[Elecraft] KPA1500 Power Level

[Bob McGraw]

Nope didn't miss your post and comments.   While I was not model 
specific, Yaesu is noted to be a key click generator due to overshoot 
and keying ramp timing.    Jim, K9YC also referenced this in his 
message.   {So it isn't just me!}  Maybe the 2 models you have are 
clean, but most Yaesu radios have issues of this type.   I have a friend 
and neighbor and club member that has 3 different Yaesu radios.  Two are 
FTdx3000 radios.    They all have it.  He's sent his to Yaesu for 
service.  They return it saying found nothing wrong.   I took one of his 
radios and measured the artifact with my spectrum analyzer.  I then sent 
the radio and the data from the spectrum analyzer to Yaesu.  There 
response was "oh, must be the way you measured it".   Sorry, but in my 
opinion, they are a bull shit company.   I would never use a Yaesu radio 
if it was provided to me free of charge.   They do have good receivers 
however.

73

Bob, K4TAX


On 9/21/2021 1:26 PM, Salvatore ["Ted"] K2QMF wrote:
> Bob,
> I guess you missed my post!!
> Yeasu Does NOT have the overshoot issue!!
> K2QMF
>
>> On 9/21/2021 2:14:12 PM, Bob McGraw <rmcgraw at benlomand.net> wrote:
>>
>> As to the attenuator, a 6 dB attenuator rated at 100 watts is no big
>> deal.  The challenge is to switch the attenuator in and out between TX
>> and RX modes.
>>
>> A better solution for all is to use a transceiver which DOES NOT have
>> the problem.  As Jim, K9YC indicated, many do and require either
>> operating system/firmware changes or in some cases, hardware changes.
>> I'm with him on this.
>>
>> I can attest to the fact, my K3S, my Tentec Omni VII and Tentec Eagle DO
>> NOT have the overshoot issue.  The issue can be resolved.
>>
>> ICOM, Kenwood, Yaesu.........are you listening?
>>
>> 73
>>
>> Bob, K4TAX
>>
>>
>>
>> Message: 8
>> Date: Mon, 20 Sep 2021 09:21:15 -0700
>> From: jerry
>> To: Bob McGraw
>> Cc:elecraft at mailman.qth.net
>> Subject: Re: [Elecraft] KPA1500 Power Level
>> Message-ID:<6f2e7001d988f150b7f0f39517b3db60 at tr2.com>
>> Content-Type: text/plain; charset=UTF-8; format=flowed
>>
>> 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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