Will forward tomorrow. Yes I recall my lamp voltage is also very good. On Thu, Nov 30, 2017 at 8:41 PM, Jerry Hancock <[email protected]> wrote:
> Paul, send whatever you have to clist <mailto:[email protected]> at hanler > (without the D) dot com > > Also, the caps we replaced were only 4 electrolytics. 3 x 470uf 25v and a > 270uf at 16V. I used a 330uf 25v for the later. > > I’ve seen them for like $30 Canadian. I think they are inexpensive due to > the failure of the caps, no rs232, no docs, etc. I get great lamp voltage > on mine, all over 10V if that says anything. They seem stable but I don’t > have the test setup needed or much to compare them to except my GPSDOs. I > hope to have a Cesium standard by end of year and I am building the TPLL > test set. But it seemed like there was some decent work done on the > physics package. Looks like it was all assembled by hand, then taped-up, > sealed twice and clamped. > > Thanks. > > Jerry > > > On Nov 30, 2017, at 5:24 PM, paul swed <[email protected]> wrote: > > > > Jerry > > I have some dribs and drabs of details on the units I have. Happy to send > > whatever I have to you directly. Suspect its to large for FEBO. What I > can > > tell is they must have been considered quite good and for military use. I > > haven't run mine alot because I was concerned about the temp like you. > Nor > > have I really dug in. They just worked from day one. > > Granted maybe better if I look at the caps. The good thing about the unit > > is the connector is clearly labeled with the pin functions. So I was able > > to operate them right out of the hamfest. As I recall these were very > very > > inexpensive. > > Regards > > Paul > > WB8TSL > > > > On Thu, Nov 30, 2017 at 8:04 PM, Jerry Hancock <[email protected]> wrote: > > > >> Paul, The units Gilbert gave me were TS-RFS. They are fairly large. > The > >> physics end is about 5”x2”x2" and overall length about 9”. They lock > >> pretty quickly now that I’ve replace the caps. They can drive 50ohms > >> pretty hard, outputting a square wave. I’m thinking of bolting on some > >> fins to the physics end. Just two points: 1) it would be nice to dial > them > >> in closer; and 2) I wish I had equipment to test them more accurately. > I’m > >> working on building one of the Tight PLL test sets to solve #2. Gilbert > >> suggested we look to see if we could tap into the field current somehow > to > >> set the frequency more accurately. > >> > >> > >>> On Nov 30, 2017, at 3:44 PM, paul swed <[email protected]> wrote: > >>> > >>> Jerry > >>> You have some EG&G RBs. Thats great news. Now I am not alone. I have 2 > >> also > >>> that work. I have found little details on them. > >>> That said I believe they are intended to be mounted on a heat sink. One > >> end > >>> surely looks like that whats would be done. > >>> I believe mine are LCR-10-T. Might have to double check that. > >>> Regards > >>> Paul > >>> WB8TSL > >>> > >>> On Thu, Nov 30, 2017 at 6:22 PM, Jerry Hancock <[email protected]> > wrote: > >>> > >>>> I was able to get all 5 of these EG&G Rubidium Frequency Standards > >> running > >>>> by replacing the caps as another member found. They have a large > >> heatsink > >>>> on them, no fins, and are running at 43C. Is that too hot? Should I > >> bolt > >>>> them down to a larger heatsink? They consume a little over 9w after > >> they > >>>> lock, about double that while warming up. > >>>> > >>>> The only other issue I see is that the 8bit frequency setting doesn’t > >>>> allow me to set the frequency closer than 5E-11. I don’t know if this > >> is > >>>> good for these units and RFS in general or not. > >>>> > >>>> Thanks. > >>>> > >>>> Jerry > >>>> > >>>> [/begin buttkissing] > >>>> > >>>> PS: I have learned quite a bit from this group in the past couple of > >>>> months. John Miles, Gilbert, Mark Sims, Bob, etc, etc have been a lot > >> of > >>>> help and have added a lot of enjoyment to my hobby. > >>>> > >>>> [/end buttkissing] > >>>> > >>>> _______________________________________________ > >>>> 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. > >> > >> _______________________________________________ > >> 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. > > _______________________________________________ > 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.
