I think you are correct on both counts. Running dual cables to the battery
has the advantage of noise cancelling. Think about it. Works similar to
ladder line for an antenna.
The advantage of dual fuses has to do with the unlikely possibility of a
short to nearby positive cable near the radio, and past the fuse. The
negative fuse will then take the responsibility to terminate the current.
73, Keith NM5G
From: Yaesu <email@example.com> On Behalf Of Randy Berry
Sent: Wednesday, June 12, 2019 9:51 AM
Subject: [Yaesu] Direct Battery Hookup.
OK, not exactly a Yaesu question, but a question about most mobile radios
including Yaesu sold today.
I had a disagreement with someone about the need to hook both negative and
positive directly to the cars battery as opposed to cutting the ground wire
from the provided power cord and grounding it to the cars chassis near the
My argument is that the battery will filter off some of the noise generated
by the alternator if both are hooked directly, he said that is not the case
and insisted a chassis ground near the radio is best.
If this is true why do practically every automobile electronics manufacturer
provide a cable with both Neg. and Pos. leads, and recommend direct connect?
In my experience I have had better luck connecting 2 way radios, car stereos
and amplifiers directly to the battery.
The argument of having 2 fuses, one on the Neg, and one on the Pos, was also
brought up. I have a lot of equipment that came with fuses on both leads. My
Icom's, kenwood's and Yeasu's all have dual fuses.
Again, the engineers who designed the radio know a hell of a lot more than
me and some bloke on social media do. And there must be a reason for the
recommendation of going direct, and the 2 fuses must be there for a purpose.
I recommended using both fuses as provided, and direct to the battery.
I was told I was wrong.
Who is right?
tnx es 73 de Randy, N3LRX/8
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