[Elecraft] P3 Not Zeroed

[Alan Bloom]

You could be right.  I'm out of town right now so I can't check it.  But
I think I remember that in some of the digital modes the definition of
VFO A frequency is different. 

Alan N1AL 

On 2019-07-23 11:36, Joe Subich, W4TV wrote:

> On 2019-07-23 12:47 PM, Alan Bloom wrote: 
> 
>> Also be aware that the center frequency differs depending on mode.
> 
> The P3 *should be able to account for that* by using the FI get:
> 
>> FI * (I.F. Center Frequency; GET only)
>> RSP format: Finnnn; where nnnn represents the last 4 digits of the K3's present I.F. center frequency in Hz.  Example: If nnnn = 5000, the I.F. center frequency is 8215000 Hz.  Intended for use with panadapters, which need to keep track of the exact I.F. center frequency as filter bandwidths and shifts are changed by the
>> operator.
> 
> 73,
> 
> ... Joe, W4TV
> 
> On 2019-07-23 12:47 PM, Alan Bloom wrote: 
> 
>> Good advice.
>> 
>> Also be aware that the center frequency differs depending on mode.  For
>> example, it is the supressed carrier frequency on SSB but is offset by
>> typically 600 Hz on CW.
>> 
>> I like to use AM mode for frequeny calibration.  After doing a frequency
>> calibration on the K3, tune to a signal on the AM broadcast band and
>> adjust the P3 frequency calibration.  (MENU:RefCal.  Cal procedurre is
>> on page 39 of the manual)  As I recall, AM broadcast stations are
>> required to be within 20 Hz of nominal frequency but are typically much
>> closer than that.
>> 
>> Alan N1AL
> 
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