David Kirkby wrote:
>Ian White GM3SEK wrote:
>> David Kirkby wrote:
>>
>>>The N2PK VNA
>>>http://users.adelphia.net/~n2pk/VNA/VNAarch.html might well be
>>>better, but I gather is not simple to build.
>>>
>> Just to be clear: the only thing that's "not simple" about the N2PK
>>board is that it uses surface-mount components. That may be new to
>>some people, but it really isn't hard.
>> The payback is that there's no setup needed at all. If you build
>>the N2PK board carefully, it's plug-and-play.
>
>It should like it is a better bet then.
>
>I have quite an admiration for HP and their instruments and often feel
>their used kit is better value than the cheap junk on the ham market.
>But that N2PK device is clearly not "cheap junk".
>
Oh no, it's a very clever device. The concept has been around for some
time, but N2PK has really made it work. As for accuracy, comparisons
with commercial VNAs run very close indeed.
>BTW, has anyone got the N2PK borad working under UNIX/Linux? Seems a
>shame if you need a Windoze PC to use it.
I'm not aware of any Unix/Linux versions of the control software.
>Also, I'm not sure how much longer parallel ports will be on PCs.
>
Fortunately there are still lots of parallel printers around, so there's
still a need for the parallel port. G8KBB has also developed a USB
interface.
--
73 from Ian GM3SEK 'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.co.uk/g3sek
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