Great practical advice as usual from Ralph. I already removed the Transducer but I can put it back in the hole. Can you recommend what I should use to seal it up again? I'll try a new Sounder head instrument. Thanks again for your advice. Jack
--- In [email protected], "Ralph E. Ahseln" <rahs...@...> wrote: > > Hi, > > I wouldn't be too quick to remove the Transducer. You'd save some money using > the existing one. > > It's been covered on list here several times, And some folks might agree that > it's unlikely that your transducer would be inoperative. > And as long as you don't want a dual frequency sounder which , at the Low > frequency can do Deep soundings, > the commonly installed transducer with an operating frequency of 200 KHz > (50Khz being the "Deep" sounder freq).. will continue to work just fine. > > As long as you DON'T want a transducer that can interconnect with > multi-display units, A simple depth sounder and using the existing > transducer, should allow you to be able to keep the costs down. > > Cable connections may be different. But knowing that the common cable is a > simple Shielded wire.. Almost any kind of a connector would work. A simple > and inexpensive connector can be the male an female connectors called "RCA" > or " Phono" connectors. Commonly seen on the back of Audio amplifiers, they > are effective Coaxial connectors for applications like a depth sounder. > The can be Gold Plated as well. A good thing to have in a Marine environment. > > There is a rare possibility that you may purchase a High Power sounder and > overload the transducer, causing damage, but that would be rare indeed, > There may also be a slight ..Mis-match of transducer impedance. That "might" > show as a slight error in depth reading . > But many sounder units have an "Off Set" adjustment that could be use to > Calibrate to the proper depth. > > Fitting the existing mounting hole is a bit more trouble. > I made a simple "Collar" of STARBOARD to fit the existing hole with a smaller > hole inside in which to fit the unit. > With care it can be made to look like it was made that way... :-) > Depending on the design shape of the Sounder Head, of course.. > > > Best Regards, > > Ralph Ahseln > "Oblio" > Gresham OR > > > > ----- Original Message ----- > From: summerwind6264 > To: [email protected] > Sent: Tuesday, May 12, 2009 11:43 AM > Subject: [IC27A] Depth Sounder > > > > > > I have a 1986 Catalina 27 that needs a new depth sounder. I think it is > original one, Horizon DS-1. I would like to replace with a low cost one and > one that will fit in 4"hole and 1 3/4 thru hull transducer. Any > recommendations? >
