[Yaesu] ft 2000 and Alpha 8410

[Dr. Gerald N. Johnson]

Wasn't me that had the problem. I don't have either the FT-2000 or the 
amplifier. It was w3bj at juno.com that did.

On 5/18/2011 10:24 PM, George Anestis - W3ANX wrote:
>   Jerry,
>
> I tried to reply to the Yaesu list, but I don't think it worked so I'm
> replying directly.
>
> I had that same problem with my FT-1000mp and an Alpha 89. It was a
> problem in the FT-1000mp that Yaesu eventually fixed, (if you wanted to
> ship your rig to the West Coast to get it done) but a better fix was the
> upgrade to the FT-2000. I now have the FT-2000 and it works fine with
> the Alpha 89, so I'm not sure why yours is exhibiting the old problem. I
> know this isn't much help, but I wanted to let you know that my FT-2000
> does NOT do that...it works just fine on all modes with the Alpha 89.
> When I set the power output on the FT-2000 to about 35 watts, it
> maintains that level on all modes and the amp is happy and puts out 1500
> watts...no fault conditions.
>
> 73 - George - W3ANX
>
> On 5/18/2011 9:43 PM, Dr. Gerald N. Johnson wrote:
>> That's a standard problem running with transverters too. I don't know
>> any details about the FT-2000, but if it sets the power with ALC many
>> rigs spike. You can try cutting the power by backing off on the
>> transmitter gain, like the microphone gain. Minimize the work ALC has to
>> do. In my FT-857s I found an alignment menu setting for transmitter gain
>> that I was able to back off (and a global reset had set to the maximum
>> possible gain in one of them that spiked) and prevent spikes.
>>
>> Some for transverters have applied a fixed bias to the exciter ALC to
>> cut the power and prevent spikes.
>>
>> 73, Jerry, K0CQ
>>
>> On 5/18/2011 8:16 PM,w3bj at juno.com  wrote:
>>> Run an ft 2000 into Alpha 8410. When I tune it up in cw, it is fine. The minute I transmit audio it kicks t into fault. Drive is only 30 watts rf. Has anyone had this problem before. IT seems like the audio spikes and faults the amp.
>>>
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