818 is the equivalent number for the dx390, 818CS for the dx392.

Meanwhile on the 440 or 803, Look for a very little hole/small enough to
insert a pencil lead, or styless, either on the back or front of that radio.
I agree with Mike Duke, /who's almost always right on everything he
says/quite a great repository of radio knowledge, and extreme helpfulness.
----- Original Message ----- 
From: "Mike Duke, K5XU" <
[log in to unmask]>
To: <
[log in to unmask]>
Sent: Thursday, August 27, 2009 8:21 PM
Subject: Re: dx440 question

>I can't help you with the reset command, but I'd be really surprised if
> there isn't one.
>
> I believe the Sanjean model for that radio is the 818, but I'm not
> absolutely sure.

----- Original Message ----- 
From: "Lou Kolb" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, August 27, 2009 8:48 PM
Subject: Re: dx440 question


> Danny and mike,  Thanks for the great suggestions.  No, I haven't tried it
> with just batteries yet but will do so.  It just happened this morning so
> haven't had time to poke around the net yet but started with you folks 
> first
> because this is a reliable and knowledgeable group.  Thanks.  Lou
> ----- Original Message ----- 
> From: "Danny Dyer" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Thursday, August 27, 2009 8:31 PM
> Subject: Re: dx440 question
>
>
>> Hi Lou, the Sangean equivalent radio is the ats803, and or the 803A, and
>> or
>> 803B./I've heard of all three.
>> In terms of a memory battery,  Since the memories are volatile/will
>> disappear when power is removed, or AA cells are removed, there's likely
>> not
>> any other battery supply for the radio's memories and clock, other than
>> the
>> AA cells.  Meanwhile, in terms of a reset button, I'm not sure, although 
>> I
>> never remember seeing/feeling one, and I've experienced several of the
>> units.
>> Have you checked icanworkthisthing.com for a manual?   that should answer
>> the reset button question---in fact you might find a manual at
>> radioshack.com or 1800theshack, although considering the age of the unit
>> that's a longshot.  *ANother longshot, Universal Radio may have some 
>> info,
>> as they do sell those units used, quite often.  Those old radios do sound
>> great, and usually work very well. Have you tried to bring the unit up
>> strictly with batteries?
>> HTH, Danny.
>>
>>
>> ----- Original Message ----- 
>> From: "Lou Kolb" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Thursday, August 27, 2009 7:44 PM
>> Subject: dx440 question
>>
>>
>>>I have an old Radio Shack dx-440 am/fm/sw receiver.  Apparently, it's 
>>>made
>>> by Sangean and they have their own model number for the same radio.
>>> Anyway,
>>> after nearly 20 years of faithful service as my bedside radio, it has
>>> stopped working.  Actually, that's not quite accurate.  It comes on when
>>> plugged in but none of the controls work.  Anyone know if there is a
>>> reset
>>> button on the thing.  Or maybe, if there is a lithium battery for the
>>> memory
>>> it has finally given out.  Guess I can't complain after nearly 20 years
>>> but
>>> I'm not willing to say goodbye to the thing just yet.  Thanks.  lou