Debby and all, the keybounce was quite common in a group of, but not
all, of the 440S.  there was also a problem with bad compound in some
of them.  Kenwood did repairs on many of the rigs, and there are
several Kenwood repair persons who can still do the repairs.  I've
owned and successfully used several of the 440SATS over the years, and
to me at least, they're ___Still one of ___The Best, Most Accessible,
and most comfortable rigs to operate and listen to, whether the
operator is blind or sighted.
If you wish, I'll go back through my slightly "packratted" email, and
get you a name, address, and phone number of a good Kenwood Tec/I'm
not_ on any kind of retainer and have no financial connection with any
repair shop.
HTH, Danny Dyer, Wb4idu.

On 6/15/13, Lou Kolb <[log in to unmask]> wrote:
> Mine did it too, Debee.  Not reliably, though so I imagine it's a problem of
>
> pad key wear.  Great rig, though.
> ----- Original Message -----
> From: "Deborah Armstrong" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Saturday, June 15, 2013 6:44 PM
> Subject: Kenwood TS-440 question
>
>
>> Kelvin asked me to do an accessibility review of the TS-440.
>>
>> I've used mine on and off for several years, and am using mine a lot this
>> week.
>>
>> But, I purchased the thing used, and it has a problem that I'm not sure
>> is
>> common to them all or specific to my unit. Don't want to mention it in my
>> review if it's just a problem with my rig.
>>
>> When I enter a frequency or a memory location, using the mode keys which
>> double for this function, the keys "bounce". Bouncing is a firmware
>> programmer's term for the problem but I'm not sure what the layperson's
>> term
>> is. Typematic, perhaps.
>>
>> Basically, if you touch a key, it sometimes repeats, so touching five
>> enters
>> three fives instead of a single five.
>>
>> I have to be very careful to not hold a key down even for the tiniest
>> fraction or it will repeat.
>>
>> Because this rig was one of the first with a Microprocessor -- I believe
>> it
>> was a Z80, they probably didn't do much in its firmware to avoid key
>> bounce.
>> But then again, it could be a hardware problem -- sticky keys. I don't
>> have
>> the famous Dot problem, but I've been careful to keep it in dry
>> locations.
>>
>> Anyway, if this bounce annoyance is common to the TS-440 I'd like to
>> mention
>> it as an access issue, but maybe my swap meet special is the only rig
>> with
>> this glitch.
>>
>> --Debee [KF6BKR]
>>
>