[Elecraft] KPA500 feature suggestion - band bypass

[Eric Swartz - WA6HHQ, Elecraft]

Hi Ian,

Jack is incorrect. It is not as critical as he implied. I operate often 
into high SWRs with my K3/KAT3 running through  the amp in bypass mode. 
I'll discuss this with the team here and get back to the list with any 
bypass mode operating limits.

73, Eric

On 4/6/2011 1:55 PM, iain macdonnell - N6ML wrote:
> Well that sounds very disappointing ... can we gets specs on the
> maximum reflected power that this sensor circuitry can safely handle ?
>
>      ~iain / N6ML
>
>
> On Wed, Apr 6, 2011 at 8:33 PM, Jack Brindle<jackbrindle at me.com>  wrote:
>> Think twice before you do this. Subjecting the KPA500 to very high SWR
>> between the transceiver and the antenna (with KPA500 in between, even if at
>> standby) might damage the KPA500 circuitry. The ATU belongs _after_ the
>> KPA500, not before it.
>>
>> Even though the amplifier section is bypassed, there is still sensor
>> circuitry active in the front end of the KPA500 that may be damaged from
>> high power and SWR.
>>
>> If you are going to do something like this, be sure to built a relay box
>> that bypasses the KPA500 to protect it.
>>
>> Jack Brindle, W6FB
>>
>>
>> On Apr 6, 2011, at 11:53 AM, iain macdonnell - N6ML wrote:
>>
>>> A feature suggestion ... may not be the best time for it, but incase
>>> it could be worked into the dev-cycle somehow....
>>>
>>> I'd like to be able to configure the KPA500 to automatically put
>>> itself in standby on certain bands, and active on others...
>>> configuration would look like the K3's band-map.
>>>
>>> The reason... in my remote setup, I have resonant antennas on some
>>> bands, and currently use a KAT3 to make other bands (mostly WARC)
>>> work. I'd like to be able to use the KPA500 on the "main" bands, but
>>> still use KAT3 on the others... without having to remember to place
>>> the KPA500 in standby..... at least until the KAT500 is ready :)
>>>
>>>    ~iain / N6ML
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