[Ground-station] Lime LMS8001a Companion Board

[Michelle Thompson]

Hi Mike,

Were you able to get the measurements you were after last weekend?

Waiting on u.FL cables to arrive in the mail today.

-Michelle W5NYV



On Mon, Apr 9, 2018 at 3:44 AM, Mike Seguin via Ground-Station <
ground-station at lists.openresearch.institute> wrote:

> 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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>>> Ground-Station at lists.openresearch.institute
>>> http://lists.openresearch.institute/mailman/listinfo/ground-station
>>>
>>
>>
> --
>
> 73,
> Mike, N1JEZ
> "A closed mouth gathers no feet"
>
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