[Ground-station] Lime LMS8001a Companion Board

[Mike Seguin]

Correction to LO leakage on 5 GHz. -53 dBc but I measured -47 dBm not 
-53 dBm.

Next tests are NF and play with the GPI for selecting different LO's and 
channel configs.

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.

Here's what LimeSDR# supports.
--------------------------------------------------------------
- J12 connector GPIO
--------------------------------------------------------------
- Outputs: 0-3 BPF (4 bits), 4-PTT (MOX)
- Inputs: 5-PTT microphone, 6-keyer DASH, 7-keyer DOT

LimeSDR# is based on PowerSDR and is at beta 0.5 now.

Mike

On 4/8/2018 6:54 PM, Mike Seguin via Ground-Station wrote:
> Hi Ron,
> 
> Did some basic transmit tests today.
> 
> LMS8001a Companion Board
> 4/8/2018
> 
> 10 GHz transmit section. CHA
> IF set at 1.298 GHz max +9 dBm
> LO set to 9.070
> 
> 10.368 -7 dBm
> LO @ -47 dBc (measured -54 dBm)
> 
> 5 GHz transmit section. CHD
> IF set at 1.350 GHz max +9 dBm
> LO set to 4.5 GHz
> 
> 5.850 +6 dBm
> LO @ -53 dBc (measured -53 dBm)
> 
> === output in the 9-10 GHz range where the board is tuned ===
> 9.0 GHz +1 dBm
> 9.3 GHz -2 dBm
> 9.7 GHz -6 dBm
> 10 GHz -7 dBm
> 
> Board is set up for:
> IF 1-3 GHz
> Up/Dwn conversions 5-6 GHz & 9-10 GHz
> 
> Mike
> 
> 
> On 4/8/2018 2:46 PM, Ron Economos via Ground-Station wrote:
>> I have one. I'll be doing some phase noise testing with 5.6 GHz down 
>> conversion soon.
>>
>> Ron W6RZ
>>
>> On 04/08/2018 03:57 AM, Mike Seguin via Ground-Station wrote:
>>> 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.
>>>
>>> Next is to try 5 GHz.
>>>
>>> At this point, no real measurements - just seeing signals going 
>>> in/out and learning the setup.
>>>
>>> After initial sectional tests, I want to set it up as 5 GHz TX and 10 
>>> GHz receive.
>>>
>>
>>
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> 

-- 

73,
Mike, N1JEZ
"A closed mouth gathers no feet"