John, from your circuit, if you change the direction of current in the
coaxial conductor through the ferrite ring, nothing happens. Why
should it?

The only thing worthy of consideration is your determined persistence.

As I have said before, as may be gleaned from other contributors, you
are in good company.

Beware, the amount of effort the old wives are putting into it might
give you the impression it's worth while making a patent application.

On the other hand, what with the state of expertise in the Patent
Office, you may possibly succeed. But you will never get rich enough
to recover your legal expenses.
----
Reg, G4FGQ

Ahhh Reg, I am NOT an "inventor", I have to work for a living (boss claims
he pays me for nothing anyway!!! grin)... darn lucky if I can get
"proven" ideas to function properly but, if you think that stops me--think
again!!! wishful-grin



And, you don't have to warn me, from personal experience, ham swaps, ham
friends, observations (not just picking on hams, name another group--they
are there too!)--I realize there are a few which would attempt to patent
sewer water and sell it for profit!!! (old boat anchors too...)



I am quite honest, I want a "simpler" SWR meter (and, that is a problem, all
the ones standing around with $$$ signs in their eyes are too busy or afraid
they will give away a "million-dollar-idea" away to the newbie’s--that is NO
HELP!!! Or, else "swollen egos" just get in the way... it gets tiring
bowing all the time--I have NO time, no one really does grin!)



I don't care if the darn thing is "accurate" or not!!!



I don't care if it can tell me EXACTLY what SWR I have or not (well, being
able to note a ~1:1 is VERY desirable--but just "lowest possible" is
sufficient) EXCEPT to be able to indicate "better" and "worse."



Having to construct "directional couplers" from coax and tubing or pc board
etches just puts me off... I am trying to shave a bit of complication
away--NOT to mention SIZE!... I'd even borrow Occams' old dull razor if I
could!!! grin



And, Cecils offering of the "two lamp" swr indicator is perfect!!! Too bad
I can't think of a way to make it function, easily, for coax (and, the
"lamps" are not "hardened" enough against damage--would have to use LEDS)...



If I find what I am looking for, I'll know it--the most I'll ever do is
build a bunch and give 'em away to my "good-ole CB buddies!" "10-4
Good-Buddy?" grin



Warmest regards,

John



"Reg Edwards" wrote in message
...
| John, from your circuit, if you change the direction of current in the
| coaxial conductor through the ferrite ring, nothing happens. Why
| should it?
|
| The only thing worthy of consideration is your determined persistence.
|
| As I have said before, as may be gleaned from other contributors, you
| are in good company.
|
| Beware, the amount of effort the old wives are putting into it might
| give you the impression it's worth while making a patent application.
|
| On the other hand, what with the state of expertise in the Patent
| Office, you may possibly succeed. But you will never get rich enough
| to recover your legal expenses.
| ----
| Reg, G4FGQ
|
|

Anyway.... even if not before, by this weekend I will be able to get away
from this dern computer! and go build "SOMETHING!!!!"

Warmest regards,
John

"John Smith" wrote in message
...
| Ahhh Reg, I am NOT an "inventor", I have to work for a living (boss claims
| he pays me for nothing anyway!!! grin)... darn lucky if I can get
| "proven" ideas to function properly but, if you think that stops me--think
| again!!! wishful-grin
|
|
|
| And, you don't have to warn me, from personal experience, ham swaps, ham
| friends, observations (not just picking on hams, name another group--they
| are there too!)--I realize there are a few which would attempt to patent
| sewer water and sell it for profit!!! (old boat anchors too...)
|
|
|
| I am quite honest, I want a "simpler" SWR meter (and, that is a problem,
all
| the ones standing around with $$$ signs in their eyes are too busy or
afraid
| they will give away a "million-dollar-idea" away to the newbie’s--that is
NO
| HELP!!! Or, else "swollen egos" just get in the way... it gets tiring
| bowing all the time--I have NO time, no one really does grin!)
|
|
|
| I don't care if the darn thing is "accurate" or not!!!
|
|
|
| I don't care if it can tell me EXACTLY what SWR I have or not (well, being
| able to note a ~1:1 is VERY desirable--but just "lowest possible" is
| sufficient) EXCEPT to be able to indicate "better" and "worse."
|
|
|
| Having to construct "directional couplers" from coax and tubing or pc
board
| etches just puts me off... I am trying to shave a bit of complication
| away--NOT to mention SIZE!... I'd even borrow Occams' old dull razor if I
| could!!! grin
|
|
|
| And, Cecils offering of the "two lamp" swr indicator is perfect!!! Too
bad
| I can't think of a way to make it function, easily, for coax (and, the
| "lamps" are not "hardened" enough against damage--would have to use
LEDS)...
|
|
|
| If I find what I am looking for, I'll know it--the most I'll ever do is
| build a bunch and give 'em away to my "good-ole CB buddies!" "10-4
| Good-Buddy?" grin
|
|
|
| Warmest regards,
|
| John
|
|
|
| "Reg Edwards" wrote in message
| ...
|| John, from your circuit, if you change the direction of current in the
|| coaxial conductor through the ferrite ring, nothing happens. Why
|| should it?
||
|| The only thing worthy of consideration is your determined persistence.
||
|| As I have said before, as may be gleaned from other contributors, you
|| are in good company.
||
|| Beware, the amount of effort the old wives are putting into it might
|| give you the impression it's worth while making a patent application.
||
|| On the other hand, what with the state of expertise in the Patent
|| Office, you may possibly succeed. But you will never get rich enough
|| to recover your legal expenses.
|| ----
|| Reg, G4FGQ
||
||
|
|

I think anybody can post to alt.binaries.schematics.electronic .

Tam/WB2TT

Ok. I had to go out this morning.
I stopped by a used book store, I found two circuits, using the toroid in a
similar fashion to what I am working with.
What I found is "THE 1989 EDITION 'ARRL HANDBOOK'." ($2 bucks, what a buy,
huh?)

On pgs. 34-9 and 34-10 the similar circuits exist, I have placed them at:
http://blake.prohosting.com/mailguy2/swr1.jpg
and
http://blake.prohosting.com/mailguy2/swr2.jpg

This should prove as "proof of concept" that an "indicator" using such a
toroid should darn well work! ... at the very least--in the fashion I am
attempting...

swr1 is claimed to handle up to 150 watts, swr2 2KW!

So, now we should all be on the "same page" and, even those "high priests"
of ARRL should NOT be offended!!!!

If anyone is greatly interested in the text of construction
details/article--email me....

Warmest regards,
John

"John Smith" wrote in message
...
| This is a SWR bridge I built using leds and a homemade "directional
| coupler."
|
| ALL critiques on it, and ideas for improvements are welcomed!!!
|
| Please excuse my rough drawing, I am NOT a draftsperson!
|
| Hopefully, the attachment of the .jpg was successful....
|
| Warmest regards,
| John
|
|

John Smith wrote:
http://blake.prohosting.com/mailguy2/swr1.jpg
http://blake.prohosting.com/mailguy2/swr2.jpg

This should prove as "proof of concept" that an "indicator" using such a
toroid should darn well work! ... at the very least--in the fashion I am
attempting...

If you will notice, your earlier versions did not sample
the voltage. These designs sample the voltage through C1
and C2. The current is sampled by T1. The voltages are
phasor-added to the current to obtain signals proportional
to forward power and reflected power. Those voltage sampling
caps are what were missing from your earlier designs.
--
73, Cecil, http://www.qsl.net/w5dxp

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"Cecil Moore" wrote in message
...
John Smith wrote:
http://blake.prohosting.com/mailguy2/swr1.jpg
http://blake.prohosting.com/mailguy2/swr2.jpg

This should prove as "proof of concept" that an "indicator" using such a
toroid should darn well work! ... at the very least--in the fashion I
am
attempting...

If you will notice, your earlier versions did not sample
the voltage. These designs sample the voltage through C1
and C2. The current is sampled by T1. The voltages are
phasor-added to the current to obtain signals proportional
to forward power and reflected power. Those voltage sampling
caps are what were missing from your earlier designs.
--
73, Cecil, http://www.qsl.net/w5dxp

----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet
News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+
Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption
=----

CQ Amateur Radio magazine October 1997 "N7VE's One LED SWR Indicator".

73 Roger ZR3RC

Yes, I suspect that mine is relying on "stray capacatance" and it is not
sufficient--and--that is why I experience that "plunge into darkness" of the
REF LED at 1:1--and NOT a smooth adjustment and indication... (just
guessing)

Anyway, those capacitors are VERY small ~3pf, and as Cecil was so kind to
point out to me, in an email, a twisted pair of high-pot enameled wires
would, most likely, suffice--keeping with my "cheap and simple" design....
I can simply chuck another of my junkbox toroids in for the rf choke...

Warmest regards,
John

"Roger Conroy" wrote in message
...
|
| "Cecil Moore" wrote in message
| ...
| John Smith wrote:
| http://blake.prohosting.com/mailguy2/swr1.jpg
| http://blake.prohosting.com/mailguy2/swr2.jpg
|
| This should prove as "proof of concept" that an "indicator" using such
a
| toroid should darn well work! ... at the very least--in the fashion I
| am
| attempting...
|
| If you will notice, your earlier versions did not sample
| the voltage. These designs sample the voltage through C1
| and C2. The current is sampled by T1. The voltages are
| phasor-added to the current to obtain signals proportional
| to forward power and reflected power. Those voltage sampling
| caps are what were missing from your earlier designs.
| --
| 73, Cecil, http://www.qsl.net/w5dxp
|
| ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet
| News==----
| http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+
| Newsgroups
| ----= East and West-Coast Server Farms - Total Privacy via Encryption
| =----
|
| CQ Amateur Radio magazine October 1997 "N7VE's One LED SWR Indicator".
|
| 73 Roger ZR3RC
|
|

Roger:

Isn't that a "resistive bridge" and consumes ~3/4 of the power? Or, am I
looking at the right design?

It just occured to me, because of your post, I didn't say "can be left
inline" for my design criteria--sorry, my mistake....

But, yes, that would be good enough, thanks for pointing that circuit out to
me.... my only problem, is other than a walkie-talkie, I have no rf souce
of that low of power (~4 watts or less)....

Warmest regards,
John

"Roger Conroy" wrote in message
...
|
| "Cecil Moore" wrote in message
| ...
| John Smith wrote:
| http://blake.prohosting.com/mailguy2/swr1.jpg
| http://blake.prohosting.com/mailguy2/swr2.jpg
|
| This should prove as "proof of concept" that an "indicator" using such
a
| toroid should darn well work! ... at the very least--in the fashion I
| am
| attempting...
|
| If you will notice, your earlier versions did not sample
| the voltage. These designs sample the voltage through C1
| and C2. The current is sampled by T1. The voltages are
| phasor-added to the current to obtain signals proportional
| to forward power and reflected power. Those voltage sampling
| caps are what were missing from your earlier designs.
| --
| 73, Cecil, http://www.qsl.net/w5dxp
|
| ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet
| News==----
| http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+
| Newsgroups
| ----= East and West-Coast Server Farms - Total Privacy via Encryption
| =----
|
| CQ Amateur Radio magazine October 1997 "N7VE's One LED SWR Indicator".
|
| 73 Roger ZR3RC
|
|

Yes it seems to be best suited for a quick antenna check before turning up
the juice!
Sorry it doesn't meet your needs.
73
Roger


"John Smith" wrote in message
news
Roger:

Isn't that a "resistive bridge" and consumes ~3/4 of the power? Or, am I
looking at the right design?

It just occured to me, because of your post, I didn't say "can be left
inline" for my design criteria--sorry, my mistake....

But, yes, that would be good enough, thanks for pointing that circuit out
to
me.... my only problem, is other than a walkie-talkie, I have no rf souce
of that low of power (~4 watts or less)....

Warmest regards,
John

"Roger Conroy" wrote in message
...
|
| "Cecil Moore" wrote in message
| ...
| John Smith wrote:
| http://blake.prohosting.com/mailguy2/swr1.jpg
| http://blake.prohosting.com/mailguy2/swr2.jpg
|
| This should prove as "proof of concept" that an "indicator" using
such
a
| toroid should darn well work! ... at the very least--in the fashion
I
| am
| attempting...
|
| If you will notice, your earlier versions did not sample
| the voltage. These designs sample the voltage through C1
| and C2. The current is sampled by T1. The voltages are
| phasor-added to the current to obtain signals proportional
| to forward power and reflected power. Those voltage sampling
| caps are what were missing from your earlier designs.
| --
| 73, Cecil, http://www.qsl.net/w5dxp
|
| ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet
| News==----
| http://www.newsfeeds.com The #1 Newsgroup Service in the World!
120,000+
| Newsgroups
| ----= East and West-Coast Server Farms - Total Privacy via Encryption
| =----
|
| CQ Amateur Radio magazine October 1997 "N7VE's One LED SWR Indicator".
|
| 73 Roger ZR3RC
|
|