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]

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 <jerry@hanler.com> 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 -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. >

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 <paulswedb@gmail.com> 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 <jerry@hanler.com> 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 -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/ >> mailman/listinfo/time-nuts >> and follow the instructions there. >> > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.

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 <jerry@hanler.com> 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 <paulswedb@gmail.com> 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 <jerry@hanler.com> 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 -- time-nuts@febo.com > >> To unsubscribe, go to https://www.febo.com/cgi-bin/ > >> mailman/listinfo/time-nuts > >> and follow the instructions there. > >> > > _______________________________________________ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > > and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. >

Paul, send whatever you have to clist <mailto:clist@hanler.com> 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 <paulswedb@gmail.com> 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 <jerry@hanler.com> 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 <paulswedb@gmail.com> 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 <jerry@hanler.com> 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 -- time-nuts@febo.com >>>> To unsubscribe, go to https://www.febo.com/cgi-bin/ >>>> mailman/listinfo/time-nuts >>>> and follow the instructions there. >>>> >>> _______________________________________________ >>> time-nuts mailing list -- time-nuts@febo.com >>> To unsubscribe, go to https://www.febo.com/cgi-bin/ >> mailman/listinfo/time-nuts >>> and follow the instructions there. >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/ >> mailman/listinfo/time-nuts >> and follow the instructions there. >> > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.

Will forward tomorrow. Yes I recall my lamp voltage is also very good. On Thu, Nov 30, 2017 at 8:41 PM, Jerry Hancock <jerry@hanler.com> wrote: > Paul, send whatever you have to clist <mailto:clist@hanler.com> 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 <paulswedb@gmail.com> 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 <jerry@hanler.com> 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 <paulswedb@gmail.com> 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 <jerry@hanler.com> > 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 -- time-nuts@febo.com > >>>> To unsubscribe, go to https://www.febo.com/cgi-bin/ > >>>> mailman/listinfo/time-nuts > >>>> and follow the instructions there. > >>>> > >>> _______________________________________________ > >>> time-nuts mailing list -- time-nuts@febo.com > >>> To unsubscribe, go to https://www.febo.com/cgi-bin/ > >> mailman/listinfo/time-nuts > >>> and follow the instructions there. > >> > >> _______________________________________________ > >> time-nuts mailing list -- time-nuts@febo.com > >> To unsubscribe, go to https://www.febo.com/cgi-bin/ > >> mailman/listinfo/time-nuts > >> and follow the instructions there. > >> > > _______________________________________________ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > > and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. >

With some humor as I looked inside my egg I had replaced the caps also. So it is a common failure. Also note the chip is not a micro but an array or at least a state machine. Regards Paul WB8TSL On Thu, Nov 30, 2017 at 8:47 PM, paul swed <paulswedb@gmail.com> wrote: > Will forward tomorrow. Yes I recall my lamp voltage is also very good. > > On Thu, Nov 30, 2017 at 8:41 PM, Jerry Hancock <jerry@hanler.com> wrote: > >> Paul, send whatever you have to clist <mailto:clist@hanler.com> 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 <paulswedb@gmail.com> 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 <jerry@hanler.com> >> 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 <paulswedb@gmail.com> 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 <jerry@hanler.com> >> 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 -- time-nuts@febo.com >> >>>> To unsubscribe, go to https://www.febo.com/cgi-bin/ >> >>>> mailman/listinfo/time-nuts >> >>>> and follow the instructions there. >> >>>> >> >>> _______________________________________________ >> >>> time-nuts mailing list -- time-nuts@febo.com >> >>> To unsubscribe, go to https://www.febo.com/cgi-bin/ >> >> mailman/listinfo/time-nuts >> >>> and follow the instructions there. >> >> >> >> _______________________________________________ >> >> time-nuts mailing list -- time-nuts@febo.com >> >> To unsubscribe, go to https://www.febo.com/cgi-bin/ >> >> mailman/listinfo/time-nuts >> >> and follow the instructions there. >> >> >> > _______________________________________________ >> > time-nuts mailing list -- time-nuts@febo.com >> > To unsubscribe, go to https://www.febo.com/cgi-bin/m >> ailman/listinfo/time-nuts >> > and follow the instructions there. >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/m >> ailman/listinfo/time-nuts >> and follow the instructions there. >> > >