View Full Version : Connect FM radio to CATV?
RedFox
April 18th 05, 10:09 PM
Hello experts,
I have a 20 y.o.Sony receiver and am able to receive radio stations when I
connect the two terminals of the cable across a 300 ohm (clearly marked on
the back of
the unit) antenna connector.
A friend has a compact JVC model FS-1000 hi-fi unit that has radio, cd and
tape
drives and it has 4 antenna connections. The A.M. antenna is connected to
one
pair of adjacent connections - say 1 and 2. The F.M.antenna is a 2' piece
of tiny
cable is connected to the 3rd connection and the 4th is free. The 3rd and
4th are
adjacent connections. I tried to find a manual for the JVC but failed. I
could just
simply connect the CATV cable across 3 and 4 but would prefer to have some
info
before doing this.
Does anyone about the 3rd and 4th connectors? Are they intended for an FM
antenna and is there a standard resistor across them?
TIA
RF
Todd H.
April 18th 05, 11:28 PM
"RedFox" > writes:
> Hello experts,
>
> I have a 20 y.o.Sony receiver and am able to receive radio stations when I
> connect the two terminals of the cable across a 300 ohm (clearly marked on
> the back of
> the unit) antenna connector.
>
> A friend has a compact JVC model FS-1000 hi-fi unit that has radio, cd and
> tape
> drives and it has 4 antenna connections. The A.M. antenna is connected to
> one
> pair of adjacent connections - say 1 and 2. The F.M.antenna is a 2' piece
> of tiny
> cable is connected to the 3rd connection and the 4th is free. The 3rd and
> 4th are
> adjacent connections. I tried to find a manual for the JVC but failed. I
> could just
> simply connect the CATV cable across 3 and 4 but would prefer to have some
> info
> before doing this.
>
> Does anyone about the 3rd and 4th connectors? Are they intended for an FM
> antenna and is there a standard resistor across them?
If these are screw terminals, you need two wires to make an FM antenna
connection, so it's reasonable to assume screw terminals 3 and 4 are
the pair you'd use for 300ohm antenna lead (just like on our sony).
However, many modern receivers only provide a 75ohm coaxial input for
an FM antenna. In which case you need the little dohicky that
provides a 75ohm connector to a pair of 300ohm screw terminals to use
an antenna that has two spade lugs on it.
In the terminal block of the receiver, the other connection you
sometimes get with a screw terminal is that for a phono ground lead.
Perhaps with this you can figure it out. You'll know you've got it
right when you start receiving FM stations correctly. Hooking up an
antenna to the phono ground terminal won't hurt a thing.
--
/"\ ASCII Ribbon Campaign | Todd H
\ / | http://www.toddh.net/
X Promoting good netiquette | http://triplethreatband.com/
/ \ http://www.toddh.net/netiquette/ | "4 lines suffice."
RedFox
April 19th 05, 02:46 AM
"Todd H." > wrote in message
...
> "RedFox" > writes:
> > Hello experts,
> >
> > I have a 20 y.o.Sony receiver and am able to receive radio stations when
I
> > connect the two terminals of the cable across a 300 ohm (clearly marked
on
> > the back of
> > the unit) antenna connector.
> >
> > A friend has a compact JVC model FS-1000 hi-fi unit that has radio, cd
and
> > tape
> > drives and it has 4 antenna connections. The A.M. antenna is connected
to
> > one
> > pair of adjacent connections - say 1 and 2. The F.M.antenna is a 2'
piece
> > of tiny
> > cable is connected to the 3rd connection and the 4th is free. The 3rd
and
> > 4th are
> > adjacent connections. I tried to find a manual for the JVC but failed. I
> > could just
> > simply connect the CATV cable across 3 and 4 but would prefer to have
some
> > info
> > before doing this.
> >
> > Does anyone about the 3rd and 4th connectors? Are they intended for an
FM
> > antenna and is there a standard resistor across them?
>
> If these are screw terminals, you need two wires to make an FM antenna
> connection, so it's reasonable to assume screw terminals 3 and 4 are
> the pair you'd use for 300ohm antenna lead (just like on our sony).
>
> However, many modern receivers only provide a 75ohm coaxial input for
> an FM antenna. In which case you need the little dohicky that
> provides a 75ohm connector to a pair of 300ohm screw terminals to use
> an antenna that has two spade lugs on it.
>
> In the terminal block of the receiver, the other connection you
> sometimes get with a screw terminal is that for a phono ground lead.
>
> Perhaps with this you can figure it out. You'll know you've got it
> right when you start receiving FM stations correctly. Hooking up an
> antenna to the phono ground terminal won't hurt a thing.
>
> --
> /"\ ASCII Ribbon Campaign | Todd H
> \ / | http://www.toddh.net/
> X Promoting good netiquette | http://triplethreatband.com/
> / \ http://www.toddh.net/netiquette/ | "4 lines suffice."
Thanks Todd for the quick reply,
The Sony receiver has a 75 ohm connector too. I can't remember how I decided
to use the 300 connector but it works fine.
Both the Sony and the JVC units have spring loaded clips that are pressed to
allow the wire to enter a hole and when the clip is released the wire is
gripped. None have a terminal with a screw.
I'll check with the local electronics store about the extra connector you
mentioned.
Thanks again for the help.
rf
Todd H.
April 19th 05, 03:22 AM
"RedFox" > writes:
> Thanks Todd for the quick reply,
>
> The Sony receiver has a 75 ohm connector too. I can't remember how I decided
> to use the 300 connector but it works fine.
>
> Both the Sony and the JVC units have spring loaded clips that are pressed to
> allow the wire to enter a hole and when the clip is released the wire is
> gripped. None have a terminal with a screw.
Ah. Okay, these are 300ohm connectors as well, but they accept tinned
wires and don't need those spade lugs that are used with the screw
type terminals.
What kind of termination does your FM antenna have? Does it have 2 U
shaped spade lugs, or two pieces of wire, or a co-ax connector?
> I'll check with the local electronics store about the extra connector you
> mentioned.
You shouldn't need that connector actually if you're willing to modify
the antenna simply.
If your antenna has the U shaped spade lugs, just clip them off and
strip the wires at the end, and insert the wires into the spring
terminals. If you have a soldering iron and can "tin" these wires to
make them hard, it works better.
Or, if you have that 75 ohm connector on the receiver, the connector
you want is available at Radio shack for $4 that'll let you screw the
spade lugs down to it with no problem:
http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&product%5Fid=15-1253
--
/"\ ASCII Ribbon Campaign | Todd H
\ / | http://www.toddh.net/
X Promoting good netiquette | http://triplethreatband.com/
/ \ http://www.toddh.net/netiquette/ | "4 lines suffice."
Todd H.
April 19th 05, 04:22 AM
(Todd H.) writes:
> Or, if you have that 75 ohm connector on the receiver, the connector
> you want is available at Radio shack for $4 that'll let you screw the
> spade lugs down to it with no problem:
> http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&product%5Fid=15-1253
FWIW, this same part can be had for 60 cents from partsexpress. ANd
these folks have plenty of other goodies ya might want to justify the
shipping. :-)
http://www.partsexpress.com/pe/pshowdetl.cfm?&DID=7&Partnumber=180-025
--
/"\ ASCII Ribbon Campaign | Todd H
\ / | http://www.toddh.net/
X Promoting good netiquette | http://triplethreatband.com/
/ \ http://www.toddh.net/netiquette/ | "4 lines suffice."
RedFox
April 19th 05, 07:20 PM
"Todd H." > wrote in message
...
> (Todd H.) writes:
>
> > Or, if you have that 75 ohm connector on the receiver, the connector
> > you want is available at Radio shack for $4 that'll let you screw the
> > spade lugs down to it with no problem:
> >
http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&product%5Fid=15-12
53
>
> FWIW, this same part can be had for 60 cents from partsexpress. ANd
> these folks have plenty of other goodies ya might want to justify the
> shipping. :-)
>
http://www.partsexpress.com/pe/pshowdetl.cfm?&DID=7&Partnumber=180-025
>
>
>
> --
> /"\ ASCII Ribbon Campaign | Todd H
> \ / | http://www.toddh.net/
> X Promoting good netiquette | http://triplethreatband.com/
> / \ http://www.toddh.net/netiquette/ | "4 lines suffice."
Thanks again Todd for your support. I have no spade lugs and there never was
a real FM antenna.
There is only a 2' length of thin wire in one of the FM connections right
now.
What would be helpful is a connector that would screw onto the end of the TV
cable and has two wires that I could push into the antenna connectors on the
unit.
Will check into the connectors you suggested.
Thanks - you're a pal :-)
rf
Todd H.
April 19th 05, 07:38 PM
"RedFox" > writes:
> Thanks again Todd for your support. I have no spade lugs and there never was
> a real FM antenna.
> There is only a 2' length of thin wire in one of the FM connections right
> now.
Ah. If yer at parts express, just add on one of these for a whopping
85 cents:
http://www.partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=210-020
I've made my own antennae for FM befor using 300ohm TV wire though.
Fashion a T crossbar of about 14" in length, and strip the center
wires of the cross bar to splice onto the lead that runs to the
stereo. But if you don't already have it, may as well just buy a
good dipole above for less than a buck. :-)
> What would be helpful is a connector that would screw onto the end
> of the TV cable and has two wires that I could push into the antenna
> connectors on the unit.
Like this? If by TV cable you mean co-ax cable, use this and just
clip off the spades and strip off 1/2" of insulation to pop them into
those spring terminals.
http://www.partsexpress.com/pe/pshowdetl.cfm?&DID=7&Partnumber=180-010
It's the inverse of this guy:
http://www.partsexpress.com/pe/showdetl.cfm?DID=7&PartNumber=180-025
> Will check into the connectors you suggested.
>
> Thanks - you're a pal :-)
Hee hee. Thanks for the kind words. Depending on yer outlook, I'm
either a pal or a comedian who's been somehow likened to the most vile
of all criminals.
Best Regards,
--
/"\ ASCII Ribbon Campaign | Todd H
\ / | http://www.toddh.net/
X Promoting good netiquette | http://triplethreatband.com/
/ \ http://www.toddh.net/netiquette/ | "4 lines suffice."
Gary A. Edelstein
April 19th 05, 10:15 PM
On Mon, 18 Apr 2005 21:09:08 GMT, "RedFox" > wrote:
>Hello experts,
>
>I have a 20 y.o.Sony receiver and am able to receive radio stations when I
>connect the two terminals of the cable across a 300 ohm (clearly marked on
>the back of
>the unit) antenna connector.
>
>A friend has a compact JVC model FS-1000 hi-fi unit that has radio, cd and
>tape
>drives and it has 4 antenna connections. The A.M. antenna is connected to
>one
>pair of adjacent connections - say 1 and 2. The F.M.antenna is a 2' piece
>of tiny
>cable is connected to the 3rd connection and the 4th is free. The 3rd and
>4th are
>adjacent connections. I tried to find a manual for the JVC but failed. I
>could just
>simply connect the CATV cable across 3 and 4 but would prefer to have some
>info
>before doing this.
>
>Does anyone about the 3rd and 4th connectors? Are they intended for an FM
>antenna and is there a standard resistor across them?
>
Does the JVC have any labels below the antenna connection points?
Typically for FM 2 of them are for 300 ohm and a different 2 are for
75 ohm common and ground. I find it cleaner to use a 75 to 300 ohm
transformer for situations like yours and hook up the 2 300 ohm leads
instead of trying to strip a 75 ohm wire.
Gary E
--
|Gary A. Edelstein
(remove NO SPAM and .invalid to reply)
|"We have met the enemy and he is us." - Walt Kelly's Pogo
Dimitrios Tzortzakakis
April 20th 05, 02:03 PM
If I understand correctly, the JVC has an AM antenna terminal and a 75 ohm
connector for FM, but you didn't plug it to the wall receptacle with a cable
having a male and a female plug on opposite ends, you used the cable that
came with it when you bought it.I don't know if you need a special receiver
for cable radio, there's no cable tv in Europe.But for as little as 10 euro,
you can get an FM antenna on the roof (like the TV one) and pass the signal
through the tv cable.When you say resistance, you mean the
impendance?Impendance is resistance+reactance, similar to resistance but in
AC circuits.The impendance of a cable should match to that of the input,
thus 75 ohm cable+75 ohm connectors match the 75 ohm input.
--
Tzortzakakis Dimitrios
major in electrical engineering, freelance electrician
FH von Iraklion-Kreta, freiberuflicher Elektriker
dimtzort AT otenet DOT gr
Ο "RedFox" > έγραψε στο μήνυμα
ink.net...
> Hello experts,
>
> I have a 20 y.o.Sony receiver and am able to receive radio stations when I
> connect the two terminals of the cable across a 300 ohm (clearly marked on
> the back of
> the unit) antenna connector.
>
> A friend has a compact JVC model FS-1000 hi-fi unit that has radio, cd and
> tape
> drives and it has 4 antenna connections. The A.M. antenna is connected to
> one
> pair of adjacent connections - say 1 and 2. The F.M.antenna is a 2' piece
> of tiny
> cable is connected to the 3rd connection and the 4th is free. The 3rd and
> 4th are
> adjacent connections. I tried to find a manual for the JVC but failed. I
> could just
> simply connect the CATV cable across 3 and 4 but would prefer to have some
> info
> before doing this.
>
> Does anyone about the 3rd and 4th connectors? Are they intended for an FM
> antenna and is there a standard resistor across them?
>
> TIA
>
> RF
>
>
>
>
RedFox
April 20th 05, 08:35 PM
"Gary A. Edelstein" > wrote in message
...
> On Mon, 18 Apr 2005 21:09:08 GMT, "RedFox" > wrote:
>
> >Hello experts,
> >
> >I have a 20 y.o.Sony receiver and am able to receive radio stations when
I
> >connect the two terminals of the cable across a 300 ohm (clearly marked
on
> >the back of
> >the unit) antenna connector.
> >
> >A friend has a compact JVC model FS-1000 hi-fi unit that has radio, cd
and
> >tape
> >drives and it has 4 antenna connections. The A.M. antenna is connected to
> >one
> >pair of adjacent connections - say 1 and 2. The F.M.antenna is a 2'
piece
> >of tiny
> >cable is connected to the 3rd connection and the 4th is free. The 3rd and
> >4th are
> >adjacent connections. I tried to find a manual for the JVC but failed. I
> >could just
> >simply connect the CATV cable across 3 and 4 but would prefer to have
some
> >info
> >before doing this.
> >
> >Does anyone about the 3rd and 4th connectors? Are they intended for an FM
> >antenna and is there a standard resistor across them?
> >
> Does the JVC have any labels below the antenna connection points?
> Typically for FM 2 of them are for 300 ohm and a different 2 are for
> 75 ohm common and ground. I find it cleaner to use a 75 to 300 ohm
> transformer for situations like yours and hook up the 2 300 ohm leads
> instead of trying to strip a 75 ohm wire.
>
> Gary E
> --
> |Gary A. Edelstein
> (remove NO SPAM and .invalid to reply)
> |"We have met the enemy and he is us." - Walt Kelly's Pogo
Thanks Todd and Gary.
I had a look at the Sony connection and realized that I had bought a little
twist-on F connector. I cut a 2" piece off a coax cable and attached it to
that connector and then pushed the free ends of the 2" cable into the Sony
300 ohm connectors. This system connects to the existing house coax wiring
and works fine.
The coax cable I'm trying to connect the JVC with is RG59/U. I had a better
look at the JVC and found markings at the side (nothing on the back) - it
says 75 ohm
connection and the lower one is the ground. Is that the shield on the cable?
Apologies for getting this information out so slowly.
It seems that I need the 75 to 300 ohm transformer as Gary suggested. I
visited OSH this morning and picked up a 75-300 ohm transformer for $2.
The info with it says it is for connecting a 75 ohm cable to a 300 ohm
device.
The cable end has a threaded part that should connect to the F connector on
the
coax cable. The other end has two flat spade lugs - not sure if this is the
right description.
I could remove them and plug the wires into the rear of the JVC unit. My
question is
whether this is the right way around to connect this transformer.
Thanks Dimitrious for your contribution. Cable often has FM stations that
are
out of the area so there are usually many more stations available than can
be pulled in with
a small antenna. The coax (TV) cable is attached to the 300 ohm connector on
the Sony and it
works well.
rf
Mark D. Zacharias
April 21st 05, 10:54 AM
RedFox wrote:
> Hello experts,
>
> I have a 20 y.o.Sony receiver and am able to receive radio stations
> when I connect the two terminals of the cable across a 300 ohm
> (clearly marked on the back of
> the unit) antenna connector.
>
> A friend has a compact JVC model FS-1000 hi-fi unit that has radio,
> cd and tape
> drives and it has 4 antenna connections. The A.M. antenna is
> connected to one
> pair of adjacent connections - say 1 and 2. The F.M.antenna is a 2'
> piece of tiny
> cable is connected to the 3rd connection and the 4th is free. The 3rd
> and 4th are
> adjacent connections. I tried to find a manual for the JVC but
> failed. I could just
> simply connect the CATV cable across 3 and 4 but would prefer to have
> some info
> before doing this.
>
> Does anyone about the 3rd and 4th connectors? Are they intended for
> an FM antenna and is there a standard resistor across them?
>
> TIA
>
> RF
Just get a 75 ohm to 300 ohm adapter (balun), or otherwise get the signal
into those two inputs with bare wire. Usually, on those 4-connector inputs,
2 adjacent are for AM, the other 2 are for FM. Because everything is so
cheap these days, there is no longer a 300 ohm balun internally. In practive
it probably doesn't matter whether you use a proper balun or bare wire to
get it in there.
Mark Z.
Gary A. Edelstein
April 21st 05, 07:10 PM
On Wed, 20 Apr 2005 19:35:45 GMT, "RedFox" > wrote:
>The coax cable I'm trying to connect the JVC with is RG59/U. I had a better
>look at the JVC and found markings at the side (nothing on the back) - it
>says 75 ohm
>connection and the lower one is the ground. Is that the shield on the cable?
>
The 75 ohm connection is the center of teh RG59 and yes the ground is
the shield on that cable. That will work if you want to strip the
wires.
>It seems that I need the 75 to 300 ohm transformer as Gary suggested. I
>visited OSH this morning and picked up a 75-300 ohm transformer for $2.
>The info with it says it is for connecting a 75 ohm cable to a 300 ohm
>device.
>The cable end has a threaded part that should connect to the F connector on
>the
>coax cable. The other end has two flat spade lugs - not sure if this is the
>right description.
>I could remove them and plug the wires into the rear of the JVC unit. My
>question is
>whether this is the right way around to connect this transformer.
>
If you use the transformer then the 2 spade lug ends (you can cut the
lugs off and strip the wires if you want) go to a twin 300 ohm
connection, not the 75 ohm one you described as having markings on the
JVC.
Gary E
--
|Gary A. Edelstein
(remove NO SPAM and .invalid to reply)
|"We have met the enemy and he is us." - Walt Kelly's Pogo
RedFox
April 21st 05, 08:49 PM
"Gary A. Edelstein" > wrote in message
...
> On Wed, 20 Apr 2005 19:35:45 GMT, "RedFox" > wrote:
>
> >The coax cable I'm trying to connect the JVC with is RG59/U. I had a
better
> >look at the JVC and found markings at the side (nothing on the back) - it
> >says 75 ohm
> >connection and the lower one is the ground. Is that the shield on the
cable?
> >
> The 75 ohm connection is the center of teh RG59 and yes the ground is
> the shield on that cable. That will work if you want to strip the
> wires.
>
> >It seems that I need the 75 to 300 ohm transformer as Gary suggested. I
> >visited OSH this morning and picked up a 75-300 ohm transformer for $2.
> >The info with it says it is for connecting a 75 ohm cable to a 300 ohm
> >device.
> >The cable end has a threaded part that should connect to the F connector
on
> >the
> >coax cable. The other end has two flat spade lugs - not sure if this is
the
> >right description.
> >I could remove them and plug the wires into the rear of the JVC unit. My
> >question is
> >whether this is the right way around to connect this transformer.
> >
> If you use the transformer then the 2 spade lug ends (you can cut the
> lugs off and strip the wires if you want) go to a twin 300 ohm
> connection, not the 75 ohm one you described as having markings on the
> JVC.
>
> Gary E
> --
> |Gary A. Edelstein
> (remove NO SPAM and .invalid to reply)
> |"We have met the enemy and he is us." - Walt Kelly's Pogo
Thanks Gary.
Ouch! There is no 300 ohm connection on the JVC. It is 75. I had connected
the same coax cable directly to the 300 ohm connection on the Sony. I
removed a short section of the cable and the adapter from the Sony and used
it to connect to the 75 ohm connection on the JVC It works fine but some
stations are a bit noisy - they also were noisy on the Sony. I don't really
understand why the same cable works with the 75 ohm connector on the JVC
and with the 300 ohm on the Sony??????
Finally, is there a noise filter I could use ?- for the audio, of course.
rf
Gary A. Edelstein
April 22nd 05, 05:02 PM
On Thu, 21 Apr 2005 19:49:21 GMT, "RedFox" > wrote:
>Thanks Gary.
>
>Ouch! There is no 300 ohm connection on the JVC. It is 75. I had connected
>the same coax cable directly to the 300 ohm connection on the Sony. I
>removed a short section of the cable and the adapter from the Sony and used
>it to connect to the 75 ohm connection on the JVC It works fine but some
>stations are a bit noisy - they also were noisy on the Sony. I don't really
>understand why the same cable works with the 75 ohm connector on the JVC
>and with the 300 ohm on the Sony??????
>
>Finally, is there a noise filter I could use ?- for the audio, of course.
>
I'd guess the source is noisy. Are you sure the cable co. actually
retransmits the FM stations? It could be the wires are acting as sort
of a poor antenna. If they do retransmit them, then the problem is
likely with them. Probably the only thing you could do then is switch
off FM stereo and go to mono, if available on your receiver.
Gary E
--
|Gary A. Edelstein
(remove NO SPAM and .invalid to reply)
|"We have met the enemy and he is us." - Walt Kelly's Pogo
RedFox
April 23rd 05, 05:56 AM
"Gary A. Edelstein" > wrote in message
...
> On Thu, 21 Apr 2005 19:49:21 GMT, "RedFox" > wrote:
>
> >Thanks Gary.
> >
> >Ouch! There is no 300 ohm connection on the JVC. It is 75. I had
connected
> >the same coax cable directly to the 300 ohm connection on the Sony. I
> >removed a short section of the cable and the adapter from the Sony and
used
> >it to connect to the 75 ohm connection on the JVC It works fine but some
> >stations are a bit noisy - they also were noisy on the Sony. I don't
really
> >understand why the same cable works with the 75 ohm connector on the JVC
> >and with the 300 ohm on the Sony??????
> >
> >Finally, is there a noise filter I could use ?- for the audio, of course.
> >
> I'd guess the source is noisy. Are you sure the cable co. actually
> retransmits the FM stations? It could be the wires are acting as sort
> of a poor antenna. If they do retransmit them, then the problem is
> likely with them. Probably the only thing you could do then is switch
> off FM stereo and go to mono, if available on your receiver.
>
> Gary E
> --
> |Gary A. Edelstein
> (remove NO SPAM and .invalid to reply)
> |"We have met the enemy and he is us." - Walt Kelly's Pogo
Thanks again Gary.
I'll check with Comcast about how they get the stations on the cable.
Enjoy the weekend :-)
rf
RedFox
April 25th 05, 05:28 PM
I needed to cut that catv cable to the JVC unit and was astonished Modern
cables, or at least the one I have, have a sheath that is made up of a
silver foil plus a number of extremely fine copper wires around it. In older
cables I could twist the sheath wires and they formed a reasonable
conductor. Now, the result is crap. Back to the drawing board to find a
connector :-(
rf
"Mark D. Zacharias" > wrote in message
news:1114077273.77f2d02c82c7991cada2b9c2e903b885@t eranews...
> RedFox wrote:
> > Hello experts,
> >
> > I have a 20 y.o.Sony receiver and am able to receive radio stations
> > when I connect the two terminals of the cable across a 300 ohm
> > (clearly marked on the back of
> > the unit) antenna connector.
> >
> > A friend has a compact JVC model FS-1000 hi-fi unit that has radio,
> > cd and tape
> > drives and it has 4 antenna connections. The A.M. antenna is
> > connected to one
> > pair of adjacent connections - say 1 and 2. The F.M.antenna is a 2'
> > piece of tiny
> > cable is connected to the 3rd connection and the 4th is free. The 3rd
> > and 4th are
> > adjacent connections. I tried to find a manual for the JVC but
> > failed. I could just
> > simply connect the CATV cable across 3 and 4 but would prefer to have
> > some info
> > before doing this.
> >
> > Does anyone about the 3rd and 4th connectors? Are they intended for
> > an FM antenna and is there a standard resistor across them?
> >
> > TIA
> >
> > RF
>
> Just get a 75 ohm to 300 ohm adapter (balun), or otherwise get the signal
> into those two inputs with bare wire. Usually, on those 4-connector
inputs,
> 2 adjacent are for AM, the other 2 are for FM. Because everything is so
> cheap these days, there is no longer a 300 ohm balun internally. In
practive
> it probably doesn't matter whether you use a proper balun or bare wire to
> get it in there.
>
> Mark Z.
>
>
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