Wasn't the connector used with auto radios called a Motorola connector? The connector has a larger diameter and the center pin is longer than the RCA "phono" connector?
Mike N2MS
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On 09/07/2023 2:27 PM EDT DougVL < k8rftradio@... > wrote:
On Sat, Aug 26, 2023 at 01:32 PM, Ben Cranston wrote:
central pin ¡°is¡± the resonant element
Car radio antennas are a 'high impedance' design, and their co-ax cable is
also Hi-Z.
While 'any antenna' will radiate, some do it FAR better than others.
To more directly answer your original question, you would need a cable
with the proper connector to connect the antenna to the vna. Do you have
one? As I recall, older car radios use a connector like the old RCA phono
plug/jack system. A push-in coaxial plug to fit the car's jack. Get an
extra car antenna with cable from a junkyard, cut off the 'radio' end and
use the cable with the vna.
--
Doug, K8RFT
