Maybe you could check out this:
<http://forms.analog.com/form_pages/rfcomms/adisimpll.asp>
"ADIsimPLL" from Analog Devices.
I'm no expert but it looks like Analog has something you can use.
--
Martin K

Art wrote:
> I need a simple, low cost and relatively inexpensive exciter (single 
> frequency) for 2 meters, and was wondering if users here might have 
> any ideas. I want it to take an 18 Mhz quartz crystal input and 
> output 10 to 30 milliwatts at 144 Mhz.
>
> There are some user programmable oscillators that are suitable for 
> clock drivers in microprocessors, they are not suitable, to much 
> jitter and are not stable enough to stay on the same frequency.
>
> A PLL chip is ok, except that any chip I found takes a lot of support 
> circuitry (outboard divide by N counters and/or vco's), and they all 
> need a microprocessors to talk to the chip to determine it's divide by n value.
>
> Maxim has some low power transmitter chips, but they are unsuitable 
> because the vco is built in and cannot oscillate at 2 meters (they 
> will only oscillate from 300 to 500 Mhz)... Unfortunately, they did 
> not bring provisions to the outside world for allowing the user to 
> change the vco's frequency of operation.
>
> I'd rather not design multipliers myself, so I'm really hoping for a 
> ready made module or a simple to use chip.
>
> Any ideas?
>
> Thanks,
>
> Art
>
>
>   
-- 
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