[hpsdr] Munin - minimum drive to achieve 100W output

[dmb at lightstream.net]

Hi Kjell,

Thanks for the info.

I ordered the Chip Quik desoldering kit, but I'll probably have the amp
built before it arrives. Since I also have the Elecraft KPA500 amplifier
here, which will achieve full output with around 35 watts of drive, I
should be all set even without rotating T2.

Enjoy your Arctic Summer!

73, Dale
WA8SRA


> ***** High Performance Software Defined Radio Discussion List *****
>
> Hi Dale.
>
> I think you can leave the transformer as it is if you are going to use it
> on frequencies below 30 MHz. My gain settings are around 50 dB for all
> bands except 6 meter where it is around 45 dB. As the maximum gain is 38,8
> dB, still 6 dB left.
>
> When I am back in normal life after a very fine Arctic summer, I plan to
> make at least 2 Munin PA´s. Then I´ll try to publish data and
> measurements
> on the Munin 2 web side.
>
> 73, Kjell
>
>
>
> PÃ¥ Mon, 26 Aug 2013 00:48:47 +0200, skrev dmb at lightstream.net
> <dmb at lightstream.net>:
>
>> ***** High Performance Software Defined Radio Discussion List *****
>>
>> What is the minimum drive power required by Munin to achieve 100W
>> output?
>> My Penelope board has T2 mounted backwards, and I think getting I'm
>> dangerously close to damaging the board trying to desolder it in order
>> to
>> turn it 180 degrees. If 250 mW is enough to drive Munin close to full
>> output, I'll just leave the transformer as-is.
>>
>> Is there a spec somewhere? I see a lot of documents related to assembly
>> at
>> < http://k9ivb.net/munin2/ > but haven't see any spec's by which I could
>> determine minimum drive requirements.
>>
>> Thanks & 73
>> Dale, WA8SRA
>>
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>
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