Car Radio Adpater??

[Jeff]

"Watson A.Name - "Watt Sun, the Dark Remover"" <NOSPAM@dslextreme.com> wrote
in message news:10s9qj5kmpdnnc0@corp.supernews.com...

"Jim Thompson" <thegreatone@example.com> wrote in message
news:umf9s0df8ggp6r4u0qfbfi64ncjevc12rd@4ax.com...
What's the best way going in today's market to introduce an external
audio source into a car radio?

I find many audio-to-FM-transmission gadgets, but no real
specifications.

Anyone with experience in this area?

(Buy, NOT build... if it was just for me I'd just hack open the radio
and add an input jack

One common adapter used the Rohm BA1404 FM stereo chip for the whole
thing, but that chip is no longer in production.

Those things sucked, sound quality wise at least. There seems to be a big
stock pile of them around, mostly in various transmitters.

It has often been
replaced by the NJM2035.

Much better, but still lacking. Also no final RF stage.

Here are all the gory details.
http://members.tripod.com/~transmitters/njm2035_1.htm


Or else they use another Rohm chip, the BH1414 or BH1416 which is PLL
and much better. Nowadays with FM radios that only step in 200 kHz
increments, the PLL seems to be necesary to keep on channel.
See http://members.tripod.com/~transmitters/rohm_bh.htm

When I get around to finishing it, I'm building a transmitter with one of
those IC's. There is one more model: BH1414. Two come with a microprocessor
interface. One comes with all kinds of bells and whistles, that's the one
I'm working with. The other ones can be set with dip switches. They tend to
use a few oddball parts, like the crystal freq, the variactor spec's, etc.
Two things to note: No MPX filter in the data sheet design, and there was
something with the way the stereo signal was created, which could have been
done a lot better.

All these RF generators are supposed to adhere to the FCC part 15 limits
for intentional radiators, blah-blah, etc.

The local car boombox hopup shop installs the gizmo in the antenna lead
under the dash, puts a wire in the fusewbox, etc. No biggie.

...Jim Thompson
--

 

[Watson A.Name - \"Watt Su]

"Jeff" <levy_jeff@hotmail.com> wrote in message
news:8Qwxd.198369$Np3.8185836@ursa-nb00s0.nbnet.nb.ca...

"Watson A.Name - "Watt Sun, the Dark Remover"" <NOSPAM@dslextreme.com
wrote
in message news:10s9qj5kmpdnnc0@corp.supernews.com...

"Jim Thompson" <thegreatone@example.com> wrote in message
news:umf9s0df8ggp6r4u0qfbfi64ncjevc12rd@4ax.com...
What's the best way going in today's market to introduce an
external
audio source into a car radio?

I find many audio-to-FM-transmission gadgets, but no real
specifications.

Anyone with experience in this area?

(Buy, NOT build... if it was just for me I'd just hack open the
radio
and add an input jack

One common adapter used the Rohm BA1404 FM stereo chip for the whole
thing, but that chip is no longer in production.

Those things sucked, sound quality wise at least. There seems to be a
big
stock pile of them around, mostly in various transmitters.

It has often been
replaced by the NJM2035.

Much better, but still lacking. Also no final RF stage.

No RF whatsoever, which keeps it out of the rest of the circuit.

Here are all the gory details.
http://members.tripod.com/~transmitters/njm2035_1.htm


Or else they use another Rohm chip, the BH1414 or BH1416 which is
PLL
and much better. Nowadays with FM radios that only step in 200 kHz
increments, the PLL seems to be necesary to keep on channel.
See http://members.tripod.com/~transmitters/rohm_bh.htm

When I get around to finishing it, I'm building a transmitter with one
of
those IC's. There is one more model: BH1414. Two come with a
microprocessor

That's what I said above.

interface. One comes with all kinds of bells and whistles, that's the
one
I'm working with. The other ones can be set with dip switches. They
tend to
use a few oddball parts, like the crystal freq, the variactor spec's,
etc.
Two things to note: No MPX filter in the data sheet design, and there
was
something with the way the stereo signal was created, which could have
been
done a lot better.

If you read the URL I gave, you would get all those details. Buy a kit
with all the parts already in it. Then make your mods.

All these RF generators are supposed to adhere to the FCC part 15
limits
for intentional radiators, blah-blah, etc.

The local car boombox hopup shop installs the gizmo in the antenna
lead
under the dash, puts a wire in the fusewbox, etc. No biggie.

...Jim Thompson
--

 

[Joel Kolstad]

"Jim Thompson" <thegreatone@example.com> wrote in message
news:umf9s0df8ggp6r4u0qfbfi64ncjevc12rd@4ax.com...
What's the best way going in today's market to introduce an external
audio source into a car radio?

I find many audio-to-FM-transmission gadgets, but no real
specifications.
Anyone with experience in this area?

In my experience, the sad fact seems to be that the only folks who'll
actually give you specs for their transmitters are... the
exciters/transmitters that are typically used by the folks in the low power
FM/pirate radio arena!

There's a guy on eBay who's been selling his own homebrew FM transmitters
for awhile now that has a decent web site with its specs:
http://www.aspisys.com/fmpll.htm . Sooner or later the FCC might get him
since his products have an obvious 'wink wink, nudge nudge' factor involved
(they're clearly in violation of FCC regulations if you, uh... attach an
antenna!), but the fact that he seems to have a good grasp of the
engineering considerations involved is promising. (As far as I can tell,
Ramsey electronics has made considerable inroads towards becoming a
'reputable' manufacturer, and they started off selling devices into similar
markets.)

I'd love to find consumer electronics such as TVs and DVD players having ANY
real detailed technical specifications included on them, but I'm not holding
my breath...

---Joel Kolstad

 

[Watson A.Name - \"Watt Su]

"Joel Kolstad" <JKolstad71HatesSpam@Yahoo.Com> wrote in message
news:8aidnY-_Q5I4DVrcRVn-vg@comcast.com...

"Jim Thompson" <thegreatone@example.com> wrote in message
news:umf9s0df8ggp6r4u0qfbfi64ncjevc12rd@4ax.com...
What's the best way going in today's market to introduce an
external
audio source into a car radio?

I find many audio-to-FM-transmission gadgets, but no real
specifications.
Anyone with experience in this area?

In my experience, the sad fact seems to be that the only folks who'll
actually give you specs for their transmitters are... the
exciters/transmitters that are typically used by the folks in the low
power
FM/pirate radio arena!

There's a guy on eBay who's been selling his own homebrew FM
transmitters
for awhile now that has a decent web site with its specs:
http://www.aspisys.com/fmpll.htm . Sooner or later the FCC might get
him
since his products have an obvious 'wink wink, nudge nudge' factor
involved

The sales of anything like that is against Ebay policy, and - if you
report it - Ebay will nix it. But Ebay won't take it upon themselves to
police their own auctions, and there have been complaints about that.
I've seen sellers successfully selling broadcast exciters, which are
_only_ allowed to be sold to those with a license or a CP (construction
permit), or for 'export' outside the U.S. But this still slips under
the Ebay radar, all the time.

(they're clearly in violation of FCC regulations if you, uh... attach
an
antenna!), but the fact that he seems to have a good grasp of the
engineering considerations involved is promising. (As far as I can
tell,
Ramsey electronics has made considerable inroads towards becoming a
'reputable' manufacturer, and they started off selling devices into
similar
markets.)

All the Ramsey stuff was within Part 15.

I'd love to find consumer electronics such as TVs and DVD players
having ANY
real detailed technical specifications included on them, but I'm not
holding
my breath...

---Joel Kolstad

 

[Rich Grise]

On Mon, 20 Dec 2004 22:21:36 -0800, Watson A.Name - "Watt Sun, the Dark
Remover" wrote:

"Joel Kolstad" <JKolstad71HatesSpam@Yahoo.Com> wrote in message
"Jim Thompson" <thegreatone@example.com> wrote in message
What's the best way going in today's market to introduce an
external
audio source into a car radio?
....
In my experience, the sad fact seems to be that the only folks who'll
actually give you specs for their transmitters are... the
exciters/transmitters that are typically used by the folks in the low
power
FM/pirate radio arena!

There's a guy on eBay who's been selling his own homebrew FM
transmitters
for awhile now that has a decent web site with its specs:
http://www.aspisys.com/fmpll.htm . Sooner or later the FCC might get
him
since his products have an obvious 'wink wink, nudge nudge' factor
involved

The sales of anything like that is against Ebay policy, and - if you
report it - Ebay will nix it. But Ebay won't take it upon themselves to
police their own auctions, and there have been complaints about that.
I've seen sellers successfully selling broadcast exciters, which are
_only_ allowed to be sold to those with a license or a CP (construction
permit), or for 'export' outside the U.S. But this still slips under
the Ebay radar, all the time.

I had a weird thing happen at ebay. I had an old used book, "Linux for
Dummies" or something, that I didn't need, so I put it on ebay with a
buy-it-now of $0.01, about $4.00 shipping.

I got an email from ebay saying that the publishers of the book were
complaining about a copyright infringement!

How stupid can they get? What got copied? I'm giving away a book that the
publishers have already been paid for!

But I let it go, and found some local guy to come over and pick it up,
along with a couple of other books I didn't need.

Cheers!
Rich

 

[Spehro Pefhany]

On Tue, 21 Dec 2004 12:30:26 -0800, the renowned "Richard Crowley"
<rcrowley7@xprt.net> wrote:

"Rich Grise" wrote ...
I had a weird thing happen at ebay. I had an old used book, "Linux for
Dummies" or something, that I didn't need, so I put it on ebay with a
buy-it-now of $0.01, about $4.00 shipping.

I got an email from ebay saying that the publishers of the book were
complaining about a copyright infringement!

How stupid can they get? What got copied? I'm giving away a book that the
publishers have already been paid for!

Are you sure? This just sounds too incredible on all levels.
Maybe the publishers' lawyers are just bullying eBay's lawyers,
but I would think that eBay would be smarter than that.

http://pages.ebay.com/help/confidence/vero-rights-owner.html
http://pages.ebay.com/help/confidence/vero-removed-listing.html

As you can see, they don't really want to get involved, and cancelling
listings that are claimed to infringe is the least they can do.


Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
speff@interlog.com Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com

 

[Richard Crowley]

"Spehro Pefhany" <speffSNIP@interlogDOTyou.knowwhat> wrote in message
newsc6hs05krg7mphkrkal72cnqp26j7jnujr@4ax.com...

On Tue, 21 Dec 2004 12:30:26 -0800, the renowned "Richard Crowley"
rcrowley7@xprt.net> wrote:

"Rich Grise" wrote ...
I had a weird thing happen at ebay. I had an old used book, "Linux for
Dummies" or something, that I didn't need, so I put it on ebay with a
buy-it-now of $0.01, about $4.00 shipping.

I got an email from ebay saying that the publishers of the book were
complaining about a copyright infringement!

How stupid can they get? What got copied? I'm giving away a book that
the
publishers have already been paid for!

Are you sure? This just sounds too incredible on all levels.
Maybe the publishers' lawyers are just bullying eBay's lawyers,
but I would think that eBay would be smarter than that.

http://pages.ebay.com/help/confidence/vero-rights-owner.html
http://pages.ebay.com/help/confidence/vero-removed-listing.html

As you can see, they don't really want to get involved, and cancelling
listings that are claimed to infringe is the least they can do.

What is wrong with this picture (from the 2nd URL above)...

"...we removed the listing because that rights owner identified your
listing, under penalty of perjury, as offering an item or containing
material that infringes their intellectual property rights..."

"Unfortunately, eBay cannot require the rights owner to provide you
with the exact reason of the request to remove your listing."

"Under penalty of perjury", but "don't know the exact reason"? Huh?
No danger of any perjury there. If the publisher doesn't want the
competition from you selling your legal copy, eBay will be very
happy to violate your 1st amendment rights. What a crock of
manure.

 

[buck rojerz]

Spehro Pefhany <speffSNIP@interlogDOTyou.knowwhat> wrote in
newsc6hs05krg7mphkrkal72cnqp26j7jnujr@4ax.com:

On Tue, 21 Dec 2004 12:30:26 -0800, the renowned "Richard Crowley"
rcrowley7@xprt.net> wrote:

"Rich Grise" wrote ...
I had a weird thing happen at ebay. I had an old used book, "Linux
for Dummies" or something, that I didn't need, so I put it on ebay
with a buy-it-now of $0.01, about $4.00 shipping.

I got an email from ebay saying that the publishers of the book were
complaining about a copyright infringement!

How stupid can they get? What got copied? I'm giving away a book
that the publishers have already been paid for!

Are you sure? This just sounds too incredible on all levels.
Maybe the publishers' lawyers are just bullying eBay's lawyers,
but I would think that eBay would be smarter than that.

http://pages.ebay.com/help/confidence/vero-rights-owner.html
http://pages.ebay.com/help/confidence/vero-removed-listing.html

As you can see, they don't really want to get involved, and cancelling
listings that are claimed to infringe is the least they can do.


Best regards,
Spehro Pefhany

Never let it be said, that they didn't do the least they could do.

 

[Richard Crowley]

"mc" <mc_no_spam@uga.edu> wrote in message
news:41d6cbf1$1@mustang.speedfactory.net...

"Rich Grise" wrote ...
I had a weird thing happen at ebay. I had an old used book, "Linux
for Dummies" or something, that I didn't need, so I put it on ebay
with a buy-it-now of $0.01, about $4.00 shipping.

I got an email from ebay saying that the publishers of the book
were
complaining about a copyright infringement!

How stupid can they get? What got copied? I'm giving away a book
that the publishers have already been paid for!

I wonder if the book was (or was thought to be) a pirated edition. In
that case, any further redistribution of it would be illegal.

Or maybe someone is selling pirated copies of that book on eBay, and
you were mistaken for part of that.

We'll have to leave the price stickers on our books (*) and keep
the cash-register receipt taped inside the cover as proof that our
books aren't pirated.

But I suppose that if you were industrious, you could pirate the
price stickers and cash-register receipts as well.

(*) And you thought that Minnie Pearl was crazy for leaving the
price tag hanging from her hat.

 

[Rich Grise]

On Sat, 01 Jan 2005 10:50:50 -0500, mc wrote:

"Rich Grise" wrote ...
I had a weird thing happen at ebay. I had an old used book, "Linux
for Dummies" or something, that I didn't need, so I put it on ebay
with a buy-it-now of $0.01, about $4.00 shipping.

I got an email from ebay saying that the publishers of the book were
complaining about a copyright infringement!

How stupid can they get? What got copied? I'm giving away a book
that the publishers have already been paid for!

I wonder if the book was (or was thought to be) a pirated edition. In that
case, any further redistribution of it would be illegal.

Well, I ass-u-me that Border's wouldn't have sold a pirated book.

Or maybe someone is selling pirated copies of that book on eBay, and you
were mistaken for part of that.

I think it's just that the people who published "Linux for Dummies" are
morons.

Cheers!
Rich

 

[mc]

"Spehro Pefhany" <speffSNIP@interlogDOTyou.knowwhat> wrote in message
news:2oqgt09q5m6gjnoafv4865osptuahalb1l@4ax.com...

There was a guy selling low cost editions of some technical books
(made for the Indian region) on eBay, and he got his account
cancelled.

Right... the way copyright law works, different publishers can have the
rights to the same book in different countries, and it's common for low-cost
editions to be issued in India that are not for sale in the UK or US. This
is partly to discourage local piracy, which used to be common in Asia.

Anyhow, the upshot of it is that on eBay (and anywhere else), you cannot
sell, at retail, these cheap editions. One-off sale of copies that were
brought here for an individual's use is OK; importing them for resale is
not.

 

[Rich Grise]

On Sun, 02 Jan 2005 17:41:42 -0500, mc wrote:

"Spehro Pefhany" <speffSNIP@interlogDOTyou.knowwhat> wrote in message
news:2oqgt09q5m6gjnoafv4865osptuahalb1l@4ax.com...

There was a guy selling low cost editions of some technical books
(made for the Indian region) on eBay, and he got his account
cancelled.

Right... the way copyright law works, different publishers can have the
rights to the same book in different countries, and it's common for low-cost
editions to be issued in India that are not for sale in the UK or US. This
is partly to discourage local piracy, which used to be common in Asia.

Anyhow, the upshot of it is that on eBay (and anywhere else), you cannot
sell, at retail, these cheap editions. One-off sale of copies that were
brought here for an individual's use is OK; importing them for resale is
not.

When I was in the USAF, late 1960's-early 1970's, Taiwan was big on
pirated books. So big, in fact, that they specifically checked for them at
customs. I got a couple through by explaining to the customs guy, "Who
would buy a book like this at full price anyway?" One was "The Sensuous
Dirty Old Man by Dr. A."; Dr. A was Isaac Asimov, pictured on the back
with a bra for a blindfold. It was quite clever, as are all of The Good
Doctor's works. The other one was some electronics circuits tome, that
nobody cares about anyway. ;-) I no longer have either book. )-;

Cheers!
Rich