[AMRadio] RF Ammeters (Was AM Bandwidth)

[W2XJ]

That is one explanation but negative carrier shift can be a sagging 
power supply, weak tubes or mistuning, among other things.

On 6/21/11 9:03 PM, Kim Elmore wrote:
> I'd think that it should by indicating a current increase greater (or
> less for negative shift) than that expected under 100% modulation. By
> definition, an asymmetric audio source (positive peaks larger than
> negative peaks or vice versa) is not stationary and so results in an
> average DC offset. This would produce carrier shift, wouldn't it?
>
> Kim N5OP
>
> At 07:48 PM 6/21/2011, you wrote:
>> Dennis,
>>
>> Interesting meter and I wish I could afford one.  The thing that struck
>> me when reading the specifications was that it will show Carrier Shift.
>>
>> I can't help but wonder how many of us know what Carrier Shift is or how
>> to cure it if you have it?  Is there another method to know if you have
>> Carrier Shift?
>>
>>
>>
>> Jim/W5JO
>>
>>
>> ----- Original Message -----
>>
>>> If one wants to use an ammeter in your transmission line for power
>>> measurement, try getting your hands on a toroidal sampler meter such
>>> as made
>>> by Delta Electronics.  They are very accurate (some have an expanded
>>> scale)
>>> and you can get an easily repeatable reading.
>>>
>>> Used ones show up in the clutches of those taking engineering care of
>>> AM BC
>>> stations.
>>>
>>> 73DG
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