[Antennas] Think I've got this figured out, Re: AM Broadcast RX Antenna?

Hue Miller kargo_cult at msn.com
Fri Nov 13 23:12:58 EST 2015


I am not going to dig out a car radio schematic right now, but I think if YOU do, you'll see that the car antenna goes right to into
a high impedance point of a tuned circuit - and its capacitance is effectively part of the tuned circuit. This is as good a 'match' as you need. 
Unless you're going to transmit on 660, and you need  to drive current into the antenna, resonating the antenna by itself is pointless.
-Hue 

-----Original Message----- 
From: KD7JYK DM09 
Sent: Friday, November 13, 2015 4:57 PM 
To: antennas at mailman.qth.net 
Subject: [Antennas] Think I've got this figured out,Re: AM Broadcast RX Antenna? 

I recall in my 1974 Antenna design book (will have to locate it) a design 
for a 160m shortened vertical antenna.

I can install my whip, measure the inductance, scrounge my formulas book and 
calculate how much more inductance and capacitance is needed to make the 
antenna resonant at 660 KHz!  One layout I found in a quick online search is 
the L network.

Kurt 



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