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<p>Here are my results from testing the LMS8001a Companion Board as
a 5.6 GHz to 755 MHz down converter. I'm using an indirect method
to evaluate phase noise by using a 64QAM CATV demodulator. The
setup is Ettus B210 -> down converter -> 64QAM demodulator.
All tests were done with an external 5 volt power supply as
recommended by Lime.<br>
</p>
<p>Here's the LMS8001a.</p>
<img moz-do-not-send="false"
src="cid:part1.209CCC05.6B7ABA66@comcast.net" alt="lms8001 phase
noise" width="542" height="542"><br>
<br>
<br>
Here's the Kuhne 5.6 GHz down converter.<br>
<br>
<a class="moz-txt-link-freetext" href="https://www.kuhne-electronic.de/funk/en/shop/industrial/prof-converter/prof-low-noise-conve/KU+LNC+5659+C+PRO++Down+Converter/?card=403">https://www.kuhne-electronic.de/funk/en/shop/industrial/prof-converter/prof-low-noise-conve/KU+LNC+5659+C+PRO++Down+Converter/?card=403</a><br>
<br>
<img moz-do-not-send="false"
src="cid:part2.0307C635.FDFF57AB@comcast.net" alt="Kuhne phase
noise" width="542" height="542"><br>
<br>
Very similar. I'd have to say the LMS8001 is doing a pretty good
job. Unfortunately, I can't tell how much phase noise is from the
B210 and how much is from the down converter.<br>
<br>
There are a lot of spurs though. Here's with the 64QAM signal at 755
MHz.<br>
<br>
<img moz-do-not-send="false"
src="cid:part3.55BF3D26.7EC4A97E@comcast.net" alt="spurs with
signal" width="800" height="480"><br>
<br>
And without the 64QAM signal. No change.<br>
<br>
<img moz-do-not-send="false"
src="cid:part4.94A5DE98.8CA1353C@comcast.net" alt="without signal"
width="800" height="480"><br>
<br>
Zoomed in. Looks like there's a spur every 20 MHz. The reference
clock is 40 MHz.<br>
<br>
<img moz-do-not-send="false"
src="cid:part5.FB51CACE.38AC5222@comcast.net" alt="zoomed"
width="800" height="480"><br>
<br>
Ron W6RZ<br>
<br>
<div class="moz-cite-prefix">On 04/28/2018 01:09 PM, Michelle
Thompson via Ground-Station wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CACvjz2Vy-0LLwDELKzKOGkTVAkcm01o=gkj3A255+MXcERqeOw@mail.gmail.com">
<div dir="ltr"><span
style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">Hi
Mike,</span><br
style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial">
<br
style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial">
<span
style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">Were
you able to get the measurements you were after last weekend? </span><br
style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial">
<br
style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial">
<span
style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">Waiting
on u.FL cables to arrive in the mail today.</span><br>
<div class="gmail_extra"><br clear="all">
<div>
<div class="gmail_signature"
data-smartmail="gmail_signature">
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div dir="ltr">-Michelle W5NYV<br>
<br>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="gmail_quote">On Mon, Apr 9, 2018 at 3:44 AM, Mike
Seguin via Ground-Station <span dir="ltr"><<a
href="mailto:ground-station@lists.openresearch.institute"
target="_blank" moz-do-not-send="true">ground-station@lists.openresearch.institute</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">Correction
to LO leakage on 5 GHz. -53 dBc but I measured -47 dBm not
-53 dBm.<br>
<br>
Next tests are NF and play with the GPI for selecting
different LO's and channel configs.<br>
<br>
I have a GPIO board for my Lime and it works and is
supported in LimeSDR#. Also, Simon (SDRConsole) has
indicated he will support GPIO as well.<br>
<br>
Here's what LimeSDR# supports.<br>
------------------------------<wbr>------------------------------<wbr>--<br>
- J12 connector GPIO<br>
------------------------------<wbr>------------------------------<wbr>--<br>
- Outputs: 0-3 BPF (4 bits), 4-PTT (MOX)<br>
- Inputs: 5-PTT microphone, 6-keyer DASH, 7-keyer DOT<br>
<br>
LimeSDR# is based on PowerSDR and is at beta 0.5 now.<span
class="HOEnZb"><font color="#888888"><br>
<br>
Mike</font></span>
<div class="HOEnZb">
<div class="h5"><br>
<br>
On 4/8/2018 6:54 PM, Mike Seguin via Ground-Station
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi Ron,<br>
<br>
Did some basic transmit tests today.<br>
<br>
LMS8001a Companion Board<br>
4/8/2018<br>
<br>
10 GHz transmit section. CHA<br>
IF set at 1.298 GHz max +9 dBm<br>
LO set to 9.070<br>
<br>
10.368 -7 dBm<br>
LO @ -47 dBc (measured -54 dBm)<br>
<br>
5 GHz transmit section. CHD<br>
IF set at 1.350 GHz max +9 dBm<br>
LO set to 4.5 GHz<br>
<br>
5.850 +6 dBm<br>
LO @ -53 dBc (measured -53 dBm)<br>
<br>
=== output in the 9-10 GHz range where the board is
tuned ===<br>
9.0 GHz +1 dBm<br>
9.3 GHz -2 dBm<br>
9.7 GHz -6 dBm<br>
10 GHz -7 dBm<br>
<br>
Board is set up for:<br>
IF 1-3 GHz<br>
Up/Dwn conversions 5-6 GHz & 9-10 GHz<br>
<br>
Mike<br>
<br>
<br>
On 4/8/2018 2:46 PM, Ron Economos via Ground-Station
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
I have one. I'll be doing some phase noise testing
with 5.6 GHz down conversion soon.<br>
<br>
Ron W6RZ<br>
<br>
On 04/08/2018 03:57 AM, Mike Seguin via
Ground-Station wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0
0 .8ex;border-left:1px #ccc
solid;padding-left:1ex">
Anyone on the list working with the Lime
LMS8001a Companion Board? Mine finally arrived
and I'm starting to work with it. So far 10 GHz
TX/RX is working (10.368 GHz). 10 MHz lock works
well.<br>
<br>
Next is to try 5 GHz.<br>
<br>
At this point, no real measurements - just
seeing signals going in/out and learning the
setup.<br>
<br>
After initial sectional tests, I want to set it
up as 5 GHz TX and 10 GHz receive.<br>
<br>
</blockquote>
<br>
</blockquote>
</blockquote>
</div>
</div>
</blockquote>
</div>
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