Re: [Elecraft] K3 Receiver frequency adjustment

[Jim Brown]

On 9/20/2020 12:04 PM, RVZ via Elecraft wrote:

I'm wondering what options are available for adjusting the K3 receiver 
frequency?


It's in the manual.

73, Jim K9YC
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Re: [Elecraft] K3 Receiver frequency adjustment

[N4ZR]

Amen, Dave.  After all, the "retail" DX cluster network rounds frequency 
to the nearest 0.1 KHz.  I think RVZ could do worse than to use WWV at 
10 or 15 MHz to verify his K3's calibration


And FWIW, a word or two from the RBN perspective - we have been working 
for several months to improve the frequency calibration of the RBN, by 
helping the stations that combine prolific spotting with less than ideal 
calibration.  SM7IUN has come up with a very neat tool for measuring the 
average accuracy of each active RBN node over each Zulu day, and posting 
the results nightly at .


The vast majority of prolific RBN nodes are already within 5 parts per 
million, which equates to only 0.07 KHz on 14 MHz.  The very "worst" 
ones are off by around 15 ppm, or a bit over 0.2 KHz on 20m, and I have 
been working with them, one by one, trying to bring their nodes closer 
to the standard.


For users of the Red Pitaya and QS1R receivers, as well as the other 
receivers directly supported by VE3NEA's Skimmer Servers, correcting 
calibration is a simple matter, and we've seen some good results, with 
others forthcoming soon, I hope.


73, Pete N4ZR
Check out the Reverse Beacon Network
at , now
spotting RTTY activity worldwide.
For spots, please use your favorite
"retail" DX cluster.

On 9/20/2020 3:08 PM, David Gilbert wrote:


Why don't you check an actual known frequency???  Relying on packet 
spots for anything seems foolish to me.


Dave   AB7E


On 9/20/2020 12:04 PM, RVZ via Elecraft wrote:

Hi Guys,

My K3 receiver is a little off frequency compared to the frequency 
stations are spotted at.  I realize that Packet Spots aren't always 
posted on frequency, but after viewing thousands of Spots which were 
posted by dozens of different sources, on average the actual 
frequency the station is received at averages 0.2 khz higher on the 
band then where it was spotted.  I'm wondering what options are 
available for adjusting the K3 receiver frequency?  Is there a 
receiver frequency adjustment within the K3 Utility? Thanks & 
73, Dick- K9OM


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Re: [Elecraft] K3 Receiver frequency adjustment

[Fred Jensen]

All good advice BUT ... before you do anything, look up Wayne's RefCal 
procedure on the Elecraft site. I think Don, W3FPR, may also have it.  
It's not hard, you just have to go slowly and be very meticulous at each 
step.  I have my K3 #642 within 1 Hz of WWV, and it stays there.  It's a 
fun adjustment too because there are very few things we can adjust to 
within 1 part per 10 million and no test equipment. [:=)


73,

Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

On 9/20/2020 12:13 PM, Nr4c wrote:

Look in the manual for Ref Cal calibration. But before you go Messing there, 
tune radio to WWV on 10.000, 15.000 or 20.000 MHz and see if it’s really you or 
the other guy that’s off.
Now check for procedure.  The zero beat works well and can get you within a 
Hertz or two

Sent from my iPhone
...nr4c. bill



On Sep 20, 2020, at 3:06 PM, RVZ via Elecraft  wrote:

Hi Guys,

My K3 receiver is a little off frequency compared to the frequency stations are 
spotted at.  I realize that Packet Spots aren't always posted on frequency, but 
after viewing thousands of Spots which were posted by dozens of different sources, 
on average the actual frequency the station is received at averages 0.2 khz higher 
on the band then where it was spotted.  I'm wondering what options are available 
for adjusting the K3 receiver frequency?  Is there a receiver frequency adjustment 
within the K3 Utility? Thanks & 73, Dick- K9OM
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Re: [Elecraft] K3 Receiver frequency adjustment

[Nr4c]

Look in the manual for Ref Cal calibration. But before you go Messing there, 
tune radio to WWV on 10.000, 15.000 or 20.000 MHz and see if it’s really you or 
the other guy that’s off. 
Now check for procedure.  The zero beat works well and can get you within a 
Hertz or two 

Sent from my iPhone
...nr4c. bill


> On Sep 20, 2020, at 3:06 PM, RVZ via Elecraft  
> wrote:
> 
> Hi Guys,
> 
> My K3 receiver is a little off frequency compared to the frequency stations 
> are spotted at.  I realize that Packet Spots aren't always posted on 
> frequency, but after viewing thousands of Spots which were posted by dozens 
> of different sources, on average the actual frequency the station is received 
> at averages 0.2 khz higher on the band then where it was spotted.  I'm 
> wondering what options are available for adjusting the K3 receiver frequency? 
>  Is there a receiver frequency adjustment within the K3 Utility? Thanks & 73, 
> Dick- K9OM
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to n...@widomaker.com
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Re: [Elecraft] K3 Receiver frequency adjustment

[David Gilbert]

Why don't you check an actual known frequency???  Relying on packet 
spots for anything seems foolish to me.


Dave   AB7E


On 9/20/2020 12:04 PM, RVZ via Elecraft wrote:

Hi Guys,

My K3 receiver is a little off frequency compared to the frequency stations are 
spotted at.  I realize that Packet Spots aren't always posted on frequency, but 
after viewing thousands of Spots which were posted by dozens of different sources, 
on average the actual frequency the station is received at averages 0.2 khz higher 
on the band then where it was spotted.  I'm wondering what options are available 
for adjusting the K3 receiver frequency?  Is there a receiver frequency adjustment 
within the K3 Utility? Thanks & 73, Dick- K9OM


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