"John Smith" wrote in
:

driver42:

Well, without seeing the webpage you are referring to (URL), I am just
making an educated guess, I would think it would...

John

"driver42" wrote in message
5...
"John Smith" wrote in
:

driver42:

As a side note, most antennas can handle a 100 watts without
problem, however, if you are going to run BIG POWER, it would be
good to check the specs on the antenna(s) and make sure they will
not be damaged by large power input...

John

"driver42" wrote in message
5...
"John Smith" wrote in
:

driver:

If the swr is over a 2 to 1, you get into danger of damaging the
output finals in the equipment, will also decrease your range.

There is always a method to decrease (tune adjust) swr...

John

"driver42" wrote in message
5...
Hi,
If I'm not able to set the SWR in the trucks that I drive will it
hurt the radio or just give me decreased range?




My problem is that I'll be moving from truck to truck so I wont
have time to set the SWR correctly. Most of our trucks have factory
installed double antenna's which I'm not too thrilled about.




Thanks for your input. I dont want a "big" radio. I just want a
quality radio. I'm looking at either the PC68ELITE or the PC78ELITE
both from Uniden. I had a PC68 about ten years ago that I had tweeked
and it was a great unit. I was just on a CB site and I seen that they
sell a box that lets you set the SWR from your seat without touching
the antenna. The box is plugged inbetween your radio and antenna and
then you just use your SWR meter plus the knobs on the box to adjust
to the desired level that you want. Are these things any good or are
they a gimmick? Thanks,
Driver42




John,

I just was reading about this radio.
http://www.galaxyradios.com/cb/959.html
says it has an "Automatic SWR Circuit (no complicated calibration
procedure)" Does that mean the circuit sets the SWR automatically?
Thanks for your help

I just was reading about this radio.
http://www.galaxyradios.com/cb/959.html
says it has an "Automatic SWR Circuit (no complicated calibration
procedure)" Does that mean the circuit sets the SWR automatically?


No. It means that it will read the SWR ratio without you having to
manually calibrate the meter. It does not correct the problem if there
is one.

If you move the radio from location to location just check the
reading. If it's 2:1 or lower don't worry about it.

wrote in :


I just was reading about this radio.
http://www.galaxyradios.com/cb/959.html
says it has an "Automatic SWR Circuit (no complicated calibration
procedure)" Does that mean the circuit sets the SWR automatically?


No. It means that it will read the SWR ratio without you having to
manually calibrate the meter. It does not correct the problem if there
is one.

If you move the radio from location to location just check the
reading. If it's 2:1 or lower don't worry about it.


Thanks,
I have an SWR meter from radio shack that I've used in the past. I know how
to use it. My problem is that I'll be in a different truck everyday and
wont be able to set the SWR the way I want to. On Monday I'm gonna call the
cb shop that I saw online and ask them about the SWR match box. Below is a
cut and paste of this product. Let me know if this will set the SWR without
having to mess with the antenna's.

"Don't "Live with" High SWR Readings! This Matcher will tune your SWR very
low, simply insert inline between radio & Antenna. Has 2 Adjustment knobs.
Perfect for Radios with wide channel coverage, indoor antennas, non-tunable
mobile antennas, or for using 10 thru 12 meters off 1 antenna. Handles 80w
pep. Requires either an SWR meter built into radio, or an optional SWR
meter between Radio & Matcher."

Thanks,
I have an SWR meter from radio shack that I've used in the past. I know how
to use it. My problem is that I'll be in a different truck everyday and
wont be able to set the SWR the way I want to. On Monday I'm gonna call the
cb shop that I saw online and ask them about the SWR match box. Below is a
cut and paste of this product. Let me know if this will set the SWR without
having to mess with the antenna's.

"Don't "Live with" High SWR Readings! This Matcher will tune your SWR very
low, simply insert inline between radio & Antenna. Has 2 Adjustment knobs.
Perfect for Radios with wide channel coverage, indoor antennas, non-tunable
mobile antennas, or for using 10 thru 12 meters off 1 antenna. Handles 80w
pep. Requires either an SWR meter built into radio, or an optional SWR
meter between Radio & Matcher."

Don't be anal about SWR. If you have an SWR of between 1.5 to 2,
don't worry about it. If you must have 1.0:1 on every channel,
you'll need a tuner to "fix" it. SWR is a ratio of impedance.
It is only one of a multitude of important parameters. I like high
field strength. It shows you how well your antenna is radiating.

If you move the radio from location to location just check the
reading. If it's 2:1 or lower don't worry about it.


Thanks,
I have an SWR meter from radio shack that I've used in the past. I know how
to use it. My problem is that I'll be in a different truck everyday and
wont be able to set the SWR the way I want to. On Monday I'm gonna call the
cb shop that I saw online and ask them about the SWR match box. Below is a
cut and paste of this product. Let me know if this will set the SWR without
having to mess with the antenna's.

"Don't "Live with" High SWR Readings! This Matcher will tune your SWR very
low, simply insert inline between radio & Antenna. Has 2 Adjustment knobs.
Perfect for Radios with wide channel coverage, indoor antennas, non-tunable
mobile antennas, or for using 10 thru 12 meters off 1 antenna. Handles 80w
pep. Requires either an SWR meter built into radio, or an optional SWR
meter between Radio & Matcher."

This is a line flattener. They can be problematic in that one of the
knobs can be bumped and give you an abnormally high SWR reading.
Much higher than the antenna itself.

You also will double the possibility of a loose coax connector, and
don't forget that moving the setup will require more time and care.

On Sat, 30 Jul 2005 23:54:05 -0400, wrote in
:


If you move the radio from location to location just check the
reading. If it's 2:1 or lower don't worry about it.


Thanks,
I have an SWR meter from radio shack that I've used in the past. I know how
to use it. My problem is that I'll be in a different truck everyday and
wont be able to set the SWR the way I want to. On Monday I'm gonna call the
cb shop that I saw online and ask them about the SWR match box. Below is a
cut and paste of this product. Let me know if this will set the SWR without
having to mess with the antenna's.

"Don't "Live with" High SWR Readings! This Matcher will tune your SWR very
low, simply insert inline between radio & Antenna. Has 2 Adjustment knobs.
Perfect for Radios with wide channel coverage, indoor antennas, non-tunable
mobile antennas, or for using 10 thru 12 meters off 1 antenna. Handles 80w
pep. Requires either an SWR meter built into radio, or an optional SWR
meter between Radio & Matcher."

This is a line flattener.


.....oh brother, more voodoo CB terminology.

If the line has standing waves on it then it isn't flat, and no
matching device on the radio end can reduce or eliminate the line-load
mismatch causing the standing waves. The only "line flattener" is a
LOAD impedance that matches the LINE impedance. You can't do that at
the radio.


They can be problematic in that one of the
knobs can be bumped and give you an abnormally high SWR reading.
Much higher than the antenna itself.


Or the antenna can hit a tree and fall off, or the coax could get
jammed in the door, or the radio's power leads could be accidently
shorted by a sharp edge under the dash.......


You also will double the possibility of a loose coax connector, and
don't forget that moving the setup will require more time and care.


Oh, the turmoil of it all! So why even bother using the CB in the
first place if there's going to be the possibility of a problem? If
you want to discourage the guy from using a matching device then at
least give him some -valid- reasons. Like, you probably won't notice
any difference if the SWR is 3:1 and not 1:1, or that the importance
of SWR is moot when compared to field strength, or that any matching
device isn't going to accomplish squat with a cigarette-lighter radio
and a mag-mount antenna.

This isn't exactly a performance rig, and the fact is that SWR isn't
going to tell you anything -- if you manage to get it to 1:1 you'll
get a warm-fuzzy, but that's about it. Just plug it in and talk. If
someone hears you, great. If they don't, there's probably nothing you
can do short of a full and proper install that will get you heard.







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Frank:

Yep. The good old "hair splitters" come crawling out now. Fact is, and he
made them clear!, the company has the antenna and coax, it is a give, he will
switching trucks, no time and doesn't wanna pay shop fees with every run, load,
etc...

The match box is fine, guarantees he will not generate a bunch of shop costs...

Any sensible person knows it is a no brainer...

He doesn't want to get a damn engineering degree, he wants to use it...
John

"Frank Gilliland" wrote in message
...
On Sat, 30 Jul 2005 23:54:05 -0400, wrote in
:


If you move the radio from location to location just check the
reading. If it's 2:1 or lower don't worry about it.


Thanks,
I have an SWR meter from radio shack that I've used in the past. I know how
to use it. My problem is that I'll be in a different truck everyday and
wont be able to set the SWR the way I want to. On Monday I'm gonna call the
cb shop that I saw online and ask them about the SWR match box. Below is a
cut and paste of this product. Let me know if this will set the SWR without
having to mess with the antenna's.

"Don't "Live with" High SWR Readings! This Matcher will tune your SWR very
low, simply insert inline between radio & Antenna. Has 2 Adjustment knobs.
Perfect for Radios with wide channel coverage, indoor antennas, non-tunable
mobile antennas, or for using 10 thru 12 meters off 1 antenna. Handles 80w
pep. Requires either an SWR meter built into radio, or an optional SWR
meter between Radio & Matcher."

This is a line flattener.


....oh brother, more voodoo CB terminology.

If the line has standing waves on it then it isn't flat, and no
matching device on the radio end can reduce or eliminate the line-load
mismatch causing the standing waves. The only "line flattener" is a
LOAD impedance that matches the LINE impedance. You can't do that at
the radio.


They can be problematic in that one of the
knobs can be bumped and give you an abnormally high SWR reading.
Much higher than the antenna itself.


Or the antenna can hit a tree and fall off, or the coax could get
jammed in the door, or the radio's power leads could be accidently
shorted by a sharp edge under the dash.......


You also will double the possibility of a loose coax connector, and
don't forget that moving the setup will require more time and care.


Oh, the turmoil of it all! So why even bother using the CB in the
first place if there's going to be the possibility of a problem? If
you want to discourage the guy from using a matching device then at
least give him some -valid- reasons. Like, you probably won't notice
any difference if the SWR is 3:1 and not 1:1, or that the importance
of SWR is moot when compared to field strength, or that any matching
device isn't going to accomplish squat with a cigarette-lighter radio
and a mag-mount antenna.

This isn't exactly a performance rig, and the fact is that SWR isn't
going to tell you anything -- if you manage to get it to 1:1 you'll
get a warm-fuzzy, but that's about it. Just plug it in and talk. If
someone hears you, great. If they don't, there's probably nothing you
can do short of a full and proper install that will get you heard.







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News==----
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Newsgroups
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On Sat, 30 Jul 2005 23:11:03 -0700, "John Smith"
wrote in
:

Frank:

Yep. The good old "hair splitters" come crawling out now. Fact is, and he
made them clear!, the company has the antenna and coax, it is a give, he will
switching trucks, no time and doesn't wanna pay shop fees with every run, load,
etc...

The match box is fine, guarantees he will not generate a bunch of shop costs...


It guarantees nothing of the sort, since any improvement is marginal
at best..... more than likely he wouldn't notice the difference in a
blind comparison. What he -will- notice is that his bandwidth is now
more limited (actually -increasing- SWR on the high and low end of the
band) because those matchboxes make pretty good preselectors.


Any sensible person knows it is a no brainer...


Any sensible person would want to know if he's wasting his money on a
gimmick that sounds good in theory (and marketing) but does little or
nothing for his intended application.


He doesn't want to get a damn engineering degree, he wants to use it...


Maybe you missed this part:


.... Just plug it in and talk. If
someone hears you, great. If they don't, there's probably nothing you
can do short of a full and proper install that will get you heard.











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On Sat, 30 Jul 2005 23:11:03 -0700, "John Smith"
wrote:

+The match box is fine, guarantees he will not generate a bunch of shop costs...
+
+Any sensible person knows it is a no brainer...
+
+He doesn't want to get a damn engineering degree, he wants to use it...
+John
******

A matchbox only fools the transmitter into thinking it sees a proper
load. It does nothing for the standing waves that already exist on the
coax. It does not improve antenna performance.

james

On Sat, 30 Jul 2005 22:56:21 -0700, Frank Gilliland
wrote:

On Sat, 30 Jul 2005 23:54:05 -0400, wrote in
:


If you move the radio from location to location just check the
reading. If it's 2:1 or lower don't worry about it.


Thanks,
I have an SWR meter from radio shack that I've used in the past. I know how
to use it. My problem is that I'll be in a different truck everyday and
wont be able to set the SWR the way I want to. On Monday I'm gonna call the
cb shop that I saw online and ask them about the SWR match box. Below is a
cut and paste of this product. Let me know if this will set the SWR without
having to mess with the antenna's.

"Don't "Live with" High SWR Readings! This Matcher will tune your SWR very
low, simply insert inline between radio & Antenna. Has 2 Adjustment knobs.
Perfect for Radios with wide channel coverage, indoor antennas, non-tunable
mobile antennas, or for using 10 thru 12 meters off 1 antenna. Handles 80w
pep. Requires either an SWR meter built into radio, or an optional SWR
meter between Radio & Matcher."

This is a line flattener.


....oh brother, more voodoo CB terminology.



http://www.rockwellcollins.com/ecat/gs/LF-2040.html


http://www.listserve.com/archives/co.../msg00270.html


http://www.listserve.com/archives/co.../msg00270.html


http://www.co.missoula.mt.us/acs/radios/HF-8040.htm


http://www.valcom.ca/Guelph/products...-30_photo.html


Yup. Sure looks like the term "Line Flattener" is "more voodoo CB
terminology"