Hi.
The only fuse holder that I had that issue with was the fuse holder for the
7.5 amp fuse in my old Kenwood TR7625. It got so stinking hot that I
actually melted the fuse holder. However, that stupid little quick
disconnect that Kenwood was using on their mobil 2 meter radios got so hot
on my Kenwood TR751A, that it melted the connector together so you couldn't
get it apart. I never did get it apart, and for the little pigtail that
would have been left, I suspect I would have had to start over with a
completely new cord coming off the board in the radio. I probably would
have used a little heavier gauge of wire and probably would have gone to a
different style of connector, to boot. I've never used Anderson power
poles, but even the good old Cinch Jones connectors would have been better
than what Kenwood used.
73, de Lou K2LKK
At 10:39 AM 11/21/2007 -0700, you wrote:
>it'll happen at the fuse holder too allot of the time.
>Usually the fuse holder is near the back of the radio and the little peace
>of wire between the fuse holder and the inline quick release connecter that
>most mobile harnesses come with now can get super hot if the crimp
>connections aren't quite on properly.
>Everytime i come across a new harness I put in regular blade type automotive
>fuses and that helps with connections and increasing the surface area of the
>fuse connection.
>73
>Colin, V A6BKX
>----- Original Message -----
>From: "John Miller" <[log in to unmask]>
>To: <[log in to unmask]>
>Sent: Tuesday, November 20, 2007 10:05 PM
>Subject: Re: three more TS480 questions
>
>
> > I've seen that happen with short runs even at the state EOC I help out at
> > once. Someone put the Anderson power poles on in a hurry. 1 day someone
>put
> > my radio in high power and I didn't know it, a couple minutes in to the
>net
> > call up for the month, my radio shut off. That's what happened there was
>the
> > crimp wasn't very good, on a short connection and the connector got hot,
> > melted inside and that was that. I had to go back later in the week for
> > something anyway and put fresh connectors on but that day, I got it
>working
> > again but we had to run it on low power and be careful. Now that it's
>fixed,
> > it works as it should, high power or anything.
> > ----- Original Message -----
> > From: "Lou Kline" <[log in to unmask]>
> > To: <[log in to unmask]>
> > Sent: Tuesday, November 20, 2007 11:23 PM
> > Subject: Re: three more TS480 questions
> >
> >
> > > Hi Tom.
> > >
> > > I would be more worried about IR losses than RFI. I think the voltage
> > > drop
> > > from a long wire like that could be fairly significant at 12 volts
>unless
> > > your wire diameter is large and you have very very good connections.
> > >
> > > I have found that when you are running in excess of 20 amps, even fairly
> > > small amounts of resistance can significantly adversely affect your
>rig's
> > > performance. I found this out the hard way a couple of years ago when I
> > > couldn't seem to get more than 75 watts out of my Icom IC706 and was
> > > getting reports that it was FMing on voice peaks. While I couldn't
>really
> > > see a problem with the ohm meter, I soon discovered the problem when I
> > > touched the wire near the binding posts and nearly burned my fingers.
>It
> > > seems that the crimp on wire ends made a good enough connection to look
> > > good for a continuity test, but were resistive enough to generate quite
>a
> > > bit of heat when running an HF rig full power. A couple of minutes with
>a
> > > good hot soldering iron and the power output came right up to 100 watts.
> > >
> > > 73, de Lou K2LKK
> > >
> > >
> > >
> > > At 06:40 PM 11/20/2007 -0500, you wrote:
> > >> Hi, Ed.
> > >>
> > >>Well, let me explain it to you this way:
> > >>
> > >>I probably won't be using the TS480 while truly mobile. The reason is
> > >>that
> > >>I can't get my screw-driver antenna on the back of the RV as high as it
> > >>needs to be above the roof line to travel safely and keep things legal.
> > >>
> > >>Therefore, I will be using the TS480 only when camping and able to use
> > >>shore
> > >>power.
> > >>
> > >>I checked with my RV mechanic at the dealer where we bought the motor
>home
> > >>about running the TS480 off battery power. He is a ham, and he
>indicated
> > >>to
> > >>me that the connections to my batteries are far enough away from where
>I'd
> > >>have the rig that I'd have to run quite a cable to get from the battery
> > >>source to the rig. He warned me that introducing more cable into the
> > >>system
> > >>like that might create potential for more RFI.
> > >>
> > >>I don't know how accurate or true that is, but this is what he told me.
> > >>
> > >>I don't know if this helps explain things or not, so if you have other
> > >>thoughts, please let me know.
> > >>
> > >>You can e-mail me privately at
> > >>
> > >>[log in to unmask]
> > >>
> > >>Thanks, Ed, and 73 from Tom Behler: KB8TYJ
> > >>
> > >>----- Original Message -----
> > >>From: "Ed Malmgren" <[log in to unmask]>
> > >>To: <[log in to unmask]>
> > >>Sent: Tuesday, November 20, 2007 3:26 PM
> > >>Subject: Re: three more TS480 questions
> > >>
> > >>
> > >> > Tom, I am stumped about your wanting a power supply for your M H rig.
> > >> > The
> > >> > only way you will be getting 120 VAC is to be plugged into shore
>power
> > >> > or
> > >> > running your generator or having a large inverter to provide this
> > >> > voltage.
> > >> > If your rolling down the road mobile you will have to be running your
> > >> > on
> > >> > board generator or a large inverter. I am taking the 12 volts off
>the
> > >> > batteries and the alternator in the engine keeps the batteries up and
> > >> > if
> > >> > your plugged into shore power the bats are being charged so I guess I
> > >> > don't
> > >> > understand what your looking for. sorry for the band width.
> > >> > Ed K7UC
> > >> >
> > >> >
> > >>
> > >>
> > >>
> > >>
> > >>--
> > >>No virus found in this incoming message.
> > >>Checked by AVG Free Edition.
> > >>Version: 7.5.503 / Virus Database: 269.16.1/1140 - Release Date:
> > >>11/19/2007 7:05 PM
> > >
> > > Louis Kim Kline
> > > A.R.S. K2LKK
> > > Home e-mail: [log in to unmask]
> > > Work e-mail: [log in to unmask]
> > > Work Telephone: (585) 697-5740
> > >
> >
> >
> >
> > --
> > No virus found in this incoming message.
> > Checked by AVG Free Edition.
> > Version: 7.5.503 / Virus Database: 269.16.1/1141 - Release Date:
>11/20/2007 11:34 AM
> >
> >
>
>
>
>
>--
>No virus found in this incoming message.
>Checked by AVG Free Edition.
>Version: 7.5.503 / Virus Database: 269.16.2/1143 - Release Date:
>11/21/2007 10:01 AM
Louis Kim Kline
A.R.S. K2LKK
Home e-mail: [log in to unmask]
Work e-mail: [log in to unmask]
Work Telephone: (585) 697-5740
|
