Yes, the main use of full duplex so far has been for David's
testing.
Purpose-built VHF/UHF radios don't need dual-band, they can use
timeslots and put the repeater on the same frequency as its input.
Thanks
Bruce
On 06/23/2014 11:51 AM, Steve Sampson
wrote:
I had a thought about memory usage, and the idea
being that in most cases (HF) people will be using the modem
half-duplex. This means that while the modem is receiving, it
can allocate global memory one way, and then when it switches to
transmit it can free and reallocate global memory a second way.
This allows the modem to operate in much less RAM requirements.
Of course the switching time if too great would be a bummer
if it took more than a second to free and allocate.
On VHF/UHF of course you really need full duplex, as almost
everyone has dual-band radios these days. But that could be a
"+" modem for only $49.95 USD more :-)
Steve
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