Stupid Tuner Question

Systems
Systems Posts: 14,873
edited February 2008 in Electronics
I have an old Dynaco FM5 tuner I want to start using. There is no built-in antenna on this unit. I can't remember how to hook up the antenna. I have several loop antennas and one dipole antenna. How do you use these with having a 300ohm and a 75ohm selection on the rear of the tuner? I am also toying with the idea of a indoor/powered antenna. How do I hook this up?

Sorry to sound so stupid, but its easy for me to do.

Chuck
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Comments

  • billbillw
    billbillw Posts: 7,478
    edited February 2008
    75ohm is usually for a coax connection. Twin-lead is 300 ohm.

    Usually dipoles work best for FM. Just have the leads/ears fully outstretched and perpendicular to the towers you want to pickup.
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  • bikezappa
    bikezappa Posts: 2,463
    edited February 2008
    You could also try the $10 rabbit ears from Radio shack. The rabbit ears are probably coax so you will need a converter to go from coax to twin lead to the connection to the Dynaco. If you can find twin lead rabbits that is the best.

    I have found the rabbit ears are better to tune/rotate to get better signal strength from different stations in different locations.

    Have a blast.
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  • mhardy6647
    mhardy6647 Posts: 34,931
    edited February 2008
    Dipole isn't a bad antenna at all. Just remember the signal pickup is in a 'figure 8' pattern.
    Twinlead dipole connects to your 300 ohm antenna inputs. If you want to hook it to 75 ohm, unbalanced input, you'll need a 300 to 75 ohm 'balun' (BALanced o UNbalanced matching transformer). This is probably one of the few useful things you might still find at Radio Shack.

    Here's a DIY FM dipole. You can custom tune, e.g., if you only listen to college and nonprofit stations below 92 MHz.

    http://www.northcountryradio.com/Articles/fmdip.htm
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  • Systems
    Systems Posts: 14,873
    edited February 2008
    THANKS GUYS...sorry caps lock...I am using the loop from one of my HT receivers right now and will be looking for something different tomorrow. I'm thinking that since this is such an old tuner (some of my Dad's stuff) I may be taking it in for an aliagnment next week. I want this thing to operate as good as if it was new. And so far...this thing is pretty damn good. Beats out the NAD 4020 I was using. George Grand said it best when he raved on how this was a neat little tuner/ pre with the inputs and the way you can suppliment the pre stage for your needs. I really like the vintage stuff I found that my dad gave me.


    Chuck
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