[CQ-Contest] New Amps: Elecraft KPA1500 & FlexRadio/4O3A PGXL

john at kk9a.com john at kk9a.com
Tue Apr 25 10:24:33 EDT 2017


I have only connected a relay wire and coax to the Acom 2000A however I
believe that CAT control is possible for a single radio.  Connecting two
radios and having the amp tune to the TX radio would probably involve a
homebrew switching device and a lot of wear and tear on the amp. 

John KK9A 

On 2017-04-25 10:09, Ria Jairam wrote:

> Does it have the ability to adjust itself via CAT? That is recommended for solid state amps, especially in SO2R configuration.  
> 
> N2RJ 
> 
> On Mon, Apr 24, 2017 at 8:08 PM, <john at kk9a.com> wrote:
> 
>> The Acom 2000a needs a brief dit to adjust itself. This is a fantastic
>> amplifier and it adjusts very quickly however I would not operate SO2R
>> alternating CQs between two radios with just a single 2000a.
>> 
>> John KK9A
>> 
>> To:     cq-contest <cq-contest at contesting.com>
>> Subject:        Re: [CQ-Contest] New Amps: Elecraft KPA1500 & FlexRadio/4O3A
>> PGXL
>> From:   Rudy Bakalov via CQ-Contest <cq-contest at contesting.com>
>> Date:   Mon, 24 Apr 2017 07:33:52 -0400
>> 
>> Can auto tune amps tune fast enough between band A and B? My experience with
>> 
>> Acom 2000 is that while auto tuning is fast, it is not fast enough to be
>> alternating CQ on two different bands.
>> 
>> On the other hand, solid state amps use banks of low pass filters on the
>> output, allowing them to switch bands as rapidly as the relays can switch; I
>> 
>> can imagine running on two bands with this arrangement.
>> 
>> Rudy N2WQ
>> 
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