[time-nuts] Trimble Thunderbolt, any easy way to create 500 MHz
djl at montana.com
Wed May 15 15:53:13 EDT 2013
I have a 500 MHz Hi-Q bandpass cavity. 15 pounds, silver plated brass.
All you need is a step recovery diode driven by the 10 MHz sq wave or
spikes, and a couple of amplifiers. Might have to keep it in a beer
cooler, but nothing's perfect :-)
> On Wed, May 15, 2013 at 10:05 AM, <johncroos at aol.com> wrote:
>> Re: Trimble Thunderbolt, any easy way to create 500 MHz
>> 2. Use one of the modern phase lock loop chips with internal VCO from
>> National, Analog Devices, and others. The down side is that most of
>> require an associated PIC or similar processor to load - even for one
>> frequency. However for one with the required software skills this
>> most likely be the lowest cost and most straight forward approach.
> Which chips to look at? I've used a 4046 but it looks like there is
> something better with a digital interface that works a higher frequency.
> What is the easiest to use and with affordable prices.
> BTW While working with a bare PIC requires some hard to acquire
> new uP platforms like Arduino make software easy for just about anyone.
> Chris Albertson
> Redondo Beach, California
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