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Old 14-09-2010, 08:50   #16
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Excerpted from ➥ Furno Radar Install

“Radar Scanner Cable Splices ...
... Junction Box Splice Cautions:
1. Screened conductors: The screen or drain shield must be spliced adjacent to it’s core conductor, and the unscreened length of core kept to a minimum (<1.25").
2. Connect all power, data, & co-ax cables in the same sequence (on terminal strip) as used for manufacturer’s connector or terminal. Send & receive conductors will normally be adjacent to each other.
3. Small conductors: Take extraordinary care not to damage very small conductors.
4. Ferrites: Most manufacturers will recommend a specific ferrite bead, to be installed on each end of the splice.
Protection: Protect all cables from moisture, UV & weather exposure, mechanical abrasion, heat, etc. Avoid tight bends ...”
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Old 14-09-2010, 09:59   #17
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Beware, ALL electronic connections in a marine environment are subject to corrosion!! The more extra connections you put in a cable the greater the chance for correction. Smaller gauged wire has been known to corrode within the insalation itself.
Also, never shorten the factory length of any cable used to transmit a signal ie. from a antenna to a receiver or from one unit to another. The time it takes for a electronic pulse to travel from point A to point B is critical.
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Old 14-09-2010, 10:04   #18
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Quote:
Originally Posted by goboatingnow View Post
Because that produces the crapiest join you could imagine. A proper crimp is always better then either screws or solder.

Dave
That's exactly how my old Raytheon radar cable attached in the scanner.
Terminal strip and screws.
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Old 14-09-2010, 11:28   #19
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Quote:
Originally Posted by John A View Post
Beware, ALL electronic connections in a marine environment are subject to corrosion!! The more extra connections you put in a cable the greater the chance for correction. Smaller gauged wire has been known to corrode within the insalation itself...
Indeed, and as noted at:
Furno Radar Install

Quote:
Originally Posted by Rick View Post
I agree with Will Burton and Gord...
... Splicing is extremely difficult to do properly even for a good tech who knows his cables. One problem is that it takes specialty tools to do the necessary crimps for those tiny wires (and soldering is just not as good...yes, many of you will bridle at this yet guaranteed soldering quality is very qualitative while the crimping is not when using proper tools)...
Quote:
Originally Posted by GordMay View Post
Radar Scanner Cable Splices:
The problems associated with scanner cable splices are legion, even tho’ subtle. Perhaps Rick might elaborate.
Unshielded terminal strips are likely to create problems with signal loss, timing delay, signal interference, and/or EMI radiation.
There are (a dozen or so) small wires, difficult to work with, and it’s difficult to keep untwisted and/or unshielded lengths to minimum, while spreading out to mate on terminals.
I’d (when practicable) prefer to use a a proper, weather-proofed, barrel-type locking, shielded plug set, comparable to the OEM set supplied with the cable - or a manufacturer’s cable extension set...
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