I ended up listing my fully loaded 5000A on eBay:
http://www.ebay.com/itm/190833186647
In case the link doesn't work, it's item number 190833186647
73,
John
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FlexRadio Systems Mailing List
FlexRadio@flex-radio.biz
Can the 5000 V/U be configured to put both 2m and 70cm on a single antenna
connector, or are you required to use separate connectors for each band?
Thanks,
John
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FlexRadio Systems Mailing List
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Thanks, Alan. I don't have my 5K running at the moment (no antennas installed
yet) but am planning for a portable operation and wanted to figure out antenna
cabling.
73,
John
On Apr 26, 2012, at 8:09 PM, Alan NV8A n...@charter.net wrote:
On 04/26/12 06:17 pm, John Ackermann N8UR wrote:
Can
Alan NV8A wrote:
D-Star is not proprietary to Icom. It's my understanding that it was
developed as a cooperative venture between JARL, the manufacturers, and
the Japanese government. I think that Kenwood sells D-Star rigs in Japan
but for whatever reason doesn't in the USA.
Not to go too
Larry Rappaport said the following on 12/11/2009 08:09 PM:
Well, you guys are ignoring IRLP for some reason. That uses a free codec -
FreeVOIP, I think. That is completely free, in use worldwide, uses Linux,
etc. What's wrong with that? Basically, it's a free version of D-Star.
I like
I haven't been able to find anything that describes the mode/band
operation and antenna selection matrix for the 5000 with the VHF/UHF
upgrade installed. In other words, what bands are available on what
rear panel connectors, and what combination of HF/6M/VHF/UHF can operate
simultaneously?
I've used the F5K with an external reference and can verify that it
works; you can see WWV's carrier jump when you plug and unplug the
external reference.
However, perhaps Tim could verify something for the time-nuts amongst
us: is the clock for the ADC locked to the same reference as the
I am contemplating what to do with my SDR-1K and thinking it might make
sense to revert it to a QRP unit, pulling the amplifier and tuner out
for use with other QRP rigs (like my HPSDR stack).
I know there is some interface cabling between the PIO board and the
amplifier. Is that an
Lux, James P wrote:
Being able to buy it conveniently is even different.
-- you call microsoft
Oh you want to buy XP for your system. Sure we still support that for people
needing to keep their XP machines on the factory floor working. You'll need to talk to
one of our Microsoft Industrial
I posted this shortly before Christmas, but had no takers at the price I
asked then, so am giving it another try. Rather than posting a price,
please contact me off-list at j...@febo.com and we'll see if we can make
a deal.
FOR SALE: SDR-1000 with 100 watt amplifier, ATU, and DEMI 2M
I may not have been searching in the right way, but I couldn't find out
if it's possible to record both RX1 and RX2 to a WAV file
simultaneously, preferably one RX in each (left/right) channel.
Can that be done?
Thanks,
John
___
FlexRadio Systems
Hi --
Too many radios, too little time...
SDR-1000 in as-new condition with 100 watt amp, internal antenna tuner,
internal DEMI transverter, USB/Parallel adapter cable.
Serviced by Flex in July 2007 with all ECOs and updated 8 pin mic
connector installed; test report included with the radio.
I discovered that I have an unassembled UCB complete kit (including
relays) that I won't need. This is Tony Parks'/Phil Theis' original
version, not the later Poor Man's UCB.
I paid $99 plus shipping for it in early 2007. Best offer over $50 in
the next 72 hours gets it.
Thanks!
73,
John
I think this has been discussed here before, but I can't find the
references...
I'd like to find a 12-14 inch, 1024x768 LCD monitor to fit under the
shelf on my desk and to display PowerSDR in a dual-monitor configuration
with a larger monitor running other applications.
Small monitors seem
-1050D7697472EE56
http://www.esis.com.au/LCD-Monitors/LCD-Monitors.htm#LCD_12_14
They are rare creatures and [Small != cheap]
-Tim
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of John Ackermann
N8UR
Sent: Thursday, October 02, 2008 11:32 AM
To: flexradio@flex-radio.biz
I think I reported this earlier, but didn't get feedback as to whether
anyone else has seen this, so I'll ask again, now that I have 1.14.0 and
am still seeing the same thing...
If I select the waterfall display for both RX1 and RX2, it appears that
the RX2 waterfall is simply a duplicate of the
Eric, since you're asking for input...
I already filed an enhancement suggestion for this, but two thoughts
about antenna selection:
1. Since you use screen real estate to show the selected antennas (on
the left, about 1/3 up from the bottom), why not turn those into drop
boxes so you can do at
.
73
Alan NV8A
On 07/26/08 07:55 pm Frank Brickle wrote:
Sapristi niakos! Found out! Precisely -- and yours also, John, you silly,
twisted boy.
73
Frank
AB2KT
On Sat, Jul 26, 2008 at 4:31 PM, John Ackermann N8UR [EMAIL PROTECTED]
wrote:
Not surprising -- I recall Frank's
I just installed 1.12.1 and continue to see a bug I noticed earlier, but
didn't have a chance to question then...
When I am using RX1 and RX2, and set both displays to waterfall, it
appears that the RX2 waterfall is simply a copy of the RX1 display,
though the legend of the lower waterfall
I'm thinking that instead of two separate sets of amplified speakers to
support the Flex 5000 audio out, as well as the computer's audio out, it
might be more efficient to use a single box that would be a mixer and
amplifier to drive a single set of unamplified speakers.
Has anyone done something
levels, very nice sound. Some shacks may require a few
ferrites ;-)
Mike K4EAR
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of John Ackermann N8UR
Sent: Saturday, July 26, 2008 12:59 PM
To: Flex Group
Subject: [Flexradio] Audio mixer/amp
in turn drives a pair of high quality
non-amplified speakers.
It works great, and provides independent volume, balance, and muting for
each of the 8 stereo input channels.
73, Dale
WA8SRA
John Ackermann N8UR wrote:
I'm thinking that instead of two separate sets of amplified speakers
Not surprising -- I recall Frank's familiarity with The Highly-Esteemed
Goon Show!
John
Lee Mushel said the following on 07/26/2008 06:34 PM:
Frank,
I can't believe it! someone else who uses the term highly-esteemed! My
use goes back 40 years to one of my first jobs and the context
Mike Naruta wrote:
I once became the IT Manager for a company that used
MAI Basic Four equipment. They used special PROMs in
their terminal and printers that were only available
from MAI Basic Four, even though the equipment was
common Printronix, etc. The PROM in the printers
would
Frank, the 50 ohm resistor was added for two reasons: first, it
provides a termination for the coax that's feed the signal and in theory
that minimize jitter due to ringing on the coax, and second, the
unloaded P-P voltage from oscillators rated at, say, 6dBm into 50 ohms,
is high enough that it
Hi Jim --
The DCC proceedings (paper version) will be available very shortly --
everyone at the conference got one, and I believe that they will be for
sale via TAPR and/or ARRL as soon as logistics allow.
More importantly, authors retain the copyright to their papers so they
are free to
Jim Lux wrote:
At 07:23 PM 6/28/2007, Larry Phipps wrote:
My software is free, but not open source.
And that appears to be the case for most (if not all) low cost VNA solutions.
The TAPR VNA (sold by Ten-Tec) software is open source and licensed
under the GPL. It's a Windows
Jim Lux wrote:
At 06:40 AM 6/29/2007, John Ackermann N8UR wrote:
Jim Lux wrote:
At 07:23 PM 6/28/2007, Larry Phipps wrote:
My software is free, but not open source.
And that appears to be the case for most (if not all) low cost VNA
solutions.
The TAPR VNA (sold by Ten-Tec) software
Jim Lux wrote:
At 06:40 AM 6/29/2007, John Ackermann N8UR wrote:
Jim Lux wrote:
At 07:23 PM 6/28/2007, Larry Phipps wrote:
My software is free, but not open source.
And that appears to be the case for most (if not all) low cost VNA
solutions.
The TAPR VNA (sold by Ten-Tec) software
Tim Ellison said the following on 06/16/2007 04:48 PM:
One mfg. claims that the new very low noise dual gate MOS FETs have a
better noise figure than the GaAs FETs. I have always heard that the
GaAs FETs were the way to go for the best noise figure, so I am confused
from the marketing hype.
A while ago I did some testing on the SDR-1000 to see whether an
external 10 MHz reference oscillator gave worse phase noise performance
than the standard 200 MHz oscillator.
Then, John, K20X, did some excellent work (see
http://www.exothink.com/SDR/SDRPN/index.htm)
I've now done some follow-up
To follow up my earlier post, a byproduct of the phase noise
measurements I did was frequency stability during the 5 minute
transmission period. Those results are at
http://www.febo.com/pages/hf_phase_noise/freq.html .
Note that my internal oscillator does NOT have the new thermistor ECO
RAM is cheap. Use a big RAMdisk and load it, or at least the OS
elements that need to be on a R/W filesystem, from USB or Flash media at
boot.
With a couple of gigs of RAM not being unreasonable today, I'd think you
could make this work using a stripped down version of Windows something
or
Jim Lux said the following on 04/16/2007 06:23 PM:
I'm sure the flex folk have been furiously formulating a response to
all of our speculation, little realizing what a firestorm an offhand
FAQ might trigger.
I just throw some more gasoline on the fire, out of sheer
cussedness... reverse
Jim Lux said the following on 04/11/2007 07:52 PM:
If you multiply it up to 200 MHz for the SDR1K, the noise would
increase by 20logN, or 26 dB.. That would make the noise at 1kHz out
about -124dBc/Hz. The VF161 in the radio already has a floor of
about -125 dBc/Hz at 1kHz out, so it's in
The 50 ohm termination does two things:
1. It terminates the coax from the oscillator so you reduce ringing and
the possibility of increased jitter that results, and
2. The maximum input voltage that the DDS can accept is fairly low, and
an unloaded clock signal can fairly easily exceed that
Which transformers did you find with that bandwidth? I bought some of
the Stacor ones that had been recommended earlier, and they have
signicant roll-off above something like 10kHz.
John
kd5nwa wrote:
You need a transformer with higher bandwidth and better phase
response, you can buy
Count me in on the groundswell...
John
Frank Brickle said the following on 01/01/2007 02:56 PM:
If people want a consumer-oriented Linux version, there has to be
a groundswell of popular support for it. Otherwise the individual
Linux developers are going to continue to write to suit
Edward J White wrote:
Hi Gang:
I am looking for a Rubidium frequency standard to run the SDR-1000
oscillator. I know others have done this to run 10 GHz. What is the best
price and make model where and where should I be looking for one(I know the E
place).
Ed
WA3BZT
You may want to be
I recently built a 3 watt stereo amp from Carl's Electronics
(http://www.electronickits.com). For $17.95, it's a very good deal.
I put it in a simple metal enclosure and got nice audio, but am still
having some RF issues. I'm now planning to repackage it in a Hammond
box with bypassing on
Robert McGwier wrote:
My 2.4 GHz Sony Vaio is solid and fast. I need to clean it out because
the fan is always on high but it is solid. I am reluctant to give it up
for one of these throttling monsters that you can't choke off from
throttle. My Dell laptop which runs Linux, has the
from a PC speakerset,
there are lots of them around in secondhand shops
some with 230 / 127 volt power others with 12V DC
maybe you can try that.
good luck peter pa0pvn
-Oorspronkelijk bericht-
Van: [EMAIL PROTECTED] namens John Ackermann N8UR
Verzonden: za
Not speaking for the Flex-Radio team, but as someone who runs a Mailman
list server...
Unfortunately, Mailman doesn't support searchable archives out of the
box. There are ways to do it (which the hpsdr folks must have figured
out) but it takes patching Mailman and using additional software.
Jim Lux said the following on 03/19/2006 03:01 PM:
At 11:34 AM 3/19/2006, Neal Campbell wrote:
Hi guys
I just bought a Bliley NV26R891 voltage controlled ovenized 100 Mhz
crystal oscillator. Should it be possible to use it for external frequency
standard for the SDR-1000? Any ideas on how
Great work, John!!!
I'm really looking forward to the actual SDR-1000 measurements to see
whether the noise multiplication from the on-chip multiplier is
according to theory or if there are other factors involved beyond simple
scaling.
I haven't had a chance yet, but will also compare your
Hi Gerald --
My $0.02:
First, I think the mailing list(s) are a huge improvement over the
forums. It's an issue of push vs. pull -- I'm much more likely to read
an email that ends up in my inbox than I am to remember to go to the
forum and work my way through the postings. Forums are great
For what it's worth, I have had very good luck with high-pass filters by
I.C.E. which I think are sold through Array Solutions. They have two
versions -- one with a cutoff just below 160M, and one with a cutoff
just below 80M. They handle 100 watts so can be put in the antenna line
after the
Jim Lux wrote:
At 05:58 AM 1/19/2006, John Ackermann N8UR wrote:
Jim Lux wrote:
Of course... the SDR1000 does have an advantage because it's a very
simple receiver with fewer stages to screw things up.
While the SDR-1000 can do a credible job on its own, I just want to
reinforce
Jim Lux wrote:
The soundcard program I used, Argo, permits a frequency calibration
coefficient to be entered. I used the 1800 Hz third harmonic of the
WWV/WWVH 600 Hz tone as demodulated by the TS-870S in its AM mode as a
calibration standard. When ionospheric fades null the carrier, the
Eric Ellison said the following on 01/18/2006 07:01 PM:
Anybody ever wonder if folks out here have even better equipment than ARRL
for generating the test?
Sort of would be fun for folks like yourself, Tom, JPL?, John or others,
with access to millions of dollars in equipment to do
Jim Lux said the following on 01/18/2006 07:36 PM:
At 04:24 PM 1/18/2006, John Ackermann N8UR wrote:
Eric Ellison said the following on 01/18/2006 07:01 PM:
Anybody ever wonder if folks out here have even better equipment
than ARRL
for generating the test?
Sort of would be fun
it could be pulled +/- 500 ppm.
Thanks for the response.
Comments?
Eric2
-Original Message-
From: Tim Ellison [mailto:[EMAIL PROTECTED]
Sent: Saturday, January 07, 2006 10:32 PM
To: Eric Ellison; John Ackermann N8UR
Cc: [EMAIL PROTECTED]; FlexRadio@flex-radio.biz
Subject: RE
Eric Ellison wrote:
[ everything trimmed ]
It sounds like there are several groups doing a lot of interesting
things with FGPAs that extend way beyond just frequency stability. I
think that's really great, and thank Gerald for creating such a great
base for creative people to play.
From
: Wednesday, January 04, 2006 5:39 PM
To: John Ackermann N8UR
Cc: [EMAIL PROTECTED]; FlexRadio@flex-radio.biz
Subject: Re: [Flexradio] DIP OCXO for SDR
Gentlemen,
The DDS does Direct Digital Synthesis hence the name. It does not
divide
back to anything but runs an phase accumulation engine at 200
.
;
; Version:
;
; 1998-Aug-05, Version 4, tvb
;
; --
; Using Microhip assembler.
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of John Ackermann N8UR
Sent
Jim Lux wrote:
At 10:11 AM 1/4/2006, [EMAIL PROTECTED] wrote:
The SDR1000 can use clocks between 10MHz and 200MHz so long as when
multiplied by an integer it equals 200 MHz. I use a 10MHz TCXO.
73,
k2ox
However, when you multiply up using the internal VCO, the phase noise takes
a hit.
[EMAIL PROTECTED] wrote:
First of all, any osc multiplied up widens its sidebands
(phase noise) by the multiplication factor and the inverse is
also true. The DDS does a 20X to 200MHz and a divide by 20 to
get back to 10MHz. I guess it's academic at this point how
much jitter is added by the
to the dac at that rate.
No division is performed.
Richard W5SXD
John Ackermann N8UR [EMAIL PROTECTED] wrote:
(01/04/2006 16:09)
[EMAIL PROTECTED] wrote:
First of all, any osc multiplied up widens its sidebands
(phase noise) by the multiplication factor and the inverse is
also true
Eric Ellison said the following on 01/02/2006 06:25 PM:
This is the way to go for three projects. Pardon my ignorance, but is the
V-F Osc a pluggable part? This is the best of all worlds. Unmodified, the
Yes, it's a can oscillator with 4 pins. It basically has the same
footprint as a 14 pin
While I was setting up to record audio from several radio time sources
for the leap second last night (my leap second web page is at
http://www.febo.com/time-freq/leapsecond-2005), I realized that it would
be easy to use the same configuration to measure the delay of the audio
output of the two
Insulation will slow down the response to external temperature
variations, but unless there's a heat source inside the insulated area,
it won't prevent the change (sooner or later, the internal temperature
will match the external).
One very simple answer, that I think Gerald has been playing
did you change jumpers SV1 and SV2 (which switch between differential
and single-ended clock input for the DDS chip)? I'm not sure what
difference that might make; when I did my phase noise tests, the jumpers
didn't seem to make much difference.
One other possibility might be a ground loop
I used the holidays to do a set of tests of the SDR-1000's frequency
stability and phase noise (I got temporary access to an Agilent phase
noise measurement system to make those possible.
I was able to measure the frequency offset, warmup drift, and
frequency-vs.-temperature performance of the
ecellison wrote:
Ross
Well, I think we are a ways away from a kit. I was sort of suggesting that
we try just using the Rockwell - Jupiter board and it's 10 mhz oscillator
'naked' and just see what we get. In 2 lengthy arounds on this thread mostly
what we have is theory and nothing tried at
Mike King - KM0T wrote:
I too have been using an external 10 MHz source on my SDR.
First I used a Rubidium source off of ebay, never noticed anything different
from the internal crystal other than no drift. (rock solid)
Note that I have only used it on 902 thru 24 GHz - where the SDR is the
.
Also thanks in advance for the tests.
Thanks!
-Original Message-
From: John Ackermann N8UR [mailto:[EMAIL PROTECTED]
Sent: Tuesday, November 22, 2005 8:35 AM
To: ecellison
Cc: 'Ross'; FlexRadio@flex-radio.biz
Subject: Re: [Flexradio] Frequency calibration etc
ecellison wrote
[EMAIL PROTECTED] said the following on 11/22/2005 08:29 PM:
Also a comment about the Rubidium, Cesium and Crystal oscillators.
Oscillators are characterized by short term(phase noise) and long
term(drift) freq stability. The phase noise it what concerns us
most when it comes to receiving.
Hi Eric --
Yes, the Reflock II is now shipping as a kit, though it requires fairly
fine-pitch SMD soldering. We'll have an assembled and tested version
available as soon as we can get the contract manufacturer lined up.
I've done some tests of the Reflock II using a GPS 1pps steering an eBay
from TAPR. Gess
you can sit back and relax now that someone else is in the saddle! (smile)
Fat chance!
Eric2
-Original Message-
From: John Ackermann N8UR [mailto:[EMAIL PROTECTED]
Sent: Sunday, November 20, 2005 9:10 AM
To: ecellison
Cc: 'Guy Atkins'; FlexRadio@flex-radio.biz
Gary Schmidt W5ZL wrote:
Bottom line, I *WILL* buy Linksys products in the future.
Drifting things even further off-topic. another reason to support
Linksys is that many of their products (in particular, the ubiquitous
WRT-54G wireless router) run Linux, and the source code for virtually
Eric Wachsmann - FlexRadio wrote:
It has been brought to my attention that our own Dr. Frank Brickle
(AB2KT) has written an article describing why SDR technology is
important. It is an easy read, and is well written with clear points
for even the technology challenged. Well done Frank.
Tim Ellison wrote:
Reflock II info:
http://gref.cfn.ist.utl.pt/cupido/reflock.html
Cost is going to be near $1000
http://www.tapr.org/products.php
You caught us... the Reflock II is going to fund the next TAPR board
retreat in the Bahamas. :-)
Actually, the prices are placeholders
I was playing this morning and discovered something that I don't think I
saw mentioned here before.
First, like others have reported, the old keyer in 1.3.13 seems to be
broken. It keys, but there's no power output.
So, I was playing with the new keyer. I found that after sending
perhaps 6
ecellison wrote:
However, there is so much going on in the SDR-1000 and PowerSDR software
world there are too many projects all at once! It may take till the end of
the year to get a lot done on this. I am gathering hardware and looking
forward to the Reflock 2, but would like to see it run
Jim Lux wrote:
So this uses the SDR1000 as a audio frequency generator, right? The
Delta 44's not in the picture at this point, or if it is, it's
basically digitizing and playing back at the same sample rate.
Hi Jim --
I'm not sure I follow. If the soundcard is not clocking at the rate
Jim Lux wrote:
Consider two RF carriers, at 10.001 and 10.002 MHz
If the DDS is perfect, at 10 MHz, and the sampler is perfect, at, say,
10 kHz, then you'll get two sine waves in the digitized sequence. One
at 10 samples per cycle (the 1kHz audio) and the other at 5 samples
per cycle (the
After a bit of repair and upgrading at Flex-Radio Central, I just fired
up my radio (with amp and tuner) today, and actually talked to someone
on 20 SSB!
I'm using a D44 card without an external mic preamp, and at the moment
just a cruddy hand mike I had around that happened to be wired to work
[EMAIL PROTECTED] wrote:
The current cal scheme is unlikely to ever work well for most users. The
issue
is the error in the oscillator in everyone's sound card. Without taking this
into
account, most of us can achieve very good accuracy at one WWV frequency
but will find it is way off on another.
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