[Boatanchors] question on the SB-610

[Sandy]

It should definately should be placed bewteen the transmitter and the 
antenna tuner/coupler/transmatch.  (Preferably in a 50 ohm "circuit" devoid 
of any reactance.  If you have an amplifier of some sort, the  between the 
output of the amplifier and the antenna tuner/coupler/transmatch.

If you are using it on SSB,after a preliminary "barefoot" tuneup the two 
tone audio oscillator contained in the SB-610 will be of a great aid getting 
the amplifier tuning and coupling setup for maximum PEP power and LINEARITY 
using the trapezoidal pattern.  You will be able to see the distortion if 
things are setup incorrectly (like relying on full power "CW" tuneup which 
oft times isn't correct.)  You will see the effect of setting amplifier's 
controls properly to give you the cleanest sugnal possible and most power 
output at the same time.

73,

Sandy W5TV W
----- Original Message ----- 
From: <eugene at hertzmail.com>
To: <heathkit at mailman.qth.net>; "BOATANCHORS" <boatanchors at mailman.qth.net>
Sent: Sunday, January 18, 2009 8:19 PM
Subject: [Boatanchors] question on the SB-610


> Hi there.
>
> I am rearranging my shack (seems I spend more time rearranging than
> operating!).  I would like to use my SB-610 to monitor my signal.
>
> To simplify, I have a 1KW amp, then an antenna coupler and then the
> antenna. Would I be better off placing the SB-610 before the antenna
> coupler so that it sees close to 50 ohms on both its input and output?
>
> Or would I be better off placing it after the antenna coupler so that it
> can display my signal, which would reflect whatever the true SWR is
> going out to the antenna?
>
> Put another way, my signal will be going out into an antenna that will
> not really have a perfect match. In fact, it might have SWR of 2:1 or
> 3:1 or worse - even though my antenna coupler is making my amp see 1:1.
>
> I am wondering if this real SWR might have an effect on the quality of
> my transmitted signal? If so, perhaps I should use the SB-610 after the
> coupler to "see" what everyone else will be hearing?
>
> Or does the 610 just give a hoot about SWR?
>
> Thanks for the bandwidth!
> Eugene
>
>
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