Hi.

On my previous post, I based my comments primarily on the internal tuner in
the Kenwood TS2000S.  If the 480 will handle 10 to 1, it is a lot more
forgiving than the TS2000S tuner, which really will only handle 3 to 1.

By the way, is there a good wide range auto tuner out there these days that
doesn't use relays?  Or have those motor driven ones gone the way of the
dinosaur?

73, de Lou K2LKK




         At 09:35 AM 8/5/2005 -0600, you wrote:
>Yeh...the 570 says the same that if you have greater then 10 to 1, the
>internal tuner will not tune the antenna...which would lead me to believe
>that the tuner can tune from a 10 to 1 to a reasonable match of 3 to 1 or
>less?
>Is that right or am i missing something there?
>I know it probably wouldn't tune from something as high as a 10 to 1 down to
>a 1 to 1 match, but i think it says something about it being able to tune
>down to at least a 3 to 1...which is where i think the confusion came from
>regarding the 3 to 1 matching.
>Its not that it wont tune anything higher then a 3 to 1, but more that it
>wont tune below a 3 to 1 if the match is extremely high.
>How else would i be able to tune a 20 metre inverted V half wave to work on
>75/80 meters?
>I am sure on 3.7 MHZ the natural match has to be greater then 3 to 1...and
>the 570 is using the relay type tuning.
>Again, correct me if i am wrong, that is just the way i understood it from
>the manual.
>
>73
>Colin, V A6BKX
>
>----- Original Message -----
>From: "Steve Dresser" <[log in to unmask]>
>To: <[log in to unmask]>
>Sent: Friday, August 05, 2005 8:43 AM
>Subject: Re: Ts 480 and power supply
>
>
> > Colin,
> >
> > The 480 manual says that you'll have trouble if your SWR is greater
> > than 10 to 1.  I don't know for certain, but I suspect most internal
> > tuners have less tolleranc3e for high SWR than some of the older
> > external tuners because they don't use tuning capacitors.  That's how
> > they can be crammed into such small radios.  Those tuning capacitors
> > take up lots of space, especially if you want them to handle higher power.
> >
> > Steve
> >
> > On Friday 8/5/05 00:40 Colin McDonald wrote:
> > >kenwood tuners in general? as in the internal auto tuners?
> > >that cant be right, unless that just applies to the TS480...i tune up
>with
> > >no less then a 6 to 1 match quite regularly...perhaps not wizely, but i
>do
> > >it to get out.
> > >73
> > >Colin, V A6BKX
> > >----- Original Message -----
> > >From: "Anthony Vece" <[log in to unmask]>
> > >To: <[log in to unmask]>
> > >Sent: Thursday, August 04, 2005 8:58 PM
> > >Subject: Re: Ts 480 and power supply
> > >
> > >
> > > > Hi Steve;
> > > >
> > > > I understand from KENWOOD themselves that there tuners are not made
> > > > to tune anything above 1.3/1 match.
> > > >
> > > > 73 De Anthony w2ajv
> > > > [log in to unmask]
> > > >
> > > > On 2 Aug 2005, at 10:41, Steve Dresser wrote:
> > > >
> > > > > Butch,
> > > > >
> > > > > To me, the 200-watt unit makes sense only if you run it mobile all
> > > > > the time.  I had the same thoughts about the tuner, although I
>almost
> > > > > never use it because I've found that my Icom ATS500 works much
>better
> > > > > than the 480's internal tuner.  In fact, there are some bands where
>I
> > > > > can't even tune up with the internal tuner, but the external tuner
> > > > > brings the SWR right down to 1/1.
> > > > >
> > > > > Steve
> > > > >
> > > > > On Monday 8/1/05 18:53 Butch Bussen wrote:
> > > > >
> > > > >> Speaking of the 480.  If the voltage between both pulgs isn't
> > > > >> within a
> > > > >> very small ammount, the rig won't transmit.  Personally, I can't
> > > > >> see the
> > > > >> 200 watt version, you're talking an increase of 3 db or a half an
> > > > >> s unit.
> > > > >> I'd much rather have the tuner.
> > > > >> 73s
> > > > >> Butch Bussen
> > > > >> wa0vjr
> > > > >
> > > >
> >

Louis Kim Kline
A.R.S. K2LKK
Home e-mail:  [log in to unmask]
Work e-mail:  [log in to unmask]
Work Telephone:  (585) 697-5753