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
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