Very High SWR for Short 800 Mhz. Rubber Ducky

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Jocko
Posts: 33
Joined: Sun Sep 09, 2001 4:00 pm

Very High SWR for Short 800 Mhz. Rubber Ducky

Post by Jocko »

I just hooked up my 3 inch Motorola 800 Mhz. shorty antennta to the network analizer and the SWR was around 4:1 does that sound right? It was terrible. The 1/4 wave 900 Mhz. antenna was great at 1.04:1 centered at 930.000 Mhz. Let me know what you guys think.

Jason
Will
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Joined: Tue Sep 04, 2001 4:00 pm

Post by Will »

These antennas fail prety easally, and it sounds like that one took a "walk".
RadioSouth
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Joined: Mon Sep 03, 2001 4:00 pm

Post by RadioSouth »

Could the readings be due to lack of a ground plane ? The 3" antenna
is the 1/4 wave and requires a ground plane to show a decent SWR (antenna hooked up to the radio provides somewhat of a ground plane).
Does the network analyzer provide any ground plane ? The larger antenna- possibly an elevated wave 1/4 wave dipole wouldn't be much affected without a ground plane.
kyledooley
Posts: 177
Joined: Thu Feb 28, 2002 4:00 pm
What radios do you own?: XTSs

Post by kyledooley »

I would say the antenna wire got cracked off inside.

K.
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Code3Response
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Joined: Mon Sep 03, 2001 4:00 pm

Jocko:

Post by Code3Response »

Jason.... email me.
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