Many of the older Standard Horizon Handhelds, particularly the one that was chocolate in color (can't remember the model #...), could be EASILY modified for tx/rx for about 2 MHz above and 2 MHz below the VHF Marine band.
BE VERY CAREFUL!!! Even though we have state of the art police departments using trunked "bagigahertz" systems now, most every local yokel and Sheriff's Departments still uses frequencies VERY close to the VHF marine band AND these are typically covered by the increased band spread of a modified Standard Horizon radio.
I've been out of the Marine Business for a few years now and do not recall anything special about the 230S. It is typically VERY EASY to tell if your standard HH is modifiable. Just open the puppy up and look for a little micro-slider switch on one of the circuit boards. It is very obvious, and the only switch of that type in the radio. "Switch the switch" to the opposite position from what it is in, and Voila, "extra" channels galore.
As far as the owners manual goes, call West Marine, Boater's World or Boat US (Or your local equivalent) and have them special order you one.
Have fun.
_____
Buttfuzz in the Mobile
SuperStar Gr, KLV203, Wilson5K, 575-M6
Buttfuzz at the Base
Galaxy Class StarShip, A99wGPK, D104-M6B
Buttfuzz Built Deuce and a Quarter</p>
Edited by: <A HREF=http://pub86.ezboard.com/bworldwidecbradioclub.showLocalUserPublicProfile?login=buttfuzz>ButtFuzz</A>
at: 7/5/02 1:16:02 am