[hpsdr] Pandora's Box

[Ben Hall]

Hi Phil and gang!

pvharman at arach.net.au wrote:
> Whilst it is early days as yet in the planning of a PA (or more likely PAs) I 
> think that it is unlikely that one of modest power, say 100w, will fit in an 
> Atlas slot.  

I'll admit, I'm not very smart on PA's.  I thought a 100W PA would be a 
stretch, but I didn't want to expose my ignorance...  ;)

> In which case a special ( i.e. not 13.8v DC) mains power supply will be 
> developed that again will not fit in an Atlas slot. 

I was thinking this too - 100 watts at 13.8 volts is a lot of current. 
Certainly too much to pump thru an Atlas.

> In designing an enclosure allowing room for a switching PSU and PA external to 
> the Atlas based boards would be a good idea.

Now for the $100,000 question - how much power and heat should Pandora's 
Box allow for?  Moving the 100 watt PA out of the Pandora makes the 
thermal management *much* easier.

> Sorry that I can't be more specific at the moment but the PA ideas are still at 
> an early stage. 

That's totally okay.  We can always make up a PA enclosure around the PA 
when it gets to a later stage...

-- 
Thanks and 73,
Ben, KD5BYB


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