very nice video, love it. i use these 10Mhz clocks, just great. now if we can get all the ssb rigs to use this, ssb may start sounding good. glad i found this channel. good to see real radio folks on youtube.
YIG = Yttrium Iron Garnet. The scope method works well. I used to dial in freq standards in about 15 minutes using an old VLF comparator (WWVB) but then it would take about a full day to cert them. Used a Tek 7904 triggered on our standard and test unit to verticle channel. Then I moved to a place where we had our own 5061 Cessium beam as well as an HP Rubidium.
when i was looking to get accurate 10mhz I got the same box. I think I paid around the same. I've never compared it to a known better standard but I feel pretty confident that it's good. I do want to get a distribution like you have. right now just plug in whatever I need
Back in May 2016 I had heard that a Math programing issue was to blame for the freq. error and that a fix was coming but I don't know if that fix was released. Like you say it's not a big enough error to worry about but if it could easily be corrected...well... perfect is good.
HI Jim, Heard that as well. I never pursued it as 0.0002 Hz is pretty much in the noise for any practical use. Far better than the stability of any piece of gear I work on. I am keeping my eyes open for a deal on a GPS rubidium. 73 Vern N1CKX
NO, No, no; then I will miss out on the GREAT deal ! ! ! But if you lock a clock into the Rubidium Standard and loose GPS lock... The clock should still be correct to less than a second after one year. Good hunting ! tjl
Thank you for a great video ! By having more than one 10 MHz standard (3 to 5 would be a good starting point) you could tell when one is off. The big national labs around the world go to Paris, France to vote on the official time. Waiting on a display board to mount on my ThunderBolt GPSDO. Also like the OCXO because it will drift less with age... The Rubidium has an operating life of about twenty years, give or take a few years... And have a couple WWVB clocks and the Computer clock links to NIST in Colorado. tjl
Hi, thanks for the link and for watching. There is a good breakdown of the testing on the Time Nuts site. www.leapsecond.com/time-nuts.htm I can live with an error of 2 Hz at 10 GHz.
![Every Maker should have...[Pt.37]...a Rubidium Frequency Standard](http://i.ytimg.com/vi/zW5ffFuEQsw/mqdefault.jpg)
If you use X-Y mode on the scope you can see the freq. drift easier than using sine waves.
very nice video, love it. i use these 10Mhz clocks, just great. now if we can get all the ssb rigs to use this, ssb may start sounding good. glad i found this channel. good to see real radio folks on youtube.
YIG = Yttrium Iron Garnet. The scope method works well. I used to dial in freq standards in about 15 minutes using an old VLF comparator (WWVB) but then it would take about a full day to cert them. Used a Tek 7904 triggered on our standard and test unit to verticle channel. Then I moved to a place where we had our own 5061 Cessium beam as well as an HP Rubidium.
Thanks, was thinking of getting a BG7TBL. Just to get accurate tuning for ham radio.
Been wanting to buy one of those. Mark has one to and that's what sold me on it. Think I'll just bite the bullet and pick one up this week.
This one has been chugging along for almost three years now without a glitch. Was money well spent.
Great video and amazing voice!!
Hi Fried, Thank you and Thank you.......
Hello, form year still working good? stable in freq? You consider to buy it again if need for another radio? 73 de IZ3QVB
when i was looking to get accurate 10mhz I got the same box. I think I paid around the same. I've never compared it to a known better standard but I feel pretty confident that it's good. I do want to get a distribution like you have. right now just plug in whatever I need
They are nice to have.
Back in May 2016 I had heard that a Math programing issue was to blame for the freq. error and that a fix was coming but I don't know if that fix was released. Like you say it's not a big enough error to worry about but if it could easily be corrected...well... perfect is good.
HI Jim, Heard that as well. I never pursued it as 0.0002 Hz is pretty much in the noise for any practical use. Far better than the stability of any piece of gear I work on. I am keeping my eyes open for a deal on a GPS rubidium. 73 Vern N1CKX
NO, No, no; then I will miss out on the GREAT deal ! ! ! But if you lock a clock into the Rubidium Standard and loose GPS lock... The clock should still be correct to less than a second after one year. Good hunting ! tjl
thank for the testing explanation.
Your Welcome
Thanks! Sounds like the cats meow. Dave, WB8VQV
Thanks for watching and the comments.
Great video but What is the Q of the GPS receiver???? Hi Hi
Hi Glenn, Sharp eyes. Most folks don't even know what that unit is. Thanks for watching.
Thank you for a great video ! By having more than one 10 MHz standard (3 to 5 would be a good starting point) you could tell when one is off. The big national labs around the world go to Paris, France to vote on the official time. Waiting on a display board to mount on my ThunderBolt GPSDO. Also like the OCXO because it will drift less with age... The Rubidium has an operating life of about twenty years, give or take a few years... And have a couple WWVB clocks and the Computer clock links to NIST in Colorado. tjl
Your welcome. I have my eye open for a couple more. It's a sickness. One I can live with.
want to know more about these GPSDO units?
www.eevblog.com/forum/testgear/bg7tbl-gpsdo-master-reference/
Hi, thanks for the link and for watching. There is a good breakdown of the testing on the Time Nuts site. www.leapsecond.com/time-nuts.htm
I can live with an error of 2 Hz at 10 GHz.
get one of the trimble or oscilloquartz based ones. no error.