Gentlemen,
In January I purchased from Flex Radio the SDR-1000 transceiver with
built-in auto-tuner plus USB adapter, Shuttle Pro controller, and
the Edirol FA-66 6-channel Portable FireWire Audio Interface for a
total of about $2200. It's a very interesting radio and I love
computers. Howe
Jim:
I wish I was a programmer. I run Macs except for SDR1000 on a PC. I'm hoping
someone will soon have an SDR on a Mac.
73,
John N1JM
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Jim, W4ATK
Sent: Saturday, March 31, 2007 5:51 PM
To: Flex-radio Refle
Imagine a channel that is 500hz wide, the width of
many CW filters. Imagine you are transmitting in the
top 50hz and receiving in the bottom 50hz of that
500hz bandwidth. How is this not full duplex? As
long as you don't overload the DSP you can do
precisely this. That is what brick wall filter
Guy look at SETUP --> General --> Options right hand side. UNcheck
the *Beta* and *Release* boxes just in case they are trying to get
out on the Internet to look for updates to the code. If you have a
good firewall, the whole console could be spinning it's wheels
trying to get through it.
Ken
I ran across some interested posts re: SDR1000 and OS-X on "John's Japan
Blog". Seems this gentleman is making progress towards an OS-X console.
I am curious as to the number of folks either running under OS-X or
working
toward that end. I just replaced my old HP laptop with a new
Until tonight. I downloaded the latest SVN and this thing is a hoss!
Great
job Eric and gang. I DO LOVE MY FLEX
73s, Jim, W4ATK
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If you do not receive and transmit at the same time
(full duplex) then OK, I was wondering aboud the full duplex situation.
The main point I want to make was the latency of the system after the
transmitting stopped
I like the new software with separate DSP for TX and RX.
BTW
The first tranc
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Lee A Crocker wrote:
> As long as you don't over load the DSP you're basically are not limited.
>
> How would you do this? How about thinking about how a separate RX and TX
> works instead of a transceiver. Ham radio used to be no transceivers. It
> was all separate TX and RX. Transceive
Thanks for your ideas, Bill.
The only change I could think of that I made to the system was an upgrade to
the latest, "greatest" McAfee Security Center. I'd been suspecting this was
a resource hog for other reasons, so this morning I decided to fully remove
it (which took some research & effort!)
Well, some how I got it down loaded and it works fb. However, this
"Button1", I take it I don't want the antenna connected when I push it?
Strange things happened when I did, so I recalibrated with my XG2. W8XO
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Hi Jeff
What you say is true, but you have chosen the worse
case scenario for the troughput. Any system has
inherent "latency". Transmission through a xtal
filter introduces latency. The time to transmit
across a physical distances introduces that as well.
Put the signal in a long transmission
el of a FM broadcast receiver. No matter where
you tuned, you'd get the same audio.
Just the thing for the "Do not adjust your dial, we are in control" gag.
Jim, W6RMK
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At 01:00 PM 3/31/2007, Jeff Anderson wrote:
>Hi Lee,
>
>I'm not sure I'm following the discussion corectly, but, in my opinion,
>full-duplex doesn't necessarily mean zero latency. For example, on the
>receive side of the SDR1K, there's a delay determined by whatever buffers
>there are (audio buffe
Hi Lee,
I'm not sure I'm following the discussion corectly, but, in my opinion,
full-duplex doesn't necessarily mean zero latency. For example, on the
receive side of the SDR1K, there's a delay determined by whatever buffers
there are (audio buffers, dsp buffers, etc...) and their length. A buff
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Then you need to listen again. The software architecture has been changed from
a half duplex model to a full duplex model. A fast relay does do something
since the spec for Pactor as I understand it is 20ms for lockup but it may be
longer. The SDR-1000 is still a half duplex radio, but the po
A fast relay does nothing to reduce the time required for the
received signal decoding - the delay of many ms that occurs before a
received signal appears at the sound card audio output. IIRC, PACTOR
requires a TOTAL turn-around time of around 30-35 ms. If you compare
audio from a SDR-1000 simu
Having had fun playing with my SDR-1000 with 1 watt on HF, it's now time
to get it tamed for VHF work, which was the object of my purchase.
I have the 144MHz DEM transverter installed. I will be using that to
drive transverters for other VHF/UHF bands. If, for example, I am using
a 144-1296 transv
Ugh - good computer, gone bad -- maddening. Probably going to
take a bit of detective work to sort out the issue.
Can you think of any new hardware/software you installed in the near
vicinity of things getting flakey? That would be the first thing
I'd look at in terms of sorting out where
An excellent idea Jim!
Let's see, if the ARRL gets their emissions rules through,
if you call it one transmitter, then you're breaking the
bandwidth rules.
Maybe they'll insist on only one QSO at a time. That will
be interesting defining. Probably like the group of EMEers
who are trying to defi
Here's an off-the-wall discussion regarding contesting with
sophisticated software radios
Now that we have a radio (SDR1000) which can receive a fairly wide
swath (50kHz) of the band and also, conceivably, transmit an equally
wide swath, an interesting(?) possibility exists.
You could have one
One of the goals was to see if the SDR-1000 could be made pactor ready under
software. It looks like a modification would be necessary to meet that goal.
Here are some relays that would fill the bill if someone wanted to mod their
SDR for QSK
RFK-6396 high speed SPDT RF switching relay with SP
The 31/Mar Flex Radio Teamspeak audio is available at:
< http://www.hamsdr.com/dnld.aspx >
Mike - AA8K
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