Re: Microwave SDR Group
David Lewis <g8jxa.radio@...>
Ethernet V. USB
The IP address (lack of) problem in a company network. You can use a
USB to Ethernet adaptor to turn the Ethernet port into USB;
No need to beg an IP address.
Ethernet is OS agnostic.
Ethernet cable can be 200m long, USB is good for 5m.
Lack of Ethernet power, could still use the USB port for power only
(as in the SoftRock).
Bandwidth for ATV, at home run Freeview TV over Ethernet and Wi-Fi
every day without any problem, so don't think it will be an issue.
Ethernet also supports remote operation.
The colour scheme can be changed, a good example is Ham Radio Deluxe
that supports high contrast colour schemes.
Using Ethernet and a mini Webserver a new GUI design could be 30
minutes with an HTML editor.
--- In ukmicrowaves@..., "Willis, MJ \(Michael\)"
On Behalf Of Jonathan NaylorI
thanunderstand why you went for Ethernet.I would disagree on this point. We want to be able to support the
low200mW and 3 dB NF but I suspect this is merely the back end to a
thenoise amplifier and a driver for the high power amplifier.Correct. Most microwave operators are familiar with system design in
of usband, just as a nice band to use for a transverter IF for those
design awith transverters already.It has been talked about. If someone were to come forward and
front end, it might arrive even quicker. The constraints on designare
not bad, the local oscillator must be clean BUT it does not need toa
the LO by 3?Why
can you not use a DDS to generate a "dirty" signal, multiply thisup to
act as an in band beacon and and have a cleaner LO frequency lockedto
it by the software every so often. All the LO filtering is thendone by
DSP and it does not matter that the DDS spurs are only 40 dB down.As
long as the clean LO does not drift too much this should be OK. Youcrystal
source like that from the IC202S multiplied up. That circuit managesup
either by multiplication or by mixing should give an LO with goodshort
term stability, reasonable and correctable drift.laptopWhatever Gui interface you design, it needs to be usable with a
impossible toon a hilltop when you can't see the screen very well. The current
thatuse in a field.What makes you say that? There is no easy design for GUIs that will
echoes the IC-706 I have hopefully meant that the least number ofscheme
and relatively large figures.grey
background are not easy to see when there is sun on the screen.This is
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