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Old May 5th 05, 08:09 PM
Jim Hampton
 
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"Dave Hall" wrote in message
...
On Wed, 4 May 2005 19:29:25 -0400, (I
AmnotGeorgeBush) wrote:

From:
(Freeband sucks)

where can we find one?



The technology is there,,you just have to -learn- it. Tell you
what,,think about part 15 transceivers,,,,think about chips,..... now
think about different modes,,outside the box....think about
UHF.....now,,,if you still are confused, please explain why automatic
hopping of freqs on the freeband is such a difficult concept for you.
Since you can't seem to grasp this idea, forget about even casually
mentioning digital sequencing to you,,,,you'd win the pool!!! : )



I've been watching this topic with some interest. IMHO the only true
method of SS is the direct sequencing method. Frequency hopping sort
of "cheats" the concept of a wideband and barely distinguishable SS
system. Direct sequence is also more secure than FH.

Nonetheless, frequency hopping is considered spread spectrum in
today's marketplace.

As far as using SS on 11 meters, well...... First off, there are no
commercial CB radios made with this technology. Even hams have been
slow to embrace it. That's not to say that enterprising experimenters
have not played with it on 11 meters. Utilizing cordless phones and
transverters might yield satisfactory results. I'm sure there may be a
few that have. But it's hardly in widespread use.

Dave
"Sandbagger"
http://home.ptd.net/~n3cvj


Hello, Dave

The problem would be SWR with the requisite bandwidth. Of course, if anyone
has any of those old Heathkit Cantennas

There is a thought. 1.1 to 1 SWR from something like zero to 30 MHz. Not
bad somewhat above too; just add oil and turn on your amplifier LOL.


Best regards from Rochester, NY
Jim - cooking at 3 megabaud



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Old May 6th 05, 12:04 AM
Steveo
 
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"Jim Hampton" wrote:
There is a thought. 1.1 to 1 SWR from something like zero to 30 MHz.
Not bad somewhat above too; just add oil and turn on your amplifier LOL.

Sparrow never tasted so good.
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Old May 6th 05, 04:42 AM
Landshark
 
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"Steveo" wrote in message
...
"Jim Hampton" wrote:
There is a thought. 1.1 to 1 SWR from something like zero to 30 MHz.
Not bad somewhat above too; just add oil and turn on your amplifier LOL.

Sparrow never tasted so good.


Is that an African Sparrow carrying a coconut?

Landshark


--
Treat people as if they were what
they ought to be and you will help
them become what they are capable
of becoming.


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Old May 6th 05, 01:23 PM
Frank Gilliland
 
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On Thu, 05 May 2005 18:09:39 GMT, "Jim Hampton"
wrote in :

snip
Hello, Dave

The problem would be SWR with the requisite bandwidth. Of course, if anyone
has any of those old Heathkit Cantennas



Or a discone. That's one of the preferred commercial antennas for SS
on VHF/UHF. SWR isn't flat but it's low over a 10:1 range of spectrum.
The only problem is the poor gain. I wonder if anyone has ever tried
to build a phased discone array.....







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Old May 5th 05, 08:23 PM
I AmnotGeorgeBush
 
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From: (Dave=A0Hall)
On Wed, 4 May 2005 19:29:25 -0400,
(I
AmnotGeorgeBush) wrote:
From:
(Freeband=A0sucks)
where can we find one?
-
The technology is there,,you just have to -learn- it. Tell you
what,,think about part 15 transceivers,,,,think about chips,..... now
think about different modes,,outside the box....think about
UHF.....now,,,if you still are confused, please explain why automatic
hopping of freqs on the freeband is such a difficult concept for you.
Since you can't seem to grasp this idea, forget about even casually
mentioning digital sequencing to you,,,,you'd win the pool!!! : )

I've been watching this topic with some


interest. IMHO the only true method of SS is


the direct sequencing method.



Yea,,that's what i meant when I said "digital" sequencing.

Frequency


hopping sort of "cheats" the concept of a


wideband and barely distinguishable SS


system.





Yea,,I guess it could be seen that way,,,but,,why couldn't the
technology be programmed to hop "wider" (for lack of a better term at
the moment)?


Direct sequence is also more secure than FH.



I'm not up on the latest encryption technique regrading this technology,
but take your word for it. But,,,why would a direct sequence (definite
pattern) be more secire than a random pattern?


Nonetheless, frequency hopping is considered
spread spectrum in today's marketplace.



Yep it is.

As far as using SS on 11 meters, well...... First
off, there are no commercial CB radios made


with this technology.




I never said there was. I said the technology was there and blew a
gasket in a certain poster's gray matter and now he is all wrapped up in
himself blathering incoherently about a cb radio when I referred the
freeband.

Even hams have been slow to embrace it.


That's not to say that enterprising


experimenters have not played with it on 11


.meters.




BINGO!

Utilizing cordless phones and transverters


might yield satisfactory results. I'm sure there


may be a few that have. But it's hardly in


widespread use.


Agreed.


Dave


."Sandbagger"


n3cvj




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