQRP #14392 >>> QRPARCI #15068 >>> VKQRP. #833 >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:[email protected] >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to [email protected] > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] -- Walter Underwood [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
