I can't find any information about the best place to pick off COS, but I did find an article in "220 Notes" that describes a modification to the 13-513 squelch that makes it operate faster and cleaner. I can scan it if you are interested.
73, Joe, K1ike kc8lts wrote: > I'm looking to use this radio as a link radio on my 900 repeater to > link it to my 220 repeater and need to know where to find a good COS > signal location. I'm planning to tie this signal into one of the open > pins on the accessory connector on the back, so all the needed signals > are available easily from the connector. I searched the archives and > the website, but did not see where anyone had said where they picked > off the COS for use in their repeater/link radio conversions. > > Thanks, T.J. > >

