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Cut GPS Antenna Wire??
Greetings from the PacNorWest!
My question is: what problem(s) would I have if I cut the antenna wire to my GPS/chart plotter (Standard Horizon CP-170) and splice with a BNC connector or equivalent? Not sure what the impact would be (loss issues) at the freq used by GPS. I want to relocate the antenna and don't want to pull the antenna wire. If I could cut, relocate and splice the wire the job is soooooo much easier. Any ideas/suggestions? Thanks for your time// Charlie KB7PYF |
Cut GPS Antenna Wire??
KB7PYF wrote:
Greetings from the PacNorWest! My question is: what problem(s) would I have if I cut the antenna wire to my GPS/chart plotter (Standard Horizon CP-170) and splice with a BNC connector or equivalent? Not sure what the impact would be (loss issues) at the freq used by GPS. I want to relocate the antenna and don't want to pull the antenna wire. If I could cut, relocate and splice the wire the job is soooooo much easier. Any ideas/suggestions? Thanks for your time// Charlie KB7PYF I have a 10 meter lead spliced with a BNC connector to my GPS, and the signals are perfectly OK. Remove "nospam" from return address. |
Cut GPS Antenna Wire??
Cutting and splicing the cable is done all the time. Very common practice.
Just as long as you don't short the center conductor to the shield you will be ok. Make sure if the connection is going to be exposed to weather you wrap it in heat shrink or better yet get some 3M rubber splicing tape to seal it back up. P.S. Make sure the unit is turned off prior to cutting the cable (Ya never know who you are talking too) Regards, Brian Stateside Commercial Marine, Inc. (954) 926-3665 Remove NOJUNK from Email for responses via email. |
Cut GPS Antenna Wire??
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Cut GPS Antenna Wire??
You can cut it and add connectors to make a splice but you probably cannot
shorten it. S/V Express 30 "Ringmaster" "Trains are a winter sport" |
Cut GPS Antenna Wire??
SAIL LOCO ) wrote:
: You can cut it and add connectors to make a splice but you probably cannot : shorten it. : S/V Express 30 "Ringmaster" : "Trains are a winter sport" Also GPS runs on an incredibly low signal and there will be an insertion loss for the connector which could cause loss of signal or at least a less reliable hookup to satelites. Philip E. (PHIL.) Sutton Edmonton, AB. |
Cut GPS Antenna Wire??
wrote in message
... SAIL LOCO ) wrote: : You can cut it and add connectors to make a splice but you probably cannot : shorten it. : S/V Express 30 "Ringmaster" : "Trains are a winter sport" Also GPS runs on an incredibly low signal and there will be an insertion loss for the connector which could cause loss of signal or at least a less reliable hookup to satelites. The slight loss from the extra connector will be compensated by the shorter cable. Come on guys, don't be so dramatic about a properly installed connector. The satellite signals vary more due to the radiation pattern of the antenna. Meindert |
Cut GPS Antenna Wire??
Shortening is not a problem at those high frequencies. I wanted to shorten
the cable on the antenna to my Garmin 162 to eliminate a bunch of extra cable. I called Garmin. They said no problem, but it would void the warrantee on the antenna (but not the GPS) because they had no control over the quality of the connector and its installation. Since the unit was already off warrantee, I went ahead and did it. Works fine, signal strength is a touch stronger. -- Chuck Tribolet http://www.almaden.ibm.com/cs/people/triblet Silicon Valley: STILL the best day job in the world. "SAIL LOCO" wrote in message ... You can cut it and add connectors to make a splice but you probably cannot shorten it. S/V Express 30 "Ringmaster" "Trains are a winter sport" |
Cut GPS Antenna Wire??
On a simple BNC type GPS antenna, you can cut and shorten or lengthen. Be
aware that there is usually 5 VDC or in some old equipment 12 VDC run up the coax from the GPS display to power up the electronics in the antenna sensor unit. The GPS frequency is usually downconverted before going to the coax, so loss is not a real big concern. There are other GPS sensors than the coax type, such as NEMA and Raymarine SeaTalk. Once again, be sure power has been turned off to the cable before making cuts, splices, etc. Opening the Antenna and looking for a BNC, SMA, or SLB connector is a good idea, but it is a toss up on what to expect, a connector or solder to PCB. Be sure to water proof your connection if you are in the Pacific NW to keep the moss out. LOL Doug K7ABX "Chuck Tribolet" wrote in message ... Shortening is not a problem at those high frequencies. I wanted to shorten the cable on the antenna to my Garmin 162 to eliminate a bunch of extra cable. I called Garmin. They said no problem, but it would void the warrantee on the antenna (but not the GPS) because they had no control over the quality of the connector and its installation. Since the unit was already off warrantee, I went ahead and did it. Works fine, signal strength is a touch stronger. -- Chuck Tribolet http://www.almaden.ibm.com/cs/people/triblet Silicon Valley: STILL the best day job in the world. |
Cut GPS Antenna Wire??
Boy we have beat this one into the ground, huh NG. Just cut the cable and put
a connector on it. Don't worry about all this other stuff. If it doesn't work then you most likely shorted it. Just ohm it out prior to tunring it on. NBFD - Its done ALL THE TIME. If it worked before cutting it, it will work after you put a connector on it (taking in consideration no shorts) Brian Remove NOJUNK from Email for responses via email. |
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