Peregrine makes two delta-sigma PLLs (PE9763 and PE97632) with pins for setting the frequency in small increments. They are only available in a rad-hard version but I haven't received a response from Peregrine about pricing and availability. The rad-hard versions of the integer-N PLLs that are compatible with the current devices are $2600 for 25 units with a 16-week lead time. I expect that the delta-sigma PLLs will be somewhat more expensive. The URX Initialization document describes the options for PLLs.
73,
John KD6OZH
We have the option of buying PLLs (with more pins) that can be hard-wired to a particular frequency. These PLLs are much more expensive and have longer lead times as they are space rated.
This is an option that we should consider. I would like more details.
73's Bob