On 22 December 2016 at 20:54, Bill Byrom wrote:
> Read about the synthesizer design of that generator here:
>
> https://ia600407.us.archive.org/10/items/Hewlett-Packard_
> Journal_Vol._42_No._2_1991-04_Hewlett-Packard/Hewlett-
>
Hi
On a sweep generator with a magnet tuned YIG, supply ripple is a very common
issue ….
Bob
> On Dec 22, 2016, at 9:00 PM, n2lym wrote:
>
> Hi Bob,
>
> I don't have issues at 60, 120, or 180Hz in a 60Hz country. Even with a 500KV
> line a few thousand feet away. I can
I think case #1 tells you that the frequency step is not occurring on the
sweeper as both The source and receiver are locked to GPS and no trace of the
step effect is seen
I would be much more inclined to think that the transverter is encountering
some type of power supply related artifact.
Hi Bob,
I don't have issues at 60, 120, or 180Hz in a 60Hz country. Even with a
500KV line a few thousand feet away. I can hear the corona on the ham
bands at times.
Mike
On Thu, Dec 22, 2016 at 05:15 PM, Bob Camp wrote:
Hi
In a country with 50 Hz power lines, figuring out anything
Hi
In a country with 50 Hz power lines, figuring out anything at 50, 100 or 150 Hz
is going to be a bit exciting.
Bob
> On Dec 22, 2016, at 4:04 PM, n2lym wrote:
>
> Dave,
>
> Look at it with a narrow band SA and see if it's modulated by 100Hz.
>
> 73,
>
> Mike N2LYM
Read about the synthesizer design of that generator here:
https://ia600407.us.archive.org/10/items/Hewlett-Packard_Journal_Vol._42_No._2_1991-04_Hewlett-Packard/Hewlett-Packard_Journal_Vol._42_No._2_1991-04_Hewlett-Packard.pdf
Dave, looking at the graph you posted it appears to me that the
Dave,
Look at it with a narrow band SA and see if it's modulated by 100Hz.
73,
Mike N2LYM
On Thu, Dec 22, 2016 at 07:39 AM, Dr. David Kirkby (Kirkby Microwave
Ltd) wrote:
On 22 December 2016 at 03:17, paul swed
wrote:
Dave Congratulations on 10 Ghz SSB.
This was not a QSO at
Hi David:
Some time ago I built an automated mixer test system where I first attempted to use HP 8350B sweep generators as the
sources for the LO and RF inputs, but this failed to work because at the narrow bandwidth settings on the HP 8566
spectrum analyzer there was way too much phase noise,
On Thu, 22 Dec 2016 12:39:27 +, you wrote:
>But I find it a bit odd that HP would have a 1 Hz software option on this
>instrument, if the instrument jumped up/down 100 Hz.
>
>Now I don't yet have the 1 Hz option programmed in, and it might well
>change the behavior completely, but I'd still
On 22 December 2016 at 01:35, Brooke Clarke wrote:
> Hi David:
>
> Do you have a comb generator?
>
No.
Dave
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On 22 December 2016 at 03:51, Tom Knox wrote:
> If it is any help, the 836XXA/B series are all capable of 1Hz resolution
> but are locked at 1KHz unless you enter the license key for option 008. So
> it could be software/firmware related.
>
> Happy Merry;
>
> Thomas Knox
>
I
On 22 December 2016 at 03:17, paul swed wrote:
> Dave Congratulations on 10 Ghz SSB.
>
This was not a QSO at all. It was simply a one way transmission from a
signal generator at my end to a receiver at his end. No QSO was attempted.
> Now to your question. I will fully
Dr. David Kirkby (Kirkby Microwave Ltd) wrote:
snip ..
The radio ham that noticed this step change in frequency is well used to
listening on 10 GHz, and hearing beacons. So I think its reasonable to
assume that the problem is not his end, but my end.
Any thoughts, which do NOT include
com> on behalf of Dr. David Kirkby
(Kirkby Microwave Ltd) <drkir...@kirkbymicrowave.co.uk>
Sent: Wednesday, December 21, 2016 4:42 PM
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] Problem with HP 83623A 20 GHz sweep generator stepping
up/down 100 Hz when no
Dave Congratulations on 10 Ghz SSB.
Now to your question. I will fully believe you are seeing normal behavior
of the generators. Even if its dithering 100 Hz thats pretty amazing. Sweep
gens simply are not stable enough for narrow work like you are trying.
Now I am sure comments will prove me
Hi David:
Do you have a comb generator?
--
Have Fun,
Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
The lesser of evils is still evil.
Original Message
I run a test over the weekend with a fellow radio ham. I transmitted 100 mW
or so
Can you use the VNA as a receiver? And determine whether the 100Hz shift is
also seen on the VNA
> On Dec 21, 2016, at 7:31 PM, Dr. David Kirkby (Kirkby Microwave Ltd)
> wrote:
>
> On 21 December 2016 at 23:42, Dr. David Kirkby (Kirkby Microwave Ltd) <
>
I run a test over the weekend with a fellow radio ham. I transmitted 100 mW
or so at 10368.115 MHz from an HP 83623A 10 MHz to 20 GHz sweep generator
http://www.keysight.com/en/pd-101862%3Aepsg%3Apro-pn-83623A/synthesized-sweeper-10-mhz-to-20-ghz-high-power?cc=GB=eng
into a small horn
On 21 December 2016 at 23:42, Dr. David Kirkby (Kirkby Microwave Ltd) <
drkir...@kirkbymicrowave.co.uk> wrote:
> But one thing to possibly is
>
> * Set sweep generator to 10.368 GHz
> * Set sweep generator to 10.378 GHz, so there's a 10 MHz difference.
>
I mean set the VNA to 10.378 GHz, so
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