Kev,
Glad it's working! I'm enough OCD that
after being a few Hz off every so often
and going through the ref cal procedure, I
bought the exref option and a BFG7TBL
GPSDO on fleabay. With this, the K3 & now
K3s is adjusted perfectly at all times and
the computer clock is dead on constantly.
Only to read the scale. Keyed from the rig.
It's working guys! As I mentioned, everything is lining up as expected.
This is why I went with Elecraft. Because of this group. Last group would
have been everything from RTFM to why would you want to do that...
73,
Kev N4TT
On Thu, Jul 25, 2019 at
Kev,
Do you have FlDigi set to produce audio tones in SSB mode for CW or is
it keying the K3 directly?
That will make a significant difference, and the P3 signal placement
will reflect that.
We did not consider that you were using a software application to
produce CW previously to this
Hi Don:
I'm still checking things out but I think I have it all working together. I
calibrated the radio using WWV at 5, 10 and 15 MHz. I only had to line up
one and the other two fell right in. Then I went to the P3 and lined that
up with ref cal. Again, everything lined up at 5, 10 and 15.
Re: choice of test signal for calibrating the P3
> I am not certain why Alan prefers using a BCB signal, but WWV is an AM signal
> with defined frequency and tone frequencies.
Two reasons. The main one is that the local AM station's signal doesn't
depend on propagation. It is always there,
Kev,
I believe that Alan's response, while correct is a bit confusing.
In CW mode, a signal at 7.035,000 kHz should be shown at 7.035,000 MHz.
OTOH, an SSB signal with a suppressed carrier frequency of 7.135,000 MHz
will show the suppressed carrier frequency as the center, but the
intelligence
Just checked my K3S and P3 using WWV 5.0 MHz and 15.0MHz. The error
indicated on the radio is 1 to 2 Hz low. The P3 is correct for both
frequencies with a Ref Cal value of -55 for both frequencies.
My K3S calibration method uses CW mode, with CWT active and press SPOT.
That will zero the
This may be too simplistic or doesn't
address the OP as well as it could but...
I do have an external 10M reference, a
GPSDO and use that to keep the K3s in
proper frequency adjustment. That said,
the instructions in the K3 or K3s manual
address how to zero beat a known frequency
source
I thought an oscilkator was one of those green lizards with lots of teeth
that live in the swamp
On Tue, Jul 23, 2019 at 4:25 PM Nr4c wrote:
> For CW, if radio is set to 7.040 then it will transmit a carrier on 7.040.
> If you tune to a station transmitting on 7.030 then your radio should
For CW, if radio is set to 7.040 then it will transmit a carrier on 7.040. If
you tune to a station transmitting on 7.030 then your radio should also be at
7.039 and the P3 would show a spike on 7.030. The pitch of the audio is done in
the receiver so you can make out the code. Otherwise you
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
Thanks all!
There's a ref cal on the K3s. I ran through the procedure for that using 15
MHz and rechecked on 10 MHz. Seems this was quite a bit off. Now, not only
is it lining up on WWV but also any CW signal I select lines up very
closely between the marker on the P3 and a 600 Hz marker on
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: Fi; where represents the last 4 digits of the
K3’s
Maybe that's the basic question...
If I tune the radio to 7.035 to set a CW signal for a pitch of 600 Hz (as
set using the PITCH function) what should I expect to see on the P3?
1) The P3 shows 7.035 and the CW signal is offset from the center by 600 Hz?
2) The P3 shows 7.035 and compensates
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
First make sure the radio is correct on all WWV frequencies. I use CW mode
and Auto Spot. That will get to within 2 Hz or better. Adjust the Ref freq to
calibrate.
Then you can calibrate the P3 to the radio.
No tuning or listening for zero beat required.
Bob, K4TAX
Sent from my iPhone
Hi Jim:
I thought I had the right adjustment on the P3 but it seems global. I can't
figure out why WWV can be spot on and then another signal off. I can't even
be sure if it is the radio or the P3 (or me) at this point. I'll keep
digging.
Kev
On Tue, Jul 23, 2019 at 3:57 AM Jim Brown wrote:
It's been a while since I looked at the manuals for my K3 and P3, but I
do recall that there are calibration procedures for both.
73, Jim K9YC
On 7/22/2019 9:28 PM, Kevin, N4TT wrote:
I noticed my P3 doesn't seem to be zeroed with the K3s. When I tune in a CW
signal with a 600 Hz pitch the P3
I noticed my P3 doesn't seem to be zeroed with the K3s. When I tune in a CW
signal with a 600 Hz pitch the P3 is off by 71 Hz. Not much but, I
expected - zero.
In AM - WWV at 5 MHz the P3 seems spot on.
73,
Kev N4TT
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