[Moon-net] SPANFI

[Edward Cole]

At 08:53 AM 2/18/2007, OK1DFC wrote:
>Hi all,
>courtesy of Michel OH7EH I have available nice attenuator and will be
>possible to test soon new designed SPANFI witch I am developing now in
>cooperation with Franta OK1CA and Ingo DF1VH. Draft of that you can find
>here http://www.ok1dfc.com/EME/technic/spanfi/SPANFI.pdf How I have promised
>on EME conference 2006, I try to have soon available PCBs and all others.
>Gunter DL4MAE has possible to do main technical parts like are milled AL box
>for input amplifier and also for ATF LNAs. Just I need only more time to
>final all necessary things. Will keep to inform you here soon.
>Regards
>Zdenek - OK1DFC
>QRV EME - 144 - 1296 MHz
>WAC 432 - 1296
>www.ok1dfc.com
>10m DISH - QRO - JN79GW
>_______________________________________________
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Zdenek,

I looked at the block diagram you provide with interest.  This 
appears similar in some parts to a wide-band IF that I worked on last 
year.  I used MAR-6 IF Amplifier stages and the AD8307 as 
log-amplifier/detector and fed this to a MAX-186 ADC to provide a 
digital input to my computer where the data was graphed using 
SkyPipe.  My prime use was a total-power IF for radio astronomy but 
it could also find use for antenna noise-temp analysis.
http://www.kl7uw.com/rawbif.htm

Will you be using a A/D to interface a pc?  I will be following your 
project with interest.


73,
Ed - KL7UW
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