[Elecraft] Why is my K3 off frequency?

KENT TRIMBLE k9ztv at socket.net
Wed Mar 24 12:45:53 EDT 2021


The quickest and easiest method for zero-beating the NCS on an SSB net 
is just what Andy described . . . tune for the most natural sounding 
voice.  I suppose someone with lab instruments and scopes might come up 
with something more sophisticated  But, as others have pointed out, 
sophistication is seldom needed in general Amateur use.  There is only 
one station in a net that all stations need to zero-beat and that is the 
NCS.

The NCS doesn't care about stations off-frequency.  It is not his job to 
tune for anybody.  He stays put.  It's the responsibility of stations 
who are checking into the net to find and zero-beat the NCS, not the 
other way around.  In fact, a good NCS will lock his main VFO so he 
doesn't accidentally bump it.  If he needs to fine-tune someone, he uses 
his clarifier/RIT.

The same holds true for all stations in the net (or round table).  They 
should use their main (transmitter) VFOs to zero the NCS, lock it, and 
then use their clarifier (RIT) knob to tune incoming signals as 
desired.  Of course, SPLIT could also be used to accomplish the same 
thing as long as the transmitting VFO is zeroed to the NCS and locked 
and the operator doesn't get confused as to which VFO is doing what.

But again, I can't emphasize enough that the NCS chooses a frequency of 
his choice nearest the published frequency in order to establish as 
clear a spot as possible and all others zero-beat him.  This protocol 
has been in practice in National Traffic System work since the advent of 
variable frequency oscillators.

73,

Kent  K9ZTV

>> On Mar 24, 2021, at 9:56 AM, Wes <wes_n7ws at triconet.org> wrote:
>>
>> And how does a NCS know check-ins are off frequency, especially if it's a YL?
>>
>> Wes  N7WS
>>
>> On 3/24/2021 8:24 AM, Andy Durbin wrote:
>>> "Calibration aside, stations checking into nets should always zero-beat the Net Control Station regardless of where he is on the dial and regardless of the net's published frequency."
>>>
>>> O.k. I'll bite.   I started in amateur radio long enough ago to know how to use a BFO and to know how to zero beat an AM or CW signal.  How does one zero beat a suppressed carrier single sideband phone signal?  I just tune until the voice sounds like I think the voice should sound like.  It is very subjective and I certainly can't tune to less than 12 Hz error.
>>>
>>> What technique are others using that enables them to "zero beat" SSB phone to better than 12 Hz accuracy?  I seldom use phone but I'd like to have this technique in my bag of tricks.
>>>
>>> 73,
>>> Andy, k3wyc
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