300-75ohm baluns for fm reception?

**thorny** · 04-05-08, 06:03 PM

these are the little baluns used to hook up the ladder/ribbon aerial cable to a coax input tele (i think)

on my stereo i have the typical T wire antenna (for need of a better name!), can i use the 75/300 balun in reverse to get fm reception for my stereo from the roof aerial? the roof aerial runs into quad shield coax

**bit_pit** · 04-05-08, 08:21 PM

Sure,
I've even used these with one on each end of 300 ohm ribbon when i needed a temporary run that was just a bit longer than the coax I had on hand..

**soap** · 04-05-08, 08:53 PM

yes FM is transmitted upon the same frequencies as TV stations, thus your antenna will pick them up. AM is left out in the cold and is only ever good through a car radio in my experience.

**ramrod** · 06-05-08, 10:42 PM

Quote:

Originally Posted by thorny

these are the little baluns used to hook up the ladder/ribbon aerial cable to a coax input tele (i think)

on my stereo i have the typical T wire antenna (for need of a better name!), can i use the 75/300 balun in reverse to get fm reception for my stereo from the roof aerial? the roof aerial runs into quad shield coax

Should work fine that "T wire connector is normally a coax f type plug.

**thorny** · 07-05-08, 05:55 PM

Quote:

Originally Posted by ramrod

Should work fine that "T wire connector is normally a coax f type plug.

not sure what you mean there...

**ramrod** · 07-05-08, 08:58 PM

Sorry mate I mean its normally a coax PAL male plug

**Coey_4** · 07-07-08, 12:18 AM

Hi Thorny;

The T wire you are talking about is often a Folded Dipole antenna it has a centre impedance of about 300 Ohms (same impedance as ribbon cable) so if you want to connect it to 75-Ohm RG 6 Quad sheild coax you have the right tool the little baluns are ideal for the task. I think Ramrod was trying to confuse you with the F Connector comment he sounds like a Pay TV installer :-)

**cwispy** · 07-07-08, 12:35 AM

You could use the one in there in reverse or you could buy

Jaycar Electronics

if you have a wall plate you can even get one with a fm bleed off.

Altronics - Your One Stop Electronics Shop

04-05-08, 06:03 PM	#1 (permalink)
thorny Junior Member iTrader: (0) Join Date: Mar 2008 Posts: 7 Spent time on board: 0:21:33	300-75ohm baluns for fm reception? these are the little baluns used to hook up the ladder/ribbon aerial cable to a coax input tele (i think) on my stereo i have the typical T wire antenna (for need of a better name!), can i use the 75/300 balun in reverse to get fm reception for my stereo from the roof aerial? the roof aerial runs into quad shield coax Last edited by thorny : 04-05-08 at 06:06 PM. Reason: added reference image

04-05-08, 08:21 PM	#2 (permalink)
bit_pit Senior Member iTrader: (1) Join Date: Jan 2008 Location: Sydney, Western Suburbs Posts: 109 Spent time on board: -	Sure, I've even used these with one on each end of 300 ohm ribbon when i needed a temporary run that was just a bit longer than the coax I had on hand.. __________________ Comfortably numb... And NO, Google is NOT my friend...

07-07-08, 12:18 AM	#7 (permalink)
Coey_4 Junior Member iTrader: (0) Join Date: Jul 2008 Posts: 1 Spent time on board: -	Baluns Hi Thorny; The T wire you are talking about is often a Folded Dipole antenna it has a centre impedance of about 300 Ohms (same impedance as ribbon cable) so if you want to connect it to 75-Ohm RG 6 Quad sheild coax you have the right tool the little baluns are ideal for the task. I think Ramrod was trying to confuse you with the F Connector comment he sounds like a Pay TV installer :-)

07-07-08, 12:35 AM	#8 (permalink)
cwispy Premium Member iTrader: (12) Join Date: Jan 2008 Posts: 631	You could use the one in there in reverse or you could buy Jaycar Electronics if you have a wall plate you can even get one with a fm bleed off. Altronics - Your One Stop Electronics Shop __________________ Business Web, Email, SQL hosting and Online Backup services available. http://www.2000cn.com.au Wii, Xbox, Xbox 360, PS2, PS3 mods and repairs http://www.ausmodchips.com or PM me for further details

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04-05-08, 08:53 PM	#3 (permalink)
soap Senior Member iTrader: (0) Join Date: Jan 2008 Posts: 108 Spent time on board: 0:14:35	yes FM is transmitted upon the same frequencies as TV stations, thus your antenna will pick them up. AM is left out in the cold and is only ever good through a car radio in my experience.

07-05-08, 08:58 PM	#6 (permalink)
ramrod Premium Member iTrader: (4) Join Date: Apr 2008 Posts: 92	Sorry mate I mean its normally a coax PAL male plug

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