"Bruce in Alaska" wrote in message
...
In article ,
Michael Porter wrote:

Gotta be very careful though -- with analog transducers, the length of
the cable is figured into the delay time which is what the souonder
uses to work out the depth. Might have to recalibrate.

Michael Porter

There is NO difference between how a digital and analog Depthsounder
determines depth. It is all done by timing the ultrasonic transmit pulse
leaving the transmitter, with the reflected received pulse in the
receiver. The difference is how the information is displayed to the
human operator. The length of the transducer cable is irrelevent
to that timing, as the delay is insignificant when compared to the speed
of ultrasonic sound in water, Fresh or Salt.

Transducer cables certainly can be spliced. It is a relativly easy
process and with the frequencies involved usually less than 400Khz,
any introduction of extra capacitance to the transducer cable will
usually not cause much change in the Tx/Rx tuning of the sounder
circuits themselves.

I am sure that Oldtimers, like Lynn, and Larry, have done this MANY
times, just to save some boater from having to haul the vessel just
because he crushed the tranducer cable by setting an engine block,
or battery on it, while futzing around in the bilge.

Bruce in alaska
--
AMEN
Old Chief Lynn