[time-nuts] Question on GPS and reference standards

[Joseph Gray]

Not knowing all the particulars and requirements, I may be off base,
but instead of spending money trying to frequency stabilize a 20+ year
old radio (HF-80), wouldn't it make more sense to spend it on a
modern, inexpensive HF rig? You can even get a TCXO option for some
rigs. This should be stable enough for most common HF data protocols.

I assume that this is for Amateur use? If not, then my comments may not apply.

Joe Gray
W5JG

On Tue, Dec 21, 2010 at 9:48 PM, Bruce Griffiths
<bruce.griffiths at xtra.co.nz> wrote:
> A conjugate regenerative divider will have  asinewave output.
> It only requires a mixer an amplifier or two and a couple of bandpass
> filters.
> It will have lower phase noise than all(?) alternative techniques.
>
> Bruce
>
> Tom Van Baak wrote:
>>
>> A good question for the group...
>> /tvb
>>
>>> Hi:
>>>
>>> I have both a GPS Frequency standard (Trimble Thunder Bolt) which outputs
>>> the 10
>>> MHz reference and also the 1 PPS signal. In addition, I have a Collins
>>> AEU unit
>>> which has a 10 MHz Rubidium reference inside. Both units work well and
>>> produce a
>>> very accurate reference signal for the units that require a 10 MHz
>>> reference.
>>>
>>> The challenge is that I am looking for a source of a 10:1 frequency
>>> divider so I
>>> can create a 1 MHz reference for my Rockwell Collins HF-80 system. Can
>>> you
>>> suggest a source of a high quality frequency divider that outputs a
>>> (nearly)
>>> sine wave signal? We only need two units - one for production and one for
>>> our
>>> development lab.
>>>
>>> The object is to provide a very accurate source of 1 MHz and 10 MHz to
>>> the
>>> various radio systems used in our disaster and humanitarian relief radio
>>> network. When you send data, you need to be exactly on frequency.
>>>
>>> Any help would be great. Just need to be pointed in the right direction.
>>> While
>>> we could try to design something to meet this objective, I am sure that
>>> someone
>>> has already done this.
>>>
>>> Thank you.
>>>
>>> Kevin
>>
>>
>>
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>
>
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