[Elecraft] KPA1500 Power Level

[Bob McGraw]

And how did you come to the conclusion of no overshoot?

73

Bob, K4TAX


On 9/21/2021 8:48 AM, Salvatore ["Ted"] K2QMF wrote:
> I have a Yeasu FTdx5000 and an FTdx101MP.
> Both are driving Elecraft KPA1500's.
> The driver power is reduced to about 35 Watts on both!  I have no over 
> shoot with either rig!
> Do not use ALC!!  Lower the drive power.
> No issues!  Works Great...
> K2QMF
>>
>> On 9/21/2021 9:38:49 AM, jerry <jerry at tr2.com> wrote:
>>
>> On 2021-09-21 06:26, Bob McGraw wrote:
>> > Not really, 6 dB of attenuation rated at 100 watts. The challenge is
>> > switching it out on receive.
>>
>> *** Not so bad if you build it INTO the linear - so it would be inside
>> the
>> existing relays. But yeah - it's a shame to waste all that power and
>> heat the linear
>> more.
>>
>> - Jerry KF6VB
>>
>>
>>
>> >
>> > But the real challenge is to buy a transceiver that doesn't overshoot
>> > at reduced power.  Neither my K3S, my Tentec Eagle, nor my Omni VII
>> > have the issue.    Other companies have or need to update their
>> > operating system such that reduced power does not overshoot.
>> >
>> > Kenwood, ICOM, and Yaesu.......are you listening?
>> >
>> > 73
>> >
>> > Bob, K4TAX
>> >
>> >
>> > On 9/20/2021 11:21 AM, jerry wrote:
>> >> On 2021-09-19 19:47, Bob McGraw wrote:
>> >>> Based on personal experience and observations with another ham radio
>> >>> brand and company, it is most often the case that power overshoot is
>> >>> likely to occur when the transceiver is operated at reduced power.
>> >>> Namely to drive a power amplifier.
>> >>
>> >> *** So I guess the obvious fix is to operate the exciter at full 
>> power
>> >> and
>> >> insert an attenuator in line.  It would be serious piece of equipment
>> >> though.
>> >>
>> >>                    - Jerry KF6VB
>> >>
>> >>
>> >>
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