In a recent message, Ron D'Eau Claire [EMAIL PROTECTED] wrote ...
One of the important activities we Hams participate in is experimenting with
various signal formats (or modes if you prefer). Fortunately, our licenses
in most countries give us a lot of latitude about what is legal. Certainly
the
Ron D'Eau Claire wrote:
Note that there are *NO* FCC rules about the bandwidth of an SSB (or other)
signal that say a certain bandwidth is illegal.
I would certainly agree with others that 6kHz SSB would be a
contravention of the UK licence, although it might only be a SHOULD
violation,
Note that there are *NO* FCC rules about the bandwidth of an SSB (or other)
signal that say a certain bandwidth is illegal.
Maybe not - I wouldn't know.
However, here in DL ESSB and classical AM are illegal below 28MHz.
The maximum allowed bandwidth between 1.81Mhz and 28MHz in the HAM bands
Interesting...
What is the definition of ESSB, anything greater than 2.7kHz? My
Orion2 can do up to 3000 I believe, so is this ESSB?
On 8/12/07, Toby Deinhardt [EMAIL PROTECTED] wrote:
Note that there are *NO* FCC rules about the bandwidth of an SSB (or
other)
signal that say a certain
The SSB bandwidth 2007 realities, sound familiar.
In 1978 - max bandwith over telephonic modems,
and conditioned ATT lines was like 6250 baud.
A limit everyone agreed.
Then some clever soul or group, came up with
quadrature modulation - and rather quietly,
modems into the hot-copper telephone
ESSB is just dreadful and like in Germany is probably not legal in EI
where our rules seem to define SSB as 2.7 Khz or less .
However is the k3 capable of ECW (enhanced CW)? I would like some nice
wide clicks and a 'phat' rough tone to help me keep some space around me
in a contest and stand out
In a message dated 8/12/07 8:39:25 AM Eastern Daylight Time,
[EMAIL PROTECTED] writes:
What is the definition of ESSB, anything greater than 2.7kHz? My
Orion2 can do up to 3000 I believe, so is this ESSB?
No.
THere's no hard-and-fast defintion of ESSB that I've seen. In practice, it
I had the DSP units in my K2's that I sold and have this left over. It
is assembled and works fine. I will ship and insure it US Priority mail
for $65
Thanks
Tim
NZ8J
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Fred (FL) wrote:
The SSB bandwidth 2007 realities, sound familiar.
Yes, this sort of false reasoning is common in marketing. They rely on
a perception that anything new to the market must be better, and that
the general public doesn't understand the true reasons for limitations.
In 1978
I don't think ESSB is the spawn of Satan, but I'd encourage people who
want to experiment with high fidelity to do digital voice instead and
experiment with digital compression techniques. It seems to me that
creating ESSB isn't much of a challenge. Open up your filtering on the
IF chain and
Hi Brandon:
I'm pretty sure we've managed to work out all of the T3 through T7 'qualities'
of the K3... right now, it's as clean as any rig I've ever heard.
73,
Tom N0SS
At 07:47 08/12/2007, Brendan Minish wrote:
ESSB is just dreadful and like in Germany is probably not legal in EI
where
Fred (FL) wrote:
In 1978 - max bandwith over telephonic modems,
and conditioned ATT lines was like 6250 baud.
A limit everyone agreed.
Shannon's classic paper on communications theory was published in 1948,
so, for 30 years before 1978, anyone who knew the signal to noise ratio
and did the
This will be my last post on the ESSB subject ... the
thread -IS- pretty far off-topic. (:-))
My association with ESSB came during five years and a
million miles of over-the-road-truck driving with an HF rig in
the truck that I used to pass the time. I spent MANY hours
observing the group on
On Sun, 12 Aug 2007 [EMAIL PROTECTED] wrote:
Why can't I run FM voice that's 15 or 20 kHz wide on 75 meters? I think it
would sound really, really good. Much better than even AM, and immune to summer
QRN. The transmitter would be very efficient, modulated at low level and
amplified in highly
This will be my last post on the ESSB subject ... the
thread -IS- pretty far off-topic. (:-))
My association with ESSB came during five years and a
million miles of over-the-road-truck driving with an HF rig in
the truck that I used to pass the time. I spent MANY hours
observing the group on
Problem solved. I'd like to report the cause and suggest a signal
tracing method that might be helpful to someone without much test
equipment.
First, though, I'd like to thank WA6VNN and LA1PHA for their
suggestions, and of course thank Don, W3FPR, for his customary fast
response and
On Sun, 12 Aug 2007, Dale Putnam wrote:
Can you see it now? Since all the bandwidth is used up on 75, and the
digital/cw crowd has
learned to live in a smaller space, and they don't make much noise, or take up
a lot of room, they can learn to live in less, this month, less next month, and
Neat solution, Dick!
A common approach used by O.T.s was a signal injection probe, either audio
or wide-band RF noise. It was used to insert a signal at either audio or RF
starting at the final audio output and working back toward the antenna
input, stage by stage, until the signal disappeared or
In a message dated 8/12/07 12:32:56 PM Eastern Daylight Time,
[EMAIL PROTECTED] writes:
On Sun, 12 Aug 2007 [EMAIL PROTECTED] wrote:
Why can't I run FM voice that's 15 or 20 kHz wide on 75 meters? I think it
would sound really, really good. Much better than even AM, and
immune to summer
In a message dated 8/12/07 8:47:15 AM Eastern Daylight Time,
[EMAIL PROTECTED] writes:
The SSB bandwidth 2007 realities, sound familiar.
In 1978 - max bandwith over telephonic modems,
and conditioned ATT lines was like 6250 baud.
A limit everyone agreed.
But was it a theoretical limit, or
As a CW op with no dog in this race, I wonder what makes splashing a 2.1 KHz
to 2.7 KHz wide voice signal across the band morally right but 6 KHz or more
morally wrong. Are those who are opposed to 6 KHz-wide SSB doing everything
they can to narrow their bandwidth down to as few hz as possible?
Please see the K3 FAQ on ESSB.
73
Greg
AB7R
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Fred (FL)
Sent: Saturday, August 11, 2007 7:35 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] ESSB from a K3
Evidently, the K3 does not support ESSB, or for
Also, see the specs...4 kHz max.
(Subject to change.)
http://www.elecraft.com/K3/K3_specs.htm
RayK3RIZ
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On Sun, 12 Aug 2007, Craig Rairdin wrote:
(Sorry, I argue religion for a living)
Although it's off topic, I wonder how many angels can operate QRP on the head of
a pin?
73 k3hrn
Thom,EIEIO
Email, Internet, Electronic Information Officer
www.baltimorehon.com/Home of
I'd like to know more about the K3's DSP engine and if it's powerful enough to
do a G4GUO type codec.
I'm not smart enough to make an estimate about the needed processing power
partly because I don't know what the rig is capable of, and partly because I
haven't played with a vocoder that does
Good evening Elecrafters,
I have for sale the following:
K2 #755 w/finger dimple
KPA-100
KSB2
K160RX
KNB2
N-Gen
XG1
K2 Nifty Mini Manual
This K2 has been updated to the current K2 configuration regarding
Firmware levels, K2 Keying Bandwidth Mod Kit, K2 Temperature Compensated
PLL Reference
On Sun, 12 Aug 2007 [EMAIL PROTECTED] wrote:
Marvelous idea...logical too...and flies in the face of operating
efficiently.
How so? The transmitter would be more efficient. If it's OK to use 6 to 9 kHz
for ESSB, why not 15 or 20 kHz for FM?
Ah good point...and once 20 kHz is established, we
I don't understand why anyone would get upset or even care
about essb (or AM), if its done on a band that is not packed
with signals.
If there is loads of space, what is wrong with making the audio
sound at least as good as a cheap cell phone?
On the AM side, on the east coast of the US, the AM
Good Evening,
Another fun Sunday evening. Twenty meters had QSB, deep at times,
while forty had its QRN and some fading. Both gave decent results
though. My last check in (K6PJV) reminded me of something: I need to ask
the ARES folks for NCS certification. I may have qualified by
Don,
I replaced D16 and D17 which fixed the HI CUR, HI REFL messages and lack of
power control.
However, I am still reading a low output voltage from the high voltage bias
supply. When receiving, the high bias supply voltage at D1 cathode and
R12/R11 is about 67 volts.
I've further
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