[Yaesu] Perplexing Problem...

[KB0NLY]

Nope, holding the up and down buttons doesn't turn on or off or otherwise 
change anything on this radio for some reason.

Ok, I should revise that...  The power is being switched off by a relay, so 
its not a slow decline, its off right then as I release the relay.

Scott KB0NLY


----- Original Message ----- 
From: <ma.locksmith at juno.com>
To: <kb0nly at mchsi.com>
Sent: Tuesday, October 13, 2009 4:27 PM
Subject: Re: [Yaesu] Perplexing Problem...


> Holding UP and DOWN upon turn on is supposed to turn OFF the expanded
> receive....
>
> But, did that restore the automatic split selection?
>
> I had a similar occurrence with an Azden.....  the micro senses the 12
> volts.....  and when there is a "sharp" drop, turns the micro into
> suspense mode.  If there's a slow decline....  because there's a big
> capacitor in the power supply, it does not do that.
>
> You can test this theory by disconnecting the wire at the power supply,
> rather than turning it off.  That should retain the memories.
>
> Ed
>
>
>
> On Tue, 13 Oct 2009 14:54:56 -0500 "KB0NLY" <kb0nly at mchsi.com> writes:
>> If anyone has been following along here i got a hold of a used
>> FT-2400H that needed a few repairs.  I got the memory battery
>> replaced and it now retains everything when shut off and
>> disconnected from power, i shut it off and shut off the power supply
>> to it yesterday morning and went back down this afternoon and turned
>> it all on and lo and behold it was holding its memory and bandsplit
>> info now.
>>
>> A quick note on the CPU jumpers and bandsplit, never did get that
>> working quite right.  It only works 144-148Mhz on both transmit and
>> receive, its supposed to cover 140-174 on receive, i tried the
>> procedure of holding both the up and down buttons and turning the
>> radio on, had to borrow a mic to do that, and it still stays at
>> 144-148, so oh well i can live with it.
>>
>> The problem is now very perplexing as to whats going on.  I was
>> planning on controlling power to the radio externally via a relay
>> for APRS, adding an ignition sensed and timed relay to it so i don't
>> have to remember to turn the radio on and off, but for some reason
>> this still blanks the radios memory.  Let me explain.
>>
>> Radio turned on, if you shut off the power source to the radio and
>> then turn it back on the radio looses all settings and memories.  It
>> doesn't seem to matter if its a quick off and on or a long off and
>> on, it just looses its memories unless you turn it off with the
>> power button on the radio.
>>
>> As i said, i already replaced the memory battery, checked its
>> voltage, and confirmed that the radio will hold its memory for more
>> than 24 hours without any power source connected, but shutting off
>> the supply voltage to it with the radio on seems to wipe all
>> memories.
>>
>> Any ideas??
>>
>> 73,
>>
>> Scott  KB0NLY
>>
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