Hi all,

I am in need of a HP OCXO type 00105-6013. It is used in the 5061A and several other units. If anyone has one available and is able to mail it to Australia I would be happy to hear from you.

Regards to all,

Morris

Could a modern replacement be made to fit in the available space?
Or are you looking to keep things all original?

ed

Never mind, I forgot what the 5061A was...

Did they not update it with one of the 10811 variants? They certainly did for the later 105B.

David

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Hi Morris,

I've a 00105-6012 spare if you want it, I'm in the city of all seasons in one day (Melbun).

Re retrofitting a 10811, apart from the mechanical differences, the 00105-6012 and 6013 are 5MHz oscillators so that would have to be accomodated also.

Waz

Some pictures for reference (from expired ebay listing) of the 18011 oscillator & the extra boards, I can't comment any further as I haven't got one of these.

David

Hi Waz,

I'm in Melbourne too so if the 6012 is compatible that would be terrific! The 6013 has four SMB connectors and 3 or 4 pins for single wire connectors for the power supplies and monitors grouped together at one end and another two single wire pins underneath for the fast warm up power. Does the 6012 look like that?

Cheers,

Morris

On Tue, Jan 2, 2024 at 10:11 AM, factory wrote:

Some pictures for reference (from expired ebay listing) of the 18011 oscillator & the extra boards, I can't comment any further as I haven't got one of these.

Thanks David,

I have a possible source for a 18011 but if I go down that path I would need to make up a substitute for the 05061-6199 interface board shown in the pic. It doesn't look too complex.If anyone has a schematic of that board I would love to see it. Shoehorning the 18011 into the 5061A would be an interesting challenge.

Regards,

Morris

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On Tue, Jan 2, 2024 at 01:54 PM, J. L. Trantham wrote:

Thanks very much for the link. It's exactly what I was looking for!

Morris

Hi? Morris,

That's the beast! I've two, recovered from 5360A counters, one I've repurposed as a general purpose 5MHz source and a spare, which I'll pass on to you if it suits.

If memory serves, two of the smb connectors are for the efc control and the other two are oscillator outputs. On the units I have, the pins near the smb connectors are +24V for the heater, +20V for the oscillator, +15V out for the efc pot and an output for the heater on/off light. The case is the power supply common and there is a blade screwdriver slot at the connector end for coarse frequency control.

The two pins at the other end are for the *117VAC* fast warmup heater and all the tapped mounting holes in the case are imperial.

Let me know if that will suit.

Regards,

Waz

What happened to the 5360A counters? Not seen any for sale in the UK for years, I was warned they are very unreliable, but this doesn't put me off adding one to my collection.

David

On 1/4/24 16:28, factory wrote:

What happened to the 5360A counters? Not seen any for sale in the UK for years, I was warned they are very unreliable, but this doesn't put me off adding one to my collection.

I have one, as does a local partner-in-crime, both not (yet) working. They're supposed to be pretty amazing counters in many ways, but one of HP's more complex and ambitious designs.

They're very heavy for their size; that may put some people off when deciding to sell them.

-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA