[Elecraft] kpa1500?

Gary Gregory vk1zzgary at gmail.com
Sat Dec 13 10:29:00 EST 2014


Gee whizz

Just what the world needs...another dirty 13.8v...oops 12vdc mobile amp.

Why do folks need to run so much power mobile?...oh yeah, i forgot....silly
me.

Gary
Vk1ZZ
K3, KX3, KPA500-FT, KAT500-FT,P3.
On 14/12/2014 1:02 AM, "Joe Subich, W4TV" <lists at subich.com> wrote:

>
>
> On 2014-12-13 9:31 AM, Dan Baker wrote:
>
>> My feature request is for a 500 W mobile version of the KPA500.
>>
>
> That's difficult due to the 12V requirement.  To do it right using 12V
> capable transistors/FETS would take at least two and probably four
> amplifier boards similar to the KPA500 with associated splitters and
> combiners.  *Without tuner and power supply* would put the price
> somewhere north of the KPA-500 just because of all the controls, heat
> sinks, etc.  There is a reason that 12V capable transceivers do not
> run more than 100W output (typically 2 x 60W or 2 x 80W transistors
> in push-pull).
>
> 73,
>
>   ... Joe, W4TV
>
>
> On 2014-12-13 9:31 AM, Dan Baker wrote:
>
>> My feature request is for a 500 W mobile version of the KPA500. I think
>> the Mississippi company is the only one making a 500 watt mobile amp now.
>> Seems like there is an opportunity to be had. I would gladly donate my
>> ALS-500 to Wayne and Eric so they could see how not to build one.
>>
>> Dan KM6CQ
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