Toshiba TV29C90 problem; Image fades to black...

I'm still looking for a way to repair my Olympus C-700 digital camera
without having to send it to Olympus with a check for $150. (Power
problem -- NOT battery related.)

So I'm keeping the posting going - hoping the right person will eventually
stumble into it.

Over the past few days, I have called 20+ shops in the LA area and none work
on Olympus digital cameras.

Fred
 
On Wed, 25 Aug 2004 16:03:46 GMT, "Fred"
<testing@testing1212mouse.com> wrote:

I'm still looking for a way to repair my Olympus C-700 digital camera
without having to send it to Olympus with a check for $150. (Power
problem -- NOT battery related.)

So I'm keeping the posting going - hoping the right person will eventually
stumble into it.

Over the past few days, I have called 20+ shops in the LA area and none work
on Olympus digital cameras.

Fred
Sounds like the C700 caught the C2100 sudden death syndrone.
Power supply board dies suddenly.

Have you checked the prices and features of current models ?

Robots build those things much cheaper than humans take them apart.
 
Thanks again thus far;

HTH suggested being administrator on the new OS and forcing my my into the
files. I have done this and copied everything worth having to another drive.
I've done this completely from a clone, so the original OS is still untouched.

The most important thing was to sake the guy's files, that being done, now I'd
like to repair the original OS because the dude violated my prime directive of
"DO NOT LOSE THOSE DISKS" and further reading has awoken me to the possibility
of losing accounts. Even if the private files are lost on this drive, we still
got big driver issues, burning and ripping software etc.

Someone mentioned a set of Linux floppies that can reset the admin password.
Whatever the repair process does, it can't be worse than what I got. EZCD 6 is
not likely to install from a HD, and there are countless other things.

Does anyone know where to get these disks ? I've Googled but ran into a few
garden paths. Does anyone have a direct link already that will actually work ?
If so I'd appreciate it if they dropped it in here.

Thanks again and don't worry, I won't probably be back with this type of
problem, I intend to explore every avenue available to protect PCs that I
build. This one is going to be repleat with user accounts, one for each member
of the family. When I get through, the security is going to be tighter than a
gnat's ass stretched over a 55 gallon drum.

A quick link to get those disks would be greatly appreciated. Actually, now
that I think of it, I should try to get it on P2P, but of course can I trust it
?

JURB
 
As far as the specific drivers, etc for the programmes you may have a chance
downloading the ones specifically for each device the client is using.
Meaning you will require the exact model number of all the devices that your
client is using. Most of the company web sites will allow downloads of the
drivers, inclusive of the OCR drives for the flatbed scanners. It is a time
consuming and sometimes aggravating procedure because you may need to test
each with the operable system to confirm that indeed they are the
appropriate drivers. Been there_done that too many times and I do agree it
is a RPIA when these things get FUBARD in this manner!! Lots of luck and
patience.
"JURB6006" <jurb6006@aol.com> wrote in message
news:20040830152432.25237.00000018@mb-m07.aol.com...
Thanks again thus far;

HTH suggested being administrator on the new OS and forcing my my into the
files. I have done this and copied everything worth having to another
drive.
I've done this completely from a clone, so the original OS is still
untouched.

The most important thing was to sake the guy's files, that being done, now
I'd
like to repair the original OS because the dude violated my prime
directive of
"DO NOT LOSE THOSE DISKS" and further reading has awoken me to the
possibility
of losing accounts. Even if the private files are lost on this drive, we
still
got big driver issues, burning and ripping software etc.

Someone mentioned a set of Linux floppies that can reset the admin
password.
Whatever the repair process does, it can't be worse than what I got. EZCD
6 is
not likely to install from a HD, and there are countless other things.

Does anyone know where to get these disks ? I've Googled but ran into a
few
garden paths. Does anyone have a direct link already that will actually
work ?
If so I'd appreciate it if they dropped it in here.

Thanks again and don't worry, I won't probably be back with this type of
problem, I intend to explore every avenue available to protect PCs that I
build. This one is going to be repleat with user accounts, one for each
member
of the family. When I get through, the security is going to be tighter
than a
gnat's ass stretched over a 55 gallon drum.

A quick link to get those disks would be greatly appreciated. Actually,
now
that I think of it, I should try to get it on P2P, but of course can I
trust it
?

JURB
 
I hate to be a pest;

I've read that if you get rid of the SAM files down in system32\config, there
will be no passwords. Articles have refferred to a SAM.exe file, but all I
found was a SAM.log (or was it sav ?) and a SAM file with no extension at all.
Viewing either gives you the usual hashed up slashed up crap, nothing for the
human eye. Actually I can't even tell if the file is corrupt. Booting from the
new drive with this one as D: I renamed the SAM files and now when I go to
recovery console I don't get a prompt for a password, but after it asks "which"
windows install do I wish to log onto, I tell it #1 and then it gives me a
C:\windows prompt and stops. Doesn't lock up, i.e. caps and nums still respond,
but that ain't for sure, so last time I typed exit, and it did indeed exit.

Now I still have yet another drive loaded for this machine, but it has a bad
error because I put word97 on it and it keeps asking for the XP disk to replace
"outdated" files. I can however get safemode admin on it.

What if I copied the valid SAM files from the one that runs "right" to the
original. Even if I lose all the original accounts, I'll still have drivers,,,,
or will I ??

Is this something you think might work ? I can indeed have all three drives in
there with a CD drive, had it that way before. Just gotta be sure which files
I'm putting where. Is this crazy plan even worth a try ?

There is yet one more thing, I know I'm learning as I go along, but any idea
what I should charge this guy ? I know the nature of what I saved in the way of
files, they are valuable to him. All this instead of him bringing the disks and
simply format C: ! Also he doesn't have the disks so if this last ditch effort
to save the OS doesn't work I'll be DLing drivers.

Also, I Google for those Linux disks, alot of hits come up, but there's all
this runaround. One place is selling them ($195) but this is a utility and
everything on two floppies. I tried P2P, nothing. One site said I needed a
command line decompressor, now this would run in Linux, so not only do I not
know the WINRAR commands, there's very little I know about the syntax in the OS
itself, like how to open the program, just type it like DOS (I hope).

Would the old PKUNZIP run on NTFS ? I think I can remember enough. At this
point, both files named SAM are renamed, I'm thinking about going ahead my the
"crazy" plan, put the working SAM files in. If it doesn't work I can restore
everything to where it was. Back to shuffling harddrives I guess.

Again I am dubious about the odds of success. If you can just replace these SAM
files at will there ain't much security, of course we do actually know that.
The one advantage here though is that all the SAM files were generated on this
particular PC, and the replacement will come from a HD of exactly the same
model. I think it pretty unlikely that I could just walk into anyone's PC with
my own SAM files and take over, or could I ? WOW, what an idea.

At any rate any machine ID stuff in there would be the same.

The only thing that bothers me is that the same condition that caused it to
crash is likely to still be there, a virus or 20, spyware, worms, who knows.
then I'll have to deal witrh that. Lucky me.

As always your comments and suggestions are welcomed and appreciated. Thanks
again.

JURB
 
One question, what are the odd of being able to back up his data files to cd
or dvd so he will have an archive before anything seriously goes awry? If
you have a cd drive installed the XP Backup Programme will allow you to do
either a full or incremental backup [discrete files].
Also there is a utility that will create a NTFS boot disk that allows you
to boot to a C:\prompt and examine the files on a one by one basis. Wish I
could remember the url for that to send to you. I have a floppy that I made
using that info and it has saved me a bit of frustration from time to time.
Beyond that I also have a floppy called a NUKE DISK that does just the
opposite!!
BTW I use PKZIP/UNZIP all the time with my NTFS System and have had no
problems.
As far as how much to charge the guy, how good a friend is he and how much
is his data worth. You could always have sent the drive(s) off to one of the
recovery companies and have him pay thru the teeth!! The odds of getting
proper operation copying the *>SAM files may not work because of changing
address locations or registry ties.
There is a point at which I try to determine just how much more of a
"learning experience I really care to endure". Before it turns into a point
of low or no return. Maybe backing up the data, F_Disk_ing the whole
shebang, and reloading may be your final solution. just try to do a backup
before the probability of data loss, contamination does occur.
Running XP Pro now with the actual 2nd packet rather than still beta testing
it.
"JURB6006" <jurb6006@aol.com> wrote in message
news:20040830173618.26463.00000002@mb-m13.aol.com...
I hate to be a pest;

I've read that if you get rid of the SAM files down in system32\config,
there
will be no passwords. Articles have refferred to a SAM.exe file, but all I
found was a SAM.log (or was it sav ?) and a SAM file with no extension at
all.
Viewing either gives you the usual hashed up slashed up crap, nothing for
the
human eye. Actually I can't even tell if the file is corrupt. Booting from
the
new drive with this one as D: I renamed the SAM files and now when I go to
recovery console I don't get a prompt for a password, but after it asks
"which"
windows install do I wish to log onto, I tell it #1 and then it gives me a
C:\windows prompt and stops. Doesn't lock up, i.e. caps and nums still
respond,
but that ain't for sure, so last time I typed exit, and it did indeed
exit.

Now I still have yet another drive loaded for this machine, but it has a
bad
error because I put word97 on it and it keeps asking for the XP disk to
replace
"outdated" files. I can however get safemode admin on it.

What if I copied the valid SAM files from the one that runs "right" to the
original. Even if I lose all the original accounts, I'll still have
drivers,,,,
or will I ??

Is this something you think might work ? I can indeed have all three
drives in
there with a CD drive, had it that way before. Just gotta be sure which
files
I'm putting where. Is this crazy plan even worth a try ?

There is yet one more thing, I know I'm learning as I go along, but any
idea
what I should charge this guy ? I know the nature of what I saved in the
way of
files, they are valuable to him. All this instead of him bringing the
disks and
simply format C: ! Also he doesn't have the disks so if this last ditch
effort
to save the OS doesn't work I'll be DLing drivers.

Also, I Google for those Linux disks, alot of hits come up, but there's
all
this runaround. One place is selling them ($195) but this is a utility and
everything on two floppies. I tried P2P, nothing. One site said I needed a
command line decompressor, now this would run in Linux, so not only do I
not
know the WINRAR commands, there's very little I know about the syntax in
the OS
itself, like how to open the program, just type it like DOS (I hope).

Would the old PKUNZIP run on NTFS ? I think I can remember enough. At this
point, both files named SAM are renamed, I'm thinking about going ahead my
the
"crazy" plan, put the working SAM files in. If it doesn't work I can
restore
everything to where it was. Back to shuffling harddrives I guess.

Again I am dubious about the odds of success. If you can just replace
these SAM
files at will there ain't much security, of course we do actually know
that.
The one advantage here though is that all the SAM files were generated on
this
particular PC, and the replacement will come from a HD of exactly the same
model. I think it pretty unlikely that I could just walk into anyone's PC
with
my own SAM files and take over, or could I ? WOW, what an idea.

At any rate any machine ID stuff in there would be the same.

The only thing that bothers me is that the same condition that caused it
to
crash is likely to still be there, a virus or 20, spyware, worms, who
knows.
then I'll have to deal witrh that. Lucky me.

As always your comments and suggestions are welcomed and appreciated.
Thanks
again.

JURB
 
Trying to keep it short, replacing the SAM files didn't work. I had to try, man
it was made on the same machine (on a sector to sector clone), HD of literally
the same model #. Doesn't bother me, I didn't even give it 50/50, but like I
said I had to try it. It seemed possible.

Now we know, even under these conditions that won't work.

Incidentally, I had a close look at what it does running off the original
drive. Any other drive actually locks up the KB as well, but only for a sec or
two, once it unlocks there is alot of HD activity and then it runs, but on the
original, that is where it locks. Both other drives do this, but only for about
3 or 4 seconds, the original will sit there all night.

This experiecnce has been so enlightening that I don't think I'll ever build a
PC for anyone I know again. A long time friendship, while not threatened, is
strained.

I am dismayed by the fact that in only 10 months they crashed it and lost all
the disks.They may have been thrown out in the "christmas cleaning frenzy".
At any rate, I am (mostly) washing my hands of it tomorrow night. He got in a
hurry and I told him straight out, "take it to someone who knows more than me".
That is that.

I don't like it, but that's how it is.

JURB
 
"JURB6006" <jurb6006@aol.com> wrote in message
news:20040901030202.03151.00000011@mb-m19.aol.com...
Trying to keep it short, replacing the SAM files didn't work. I had to
try, man
it was made on the same machine (on a sector to sector clone), HD of
literally
the same model #. Doesn't bother me, I didn't even give it 50/50, but like
I
said I had to try it. It seemed possible.

Now we know, even under these conditions that won't work.

Incidentally, I had a close look at what it does running off the original
drive. Any other drive actually locks up the KB as well, but only for a
sec or
two, once it unlocks there is alot of HD activity and then it runs, but on
the
original, that is where it locks. Both other drives do this, but only for
about
3 or 4 seconds, the original will sit there all night.

This experiecnce has been so enlightening that I don't think I'll ever
build a
PC for anyone I know again. A long time friendship, while not threatened,
is
strained.

I am dismayed by the fact that in only 10 months they crashed it and lost
all
the disks.They may have been thrown out in the "christmas cleaning
frenzy".
At any rate, I am (mostly) washing my hands of it tomorrow night. He got
in a
hurry and I told him straight out, "take it to someone who knows more than
me".
That is that.

I don't like it, but that's how it is.

JURB
I made the mistake of building a computer for a sister-in-law and her
family. They're novices, and they've already blown it out with viruses,
spyware, misc other problems several times in the eight months since I built
it.
Now I'm married to it. Every time it breaks I get to drive 15 miles to their
house and spend up to three hours or more fixing it.

I'm done building computers for anyone but me. This includes building them
for my shop.

Mark Z.
 
Been there Gov!! Give it back to him and have him take it to the local
Geuru!! I'll bet he will have similar experience until they tell him they
will need to send the drives out to have the data recovered. found out a
long time ago that "Friendship" goes a heck of a long ways beyond data,
opinions, attitudes, and languages differences.
No use in burning yourself out or loss of a friend. Again, emphasize to him
once he gets a functional system to religiously begin backups, daily if he
uses the data for business. At least then he should have viable archives, if
he follows a bit of wisdom.
"JURB6006" <jurb6006@aol.com> wrote in message
news:20040901030202.03151.00000011@mb-m19.aol.com...
Trying to keep it short, replacing the SAM files didn't work. I had to
try, man
it was made on the same machine (on a sector to sector clone), HD of
literally
the same model #. Doesn't bother me, I didn't even give it 50/50, but like
I
said I had to try it. It seemed possible.

Now we know, even under these conditions that won't work.

Incidentally, I had a close look at what it does running off the original
drive. Any other drive actually locks up the KB as well, but only for a
sec or
two, once it unlocks there is alot of HD activity and then it runs, but on
the
original, that is where it locks. Both other drives do this, but only for
about
3 or 4 seconds, the original will sit there all night.

This experiecnce has been so enlightening that I don't think I'll ever
build a
PC for anyone I know again. A long time friendship, while not threatened,
is
strained.

I am dismayed by the fact that in only 10 months they crashed it and lost
all
the disks.They may have been thrown out in the "christmas cleaning
frenzy".
At any rate, I am (mostly) washing my hands of it tomorrow night. He got
in a
hurry and I told him straight out, "take it to someone who knows more than
me".
That is that.

I don't like it, but that's how it is.

JURB
 
Its not just ANY Sony.. they make cheap junk ones too.
The models like SLV-595HF , the SVHS equivalent and similar.
If theyre SUPER nice & have the jog/shuttle remote, yes.
I've seen the remotes (RMT-V121C) ALONE go for over $50!


"James Sweet" <jamessweet@hotmail.com> wrote in message
news:hhARc.7502$BO.2303@nwrddc03.gnilink.net...
"Team Goon" <teamgoon@ilovespam.comcast.net> wrote in message
news:ge6dnZGyReSQk4vcRVn-ig@comcast.com...
It depends on the VCRs.. I find high end machines at thrift stores for
little of nothing & sell them on eBay for decent prices. I got 4 of the
Sonys with the jog/shuttle (the older ones that were made well). They
ALL
went for over $150 each on eBay. not bad for $8 each & lubricating that
sticky tape guide.



Sonys are going for $150 each?? I have 3 of them that I've picked up that
only needed basic repairs, never thought they'd fetch more than $25-$30
these days.
 
Another stupid old troll has to rear it's ugly head.

"Chaos Master" <chaos.master@yahoo.com> wrote in message
news:MPG.1b838b6634e550589896bd@news.individual.net...
Hey ~ (~@1.2)! You wrote in message <100820040253507765%~@1.2>, at group
sci.electronics.repair, on the date of Tue, 10 Aug 2004 02:53:50 -0400:

[to repair old VCR's].

Please don't top-post!

may be worth it especially since old enough vcrs dont respond to
macrovision and you can backup your store bought movies.

Exactly. I don't watch lots of movies (mainly do recordings from TV) so a
new
VCR is no need for me.

[]s
--
Chaos MasterŽ, posting from Brazil. REPLY TO GROUP!
MSN: wizard_of_yendor[@]hotmail[.]com http://marreka.no-ip.com
Powered by chaos. Chaos. CHAOS. Š|-|405.
 
In an ADM3A terminal, Mark D. Zacharias typed:
"JURB6006" <jurb6006@aol.com> wrote in message
news:20040901030202.03151.00000011@mb-m19.aol.com...
Trying to keep it short, replacing the SAM files didn't work. I had to
try, man
it was made on the same machine (on a sector to sector clone), HD of
literally
the same model #. Doesn't bother me, I didn't even give it 50/50, but like
I
said I had to try it. It seemed possible.

Now we know, even under these conditions that won't work.

Incidentally, I had a close look at what it does running off the original
drive. Any other drive actually locks up the KB as well, but only for a
sec or
two, once it unlocks there is alot of HD activity and then it runs, but on
the
original, that is where it locks. Both other drives do this, but only for
about
3 or 4 seconds, the original will sit there all night.

This experiecnce has been so enlightening that I don't think I'll ever
build a
PC for anyone I know again. A long time friendship, while not threatened,
is
strained.

I am dismayed by the fact that in only 10 months they crashed it and lost
all
the disks.They may have been thrown out in the "christmas cleaning
frenzy".
At any rate, I am (mostly) washing my hands of it tomorrow night. He got
in a
hurry and I told him straight out, "take it to someone who knows more than
me".
That is that.

I don't like it, but that's how it is.

JURB

I made the mistake of building a computer for a sister-in-law and her
family. They're novices, and they've already blown it out with viruses,
spyware, misc other problems several times in the eight months since I built
it.
Now I'm married to it. Every time it breaks I get to drive 15 miles to their
house and spend up to three hours or more fixing it.
If they have broadband:

- Install VNC/'No-IP.com Remote DUC' [1] on their computer, configure it.
- When needed, do 'remote assistance' by using VNC from your PC to the remote.

[1] www.no-ip.com, gives a fixed hostname for dynamic IP addresses.

[]s
--
Chaos MasterŽ, posting from Brazil. REPLY TO GROUP!
"People told me I can't dress like a fairy.
I say, I'm in a rock band and I can do what the hell I want!"
-- Amy Lee

Note: please don't give me TinyURL addresses.
 
I made the mistake of building a computer for a sister-in-law and her
family. They're novices, and they've already blown it out with viruses,
spyware, misc other problems several times in the eight months since I
built
it.
Now I'm married to it. Every time it breaks I get to drive 15 miles to
their
house and spend up to three hours or more fixing it.

Could always install NT/2000/XP Pro/Linux, whatever reasonably secure OS
you're familiar with and lock down the machine so that nobody has
administrator rights, they'll still bother you when they need a program
installed but you won't have any of the spyware crap to deal with.
 
In an ADM3A terminal, Team Goon typed:
Another stupid old troll has to rear it's ugly head.
Huh?


--
Chaos MasterŽ, posting from Brazil. REPLY TO GROUP!
"People told me I can't dress like a fairy.
I say, I'm in a rock band and I can do what the hell I want!"
-- Amy Lee

Note: please don't give me TinyURL addresses.
 
Ken is right. I had to buy replacement battery doors for s 340L. Seems like
they were $5 or so each and got them right away. The hinge posts on this
door are weak and easy to break off. I bought a couple of doors.

"Ken Weitzel" <kweitzel@shaw.ca> wrote in message
news:gXLWc.198326$M95.2897@pd7tw1no...
Darrell Larose wrote:

Olympus will not sell repair parts for digital cameras to non-authorized
service shops.

Hi...

With all due respect Darrell; yes they will. Or they
will to me anyways.

That's assuming you're prepared and willing to pay
absolutely unbelievable prices for them.

Ken
 
Does anybody know of a technical report of the "indoor aerial" I was told a
few years ago the there is no resemblance between the rabbits ears and
aerial theory, just I have a few people who want to argue the point, and
hoping there might be a URL around that might show I'm right or partly
right.







---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.759 / Virus Database: 508 - Release Date: 09-Sep-04
 
The basic TV rabbit ears are a simple 300 ohm dual dipole antenna. Look
up dipole antennas and you should have some explanations. A dual dipole
antenna is based on the simple single dipole antenna. The 2 dipoles work
in a parallel type of operation to accommodate having a balanced type of
antenna, to match to the 300 ohms.

If you were to add on a 300 ohm to 75 ohm converter, then you can use a
single dipole antenna (single rod type antenna that most of the newer
sets are using for local indoor use). The TV sets that have the single
dipole antenna have the their RF entry in the 75 ohm impedance design.

On the rabbit ears, each dipole is adjustable (length and angle) to
compensate for frequency, reflections, and directivity.

Many of the manufactures of rabbit ears added on traps, and other gadget
type options to make these more adjustable. Many of these add-ons
worsened the rabbit ear performance, and or made them more complicated
to use.

Most of the sites you will find on the web deal with armature radio. The
impedance for communications equipment 50 ohms (52 ohms) by standard.

Antenna Basics:
http://www.electronics-tutorials.com/antennas/antenna-basics.htm

Antenna Calculator & Information:
http://www.csgnetwork.com/antennaedcalc.html


--

Jerry G.
======

"Eric" <hahaha@clear.i.never.see.junk.mail.com> wrote in message
news:414180d1@clear.net.nz...
Does anybody know of a technical report of the "indoor aerial" I was
told a
few years ago the there is no resemblance between the rabbits ears and
aerial theory, just I have a few people who want to argue the point, and
hoping there might be a URL around that might show I'm right or partly
right.







---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.759 / Virus Database: 508 - Release Date: 09-Sep-04
 
Jerry G posted:

<< The basic TV rabbit ears are a simple 300 ohm dual dipole antenna. Look up
dipole antennas and you should have some explanations. A dual dipole antenna is
based on the simple single dipole antenna. The 2 dipoles work in a parallel
type of operation to accommodate having a balanced type of antenna, to match to
the 300 ohms.

If you were to add on a 300 ohm to 75 ohm converter, then you can use a single
dipole antenna (single rod type antenna that most of the newer sets are using
for local indoor use). The TV sets that have the single
dipole antenna have the their RF entry in the 75 ohm impedance design.

On the rabbit ears, each dipole is adjustable (length and angle) to compensate
for frequency, reflections, and directivity.

Many of the manufactures of rabbit ears added on traps, and other gadget type
options to make these more adjustable. Many of these add-ons worsened the
rabbit ear performance, and or made them more complicated to use.

Most of the sites you will find on the web deal with armature radio. The
impedance for communications equipment 50 ohms (52 ohms) by standard.

Antenna Basics:
http://www.electronics-tutorials.com/antennas/antenna-basics.htm

Antenna Calculator & Information:
http://www.csgnetwork.com/antennaedcalc.html
A rabbit ears antenna is *not* a dual dipole antenna. It is simply a dipole
antenna adjustable to a half-wavelength through, at least, the low (2-13) TV
channels.

Don
 
"Eric" <hahaha@clear.i.never.see.junk.mail.com> wrote in message
Does anybody know of a technical report of the "indoor aerial" I was told
a
few years ago the there is no resemblance between the rabbits ears and
aerial theory, just I have a few people who want to argue the point, and
hoping there might be a URL around that might show I'm right or partly
right.
- - - - - - - - - - -


Eric:
Actually, since rabbit ears are an "open dipole" not a folded dipole, the
impedance of a simple dipole is closer to a nominal 75 ohms..... and that
is only the case if the ears are in a straight line and are not in a
typically found "V" formation. Since rabbit ears are fed with a 300 ohm
twin-lead and usually fed into a 300 ohm to 75 ohm transformer/adapter so it
will plug into the 75 ohm "F" connector on the back of a television or
VCR....... all of these mis-matches significantly reduce the efficiency on
the whole operation...... however..... since rabbit ears are usually only
used in local strong signal areas all of these mismatches in reality are
simply overlooked..... and can work surprisingly well in some areas.
A "folded" dipole, similar to the cheap FM tuner "T" antennas, is optimally
a 300 ohm device and are usually made entirely out of 300 ohm twin-lead
including the nominally 5 to 6 foot long horizontal antenna element that
forms a closed loop.... or "folded dipole." Some cheaper versions of the
FM "T" antenna do not utilize 300 ohm twin-lead and are just a simple "open"
dipole and are usually and properly connected to the 75 ohm terminals on the
back of the FM tuner.
--
Best Regards,
Daniel Sofie
Electronics Supply & Repair
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I heard a engineering school did tests and came up with the conclusion it
looks like a aerial but that was as far as it got. Then I told this to a
owner that started & owned a aerial manufacturing company, who agreed.


Now personally I don't give too shits what the out come is, but I wonder who
other people talk too before that make a issue of nothing



"Jerry G." <jerryg@total.net> wrote in message
news:2qdqqvFue5g0U1@uni-berlin.de...
The basic TV rabbit ears are a simple 300 ohm dual dipole antenna. Look
up dipole antennas and you should have some explanations. A dual dipole
antenna is based on the simple single dipole antenna. The 2 dipoles work
in a parallel type of operation to accommodate having a balanced type of
antenna, to match to the 300 ohms.

If you were to add on a 300 ohm to 75 ohm converter, then you can use a
single dipole antenna (single rod type antenna that most of the newer
sets are using for local indoor use). The TV sets that have the single
dipole antenna have the their RF entry in the 75 ohm impedance design.

On the rabbit ears, each dipole is adjustable (length and angle) to
compensate for frequency, reflections, and directivity.

Many of the manufactures of rabbit ears added on traps, and other gadget
type options to make these more adjustable. Many of these add-ons
worsened the rabbit ear performance, and or made them more complicated
to use.

Most of the sites you will find on the web deal with armature radio. The
impedance for communications equipment 50 ohms (52 ohms) by standard.

Antenna Basics:
http://www.electronics-tutorials.com/antennas/antenna-basics.htm

Antenna Calculator & Information:
http://www.csgnetwork.com/antennaedcalc.html


--

Jerry G.
======

"Eric" <hahaha@clear.i.never.see.junk.mail.com> wrote in message
news:414180d1@clear.net.nz...
Does anybody know of a technical report of the "indoor aerial" I was
told a
few years ago the there is no resemblance between the rabbits ears and
aerial theory, just I have a few people who want to argue the point, and
hoping there might be a URL around that might show I'm right or partly
right.







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