yep, that is on by default set at 30 minutes.
it will automatically reset if you perform any functions on the radio other 
than volume adjustment.

the auto shut off is a nice feature when you do forget about the radio being 
on, however, with most repeaters, there is a 15 or 30 minute anouncement of 
the repeater call in voice or cw, so if you are monitoring an amateur 
repeater, it usually won't shut off.  Also, the TH F6A has another power 
saving feature which turns the receiver on only every 3 seconds by default 
to check for a signal...this can be set in the menus as well for different 
periods of time, or off completely.  That is why sometimes when listening to 
a frequency, you'll miss the first few seconds of a conversation or the 
beginning of a call sign or something.
as soon as there is no signal, the receiver starts shutting itself off for 3 
seconds at a time.
73
Colin, V A6BKX
----- Original Message ----- 
From: "Walt Sebastian" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Saturday, May 01, 2010 11:16 AM
Subject: ANOTHER THF6A QUESTION


> Hi Guys,
> There appears to be some kind of an alarm on the radio.  It does 4 double
> beeps.  It did it several times before I realized where it was coming 
> from.
> What is the purpose of it?  I don't ever remember hearing it in the past.
> 73
>
> Walt
> WA4QXT
> Groton CTs
> [log in to unmask]