you must use am, FM, cw or rtty when checking swr, otherwise you will not 
get any kind of accurate reading..somewhat more accurate with power, but 
again, same senario where you won't get proper values with voice modulation 
on ssb.
A whistle into the mike will give you a close power reading on SSB, but it 
can be very inaccurate there too if you don't whistle properly or if you 
have too much reflected power.
Also, the readings on swr, power and reflected power will all change 
slightly depending on weather you have the internal tuner enabled or not 
during the measurement.
I've seen up to a 2 unit difference on swr between tuner on, and tuner 
off...it shouldn't make much difference since the tuner is before the meter 
and not after it, but it must change the impedance enough to alter the 
reading slightly.
On the ts2000, your cw power output is the same as the SSB power output...so 
when you change the RF power output on cw or ssb, it'll change on both 
modes.
So, you can see what your max power output is by putting the rig in cw and 
keying the mike.
If your swr is more than about 1.5 to 1, you'll see a reading of above 100 
watts at full power...that's reflected power effecting the reading...as the 
swr gets worse, the meter becomes more and more inaccurate as well...with an 
SWR of say 3 to 1, you may see power output of 125 or 130W due to the 
inaccuracy of the meter with a high swr.
The stated accuracy from LDG is plus or minus 5 percent I think.
Perhaps that is point 5 per cent, but check the manual on 
ICanWorkThisThing.com.
Any meter, even good ones, are typically not perfectly accurate, and are 
designed to give you a general, fairly close idea of what's going on.

73
Colin, V A6BS
----- Original Message ----- 
From: "Justin Mann" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Saturday, January 14, 2012 1:54 PM
Subject: using a tw-1?


> Hi all,
> I've just gotten a tw-1, have it connected, and the thing is talking as it 
> should.  However, I'm quite startled of the inaccuracy of the readings 
> that i am getting.  Sometimes, I will see my antenna 250:1 etc.  This 
> doesn't make any sense at all.  Sometimes, I will see my power output at 
> 130 watts when my radio actually puts out only 100.  I'm using this with a 
> Kenwood ts2000.  Can you help?  I'm not expecting this to be as accurate 
> as a bird watt meter, but I would imagine it should be relatively 
> accurate.  Also just to clarify, you can just hit the forward, reverse, or 
> swr button while using an SSB transmission?
> Thanks much,
> Justin