|Subject:||Re: [Discuss-gnuradio] What impedance are the wires and antenna?|
|Date:||Tue, 28 Jul 2009 15:55:26 -0400|
Thanks Eric!2009/7/28 Eric Blossom <address@hidden>Antenna:On Tue, Jul 28, 2009 at 03:37:02PM -0400, Jonathan Coveney wrote:
> Well, maybe that's the wrong way to phrase it. I need to make or buy an FM
> antenna (I realized I accidentally grabbed the VERT900 from my lab, and they
> don't have an FM antenna).
> Some sites seem to imply that coax is usually 70 ohm, but it looks like here
> That the Thermax RGS-316 may be 50 ohm? I just need to know so I don't ruin
> I checked ettus labs and couldn't see an answer.
75 ohm Matching transformer (close enough):
Then you need an F-to-BNC and BNC-to-SMA or something similar, unless
you're plugging it into a TVRX (which has an F-connector).
Coax is commonly either 50 ohm or 75 ohm. Cable TV uses 75 ohm.
For this application, either will work fine.
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