** Mobile phone technology firm Filtronic falls toits lowest level in almost 13 yrs after co proposes moving fromLondon's main market to the junior AIM
** Stock falls 29 pct; bottom performer on the FTSE TechmarkAll-Share Index and the London Stock Exchange
** 3.18x daily average volume traded in first half hour
** Panmure Gordon analysts place forecasts, recommendationand TP under review
** Co says looks to reorganize its share capital
** Says raised 4.5 mln stg via placing (Reuters Messaging:noor.hussain.thomsonreuters.com@reuters.net)