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K3 Receiver frequency adjustment

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K3 Receiver frequency adjustment

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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David Gilbert-2

Re: K3 Receiver frequency adjustment

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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Nr4c

Re: K3 Receiver frequency adjustment

In reply to this post by Elecraft mailing list

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 <[hidden email]> 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
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k6dgw

Re: K3 Receiver frequency adjustment

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 <[hidden email]> 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:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]
> ______________________________________________________________
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N4ZR

Re: K3 Receiver frequency adjustment

In reply to this post by David Gilbert-2

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 <https://sm7iun.se/rbnskew>.

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 <http://reversebeacon.net>, 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
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

Jim Brown-10

Re: K3 Receiver frequency adjustment

In reply to this post by Elecraft mailing list

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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