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  #211   Report Post  
Old March 9th 15, 07:29 PM posted to rec.radio.amateur.equipment
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Default What is the point of digital voice?

In rec.radio.amateur.equipment Jerry Stuckle wrote:

snip

Oh, you mean the argumentative troll who has his head so far up his arse
he can see his tonsils?


Yeah sure, everyone that disagrees with you is a troll.

Yeah sure, your credentials are better than anyone that disagrees with you.

Yeah sure, your references are better than those of anyone that disagrees
with you.

I killfiled him weeks ago. He's even worse than you.


Yeah sure.


--
Jim Pennino
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Old March 15th 15, 10:26 PM posted to uk.radio.amateur,rec.radio.amateur.equipment
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Default What is the point of digital voice?

On 3/6/2015 1:12 PM, gareth wrote:
"John Davis" wrote in message
...
On 2/25/2015 5:37 PM, gareth wrote:

Here is your big chance to prove your superiority of knowledge about
the super-regrenerative method, but you've gone strangely silent, which
is a bit bizarre when you consider how many times you have oft
repeated your childish sneer?


Perhaps you will listen to the voice of expierence.

My first receiver was a Knight Kit Star Roamer.. now this is a superhet,
true, but as it turns out it had a REGEN control in one stage, that stage
could be made super regenerative,, You used this to receive CW or SSB,, i
used that radio for many years.


I fear that you will be incorrect and confusing regeneration and
super-regeneration.


No... I'm not.... I do know the difference. Had a Super Regen for VHF as
well.

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Old March 15th 15, 10:27 PM posted to uk.radio.amateur,rec.radio.amateur.equipment
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Default What is the point of digital voice?

On 3/6/2015 3:03 PM, Michael Black wrote:
On Fri, 6 Mar 2015, gareth wrote:


I almost missed it. No, he's talking about a superhet with standard
455Khz IF, where some feedback was added around an IF stage (usually a
"gimmick" capacitor so one can adjust it), and with control of the
cathode, one could increase selectivity and put it into oscillation so
there was something to beat against the incoming signals to demodulate
CW and SSB. But that's really just a more complicated method of
regeneration and superregeneration.




You sir... Are correct.
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Old March 15th 15, 10:32 PM posted to uk.radio.amateur,rec.radio.amateur.equipment
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Default What is the point of digital voice?

On 3/6/2015 1:06 PM, John Davis wrote:
On 2/26/2015 3:55 AM, AndyW wrote:


With digital you are there, or you are not, and "There" means it sounds
like you are sitting beside me. (Perhaps that is why I operate SSB, I
like to keep the skills honed a bit).


I just got my Digital equipment back in operating condition (Had several
issues, New computer lacked an AUDIO IN jack (Now have a dongle) Dongle
needed audio on the RING, not the TIP, I had used a mono plug (no ring)
Bad transformer (replaced with a better one)

When I say JUST... I mean yesterday

But back before the old computer died this is what I observed with
digital text

1: Signals I Could not hear (and I have good hearing) It could often decode.

2: Most signals either decoded...Or not... But sometimes.... IT was broken.


From other expierence, both with digital video and audio

As the signal degrades with analog it is 10,9,8,7 and so on

With Digital it is 10,10,10,10,10,10,10,5,0

(NOTE: Number of 10's is not to scale)
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Old March 15th 15, 10:40 PM posted to uk.radio.amateur,rec.radio.amateur.equipment
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Default What is the point of digital voice?

On 3/6/2015 3:11 PM, Jerry Stuckle wrote:

Both MP3 and CD use 16/44 (16 bits, 44kHz sample rate) formats. The
difference is that the CD will have the entire signal stored, while MP3
will remove some of the signal which is not as important as others.



You are partially right.. CD uses a specific sample rate and bit size,
And I believe you are correct as to what they are

MP3 can use a very wide range of sample rates, and different bit sizes
as well.... Crank the bit rate and sample size up enough and yes, I am
not going to be able to tell the difference. (A golden ear I'm not).

But the bandwith needed goes way up.

Some "Cred"info..My daughter, in whom I am well pleased, IS, among other
things, a Classical Musician and music teacher...In the past I have been
her "Recording Engineer" I also do recording in other venues as well...
Usualy ATRAC, but sometimes CD quality.

I have played a lot with Bit Rates, sample sizes and sample rates.using
Total Recorder PRO and the LAME codec.

Fun Fact: Remember Spaceship One, the one that won the X-Prize? Well,
Dr Space (David Livingston) complained during the first flight about
having to change cassettes in his audio recorder... I tossed Total
Recorder on the job and within minutes of the program end he had an MP3
in his mail box.

Next flight he mentioned his new log recorder (Total Recorder PRO) and
credited me with the suggestion.

I have hundreds (IF not thousands) of hours of live recordings lying
about here.

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  #217   Report Post  
Old March 15th 15, 11:57 PM posted to uk.radio.amateur,rec.radio.amateur.equipment
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Default What is the point of digital voice?

"John Davis" wrote in message
...
On 3/6/2015 1:12 PM, gareth wrote:
"John Davis" wrote in message
...
On 2/25/2015 5:37 PM, gareth wrote:

Here is your big chance to prove your superiority of knowledge about
the super-regrenerative method, but you've gone strangely silent, which
is a bit bizarre when you consider how many times you have oft
repeated your childish sneer?

Perhaps you will listen to the voice of expierence.

My first receiver was a Knight Kit Star Roamer.. now this is a superhet,
true, but as it turns out it had a REGEN control in one stage, that
stage
could be made super regenerative,, You used this to receive CW or SSB,,
i
used that radio for many years.


I fear that you will be incorrect and confusing regeneration and
super-regeneration.


No... I'm not.... I do know the difference. Had a Super Regen for VHF as
well.


So, if the Knight Kit could also go into super-regeneration, how was the
quenching achieved?


  #218   Report Post  
Old March 16th 15, 08:30 PM posted to uk.radio.amateur,rec.radio.amateur.equipment
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Default What is the point of digital voice?

On Sun, 15 Mar 2015, gareth wrote:

"John Davis" wrote in message
...
On 3/6/2015 1:12 PM, gareth wrote:
"John Davis" wrote in message
...
On 2/25/2015 5:37 PM, gareth wrote:

Here is your big chance to prove your superiority of knowledge about
the super-regrenerative method, but you've gone strangely silent, which
is a bit bizarre when you consider how many times you have oft
repeated your childish sneer?

Perhaps you will listen to the voice of expierence.

My first receiver was a Knight Kit Star Roamer.. now this is a superhet,
true, but as it turns out it had a REGEN control in one stage, that
stage
could be made super regenerative,, You used this to receive CW or SSB,,
i
used that radio for many years.

I fear that you will be incorrect and confusing regeneration and
super-regeneration.


No... I'm not.... I do know the difference. Had a Super Regen for VHF as
well.


So, if the Knight Kit could also go into super-regeneration, how was the
quenching achieved?

By the same means it happened by accident when Armstrong was playing with
regen receivers.

Most discussion of superregens has the same tube doing the receiving and
quenching. That tends to confuse the operation of the scheme, and like I
said, eventually the ARRL Handbook description of the superregen devolved
to explaining how the tube could quench.

The right components and that regen receiver can be a superregen receiver.
And like I said, it can be both, just picking components so the regen
control can get some regeration (for improved selectivity), turn into an
oscillator (for beating against incoming signals) and then a bit more and
it goes into superregeneration.

Like I said, superregeneration is just an addition to regeneration, a
useful feature since it makes operation much less fussy (no need to
constantly ride the regen control), but nevertheless just an extension of
the basic concept of regeneration.

Michael

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Old March 16th 15, 10:48 PM posted to uk.radio.amateur,rec.radio.amateur.equipment
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Default What is the point of digital voice?

"Michael Black" wrote in message
news:alpine.LNX.2.02.1503161526020.18553@darkstar. example.org...

Like I said, superregeneration is just an addition to regeneration, a
useful feature since it makes operation much less fussy (no need to
constantly ride the regen control), but nevertheless just an extension of
the basic concept of regeneration.


So, let's say that you are listening to a weak CW signal, you turn up the
regen control until you get super-regen, at which point the CW signal
disappears because the CIO effect has now been shifted out to the sidebands
created by the quenching?


  #220   Report Post  
Old March 16th 15, 11:14 PM posted to uk.radio.amateur,rec.radio.amateur.equipment
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Default What is the point of digital voice?

In rec.radio.amateur.equipment gareth wrote:
"Michael Black" wrote in message
news:alpine.LNX.2.02.1503161526020.18553@darkstar. example.org...

Like I said, superregeneration is just an addition to regeneration, a
useful feature since it makes operation much less fussy (no need to
constantly ride the regen control), but nevertheless just an extension of
the basic concept of regeneration.


So, let's say that you are listening to a weak CW signal, you turn up the
regen control until you get super-regen, at which point the CW signal
disappears because the CIO effect has now been shifted out to the sidebands
created by the quenching?


Nope.

http://en.wikipedia.org/wiki/Regener...ative_receiver


--
Jim Pennino
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