Mike, I understand what you are saying, and you are correct, except you
missed my point concerning why I want to be able to read the SWR between my
TS-590 and the antenna tuner. The tuner does a good job matching impedance
between the feedline and my rig. However, with a little tweaking the
fine-tuning using the capacitance and inductance up and down buttons on the
tuner, I can achieve an even more perfect match. The only way I can do this
on my own is if I know what the SWR is that my TS590 is seeing. 

Ron, K8HSY

-----Original Message-----
From: For blind ham radio operators [mailto:[log in to unmask]]
On Behalf Of Steve Forst
Sent: Monday, September 08, 2014 9:31 AM
To: [log in to unmask]
Subject: Re: SWR announcing with the TS-590

Mike,


What it is announcing is what the radio is seeing.  If I have an antenna
with a 3:1 SWR connected to the auto tuner, but the tuner is not active, the
radio will  announce a 3:1 SWR as it looks "through" the tuner to 
the antenna.   If I activate the tuner and bring it down to 1.0:1,  the 
radio will say that it is 1.0.

Of course the antenna hasn't changed, but the radio is happy looking at the
flat swr it sees at the tuner, and I guess that is the whole reason for  the
tuner in the first place.

I think input to the amp is a different issue.  Knowing what the radio is
seeing can be important since that is what determines  when and how much the
radio may fold back to protect itself.

I do have both a TW-1 and a Wavenode unit in line after the amp.  Belt and
suspenders I guess.

73, Steve KW3A


On 9/8/2014 9:43 AM, Michael Ryan wrote:
> I would b careful with the TS-590's SWR announcing capability.=20 I 
> would suspect that it would only apply if you had an antenna directly 
> = connected to 1 of its SO-239 antenna jacks.=20 Using an external 
> antenna tuner, you would only be getting the SWR = between the rig and 
> tuner, which should be no more than 1.5/1 or flat = and if not, I 
> would think there might be something wrong. Between my rig = and amp, 
> my TW-1 reports an SWR of 1.3/1 and 1.0/1 between the rig and =
> tuner.=20
> The 570 reports 1.5/1 with both units. To get an accurate measure, I'd 
> = use an external talking meter between the ATU and antenna and just = 
> forget about the 590'S SWR announcing unless an antenna was directly =
> connected.=20
>
> 73:=20
> Mike VO1AX=20
>
>
>