Steve Hicks, N5AC and the VP of Engineering at FlexRadio
has posted an excellent explanation and bust of the
ADC overload myth on the FlexRadio community. You don’t
need to be registered on the community to read this excellent write up:
The opinion expressed in the Flexradio editorial about noise blankers
being
completely harmless, is not an opinion, it is even false.
It really isn't an accurate or factual technical article. It is a sales
brochure meant to enforce the love each of us have for a particular system,
in this
Hi guys
I would like to add my 2 cents on this matter. If you not good, or a very
good, RF engineer it is hard to understand what DDU/DUC radio do for you.
The most important thing, DDC/DUC radios are not the same just because of
the DDC. Number of bits, jitter on the clock works like phase
The opinion expressed in the Flexradio editorial about noise blankers being
completely harmless, is not an opinion, it is even false.
What Flexradio says: ""With a noise blanker, we remove thousands of samples
with no negative effects to the signal being monitored and a momentary
overload from
comparisons/analysis.
72 de Jim R. K9JWV
> Subject: Re: Topband: SDR Mythbusters - ADC Overload myths debunked...
> To: rodenkirch_...@msn.com; topband@contesting.com
> From: rich...@karlquist.com
> Date: Sun, 11 Oct 2015 00:10:56 -0700
>
> > Steve Hicks, N5
On Sat,10/10/2015 2:15 AM, Steve Ireland wrote:
Of course, I was talking about using a DUC/DDC in a single
transmitter/receiver urban/semi-rural station setting on a quarter to
half an acre block, which is the setting in which the vast majority of
people who subscribe to this reflector would
On Sat,10/10/2015 2:15 AM, Steve Ireland wrote:
Of course, I was talking about using a DUC/DDC in a single
transmitter/receiver urban/semi-rural station setting on a quarter to
half an acre block, which is the setting in which the vast majority of
people who subscribe to this reflector would
:51 PM
Subject: Re: Topband: SDR Mythbusters - ADC Overload myths debunked
G’day all
As someone who has extensively used a digital down conversion/digital up
conversion transceiver (original HPSDR) on the Topband, it is good to see
this myth being debunked publicly as much as possible. Anothe
Mike, what version of SSDR is he running? I believe the current 1.5 release has
a reported issue on transmit with some (all?) 6300's. I understand a point
release is being readied to address that. I suppose he could go back to 1.4.6
in the meantime.
I rarely ever plug a mic into mine.
G’day all
As someone who has extensively used a digital down conversion/digital up
conversion transceiver (original HPSDR) on the Topband, it is good to see this
myth being debunked publicly as much as possible. Another station who has used
an HPSDR even more extensively than me on Topband is
0
> Subject: Re: Topband: SDR Mythbusters - ADC Overload myths debunked...
>
>
> From Stu, K6TU
>
> As with any technological change, there are many myths, past truths or part
> truths that get repeated endlessly and out of context by those frightened or
> challenged by the c
Interesting. Here at my place - wires in the trees, I'm able to transmit on the
K3 (100w, old SYN) within about 20 kHz of the frequency where the Flex 6300
(zero band filtering radio) is listening without any detriment to the Flex's
ability to hear signals on the frequency it's listening to.
I
I bought a partially-assembled SDR kit a few years ago. It's an older
Softrock Xtall Lite 9.0 with the optional electronically-switched BPF,
designed by Tony Parks. Well under $100 for the kit. I just "knew" that it
had to be a cheap, compromise SDR receiver prone to overload, birdies, and
Seems to me the devil is in the details. Obviously, if you pump enough
RF power into the input of any SDR (e.g., 100W), eventually it is
going to collapse. If the ADC can handle a few volts, that should make
it pretty immune to any but the most extreme environments. I've not
noticed any overload
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