KXBC3 clock drift
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This may be a redux of what has already been stated but I am a nut
for stability in my radio and my timekeeping. What I have done is purchased a BG7TBL from faymo-trading.service for $150 from Hong Kong (fast shipping and the newest version of this GPSDO). He still apparently is selling them: http://tinyurl.com/gtpzkvx I have the KTCXO3-1 TXCO installed in the K3s & I installed the K3EXREF in the K3. It locks beautifully to the Satellite data and I then set REF CAL to sync with the GPSDO. I found two softwares to sync the computer with the satellites: NMEA time and BIG BEN. I chose NMEA as it has a smaller footprint but either are out of sight once you set it. Both use the info from the GPSDO and they sync to the computer and keep it accurate to an incredibly precise number. NMEA lives in the hidden icons folder and I have it set to start with the computer so it is syncing constantly and updating the computer clock every minute. With the computer dead on, you just use the K3 Utility at the bottom of the Configuration tab and sync your accurate computer time to the K3/K3s. Now my K3 is about as stable as possible and that is a beautiful thing. 73, Gary KA1J ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Jim Brown-10
And my factory-built K3S. Sometimes I feel like an unpaid beta tester:-) To
Elecraft's credit they almost always* fix it in due time. (I keep a spare radio on hand just in case) * still waiting for that VOX/AntiVOX gain setting by mode. As I write CY9C's RTTY signal is breaking up on the beginning of each transmission. I'm guessing a VOX issue. On 8/28/2016 11:35 AM, Jim Brown wrote: > ... N7WS has found issues with some products, including his K3, ... > 73, Jim K9YC > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Clay Autery
It'd draw power and make the radio bigger.
On 8/28/2016 9:58 AM, Clay Autery wrote: > So you think an onboard GPS is absurd, Don? ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Wes Stewart-2
Better to have a radio you can update, or that has updates instead of being
stuck with workarounds. All SDR systems are on the "fly" so to speak. I'd rather own an upgradable radio where there are programmers acutally working on updates. Bill K9YEQ -----Original Message----- From: Elecraft [mailto:[hidden email]] On Behalf Of Wes Stewart Sent: Sunday, August 28, 2016 7:29 PM To: [hidden email] Subject: Re: [Elecraft] KXBC3 clock drift And my factory-built K3S. Sometimes I feel like an unpaid beta tester:-) To Elecraft's credit they almost always* fix it in due time. (I keep a spare radio on hand just in case) * still waiting for that VOX/AntiVOX gain setting by mode. As I write CY9C's RTTY signal is breaking up on the beginning of each transmission. I'm guessing a VOX issue. On 8/28/2016 11:35 AM, Jim Brown wrote: > ... N7WS has found issues with some products, including his K3, ... > 73, Jim K9YC > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Grant Youngman-2
When you are logging to paper and have the radio clock displayed for the specific purpose of having a handy UTC clock it's annoying when it's off. The KXBC3 is marketed as a battery charger and RTC, and I bought it for both.
Erik W1QED Sent from my iPad On Aug 28, 2016, at 12:46 PM, GRANT YOUNGMAN <[hidden email] <mailto:[hidden email]>> wrote: > > Re: "...the clock seems to lose a couple of minutes per month.” > You know a radio must be pretty good when the complaints start drifting off to how accurate (or not) it is as a timepiece ;-) Grant NQ5T ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft <http://mailman.qth.net/mailman/listinfo/elecraft> Help: http://mailman.qth.net/mmfaq.htm <http://mailman.qth.net/mmfaq.htm> Post: mailto:[hidden email] <mailto:[hidden email]> This list hosted by: http://www.qsl.net <http://www.qsl.net/> Please help support this email list: http://www.qsl.net/donate.html <http://www.qsl.net/donate.html> Message delivered to [hidden email] <mailto:[hidden email]> ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In a recent message, "[hidden email]" <[hidden email]> writes
>When you are logging to paper and have the radio clock displayed for >the specific purpose of having a handy UTC clock it's annoying when >it's off. The KXBC3 is marketed as a battery charger and RTC, and I >bought it for both. As it turned out not to be as expected, Erik, would you like to sell it? 73 de David G4DMP -- + - - - - - - - - - - - - - - - - + | David M Pratt, Kippax, Leeds. | | Website: http://www.g4dmp.co.uk | + - - - - - - - - - - - - - - - - + ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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Ha ha, a little snarky comment-wise, but it's an annoyance, not a deal breaker... :-)
I was just wondering if it was a one-off issue, and/or if there was a possibility of correcting the issue in any way. I've been doing some experimenting with condo patio antennas (hamstick dipole up a painters pole, vertical 16' telescoping, long wire up a Jackite pole) with the internal batteries at 5W and I'm more than happy with the KX3 over all! I've made as far as Ukraine at 5W from MA/USA... :-P 73, Erk W1QED > On 29 Aug 2016, at 14:30, David Pratt <[hidden email]> wrote: > > In a recent message, "[hidden email]" <[hidden email]> writes >> When you are logging to paper and have the radio clock displayed for >> the specific purpose of having a handy UTC clock it's annoying when >> it's off. The KXBC3 is marketed as a battery charger and RTC, and I >> bought it for both. > > As it turned out not to be as expected, Erik, would you like to sell it? > > 73 de David G4DMP > > -- > + - - - - - - - - - - - - - - - - + > | David M Pratt, Kippax, Leeds. | > | Website: http://www.g4dmp.co.uk | > + - - - - - - - - - - - - - - - - + > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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Erik,
If you want to experiment with trimming the oscillator for the clock, you can try varying the capacitance of C7 and C8 on the KXBC3 option board. Nominal capacitor values are +/- 5%, so you may be able to find suitable capacitors that vary a bit from the nominal 15pF value that will set your RTC "right on". A few pF either side will likely make a significant difference. Again, a bit of experimentation will be in order to get it exactly correct. The actual capacitor value can vary from the nominal value by 0.75pF and still be in-spec, so only add/subtract a bit at a time. Monitoring the results over a long time period can be tedious work, but if you want it "spot on", it may be worth the effort for you. 73, Don W3FPR On 8/29/2016 6:05 PM, [hidden email] wrote: > I was just wondering if it was a one-off issue, and/or if there was a possibility of correcting the issue in any way. > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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