I have an extra R/C controlled video signal switch for sale. It is new (never installed). $xx + shipping, PayPal or money order (PayPal add 3%).
It allows you to select between two cameras (or any NTSC/PAL video sources for that matter) using a spare R/C channel. It has high video bandwidth and so image quality is not affected. Size 1.5" x 1.7", 12 grams with connectors. The board includes a JST female connector for DC power. Full details to the video switch are found here: http://www.rc-cam.com/rcswitch.htm
Edited by Mr.RC-Cam, 21 February 2013 - 06:10 PM.