[hpsdr] Atom Mobile Power Supply

[Doug Bade]

I had sent a reply that seems to have been eaten by the mail servers...

I am using the M2-atx 160 watt 6-24vdc input pico psu to run my atom 
330 board and the  HPSDR with Mercury Ozzy and Penelope... and it 
seems to run fine. Minimum switching noise when the antenna is at 
least a few feet from the PSU... One particular ferrite device on the 
PSU board seems to emanate most of the rfi.. touching it causes 
re-radiation into the air and raises the spikes across the band on 
the HPSDR.. when not touching it the rfi from the PSU is only a db or 
so ripple in the noise floor .... with no shielding or other help.. 
just bare boards mounted in a frame next to the atom mb... I have not 
tried to TX yet but rx and XP operations seem quite satisfactory on 
this PSU. It is internally fused at 15 amps.. I suspect current will 
go up as vcc goes down but at 13.8vdc in all is well..

So far so good... Hope folks find this useful as a datapoint... I may 
post pix as I am home brewing an enclosure from Home Depot parts.... 
Starting as a frame, to be covered by sheet stock when I get there...

I have a 5w PA and switched filter assy to install this weekend....

73,
Doug
KD8B



>mp3car.com has an online store as well as a very active forum of 
>people interested in computers for their cars.  They sell small LCDs 
>that are 12VDC. Most discussion on the forums is about 7 or 8 inch 
>diagonal which is popular for in-dash use.  I have a 10" LCD monitor 
>I bought off eBay that is 12VDC (supposedly doesn't require 
>regulated power, but not sure I'd trust that too far).  The mp3car 
>forum also has users of the Intel mini-ITX boards as well as a lot 
>of others so it may be a resource for other computer related 
>issues.  As on most forums, the experience level of members varies 
>from experts to novices and worse and so can the advice.
>
>I have no financial interest in mp3car.com, but I have been a forum 
>member for a few years and bought an item or two from their store.


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