Dear All,
I wonder if someone with more knowledge that I can advise me.
My F5K is still away with the supplier but I do have a Yaesu FT100 which
requires an external PSU. Obviously I have a PSU especially for that rig, a
SEC-1223, it has always been good to me. The PSU that I bought for the F5K
At 07:54 AM 7/11/2008, you wrote:
However, I did notice a strange occurrence on
the oscolloscope, with the SEC-1223Â keydown
continuous, there was just a voltage drop. But
with the W-30AM, there was oscillation between
the dropped voltage and the full voltage on continuous keydown.
Will
Cecil,
You sent:-
Will this oscillation cause my problems? I see
it as TVI/RFI and am awaiting my XYL to return
from work to get her assistance in more testing. Kind Rgds, Gwyn - G4FKH
Oscillations are not good at all. You need a
better power supply or a lot of work on cleaning that one up.
Cecil,
One thing at a time. The static test with a DVM was quick enough to prove
that one should not be using the internal DC measurement as an accurate
indication of anything truly vital, other than to say that there is a voltage
present from the power supply. The O-Scope test is a
On Jul 11, 2008, at 6:44 AM, k5nwa wrote:
At 07:54 AM 7/11/2008, you wrote:
However, I did notice a strange occurrence on
the oscolloscope, with the SEC-1223Â keydown
continuous, there was just a voltage drop. But
with the W-30AM, there was oscillation between
the dropped voltage and the
. #250
Austin, TX 78729
Phone: 512-535-4713
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Brian Lloyd
Sent: Friday, July 11, 2008 2:40 PM
To: k5nwa
Cc: flexradio@flex-radio.biz
Subject: Re: [Flexradio] TX Audio Quality Help, please!
On Jul 11, 2008, at 6
At 02:07 PM 7/11/2008, Gerald Youngblood wrote:
The finals have two 470 uF caps in paralles (940 uF) right at the PA RF
chokes and another 470 uF at the driver for a total of 1410 uF on the 13.8V
bus. That does not count a string of 0.1 uF caps in parallel.
Gerald
1000 uF isn't all that much in
How much importance should be given to this topic you ask? I respect the
fact that any audio topic these days can be very subjective and carries many
different opinions. But before you cast this topic off to the unimportant bin
consider this thought. I know several people who are holding
!
Ken
K3YI
PS: Buy the Radio!
- Original Message
From: [EMAIL PROTECTED] [EMAIL PROTECTED]
To: flexradio@flex-radio.biz
Sent: Thursday, July 10, 2008 6:33:09 AM
Subject: [Flexradio] TX Audio Quality Help, please!
How much importance should be given to this topic you ask? I respect
You all keep talking like there is a problem with the radio. I DON'T
THINK SO. I've talked to a lot of them and they all sound in verying
degrees of good. Some people have taken the time to use sound boards to
feed the radio and $$$ mics and other use what ever they have straight
in the
Oh, I forgot to add that I started using Flex in the early days with
Serial number 25 and the first version of software on the SDR1000. In
ICOM terms I'm now running a PRO MCXXVIII, and all I've purchased is ONE
NEW RADIO that keeps getting better. Jerry
@flex-radio.biz
Objet : Re: [Flexradio] TX Audio Quality Help, please!
You all keep talking like there is a problem with the radio. I DON'T
THINK SO. I've talked to a lot of them and they all sound in verying
degrees of good. Some people have taken the time to use sound boards to
feed
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Ken Danser
Sent: Thursday, July 10, 2008 6:52 AM
To: Flex Radio
Subject: Re: [Flexradio] TX Audio Quality Help, please!
Hello,
I am one who usually sits back and watch things unfold and hope to learn
from
Hi, Chris.
Only the earlier F5K's that are having problems.
Have no doubt and buy F5k. Good radio indeed.
P.S. Here RFI is mentionned as the main problem. But I have heard distortion
and with QRP...
--
Sergey RW3PS
Hi
I noted that all guys who use flex5000 have the same problems of TX
PROTECTED] On Behalf Of [EMAIL PROTECTED]
Sent: Wednesday, July 09, 2008 11:30 PM
To: Maarten
Cc: FlexRadio Reflector
Subject: Re: [Flexradio] TX Audio Quality Help, please!
Maarten, the abnormality is always there in all bandwidths in the ssb mode.
The audio in the AM mode can best be described
Quoting Gerald Youngblood [EMAIL PROTECTED], on Thu 10 Jul 2008
06:50:23 AM PDT:
Mike,
In all FlexRadio models, AM is really an amplitude modulated 11 KHz carrier
that is transmitted in SSB mode on exactly the same hardware signal chain as
the SSB signals. In other words, AM is a SSB
Dear All,
I would like to put my tuppence worth in.
Firstly, I would like to say that I thoroughly enjoy using the F5K, it is a
wonderful experience. However, there is a serious problem with at least some of
the units.
If it is only the earlier F5K’s as suggested by RW3PS, then that is
-Radio
Subject: Re: [Flexradio] TX Audio Quality Help, please!
Hi, Chris.
Only the earlier F5K's that are having problems.
Have no doubt and buy F5k. Good radio indeed.
P.S. Here RFI is mentionned as the main problem. But I have heard distortion
and with QRP...
--
Sergey RW3PS
Hi
I noted
At 05:33 AM 7/10/2008, you wrote:
How much importance should be given to this topic you ask? I respect the
fact that any audio topic these days can be very subjective and carries many
different opinions. But before you cast this topic off to the
unimportant bin
consider this thought. I know
10, 2008 9:15 AM
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]; 'Maarten'; 'FlexRadio Reflector'
Subject: Re: [Flexradio] TX Audio Quality Help, please!
Quoting Gerald Youngblood [EMAIL PROTECTED], on Thu 10 Jul 2008
06:50:23 AM PDT:
Mike,
In all FlexRadio models, AM is really an amplitude
At 08:50 AM 7/10/2008, you wrote:
Mike,
In all FlexRadio models, AM is really an amplitude modulated 11 KHz carrier
that is transmitted in SSB mode on exactly the same hardware signal chain as
the SSB signals. In other words, AM is a SSB signal on both the 1000 and
5000. AM and SSB are both
Ditto from me, I have serial number 3.
Bob K5KDN
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Tim Ellison
Sent: Thursday, July 10, 2008 9:24 AM
To: Sergey Abramov; Reflector Flex-Radio
Subject: Re: [Flexradio] TX Audio Quality Help, please
13091 Pond Springs Rd. #250
Austin, TX 78729
Phone: 512-535-4713
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Gwyn Williams
Sent: Thursday, July 10, 2008 9:16 AM
To: Flex Reflector
Subject: [Flexradio] TX Audio Quality Help, please!
Dear All,
I would
Could it be that the older HRFIO board has something to do with this ?
Not sure when the changeover between the 27 34 boards.
Possible rf issues with the older board ? Just guessing.
73's , Bruce
KL7JDR
Bruce W. Mills
P.O. Box 1500
31490 Echo Lake Road
Soldotna , Alaska
99669
I saw a similar discussion on the Kenwood site last year. The problem was
traced to corrosion on the in-line fuse holder between the power supply and
the rig.
If there are any problems on this wire like a tired fuse, corroded fuse
holder, under-sized wire, or bad soldering; the voltage in the
At 07:38 AM 7/10/2008, Gerald Youngblood wrote:
If you listen to AM in SAM mode you will be effectively listening in DSB
mode.
Gerald
The interesting question is whether, when listening to an AM signal, using a
SSB receiver, what it sounds like. (and assuming the SSB receiver has good
enough
At 08:52 AM 7/10/2008, Doug McCormack wrote:
I saw a similar discussion on the Kenwood site last year. The problem was
traced to corrosion on the in-line fuse holder between the power supply and
the rig.
If there are any problems on this wire like a tired fuse, corroded fuse
holder, under-sized
Doug,
I agree that it probably is power supply related.
In most of the comments, everyone has overlooked the fact that Jeff's radio
was sent back to Flex and thoroughly checked out, and the problem was not
found. However, nobody, including Flex, disputes the fact that there is a
problem when
This is absolutely not true
I agree this not truth.
I have simply said their own experience with this.
I have #19 from the first production run and I do NOT have the audio
distortion issue.
This three transceivers have a distortion and at present.
#0651-x
#3207-x
#4707-x
This
, July 10, 2008 12:25 PM
To: 'Doug McCormack'; flexradio@flex-radio.biz
Subject: Re: [Flexradio] TX Audio Quality Help, please!
Doug,
I agree that it probably is power supply related.
In most of the comments, everyone has overlooked the fact that Jeff's radio
was sent back to Flex and thoroughly
, July 10, 2008 12:25 PM
To: 'Doug McCormack'; flexradio@flex-radio.biz
Subject: Re: [Flexradio] TX Audio Quality Help, please!
Doug,
I agree that it probably is power supply related.
In most of the comments, everyone has overlooked the fact that Jeff's radio
was sent back to Flex
-radio.biz
Subject: Re: [Flexradio] TX Audio Quality Help, please!
Some time ago I looked at power supply variation (using a scope), and I didn't
see anything abnormal when comparing my 1K to my 5K (there was some small
variation under load) , both of which run off of the same supply (Astron
RM-35
I can pick out a Flex 5000 audio at least 4 out of 5 times. I proved
that when K6JCA ran a test. I would have caught the 5th one but
conditions deteriorated and it was difficult to hear the signal in its
totality. There is something definitely wrong going on with the rig as
concerns the audio.
On Jul 9, 2008, at 6:18 PM, [EMAIL PROTECTED] wrote:
I can pick out a Flex 5000 audio at least 4 out of 5 times. I proved
that when K6JCA ran a test. I would have caught the 5th one but
conditions deteriorated and it was difficult to hear the signal in its
totality. There is something
9:18 PM
To: FlexRadio Reflector
Subject: Re: [Flexradio] TX Audio Quality Help, please!
I can pick out a Flex 5000 audio at least 4 out of 5 times. I proved
that when K6JCA ran a test. I would have caught the 5th one but
conditions deteriorated and it was difficult to hear the signal in its
To: FlexRadio Reflector
Subject: Re: [Flexradio] TX Audio Quality Help, please!
I can pick out a Flex 5000 audio at least 4 out of 5 times. I proved
that when K6JCA ran a test. I would have caught the 5th one but
conditions deteriorated and it was difficult to hear the signal in its
Hi All,
I have bought several transceivers Flex5000 for russian ham from the first
running and at present.
And I want to say, all transceiver made before April of the month had and have
problems SSB TX Audio.
New Flex5000 made after April, without problems, have clean and clear sound TX.
My
It not just Jeff. I'm one of the guys who've been listening to the
various audio tests. We first noticed something funny in someone
else's 5000 before Jeff even got his. We ran experiment after
experiment. This guy finally returned his for a refund. Then another
fellow (not in the
On Jul 8, 2008, at 12:18 PM, K6JEK wrote:
It not just Jeff. I'm one of the guys who've been listening to the
various audio tests. We first noticed something funny in someone
else's 5000 before Jeff even got his. We ran experiment after
experiment. This guy finally returned his for a
Thank you
Someone else can hear.
I was beginning to wonder.
On Tue, 2008-07-08 at 12:18 -0700, K6JEK wrote:
It not just Jeff. I'm one of the guys who've been listening to the
various audio tests. We first noticed something funny in someone
else's 5000 before Jeff even got his. We ran
Hi Brian,
I've run THD (on the analog signals) and IMD (on the RF signals). What
I hear correlates strongly with IMD levels at lower powers (where much
of our voice energy is) when compared between 5K driver, 5K final, and a
1k. Correlation does not mean causality, but...no one has yet come
Hi Jeff,
I do not have a 5000, but it sounds as if you can set the bias on the PA
transistors with software. If that is the case, have you checked that
the quiescent current is really what it is supposed to be for the
transistors that are in the PA. If you have more distortion at lower
Jeff --
Is there any chance you have saved the original recordings as WAVEs,
including the source files? If so, can you post them as 48kHz
flac-compressed?
The mp3 encoding and then re-expansion to 44.1kHz rather than 48 introduce
an array of spectral distortions all on their own.
73 and thanks
I was tuning the low end of 75 the other night and came to the conclusion we
replaced a empty CW band with an empty SSB band. I think any activity is
warranted.
73 W9OY
___
FlexRadio Systems Mailing List
FlexRadio@flex-radio.biz
Hi Frank,
Thanks for the reply! I can probably post any sort of format, but you
may have to help me out a bit - I don't know what flac-compression is.
The original Flex WAV files (recorded at 96 ksps) are on the order of 10
MB each. To get them down to a reasonable size and to record two
Hi Jeff,
I've heard another flex 5000 user sound like that. It has almost a digital
processed type sound. A group of Flexers in my area use W2IHY Boxes for better
sound, especially with the PR40 although personally I don't feel that hardware
should be required to make a software radio sound
PROTECTED]
Subj: Re: [Flexradio] TX Audio Quality Help, please!
Date: Mon Jul 7, 2008 1:32 pm
Size: 3K
To: Frank Brickle [EMAIL PROTECTED]
cc: Reflector Flex-Radio flexRadio@flex-radio.biz
Hi Frank,
Thanks for the reply! I can probably post any sort of format, but you
may have to help me
At 12:27 PM 7/7/2008, you wrote:
I was tuning the low end of 75 the other night and came to the
conclusion we replaced a empty CW band with an empty SSB band. I
think any activity is warranted.
73 W9OY
I have always wondered when I read articles talking about crowded
conditions on 75M, my
Are you talking about the distortion that's inherent in the 5000 ?
I've heard that it's a problem with the DAC in the soundcard.
I don't believe the 5000 will be an audio aficionados radio in it's
present state.
The 1000 doesn't seem to have this problem (at least not with the
firebox or fa66)
Anderson
Sent: Monday, July 07, 2008 1:31 PM
To: Frank Brickle
Cc: Reflector Flex-Radio
Subject: Re: [Flexradio] TX Audio Quality Help, please!
Hi Frank,
Thanks for the reply! I can probably post any sort of format, but you
may have to help me out a bit - I don't know what flac-compression
I completely disagree. I have both radios, and the TX from both sounds
superb using the Behringer UB-802 as a mic preamp only (no EQ) into the
Line In on the 5K, and the Heil PR-40, with the EQ handled by PowerSDR.
A few seconds listening to John, W5GI on his FLEX-5000 might convince you...
Jimmy,
I've used both the Delta-44 and the FA-66 with the 1000. As for the 5K,
I can only judge by the ones I've heard on the air and my own, and
whether I use a PR-40 or an HC5 cartridge, it sounds very good, with no
trace of audible distortion. I listened to Jeff's recording and I agree
Subject: [Flexradio] TX Audio Quality Help, please!
Some friends of mine and I often meet on 80 meters to operate in
wideband audio mode (4k to 5k audio) on SSB. (Yes, I know that this
isn't recommended operating practice,but we do it early in the evening
before the band becomes occupied, so
Thanks to everyone for their replies and suggestions.
To answer some of the questions I've received...
1. I've run IMD tests on both the 1K and the 5K and at various powers
(3 dB steps).
2. The problem seems to be independent of code version.
3. All tests are made into a dummy load.
4.
On Mon, Jul 7, 2008 at 6:46 PM, Jeff Anderson [EMAIL PROTECTED] wrote:
5. I don't run the compandor or compressor. And I keep the mic signal
below 0 dB.
Regardless, there's about 6dB of compression on the distorted versions, in
all three runs. It's impossible to miss if you look at
Jeff,
FWIW, I was never able to make the balanced input work with my PR-40. I
always ended up with extra grunge in the audio. When I use the standard
microphone input on the front panel it worked much better, but the
arrangement that produces the best audio for me is to use the Line In
jack
To answer some recent questions...
Frank, I agree, I'm sure the distortion is not in the ADC/DAC components
(nor software, nor input stages) either, because I don't hear it at the
5K PA's *driver stage* output, which is well after the output DAC (ref:
1st half of 6 July recording). The
On Mon, Jul 7, 2008 at 7:30 PM, Jeff Anderson [EMAIL PROTECTED] wrote:
Frank, I agree, I'm sure the distortion is not in the ADC/DAC components
(nor software, nor input stages) either, because I don't hear it at the
5K PA's *driver stage* output, which is well after the output DAC (ref:
1st
I agree, it's peculiar. But again - if it's a leveler issue (i.e.
software) I'd expect to hear it at the PA driver, too. But I don't (but
perhaps others do? Ref: 1st half of 6 July test). By the way, I just
checked, and the Leveler has been OFF (box not checked) for all of my
tests. The
59 matches
Mail list logo
