Re: [time-nuts] [hp_agilent_equipment] Re: Upgrade an HP 5342A microwave frequency counter to have an oven oscillator.

2014-12-02 Thread Scott McGrath
The 5342A counter and the 5345A counters both predate the 10811A and were originally fitted with 10544A oscillators for the option 1 high stability timebase Once the 10811A was released the instruments were fitted with the 10811A as a production change going forward and service replacements we

Re: [time-nuts] [hp_agilent_equipment] Re: Upgrade an HP 5342A microwave frequency counter to have an oven oscillator.

2014-12-02 Thread Bob Camp
Hi One clarification - there are multiple ways you can design an OCXO: 1) You can use an outer oven to improve the temperature stability under normal conditions. 2) You can use a second oven to “help” at the cold end of the range (maybe below -20C) 3) You can simply do a really good single o

Re: [time-nuts] [hp_agilent_equipment] Re: Upgrade an HP 5342A microwave frequency counter to have an oven oscillator.

2014-12-02 Thread Dr. David Kirkby (Kirkby Microwave Ltd)
On 2 Dec 2014 03:10, "wb6dgn_...@att.net[hp_agilent_equipment]" < hp_agilent_equipm...@yahoogroups.com> wrote: > > Isn't the 10811 a "double oven" oscillator (an oven within an oven)? I also believe it has anticipator circuitry to predict changes based on environmental parameters. Or...am I confu

Re: [time-nuts] [hp_agilent_equipment] Re: Upgrade an HP 5342A microwave frequency counter to have an oven oscillator.

2014-11-30 Thread Bob Camp
Hi > On Nov 30, 2014, at 4:28 AM, Dr. David Kirkby (Kirkby Microwave Ltd) > wrote: > > On 30 Nov 2014 05:55, "Orin Eman orin.e...@gmail.com > [hp_agilent_equipment]" wrote: > >> Weren't you looking at the LTE Lite? It should do fine as long as you > can get the antenna well situated (not ne

Re: [time-nuts] [hp_agilent_equipment] Re: Upgrade an HP 5342A microwave frequency counter to have an oven oscillator.

2014-11-30 Thread Dr. David Kirkby (Kirkby Microwave Ltd)
On 30 November 2014 at 15:05, fjdvr...@zonnet.nl [hp_agilent_equipment] wrote: > > Dave, > > I have had a 10811 in the 5342A. Not really a problem. However the thing is > that while your counter is switched off the outside temp of the oven warms > up, no surprise here, but when you switch it on,

Re: [time-nuts] [hp_agilent_equipment] Re: Upgrade an HP 5342A microwave frequency counter to have an oven oscillator.

2014-11-30 Thread Dr. David Kirkby (Kirkby Microwave Ltd)
On 30 Nov 2014 05:55, "Orin Eman orin.e...@gmail.com [hp_agilent_equipment]" wrote: > Weren't you looking at the LTE Lite? It should do fine as long as you can get the antenna well situated (not necessarily outdoors, some of us get along with having it in an upper floor room). I have one on ord