I have a Power Master and love it! I did not like the LP unit.
73
Jim W7RY
--------------------------------------------------
From: "Jim Barber" <audioguy@q.com>
Sent: Friday, March 02, 2012 8:36 PM
Cc: <amps@contesting.com>
Subject: Re: [Amps] Elecraft W2, nope
> I do some QSY'ing up and down the band going from this group to that
> one, and rather than switch off to the dummy load I'll sometimes tweak
> for the freq change on SSB or AM voice peaks as I transmit.
>
> There... I admitted it. ;-)
>
> 73,
> Jim N7CXI
>
> On 3/2/2012 8:03 PM, Al Kozakiewicz wrote:
>> I don't understand why you would want to use the peak reading function to
>> tune an amplifier. The time delay before decay just makes tuning harder
>> and doesn't really add any value.
>>
>> I also have an LP-100A and an antenna tuner that is rarely used. The
>> tuner has a wattmeter in it that I leave on instantaneous mode and use
>> that to tune the amp.
>>
>> If you're using a pecker or some other pulsing device (completely
>> unnecessary, IMO) an instantaneous reading meter will indicate a bit low,
>> but since you're tuning for a peak, it doesn't matter.
>>
>> Al
>> AB2ZY
>>
>> -----Original Message-----
>>> Date: Fri, 2 Mar 2012 19:07:57 -0800
>>> From: audioguy@q.com
>>> To: Amps@contesting.com
>>> Subject: [Amps] Elecraft W2, or other"best" meter for tweaking the
>>> beast(s)?
>>>
>>> Has anyone tried the Elecraft W2 bar-graph wattmeter for tweaking
>>> their legal-limit amp? I read somewhere that the peak-hold is
>>> something like a second. If so, probably too long to be useful for my
>>> purposes.
>>>
>>> I have a calibrated LP-100A, and while it's plenty "accurate" enough
>>> for most amateur use, the display doesn't update quickly enough for
>>> easy tuning in normal peak mode, and the peak hold is something like
>>> 10 seconds - again not useful for tuning an amp.
>>>
>>> So... I also have a Bird 43 with a peak-reading board, which actually
>>> works fine for bench use, but isn't great as a fixed-station device.
>>> The one I keep going back to is the old Heathkit HM-2140 with the
>>> op-amp peak circuit. The timing of the peak-hold circuit just seems to
>>> work for me for tuning amps, but the meter faces are relatively small
>>> and it's quite old now.
>>>
>>> Again - I'm not looking to start another accuracy debate. Ultimate
>>> accuracy really isn't the point - I can use the LP-100A at the end of
>>> the circuit for absolute readings. Ease of use, timing of the
>>> peak-reading circuit and other amenities for tuning amps are the
>>> criteria I'm using here.
>>>
>>> Thanks,
>>> Jim N7CXI
>>> _______________________________________________
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>>> Amps@contesting.com
>>> http://lists.contesting.com/mailman/listinfo/amps
>>
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