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[Linrad] Re: Linrad and MAP65-IQ
- Subject: [Linrad] Re: Linrad and MAP65-IQ
- From: Edward Cole <acsalaska.net; kl7uw@xxxxxxxxxxxxxxxx>
- Date: Fri, 06 Mar 2009 00:15:37 -0900
At 03:25 PM 3/5/2009, Les wrote:
>Hi guys,
>
>We are finally up and running. Using a DEM 144/28 converter with the
>SDR and Map65-IQ as an EME band scope into a seperate computer, while
>running WJT6 for RX/TX (TS-2000) on another.
>
>I have noticed that the Freq reported in MAP65 is 4 MHZ off. I have
>Linrad set to 28.130 and Fadd to 116000.
>
>Still running into issues where linrad freezes and needs to be
>rebooted but Im running on only a P3 1,GHZ with 512 MB.
>
>I have not been able to decode anything below -22 db, Are there any
>other settings to be played with on Linrad to increase sensitivity or
>is it function of my limited processing power ?
>
>Thanks Joe and Leif for the new toy,
>
>Les/Daniel
>W2LPL/W2DBL
My experience using the SDR-IQ at 28-MHz as IF for my 2m-eme station
is that the SDR-IQ seems gain deficient. I lowered my MDS -14 dBm by
adding 18-dB of IF gain before the SDR-IQ. I am using a DEMI 144/28
behind two 2m preamps with total gain of 30 dB. I see -28 traces
with 100-KHz Bandwidth (RBW ~ 3Hz).
73, Ed - KL7UW
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