Colin:
Thanks for the great explanations and confirming information.
Your patience is most appreciated here as I learn the new rig.
73 from Tom Behler: KB8TYJ
----- Original Message -----
From: "Colin McDonald" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, December 25, 2007 3:47 PM
Subject: Re: TS480 update and some questions
> well, if you turn the AAT off, then you'll have no more AAT, it would be,
> turned off...
> Its sort of like the power button on the radio, if you turn the radio off,
> the radio doesn't work anymore, if you turn it on, poof it works
> again...same thing with the internal AAT.
> That is why the manual refers to it as the AAT bipass function.
>
> The relays click as you go through the different band segments...usually
> it'll click when you go from the CW portion to the phone portion of a
> band.
> Absolutely nothing wrong with that, and it is in fact designed to do that.
>
> As for the headphone/external speaker jacks, well, a headphone output is
> designed for a 32 ohm load, and generally has an attenuator, in the form
> of
> a resister, to prevent ear damage.
> The external speaker jack is rated at 8ohms and doesn't have any
> attenuator,
> so you will get full volume, or at least, very similar volume levels from
> the external speaker as from the internal one.
>
> Just a note on the headphone jack. someone mentioned that it is a stereo
> jack and that putting a mono plug in would cause a short, and perhaps a
> volume loss...in reality, i believe the headphone output is likely a split
> mono signal, and it is designed to short the right side to ground and send
> the signal out the left side if a mono jack is inserted.
> Most audio devices with stereo, or split mono out puts are designed like
> this in the eventuality of a mono plug being put in.
> Even computer sound cards that have 3.5VDC going to the ring of the
> microphone plug will just short to ground if a mono plug is inserted by
> accident...
> They probably just use some sort of bleed resistor and a small heat sink
> to
> accomplish this.
> 73
> Colin, V A6BKX
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