Perrier, Your simple idea is a non workable concept. Instead of whining about the complexity, why not contact Bert or Paul Swed and see if one of them would do you a favor and build the item for you. I do not believe the hookup part is that hard to do and if You follow instructions well it should be quite doable.
Bill....WBBNQ Perry Sandeen wrote: > Fellow Listers, > > Please read and think a bit about my comments before rushing to the reply > button. The comments are meant to be technical. > > When Burt VE2ZAZ posted his HP 3586A/B/C entirely referenced to 10MHz: A > solution, I was drooling with envy to add it to my units. However, after > reading what it took to make and program it I was completely deflated. > > While there are those on the list with extensive educational and technical > resources, Burtâs project may be just fine. And for those who can make it, > go for it. I made a pros and cons list. > > Advantages Dis-advantages > Small- Will fit inside case SMD Components > Low power requirements Needs Programming > Inexpensive Program varies for various models > Awesome build quality Almost comes up with the correct numbers > > Sometimes the only way to solve a problem is with SMDâs, programmed devices > etc. But I suspect that for most of us âsolutionsâ of this type are > really impractical. Some posts seem to suggest that everyone can program > devices, write code, and can work with SMDâs as easily as getting a > hamburger at Micky Dâs. It just ainât so. On my level I have to use the > KISS principle. > > Several alternative methods: > > The cheap method. Turn the crystals 90 degrees so they are perpendicular to > the PC board. Make a simple TL431 temperature regulated circuit (I found it > on the web by a google search) with a bit of copper and insulation. A small > supplemental adjustable tuning capacitor and/or varicap circuit may be > needed. It will probably get one as close as the original programmed mod > IMHO. > > The high priced exact solution. Use a HP 3336 locked to the same external > standard one is using for the HP 3586B. Remove the original crystal circuit > and inject the exact number one needs and get the exact results without any > dithering. > > Iâm blessed to have almost all the test equipment, or its equivalents, > mentioned on this list sans a spectrum analyzer and from postâs that I have > read Iâm way ahead of many of the members. > > Iâve been very impressed, and have learned a great deal, with the posts on > the Tâbolts, answers to my posted qurstions, WWVB, and HP oscillator fine > tuning tips to name a few. > > On subjects over, or in many cases way over, my head I just read and delete > but others find them both fascinating and useful and thatâs just fine. > > Regards, > > Perrier > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
