I'd like to communicate with someone who has an HP-113AR/BR Frequency Divider and Clock, especially someone who has one actually operating. Mine seems to be noisy (motor/gear noise, not 1 KHz whine) and hard to start. Having never seen one of these before getting mine, I have no idea whether mine is normal or abnormal. It would be useful to communicate, via this list or privately, with someone who has more experience. Mine is an "AR," serial 029-00156. Jeremy

Hi Jeremy, The HP113BR is exactly as you describe it. The prevailing noise is that of the rotating mechanisms of the clock. To start it, you have to quickly turn the internal knob in the right direction so that the clock rotates counterclockwise. For more information ask. Luciano timeok@timeok.it www.timeok.it Da "time-nuts" time-nuts-bounces@febo.com A "Discussion of precise time and frequency measurement" time-nuts@febo.com Cc Data Wed, 3 Jan 2018 22:15:23 -0800 Oggetto [time-nuts] Anyone have a working HP-113AR/BR Clock? I'd like to communicate with someone who has an HP-113AR/BR Frequency Divider and Clock, especially someone who has one actually operating. Mine seems to be noisy (motor/gear noise, not 1 KHz whine) and hard to start. Having never seen one of these before getting mine, I have no idea whether mine is normal or abnormal. It would be useful to communicate, via this list or privately, with someone who has more experience. Mine is an "AR," serial 029-00156. Jeremy _______________________________________________ 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.

Hi I would second the previous comment on the 113. Every time I have seen one it has been a really noisy device. Certainly *not* what you would want in anything described as a “quiet lab”. Since it’s full of gears (like a Teletype) proper lubrication and cleaning are going to be part of the process. The gotcha there will be getting old lube out of odd places. I don’t ever remember anybody pointing to there unit and smiling … Bob > On Jan 4, 2018, at 1:15 AM, Jeremy Nichols <jn6wfo@gmail.com> wrote: > > I'd like to communicate with someone who has an HP-113AR/BR Frequency Divider and Clock, especially someone who has one actually operating. Mine seems to be noisy (motor/gear noise, not 1 KHz whine) and hard to start. Having never seen one of these before getting mine, I have no idea whether mine is normal or abnormal. It would be useful to communicate, via this list or privately, with someone who has more experience. Mine is an "AR," serial 029-00156. > > Jeremy > > _______________________________________________ > 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.

Thank you for the inputs. (I wonder what the original users of this thing did in 1960?) To quiet mine, I purchased a small rack cabinet enclosure, just big enough for a single 4U instrument, and mounted the 113AR inside with all the remaining space stuffed with Finerglas® house insulation. That has taken the edge off of the noise, making it almost tolerable. The next step is a layer of automotive sound system butyl rubber insulation on the 113AR cabinet and on the clock mechanism itself. Jeremy On Thu, Jan 4, 2018 at 6:10 AM Bob kb8tq <kb8tq@n1k.org> wrote: > Hi > > I would second the previous comment on the 113. Every time I have seen one > it > has been a really noisy device. Certainly *not* what you would want in > anything > described as a “quiet lab”. Since it’s full of gears (like a Teletype) > proper lubrication > and cleaning are going to be part of the process. The gotcha there will be > getting > old lube out of odd places. I don’t ever remember anybody pointing to > there > unit and smiling … > > Bob > > > On Jan 4, 2018, at 1:15 AM, Jeremy Nichols <jn6wfo@gmail.com> wrote: > > > > I'd like to communicate with someone who has an HP-113AR/BR Frequency > Divider and Clock, especially someone who has one actually operating. Mine > seems to be noisy (motor/gear noise, not 1 KHz whine) and hard to start. > Having never seen one of these before getting mine, I have no idea whether > mine is normal or abnormal. It would be useful to communicate, via this > list or privately, with someone who has more experience. Mine is an "AR," > serial 029-00156. > > > > Jeremy > > > > _______________________________________________ > > 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. > -- Sent from my iPad 4.

Jeremy I will speculate the noise simply was tolerated. At the time these would have been a pretty big to do. It was top line HP after all. Most likely other fans in the divider chains, receivers, scopes competed for attention. But that was a bit before my time. Regards Paul WB8TSL On Fri, Jan 5, 2018 at 6:43 PM, Jeremy Nichols <jn6wfo@gmail.com> wrote: > Thank you for the inputs. (I wonder what the original users of this thing > did in 1960?) To quiet mine, I purchased a small rack cabinet enclosure, > just big enough for a single 4U instrument, and mounted the 113AR inside > with all the remaining space stuffed with Finerglas® house insulation. That > has taken the edge off of the noise, making it almost tolerable. The next > step is a layer of automotive sound system butyl rubber insulation on the > 113AR cabinet and on the clock mechanism itself. > > Jeremy > > > On Thu, Jan 4, 2018 at 6:10 AM Bob kb8tq <kb8tq@n1k.org> wrote: > > > Hi > > > > I would second the previous comment on the 113. Every time I have seen > one > > it > > has been a really noisy device. Certainly *not* what you would want in > > anything > > described as a “quiet lab”. Since it’s full of gears (like a Teletype) > > proper lubrication > > and cleaning are going to be part of the process. The gotcha there will > be > > getting > > old lube out of odd places. I don’t ever remember anybody pointing to > > there > > unit and smiling … > > > > Bob > > > > > On Jan 4, 2018, at 1:15 AM, Jeremy Nichols <jn6wfo@gmail.com> wrote: > > > > > > I'd like to communicate with someone who has an HP-113AR/BR Frequency > > Divider and Clock, especially someone who has one actually operating. > Mine > > seems to be noisy (motor/gear noise, not 1 KHz whine) and hard to start. > > Having never seen one of these before getting mine, I have no idea > whether > > mine is normal or abnormal. It would be useful to communicate, via this > > list or privately, with someone who has more experience. Mine is an "AR," > > serial 029-00156. > > > > > > Jeremy > > > > > > _______________________________________________ > > > 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. > > > -- > Sent from my iPad 4. > _______________________________________________ > 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. >

Yeah, me too! I worked for that division of HP (02 Frequency and Time) beginning in late 1972, several years after the division moved out of Palo Alto and became the Santa Clara Division. Stuff like the 113AR was 'way beyond my means, of course. I knew a few people who dated from the real early days of HP, guys like Marv Wilrodt, who could remember back to the earliest days of the company. I suppose they're all dead and gone, a pity. Jeremy On Fri, Jan 5, 2018 at 6:28 PM paul swed <paulswedb@gmail.com> wrote: > Jeremy I will speculate the noise simply was tolerated. At the time these > would have been a pretty big to do. > It was top line HP after all. Most likely other fans in the divider chains, > receivers, scopes competed for attention. > But that was a bit before my time. > Regards > Paul > WB8TSL > > On Fri, Jan 5, 2018 at 6:43 PM, Jeremy Nichols <jn6wfo@gmail.com> wrote: > > > Thank you for the inputs. (I wonder what the original users of this thing > > did in 1960?) To quiet mine, I purchased a small rack cabinet enclosure, > > just big enough for a single 4U instrument, and mounted the 113AR inside > > with all the remaining space stuffed with Finerglas® house insulation. > That > > has taken the edge off of the noise, making it almost tolerable. The next > > step is a layer of automotive sound system butyl rubber insulation on the > > 113AR cabinet and on the clock mechanism itself. > > > > Jeremy > > > > > > On Thu, Jan 4, 2018 at 6:10 AM Bob kb8tq <kb8tq@n1k.org> wrote: > > > > > Hi > > > > > > I would second the previous comment on the 113. Every time I have seen > > one > > > it > > > has been a really noisy device. Certainly *not* what you would want in > > > anything > > > described as a “quiet lab”. Since it’s full of gears (like a Teletype) > > > proper lubrication > > > and cleaning are going to be part of the process. The gotcha there will > > be > > > getting > > > old lube out of odd places. I don’t ever remember anybody pointing to > > > there > > > unit and smiling … > > > > > > Bob > > > > > > > On Jan 4, 2018, at 1:15 AM, Jeremy Nichols <jn6wfo@gmail.com> wrote: > > > > > > > > I'd like to communicate with someone who has an HP-113AR/BR Frequency > > > Divider and Clock, especially someone who has one actually operating. > > Mine > > > seems to be noisy (motor/gear noise, not 1 KHz whine) and hard to > start. > > > Having never seen one of these before getting mine, I have no idea > > whether > > > mine is normal or abnormal. It would be useful to communicate, via this > > > list or privately, with someone who has more experience. Mine is an > "AR," > > > serial 029-00156. > > > > > > > > Jeremy > > > > > > > > _______________________________________________ > > > > 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. > > > > > -- > > Sent from my iPad 4. > > _______________________________________________ > > 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. > -- Sent from my iPad 4.