I have dissembled my AR-108 to use the RF board in a prototype for a 121.5
MHz beacon locator. I need to be able to programme the synthesiser directly
via the RF board connector. I have downloaded information on the TOKO
TK10930V receiver chip that Maycom use but I can't identify the synthesiser
chip despite extensive search. I need a data sheet for the synthesiser in
order to be able to programme it directly. The chip is labelled "LV2105"
(top line) and then "2KC9" (bottom line). It has no manufacture ID markings
or country of origin markings. I suspect that it is a Chinese or Taiwanese
copy, possibly of a Fujitsu part.

I would be grateful if someone could shed some light on this mysterious device.