K3EXREF Ext. Frequency Reference Input
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K3EXREF Ext. Frequency Reference Input
 
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Hi:
Has anyone used or had experience using the K3EXREF with this item as the 10Mhz source: Trimble GPS Receiver GPSDO 10MHz 1PPS GPS Disciplined Clock with RS232 Port http://www.ebay.com/itm/Trimble-GPS-Receiver-GPSDO-10MHz-1PPS-GPS-Disciplined-Clock-with-rs232-port-/252162780444?hash=item3ab612ad1c:g:udkAAOSwhcJWQCPM It looks like it would be a nice 10Mhz source for the K3WXREF and the K3, but unfamiliar with this product. Welcome all comments good or bad. 73 De Mike VE3YF http://www.ve3yf.com [http://www.ve3yf.com/] ______________________________________________________________ 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] |
Re: K3EXREF Ext. Frequency Reference Input
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No experience with any of them here (yet). Looks like a Chinese knockoff with
the Trimble name on it. Might be perfectly okay but I wouldn't buy it for that reason. I've looked into buying, put haven't pulled the trigger yet*, one of these: http://www.leobodnar.com/shop/index.php?main_page=product_info&cPath=107&products_id=234 Also available from in the USA from http://www.force12inc.com/products/gps-locked-precision-frequency-reference-low-jitter-gps-clock-450-hz-to-800-mhz-output.html I've corresponded with Leo and been told that I could drive both my K3 (or anything else) at 10MHz while also driving my SDR-IQs at 66.66MHz. Wes N7WS *Since I now have a K3S with the high stability TCXO, I'm hesitant. On 12/19/2015 11:42 PM, Mike VE3YF wrote: > Hi: > > Has anyone used or had experience using the K3EXREF with this item as the 10Mhz source: > > Trimble GPS Receiver GPSDO 10MHz 1PPS GPS Disciplined Clock with RS232 Port > > http://www.ebay.com/itm/Trimble-GPS-Receiver-GPSDO-10MHz-1PPS-GPS-Disciplined-Clock-with-rs232-port-/252162780444?hash=item3ab612ad1c:g:udkAAOSwhcJWQCPM > > It looks like it would be a nice 10Mhz source for the K3WXREF and the K3, but unfamiliar with this product. Welcome all comments good or bad. > > > 73 De Mike > VE3YF > ______________________________________________________________ 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] |
Re: K3EXREF Ext. Frequency Reference Input
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In reply to this post by Mike VE3YF
No experience with that model but much information is available on line. I bought the BG7TBL version and a distribution amplifier. The Lady Heather software said it was accurate over several days to the 12th power...way beyond what I need. I use the output for my HP frequency counter and the K3. Way beyond what we need but fun to play with. If it doesn’t come with a antenna understand that the antenna has a powered LNA and will need power over the feed line, provided in the model I purchased. These eBay versions vary due to the fact that they use salvaged parts so depending when it is manufactured it will have a different OCXO for GPS RX installed. Since accuracy is way beyond what I need (I don’t run a calibration lab). Fun stuff...Homework assignments is the GPS frequency traceable to the NBS. :)
Pictures here: https://www.flickr.com/photos/ak5x/ 73, Bill-AK5X > On Dec 20, 2015, at 12:42 AM, Mike VE3YF <[hidden email]> wrote: > > Hi: > > Has anyone used or had experience using the K3EXREF with this item as the 10Mhz source: > > Trimble GPS Receiver GPSDO 10MHz 1PPS GPS Disciplined Clock with RS232 Port > > http://www.ebay.com/itm/Trimble-GPS-Receiver-GPSDO-10MHz-1PPS-GPS-Disciplined-Clock-with-rs232-port-/252162780444?hash=item3ab612ad1c:g:udkAAOSwhcJWQCPM > > It looks like it would be a nice 10Mhz source for the K3WXREF and the K3, but unfamiliar with this product. Welcome all comments good or bad. > > > 73 De Mike > VE3YF > > http://www.ve3yf.com > [http://www.ve3yf.com/] > ______________________________________________________________ > 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] |
Re: K3EXREF Ext. Frequency Reference Input
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In reply to this post by Mike VE3YF
If you prefer a US source of a GPSDO, you might look at this one. I have a friend who uses this one and prefers it over the Trimble based units.
http://www.force12inc.com/products/gps-locked-precision-frequency-reference-low-jitter-gps-clock-450-hz-to-800-mhz-output.html --- Chuck, AE4CW -----Original Message----- From: Mike VE3YF [mailto:[hidden email]] Sent: Sunday, December 20, 2015 01:43 To: [hidden email] Subject: [Elecraft] K3EXREF Ext. Frequency Reference Input Hi: Has anyone used or had experience using the K3EXREF with this item as the 10Mhz source: Trimble GPS Receiver GPSDO 10MHz 1PPS GPS Disciplined Clock with RS232 Port http://www.ebay.com/itm/Trimble-GPS-Receiver-GPSDO-10MHz-1PPS-GPS-Disciplined-Clock-with-rs232-port-/252162780444?hash=item3ab612ad1c:g:udkAAOSwhcJWQCPM It looks like it would be a nice 10Mhz source for the K3WXREF and the K3, but unfamiliar with this product. Welcome all comments good or bad. 73 De Mike VE3YF http://www.ve3yf.com [http://www.ve3yf.com/] ______________________________________________________________ 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]
---
Chuck, AE4CW |
Re: K3EXREF Ext. Frequency Reference Input
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In reply to this post by Wes (N7WS)
Hi Wes:
Actually for what it is worth, the board inside are Trimble Boards with a Trimble oven. I have also corresponded with Leo on his 2 GPSDO units. I like the fact that he says I will have no problem using the unit with both of my K3's. Tnx Wes 73 De Mike VE3YF http://www.ve3yf.com [http://www.ve3yf.com/] ______________________________________________________________ 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] |
Re: K3EXREF Ext. Frequency Reference Input
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In reply to this post by Mike VE3YF
Hi Chuck:
I tired sending you an email direct, but it bounced for some reason. Yes I am now aware of the product from Force-12, actually it comes from Leo Bodnar in the U.K. Very nice unit and probably the way to go. Tnx. 73 De Mike VE3YF http://www.ve3yf.com [http://www.ve3yf.com/] ______________________________________________________________ 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 Mike VE3YF
Speaking of using a GPSDO, I have a quick question...
I use a program called SBSpectrum, it shows frequency changes less than one Hz. I note that the K3, does frequency correction in small sawtooth steps of about 1/4 to 1 Hz, across a few seconds of time, repeatedly... It is as if some threshold is passed and the K3 then instantly jumps to a corrected frequency, and then the process repeats... I would like to avoid this, does using a GPSDO avoid this method keeping the frequency stable? -- Thanks and 73's, For equipment, and software setups and reviews see: www.nk7z.net For MixW support see; http://groups.yahoo.com/neo/groups/mixw/info For Dopplergram information see: http://groups.yahoo.com/neo/groups/dopplergram/info For MM-SSTV see: http://groups.yahoo.com/neo/groups/MM-SSTV/info On Tue, 2015-12-22 at 00:08 +0000, Mike VE3YF wrote: > GPSDO ______________________________________________________________ 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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