[amsat-bb] Re: Full Duplex radio?

Patrick STODDARD (WD9EWK/VA7EWK) amsat-bb at wd9ewk.net
Wed Aug 22 08:09:33 PDT 2012


> Well, I guess that would make sense too.  Thanks Patrick, I'd never heard of
> that before.
> So, what exactly is their target market for these things?  I may not be
> confused anymore, but I think they still might be.

Since these newer Chinese-made radios come to the US market with FCC
Part 90 certification, they could be used for commercial two-way radio
applications.  When these radios were being sold by shops outside the US,
they would not come with any sort of FCC certification.  The Wouxon HTs
started this "trend" of having the radios meet FCC Part 90 and marketed
for both amateur and non-amateur use, and sold through US-based
importers and dealers.

It is interesting that they can be certified under Part 90, yet are field-
programmable (for hams, our ability to program the radio memories or
even have access to VFOs) - something that is usually a no-no in the
eyes of the FCC for commercial radios.  If that mode is disabled with
the programming software, that may be how the radios are gaining
certification for commercial use.  Some commercial radios have a field-
programming mode that requires a passcode or physical key to access,
and is usually only in the realm of the shops that sell and maintain these


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